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[glibc/zack/no-nested-includes] Move most headers installed by top-level Makefile to misc/.
- From: Zack Weinberg <zack at sourceware dot org>
- To: glibc-cvs at sourceware dot org
- Date: 26 May 2019 16:35:36 -0000
- Subject: [glibc/zack/no-nested-includes] Move most headers installed by top-level Makefile to misc/.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=11945dbb61c386b1670d38c86d7e3a6da9d2fa11
commit 11945dbb61c386b1670d38c86d7e3a6da9d2fa11
Author: Zack Weinberg <zackw@panix.com>
Date: Sat Feb 23 19:08:54 2019 -0500
Move most headers installed by top-level Makefile to misc/.
The Makefile glue to run tests on installed headers is currently
duplicated between the top-level Makefile and Rules, because the
top-level Makefile doesn't read Rules but does install some headers.
This patch moves most of the headers installed by the top-level Makefile
to misc/ (chosen arbitrarily; I'm open to putting them somewhere else
if reviewers feel it would be better) and removes the duplicated logic
from the top-level Makefile. I believe this also means that none of
the headers in include/ are installed headers anymore.
gnu/lib-names*.h are still generated by code in Makerules and installed
by the top-level Makefile. I tried to move them to misc/ as well, but
that broke the generation process in a manner that didn't make any sense
so I gave up. The tests performed on installed headers are not
especially useful for gnu/lib-names*.h so I think we can live with this
for now.
* include/bits/xopen_lim.h
* include/features.h
* include/gnu-versions.h
* include/gnu/libc-version.h
* include/limits.h
* include/stdc-predef.h
* include/values.h:
Move to misc/ and replace with a trivial wrapper.
* Makefile (headers): Remove all headers moved to misc/.
Don't set a vpath for %.h.
(check-installed-headers-c.out, check-installed-headers-cxx.out)
(check-wrapper-headers.out): Remove rules.
* misc/Makefile (headers): Add all of the above headers and
sort the list.
* sysdeps/mach/hurd/bits/errno.h: Regenerate.
Diff:
---
Makefile | 38 +---
include/bits/xopen_lim.h | 149 +------------
include/features.h | 478 +----------------------------------------
include/gnu-versions.h | 53 +----
include/gnu/libc-version.h | 35 +--
include/limits.h | 193 +----------------
include/stdc-predef.h | 61 +-----
include/values.h | 69 +-----
misc/Makefile | 31 +--
misc/bits/xopen_lim.h | 148 +++++++++++++
misc/features.h | 477 ++++++++++++++++++++++++++++++++++++++++
misc/gnu-versions.h | 52 +++++
misc/gnu/libc-version.h | 34 +++
misc/limits.h | 192 +++++++++++++++++
misc/stdc-predef.h | 60 ++++++
misc/values.h | 68 ++++++
sysdeps/mach/hurd/bits/errno.h | 1 +
17 files changed, 1057 insertions(+), 1082 deletions(-)
diff --git a/Makefile b/Makefile
index dc5de7a..d34aa8b 100644
--- a/Makefile
+++ b/Makefile
@@ -59,17 +59,11 @@ endif # $(AUTOCONF) = no
subdir_objs subdir_stubs subdir_testclean \
$(addprefix install-, no-libc.a bin lib data headers others)
-headers := limits.h values.h features.h gnu-versions.h \
- bits/xopen_lim.h gnu/libc-version.h stdc-predef.h \
- bits/libc-header-start.h
+headers :=
echo-headers: subdir_echo-headers
-# The headers are in the include directory.
-subdir-dirs = include
-vpath %.h $(subdir-dirs)
-
-# What to install.
+# This header is created during the install process. See below.
install-others = $(inst_includedir)/gnu/stubs.h
install-bin-script =
@@ -311,34 +305,6 @@ $(objpfx)check-local-headers.out: scripts/check-local-headers.sh
"$(includedir)" "$(objpfx)" < /dev/null > $@; \
$(evaluate-test)
-ifneq "$(headers)" ""
-# Special test of all the installed headers in this directory.
-tests-special += $(objpfx)check-installed-headers-c.out
-libof-check-installed-headers-c := testsuite
-$(objpfx)check-installed-headers-c.out: \
- scripts/check-installed-headers.sh $(headers)
- $(SHELL) $(..)scripts/check-installed-headers.sh c \
- "$(CC) $(filter-out -std=%,$(CFLAGS)) -D_ISOMAC $(+includes)" \
- $(headers) > $@; \
- $(evaluate-test)
-
-ifneq "$(CXX)" ""
-tests-special += $(objpfx)check-installed-headers-cxx.out
-libof-check-installed-headers-cxx := testsuite
-$(objpfx)check-installed-headers-cxx.out: \
- scripts/check-installed-headers.sh $(headers)
- $(SHELL) $(..)scripts/check-installed-headers.sh c++ \
- "$(CXX) $(filter-out -std=%,$(CXXFLAGS)) -D_ISOMAC $(+includes)" \
- $(headers) > $@; \
- $(evaluate-test)
-endif # $(CXX)
-
-tests-special += $(objpfx)check-wrapper-headers.out
-$(objpfx)check-wrapper-headers.out: scripts/check-wrapper-headers.py $(headers)
- $(PYTHON) $< --root=. --subdir=. $(headers) \
- --generated $(common-generated) > $@; $(evaluate-test)
-endif # $(headers)
-
define summarize-tests
@egrep -v '^(PASS|XFAIL):' $(objpfx)$1 || true
@echo "Summary of test results$2:"
diff --git a/include/bits/xopen_lim.h b/include/bits/xopen_lim.h
index b76a94b..9c2c1ec 100644
--- a/include/bits/xopen_lim.h
+++ b/include/bits/xopen_lim.h
@@ -1,148 +1 @@
-/* Copyright (C) 1996-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-/*
- * Never include this file directly; use <limits.h> instead.
- */
-
-/* Additional definitions from X/Open Portability Guide, Issue 4, Version 2
- System Interfaces and Headers, 4.16 <limits.h>
-
- Please note only the values which are not greater than the minimum
- stated in the standard document are listed. The `sysconf' functions
- should be used to obtain the actual value. */
-
-#ifndef _XOPEN_LIM_H
-#define _XOPEN_LIM_H 1
-
-/* We do not provide fixed values for
-
- ARG_MAX Maximum length of argument to the `exec' function
- including environment data.
-
- ATEXIT_MAX Maximum number of functions that may be registered
- with `atexit'.
-
- CHILD_MAX Maximum number of simultaneous processes per real
- user ID.
-
- OPEN_MAX Maximum number of files that one process can have open
- at anyone time.
-
- PAGESIZE
- PAGE_SIZE Size of bytes of a page.
-
- PASS_MAX Maximum number of significant bytes in a password.
-
- We only provide a fixed limit for
-
- IOV_MAX Maximum number of `iovec' structures that one process has
- available for use with `readv' or writev'.
-
- if this is indeed fixed by the underlying system.
-*/
-
-
-/* Maximum number of `iovec' structures that may be used in a single call
- to `readv', `writev', etc. */
-#define _XOPEN_IOV_MAX _POSIX_UIO_MAXIOV
-
-#include <bits/uio_lim.h>
-#ifdef __IOV_MAX
-# define IOV_MAX __IOV_MAX
-#else
-# undef IOV_MAX
-#endif
-
-/* Maximum value of `digit' in calls to the `printf' and `scanf'
- functions. We have no limit, so return a reasonable value. */
-#define NL_ARGMAX _POSIX_ARG_MAX
-
-/* Maximum number of bytes in a `LANG' name. We have no limit. */
-#define NL_LANGMAX _POSIX2_LINE_MAX
-
-/* Maximum message number. We have no limit. */
-#define NL_MSGMAX INT_MAX
-
-/* Maximum number of bytes in N-to-1 collation mapping. We have no
- limit. */
-#if defined __USE_GNU || !defined __USE_XOPEN2K8
-# define NL_NMAX INT_MAX
-#endif
-
-/* Maximum set number. We have no limit. */
-#define NL_SETMAX INT_MAX
-
-/* Maximum number of bytes in a message. We have no limit. */
-#define NL_TEXTMAX INT_MAX
-
-/* Default process priority. */
-#define NZERO 20
-
-
-/* Number of bits in a word of type `int'. */
-#ifdef INT_MAX
-# if INT_MAX == 32767
-# define WORD_BIT 16
-# else
-# if INT_MAX == 2147483647
-# define WORD_BIT 32
-# else
-/* Safe assumption. */
-# define WORD_BIT 64
-# endif
-# endif
-#elif defined __INT_MAX__
-# if __INT_MAX__ == 32767
-# define WORD_BIT 16
-# else
-# if __INT_MAX__ == 2147483647
-# define WORD_BIT 32
-# else
-/* Safe assumption. */
-# define WORD_BIT 64
-# endif
-# endif
-#else
-# define WORD_BIT 32
-#endif
-
-/* Number of bits in a word of type `long int'. */
-#ifdef LONG_MAX
-# if LONG_MAX == 2147483647
-# define LONG_BIT 32
-# else
-/* Safe assumption. */
-# define LONG_BIT 64
-# endif
-#elif defined __LONG_MAX__
-# if __LONG_MAX__ == 2147483647
-# define LONG_BIT 32
-# else
-/* Safe assumption. */
-# define LONG_BIT 64
-# endif
-#else
-# include <bits/wordsize.h>
-# if __WORDSIZE == 64
-# define LONG_BIT 64
-# else
-# define LONG_BIT 32
-# endif
-#endif
-
-#endif /* bits/xopen_lim.h */
+#include <misc/bits/xopen_lim.h>
diff --git a/include/features.h b/include/features.h
index e016b3e..504a684 100644
--- a/include/features.h
+++ b/include/features.h
@@ -1,477 +1 @@
-/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#ifndef _FEATURES_H
-#define _FEATURES_H 1
-
-/* These are defined by the user (or the compiler)
- to specify the desired environment:
-
- __STRICT_ANSI__ ISO Standard C.
- _ISOC99_SOURCE Extensions to ISO C89 from ISO C99.
- _ISOC11_SOURCE Extensions to ISO C99 from ISO C11.
- __STDC_WANT_LIB_EXT2__
- Extensions to ISO C99 from TR 27431-2:2010.
- __STDC_WANT_IEC_60559_BFP_EXT__
- Extensions to ISO C11 from TS 18661-1:2014.
- __STDC_WANT_IEC_60559_FUNCS_EXT__
- Extensions to ISO C11 from TS 18661-4:2015.
- __STDC_WANT_IEC_60559_TYPES_EXT__
- Extensions to ISO C11 from TS 18661-3:2015.
-
- _POSIX_SOURCE IEEE Std 1003.1.
- _POSIX_C_SOURCE If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
- if >=199309L, add IEEE Std 1003.1b-1993;
- if >=199506L, add IEEE Std 1003.1c-1995;
- if >=200112L, all of IEEE 1003.1-2004
- if >=200809L, all of IEEE 1003.1-2008
- _XOPEN_SOURCE Includes POSIX and XPG things. Set to 500 if
- Single Unix conformance is wanted, to 600 for the
- sixth revision, to 700 for the seventh revision.
- _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
- _LARGEFILE_SOURCE Some more functions for correct standard I/O.
- _LARGEFILE64_SOURCE Additional functionality from LFS for large files.
- _FILE_OFFSET_BITS=N Select default filesystem interface.
- _ATFILE_SOURCE Additional *at interfaces.
- _GNU_SOURCE All of the above, plus GNU extensions.
- _DEFAULT_SOURCE The default set of features (taking precedence over
- __STRICT_ANSI__).
-
- _FORTIFY_SOURCE Add security hardening to many library functions.
- Set to 1 or 2; 2 performs stricter checks than 1.
-
- _REENTRANT, _THREAD_SAFE
- Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
-
- The `-ansi' switch to the GNU C compiler, and standards conformance
- options such as `-std=c99', define __STRICT_ANSI__. If none of
- these are defined, or if _DEFAULT_SOURCE is defined, the default is
- to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
- 200809L, as well as enabling miscellaneous functions from BSD and
- SVID. If more than one of these are defined, they accumulate. For
- example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
- give you ISO C, 1003.1, and 1003.2, but nothing else.
-
- These are defined by this file and are used by the
- header files to decide what to declare or define:
-
- __GLIBC_USE (F) Define things from feature set F. This is defined
- to 1 or 0; the subsequent macros are either defined
- or undefined, and those tests should be moved to
- __GLIBC_USE.
- __USE_ISOC11 Define ISO C11 things.
- __USE_ISOC99 Define ISO C99 things.
- __USE_ISOC95 Define ISO C90 AMD1 (C95) things.
- __USE_ISOCXX11 Define ISO C++11 things.
- __USE_POSIX Define IEEE Std 1003.1 things.
- __USE_POSIX2 Define IEEE Std 1003.2 things.
- __USE_POSIX199309 Define IEEE Std 1003.1, and .1b things.
- __USE_POSIX199506 Define IEEE Std 1003.1, .1b, .1c and .1i things.
- __USE_XOPEN Define XPG things.
- __USE_XOPEN_EXTENDED Define X/Open Unix things.
- __USE_UNIX98 Define Single Unix V2 things.
- __USE_XOPEN2K Define XPG6 things.
- __USE_XOPEN2KXSI Define XPG6 XSI things.
- __USE_XOPEN2K8 Define XPG7 things.
- __USE_XOPEN2K8XSI Define XPG7 XSI things.
- __USE_LARGEFILE Define correct standard I/O things.
- __USE_LARGEFILE64 Define LFS things with separate names.
- __USE_FILE_OFFSET64 Define 64bit interface as default.
- __USE_MISC Define things from 4.3BSD or System V Unix.
- __USE_ATFILE Define *at interfaces and AT_* constants for them.
- __USE_GNU Define GNU extensions.
- __USE_FORTIFY_LEVEL Additional security measures used, according to level.
-
- The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
- defined by this file unconditionally. `__GNU_LIBRARY__' is provided
- only for compatibility. All new code should use the other symbols
- to test for features.
-
- All macros listed above as possibly being defined by this file are
- explicitly undefined if they are not explicitly defined.
- Feature-test macros that are not defined by the user or compiler
- but are implied by the other feature-test macros defined (or by the
- lack of any definitions) are defined by the file.
-
- ISO C feature test macros depend on the definition of the macro
- when an affected header is included, not when the first system
- header is included, and so they are handled in
- <bits/libc-header-start.h>, which does not have a multiple include
- guard. Feature test macros that can be handled from the first
- system header included are handled here. */
-
-
-/* Undefine everything, so we get a clean slate. */
-#undef __USE_ISOC11
-#undef __USE_ISOC99
-#undef __USE_ISOC95
-#undef __USE_ISOCXX11
-#undef __USE_POSIX
-#undef __USE_POSIX2
-#undef __USE_POSIX199309
-#undef __USE_POSIX199506
-#undef __USE_XOPEN
-#undef __USE_XOPEN_EXTENDED
-#undef __USE_UNIX98
-#undef __USE_XOPEN2K
-#undef __USE_XOPEN2KXSI
-#undef __USE_XOPEN2K8
-#undef __USE_XOPEN2K8XSI
-#undef __USE_LARGEFILE
-#undef __USE_LARGEFILE64
-#undef __USE_FILE_OFFSET64
-#undef __USE_MISC
-#undef __USE_ATFILE
-#undef __USE_GNU
-#undef __USE_FORTIFY_LEVEL
-#undef __KERNEL_STRICT_NAMES
-#undef __GLIBC_USE_DEPRECATED_GETS
-#undef __GLIBC_USE_DEPRECATED_SCANF
-
-/* Suppress kernel-name space pollution unless user expressedly asks
- for it. */
-#ifndef _LOOSE_KERNEL_NAMES
-# define __KERNEL_STRICT_NAMES
-#endif
-
-/* Convenience macro to test the version of gcc.
- Use like this:
- #if __GNUC_PREREQ (2,8)
- ... code requiring gcc 2.8 or later ...
- #endif
- Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
- added in 2.0. */
-#if defined __GNUC__ && defined __GNUC_MINOR__
-# define __GNUC_PREREQ(maj, min) \
- ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
-#else
-# define __GNUC_PREREQ(maj, min) 0
-#endif
-
-/* Similarly for clang. Features added to GCC after version 4.2 may
- or may not also be available in clang, and clang's definitions of
- __GNUC(_MINOR)__ are fixed at 4 and 2 respectively. Not all such
- features can be queried via __has_extension/__has_feature. */
-#if defined __clang_major__ && defined __clang_minor__
-# define __glibc_clang_prereq(maj, min) \
- ((__clang_major__ << 16) + __clang_minor__ >= ((maj) << 16) + (min))
-#else
-# define __glibc_clang_prereq(maj, min) 0
-#endif
-
-/* Whether to use feature set F. */
-#define __GLIBC_USE(F) __GLIBC_USE_ ## F
-
-/* _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
- _DEFAULT_SOURCE. If _DEFAULT_SOURCE is present we do not
- issue a warning; the expectation is that the source is being
- transitioned to use the new macro. */
-#if (defined _BSD_SOURCE || defined _SVID_SOURCE) \
- && !defined _DEFAULT_SOURCE
-# warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"
-# undef _DEFAULT_SOURCE
-# define _DEFAULT_SOURCE 1
-#endif
-
-/* If _GNU_SOURCE was defined by the user, turn on all the other features. */
-#ifdef _GNU_SOURCE
-# undef _ISOC95_SOURCE
-# define _ISOC95_SOURCE 1
-# undef _ISOC99_SOURCE
-# define _ISOC99_SOURCE 1
-# undef _ISOC11_SOURCE
-# define _ISOC11_SOURCE 1
-# undef _POSIX_SOURCE
-# define _POSIX_SOURCE 1
-# undef _POSIX_C_SOURCE
-# define _POSIX_C_SOURCE 200809L
-# undef _XOPEN_SOURCE
-# define _XOPEN_SOURCE 700
-# undef _XOPEN_SOURCE_EXTENDED
-# define _XOPEN_SOURCE_EXTENDED 1
-# undef _LARGEFILE64_SOURCE
-# define _LARGEFILE64_SOURCE 1
-# undef _DEFAULT_SOURCE
-# define _DEFAULT_SOURCE 1
-# undef _ATFILE_SOURCE
-# define _ATFILE_SOURCE 1
-#endif
-
-/* If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
- define _DEFAULT_SOURCE. */
-#if (defined _DEFAULT_SOURCE \
- || (!defined __STRICT_ANSI__ \
- && !defined _ISOC99_SOURCE && !defined _ISOC11_SOURCE \
- && !defined _POSIX_SOURCE && !defined _POSIX_C_SOURCE \
- && !defined _XOPEN_SOURCE))
-# undef _DEFAULT_SOURCE
-# define _DEFAULT_SOURCE 1
-#endif
-
-/* This is to enable the ISO C11 extension. */
-#if (defined _ISOC11_SOURCE \
- || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 201112L))
-# define __USE_ISOC11 1
-#endif
-
-/* This is to enable the ISO C99 extension. */
-#if (defined _ISOC99_SOURCE || defined _ISOC11_SOURCE \
- || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
-# define __USE_ISOC99 1
-#endif
-
-/* This is to enable the ISO C90 Amendment 1:1995 extension. */
-#if (defined _ISOC99_SOURCE || defined _ISOC11_SOURCE \
- || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199409L))
-# define __USE_ISOC95 1
-#endif
-
-#ifdef __cplusplus
-/* This is to enable compatibility for ISO C++17. */
-# if __cplusplus >= 201703L
-# define __USE_ISOC11 1
-# endif
-/* This is to enable compatibility for ISO C++11.
- Check the temporary macro for now, too. */
-# if __cplusplus >= 201103L || defined __GXX_EXPERIMENTAL_CXX0X__
-# define __USE_ISOCXX11 1
-# define __USE_ISOC99 1
-# endif
-#endif
-
-/* If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
- is defined, use POSIX.1-2008 (or another version depending on
- _XOPEN_SOURCE). */
-#ifdef _DEFAULT_SOURCE
-# if !defined _POSIX_SOURCE && !defined _POSIX_C_SOURCE
-# define __USE_POSIX_IMPLICITLY 1
-# endif
-# undef _POSIX_SOURCE
-# define _POSIX_SOURCE 1
-# undef _POSIX_C_SOURCE
-# define _POSIX_C_SOURCE 200809L
-#endif
-
-#if ((!defined __STRICT_ANSI__ \
- || (defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) >= 500)) \
- && !defined _POSIX_SOURCE && !defined _POSIX_C_SOURCE)
-# define _POSIX_SOURCE 1
-# if defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) < 500
-# define _POSIX_C_SOURCE 2
-# elif defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) < 600
-# define _POSIX_C_SOURCE 199506L
-# elif defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) < 700
-# define _POSIX_C_SOURCE 200112L
-# else
-# define _POSIX_C_SOURCE 200809L
-# endif
-# define __USE_POSIX_IMPLICITLY 1
-#endif
-
-/* Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
- defined in all multithreaded code. GNU libc has not required this
- for many years. We now treat them as compatibility synonyms for
- _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
- comprehensive support for multithreaded code. Using them never
- lowers the selected level of POSIX conformance, only raises it. */
-#if ((!defined _POSIX_C_SOURCE || (_POSIX_C_SOURCE - 0) < 199506L) \
- && (defined _REENTRANT || defined _THREAD_SAFE))
-# define _POSIX_SOURCE 1
-# undef _POSIX_C_SOURCE
-# define _POSIX_C_SOURCE 199506L
-#endif
-
-#if (defined _POSIX_SOURCE \
- || (defined _POSIX_C_SOURCE && _POSIX_C_SOURCE >= 1) \
- || defined _XOPEN_SOURCE)
-# define __USE_POSIX 1
-#endif
-
-#if defined _POSIX_C_SOURCE && _POSIX_C_SOURCE >= 2 || defined _XOPEN_SOURCE
-# define __USE_POSIX2 1
-#endif
-
-#if defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199309L
-# define __USE_POSIX199309 1
-#endif
-
-#if defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199506L
-# define __USE_POSIX199506 1
-#endif
-
-#if defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200112L
-# define __USE_XOPEN2K 1
-# undef __USE_ISOC95
-# define __USE_ISOC95 1
-# undef __USE_ISOC99
-# define __USE_ISOC99 1
-#endif
-
-#if defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200809L
-# define __USE_XOPEN2K8 1
-# undef _ATFILE_SOURCE
-# define _ATFILE_SOURCE 1
-#endif
-
-#ifdef _XOPEN_SOURCE
-# define __USE_XOPEN 1
-# if (_XOPEN_SOURCE - 0) >= 500
-# define __USE_XOPEN_EXTENDED 1
-# define __USE_UNIX98 1
-# undef _LARGEFILE_SOURCE
-# define _LARGEFILE_SOURCE 1
-# if (_XOPEN_SOURCE - 0) >= 600
-# if (_XOPEN_SOURCE - 0) >= 700
-# define __USE_XOPEN2K8 1
-# define __USE_XOPEN2K8XSI 1
-# endif
-# define __USE_XOPEN2K 1
-# define __USE_XOPEN2KXSI 1
-# undef __USE_ISOC95
-# define __USE_ISOC95 1
-# undef __USE_ISOC99
-# define __USE_ISOC99 1
-# endif
-# else
-# ifdef _XOPEN_SOURCE_EXTENDED
-# define __USE_XOPEN_EXTENDED 1
-# endif
-# endif
-#endif
-
-#ifdef _LARGEFILE_SOURCE
-# define __USE_LARGEFILE 1
-#endif
-
-#ifdef _LARGEFILE64_SOURCE
-# define __USE_LARGEFILE64 1
-#endif
-
-#if defined _FILE_OFFSET_BITS && _FILE_OFFSET_BITS == 64
-# define __USE_FILE_OFFSET64 1
-#endif
-
-#if defined _DEFAULT_SOURCE
-# define __USE_MISC 1
-#endif
-
-#ifdef _ATFILE_SOURCE
-# define __USE_ATFILE 1
-#endif
-
-#ifdef _GNU_SOURCE
-# define __USE_GNU 1
-#endif
-
-#if defined _FORTIFY_SOURCE && _FORTIFY_SOURCE > 0
-# if !defined __OPTIMIZE__ || __OPTIMIZE__ <= 0
-# warning _FORTIFY_SOURCE requires compiling with optimization (-O)
-# elif !__GNUC_PREREQ (4, 1)
-# warning _FORTIFY_SOURCE requires GCC 4.1 or later
-# elif _FORTIFY_SOURCE > 1
-# define __USE_FORTIFY_LEVEL 2
-# else
-# define __USE_FORTIFY_LEVEL 1
-# endif
-#endif
-#ifndef __USE_FORTIFY_LEVEL
-# define __USE_FORTIFY_LEVEL 0
-#endif
-
-/* The function 'gets' existed in C89, but is impossible to use
- safely. It has been removed from ISO C11 and ISO C++14. Note: for
- compatibility with various implementations of <cstdio>, this test
- must consider only the value of __cplusplus when compiling C++. */
-#if defined __cplusplus ? __cplusplus >= 201402L : defined __USE_ISOC11
-# define __GLIBC_USE_DEPRECATED_GETS 0
-#else
-# define __GLIBC_USE_DEPRECATED_GETS 1
-#endif
-
-/* GNU formerly extended the scanf functions with modified format
- specifiers %as, %aS, and %a[...] that allocate a buffer for the
- input using malloc. This extension conflicts with ISO C99, which
- defines %a as a standalone format specifier that reads a floating-
- point number; moreover, POSIX.1-2008 provides the same feature
- using the modifier letter 'm' instead (%ms, %mS, %m[...]).
-
- We now follow C99 unless GNU extensions are active and the compiler
- is specifically in C89 or C++98 mode (strict or not). For
- instance, with GCC, -std=gnu11 will have C99-compliant scanf with
- or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
- old extension. */
-#if (defined __USE_GNU \
- && (defined __cplusplus \
- ? (__cplusplus < 201103L && !defined __GXX_EXPERIMENTAL_CXX0X__) \
- : (!defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L)))
-# define __GLIBC_USE_DEPRECATED_SCANF 1
-#else
-# define __GLIBC_USE_DEPRECATED_SCANF 0
-#endif
-
-/* Get definitions of __STDC_* predefined macros, if the compiler has
- not preincluded this header automatically. */
-#include <stdc-predef.h>
-
-/* This macro indicates that the installed library is the GNU C Library.
- For historic reasons the value now is 6 and this will stay from now
- on. The use of this variable is deprecated. Use __GLIBC__ and
- __GLIBC_MINOR__ now (see below) when you want to test for a specific
- GNU C library version and use the values in <gnu/lib-names.h> to get
- the sonames of the shared libraries. */
-#undef __GNU_LIBRARY__
-#define __GNU_LIBRARY__ 6
-
-/* Major and minor version number of the GNU C library package. Use
- these macros to test for features in specific releases. */
-#define __GLIBC__ 2
-#define __GLIBC_MINOR__ 29
-
-#define __GLIBC_PREREQ(maj, min) \
- ((__GLIBC__ << 16) + __GLIBC_MINOR__ >= ((maj) << 16) + (min))
-
-/* This is here only because every header file already includes this one. */
-#ifndef __ASSEMBLER__
-# ifndef _SYS_CDEFS_H
-# include <sys/cdefs.h>
-# endif
-
-/* If we don't have __REDIRECT, prototypes will be missing if
- __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64]. */
-# if defined __USE_FILE_OFFSET64 && !defined __REDIRECT
-# define __USE_LARGEFILE 1
-# define __USE_LARGEFILE64 1
-# endif
-
-#endif /* !ASSEMBLER */
-
-/* Decide whether we can define 'extern inline' functions in headers. */
-#if __GNUC_PREREQ (2, 7) && defined __OPTIMIZE__ \
- && !defined __OPTIMIZE_SIZE__ && !defined __NO_INLINE__ \
- && defined __extern_inline
-# define __USE_EXTERN_INLINES 1
-#endif
-
-
-/* This is here only because every header file already includes this one.
- Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
- <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
- that will always return failure (and set errno to ENOSYS). */
-#include <gnu/stubs.h>
-
-
-#endif /* features.h */
+#include <misc/features.h>
diff --git a/include/gnu-versions.h b/include/gnu-versions.h
index 6db552a..eafc8c8 100644
--- a/include/gnu-versions.h
+++ b/include/gnu-versions.h
@@ -1,52 +1 @@
-/* Header with interface version macros for library pieces copied elsewhere.
- Copyright (C) 1995-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#ifndef _GNU_VERSIONS_H
-#define _GNU_VERSIONS_H 1
-
-/* This file exists to define these few macros. Each specifies a version
- number associated with the library interface of a piece of the C library
- which is also distributed with other GNU packages. These pieces are
- both part of the GNU C library and also distributed with other GNU
- packages so those packages may use their facilities on systems lacking
- the GNU C library. The source files for each piece surround all their
- code with `#ifndef ELIDE_CODE' after defining it with this:
-
- #define OBSTACK_INTERFACE_VERSION 1
- #if !defined (_LIBC) && defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1
- #include <gnu-versions.h>
- #if _GNU_OBSTACK_INTERFACE_VERSION == OBSTACK_INTERFACE_VERSION
- #define ELIDE_CODE
- #endif
- #endif
-
- This allows those one to avoid compiling those files when part of a GNU
- package not libc, on a system using a GNU C library that supports the
- same interface.
-
- Please preserve the format of the comments after each macro. And
- remember, if any of these versions change, the libc.so major version
- number must change too (so avoid it)! */
-
-#define _GNU_OBSTACK_INTERFACE_VERSION 1 /* vs malloc/obstack.c */
-#define _GNU_REGEX_INTERFACE_VERSION 1 /* vs posix/regex.c */
-#define _GNU_GLOB_INTERFACE_VERSION 2 /* vs posix/glob.c */
-#define _GNU_GETOPT_INTERFACE_VERSION 2 /* vs posix/getopt.c and
- posix/getopt1.c */
-
-#endif /* gnu-versions.h */
+#include <misc/gnu-versions.h>
diff --git a/include/gnu/libc-version.h b/include/gnu/libc-version.h
index 0e2e91b..745fb5b 100644
--- a/include/gnu/libc-version.h
+++ b/include/gnu/libc-version.h
@@ -1,34 +1 @@
-/* Interface to GNU libc specific functions for version information.
- Copyright (C) 1998-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#ifndef _GNU_LIBC_VERSION_H
-#define _GNU_LIBC_VERSION_H 1
-
-#include <features.h>
-
-__BEGIN_DECLS
-
-/* Return string describing release status of currently running GNU libc. */
-extern const char *gnu_get_libc_release (void) __THROW;
-
-/* Return string describing version of currently running GNU libc. */
-extern const char *gnu_get_libc_version (void) __THROW;
-
-__END_DECLS
-
-#endif /* gnu/libc-version.h */
+#include <misc/gnu/libc-version.h>
diff --git a/include/limits.h b/include/limits.h
index 08bb524..9eb278c 100644
--- a/include/limits.h
+++ b/include/limits.h
@@ -1,192 +1 @@
-/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-/*
- * ISO C99 Standard: 7.10/5.2.4.2.1 Sizes of integer types <limits.h>
- */
-
-#ifndef _LIBC_LIMITS_H_
-#define _LIBC_LIMITS_H_ 1
-
-#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
-#include <bits/libc-header-start.h>
-
-
-/* Maximum length of any multibyte character in any locale.
- We define this value here since the gcc header does not define
- the correct value. */
-#define MB_LEN_MAX 16
-
-
-/* If we are not using GNU CC we have to define all the symbols ourself.
- Otherwise use gcc's definitions (see below). */
-#if !defined __GNUC__ || __GNUC__ < 2
-
-/* We only protect from multiple inclusion here, because all the other
- #include's protect themselves, and in GCC 2 we may #include_next through
- multiple copies of this file before we get to GCC's. */
-# ifndef _LIMITS_H
-# define _LIMITS_H 1
-
-#include <bits/wordsize.h>
-
-/* We don't have #include_next.
- Define ANSI <limits.h> for standard 32-bit words. */
-
-/* These assume 8-bit `char's, 16-bit `short int's,
- and 32-bit `int's and `long int's. */
-
-/* Number of bits in a `char'. */
-# define CHAR_BIT 8
-
-/* Minimum and maximum values a `signed char' can hold. */
-# define SCHAR_MIN (-128)
-# define SCHAR_MAX 127
-
-/* Maximum value an `unsigned char' can hold. (Minimum is 0.) */
-# define UCHAR_MAX 255
-
-/* Minimum and maximum values a `char' can hold. */
-# ifdef __CHAR_UNSIGNED__
-# define CHAR_MIN 0
-# define CHAR_MAX UCHAR_MAX
-# else
-# define CHAR_MIN SCHAR_MIN
-# define CHAR_MAX SCHAR_MAX
-# endif
-
-/* Minimum and maximum values a `signed short int' can hold. */
-# define SHRT_MIN (-32768)
-# define SHRT_MAX 32767
-
-/* Maximum value an `unsigned short int' can hold. (Minimum is 0.) */
-# define USHRT_MAX 65535
-
-/* Minimum and maximum values a `signed int' can hold. */
-# define INT_MIN (-INT_MAX - 1)
-# define INT_MAX 2147483647
-
-/* Maximum value an `unsigned int' can hold. (Minimum is 0.) */
-# define UINT_MAX 4294967295U
-
-/* Minimum and maximum values a `signed long int' can hold. */
-# if __WORDSIZE == 64
-# define LONG_MAX 9223372036854775807L
-# else
-# define LONG_MAX 2147483647L
-# endif
-# define LONG_MIN (-LONG_MAX - 1L)
-
-/* Maximum value an `unsigned long int' can hold. (Minimum is 0.) */
-# if __WORDSIZE == 64
-# define ULONG_MAX 18446744073709551615UL
-# else
-# define ULONG_MAX 4294967295UL
-# endif
-
-# ifdef __USE_ISOC99
-
-/* Minimum and maximum values a `signed long long int' can hold. */
-# define LLONG_MAX 9223372036854775807LL
-# define LLONG_MIN (-LLONG_MAX - 1LL)
-
-/* Maximum value an `unsigned long long int' can hold. (Minimum is 0.) */
-# define ULLONG_MAX 18446744073709551615ULL
-
-# endif /* ISO C99 */
-
-# endif /* limits.h */
-#endif /* GCC 2. */
-
-#endif /* !_LIBC_LIMITS_H_ */
-
- /* Get the compiler's limits.h, which defines almost all the ISO constants.
-
- We put this #include_next outside the double inclusion check because
- it should be possible to include this file more than once and still get
- the definitions from gcc's header. */
-#if defined __GNUC__ && !defined _GCC_LIMITS_H_
-/* `_GCC_LIMITS_H_' is what GCC's file defines. */
-# include_next <limits.h>
-#endif
-
-/* The <limits.h> files in some gcc versions don't define LLONG_MIN,
- LLONG_MAX, and ULLONG_MAX. Instead only the values gcc defined for
- ages are available. */
-#if defined __USE_ISOC99 && defined __GNUC__
-# ifndef LLONG_MIN
-# define LLONG_MIN (-LLONG_MAX-1)
-# endif
-# ifndef LLONG_MAX
-# define LLONG_MAX __LONG_LONG_MAX__
-# endif
-# ifndef ULLONG_MAX
-# define ULLONG_MAX (LLONG_MAX * 2ULL + 1)
-# endif
-#endif
-
-/* The integer width macros are not defined by GCC's <limits.h> before
- GCC 7, or if _GNU_SOURCE rather than
- __STDC_WANT_IEC_60559_BFP_EXT__ is used to enable this feature. */
-#if __GLIBC_USE (IEC_60559_BFP_EXT)
-# ifndef CHAR_WIDTH
-# define CHAR_WIDTH 8
-# endif
-# ifndef SCHAR_WIDTH
-# define SCHAR_WIDTH 8
-# endif
-# ifndef UCHAR_WIDTH
-# define UCHAR_WIDTH 8
-# endif
-# ifndef SHRT_WIDTH
-# define SHRT_WIDTH 16
-# endif
-# ifndef USHRT_WIDTH
-# define USHRT_WIDTH 16
-# endif
-# ifndef INT_WIDTH
-# define INT_WIDTH 32
-# endif
-# ifndef UINT_WIDTH
-# define UINT_WIDTH 32
-# endif
-# ifndef LONG_WIDTH
-# define LONG_WIDTH __WORDSIZE
-# endif
-# ifndef ULONG_WIDTH
-# define ULONG_WIDTH __WORDSIZE
-# endif
-# ifndef LLONG_WIDTH
-# define LLONG_WIDTH 64
-# endif
-# ifndef ULLONG_WIDTH
-# define ULLONG_WIDTH 64
-# endif
-#endif /* Use IEC_60559_BFP_EXT. */
-
-#ifdef __USE_POSIX
-/* POSIX adds things to <limits.h>. */
-# include <bits/posix1_lim.h>
-#endif
-
-#ifdef __USE_POSIX2
-# include <bits/posix2_lim.h>
-#endif
-
-#ifdef __USE_XOPEN
-# include <bits/xopen_lim.h>
-#endif
+#include <misc/limits.h>
diff --git a/include/stdc-predef.h b/include/stdc-predef.h
index 5cc5eef..0a8122a 100644
--- a/include/stdc-predef.h
+++ b/include/stdc-predef.h
@@ -1,60 +1 @@
-/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#ifndef _STDC_PREDEF_H
-#define _STDC_PREDEF_H 1
-
-/* This header is separate from features.h so that the compiler can
- include it implicitly at the start of every compilation. It must
- not itself include <features.h> or any other header that includes
- <features.h> because the implicit include comes before any feature
- test macros that may be defined in a source file before it first
- explicitly includes a system header. GCC knows the name of this
- header in order to preinclude it. */
-
-/* glibc's intent is to support the IEC 559 math functionality, real
- and complex. If the GCC (4.9 and later) predefined macros
- specifying compiler intent are available, use them to determine
- whether the overall intent is to support these features; otherwise,
- presume an older compiler has intent to support these features and
- define these macros by default. */
-
-#ifdef __GCC_IEC_559
-# if __GCC_IEC_559 > 0
-# define __STDC_IEC_559__ 1
-# endif
-#else
-# define __STDC_IEC_559__ 1
-#endif
-
-#ifdef __GCC_IEC_559_COMPLEX
-# if __GCC_IEC_559_COMPLEX > 0
-# define __STDC_IEC_559_COMPLEX__ 1
-# endif
-#else
-# define __STDC_IEC_559_COMPLEX__ 1
-#endif
-
-/* wchar_t uses Unicode 10.0.0. Version 10.0 of the Unicode Standard is
- synchronized with ISO/IEC 10646:2017, fifth edition, plus
- the following additions from Amendment 1 to the fifth edition:
- - 56 emoji characters
- - 285 hentaigana
- - 3 additional Zanabazar Square characters */
-#define __STDC_ISO_10646__ 201706L
-
-#endif
+#include <misc/stdc-predef.h>
diff --git a/include/values.h b/include/values.h
index ae987a5..56ad18e 100644
--- a/include/values.h
+++ b/include/values.h
@@ -1,68 +1 @@
-/* Old compatibility names for <limits.h> and <float.h> constants.
- Copyright (C) 1995-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-/* This interface is obsolete. New programs should use
- <limits.h> and/or <float.h> instead of <values.h>. */
-
-#ifndef _VALUES_H
-#define _VALUES_H 1
-
-#include <features.h>
-
-#include <limits.h>
-
-#define _TYPEBITS(type) (sizeof (type) * CHAR_BIT)
-
-#define CHARBITS _TYPEBITS (char)
-#define SHORTBITS _TYPEBITS (short int)
-#define INTBITS _TYPEBITS (int)
-#define LONGBITS _TYPEBITS (long int)
-#define PTRBITS _TYPEBITS (char *)
-#define DOUBLEBITS _TYPEBITS (double)
-#define FLOATBITS _TYPEBITS (float)
-
-#define MINSHORT SHRT_MIN
-#define MININT INT_MIN
-#define MINLONG LONG_MIN
-
-#define MAXSHORT SHRT_MAX
-#define MAXINT INT_MAX
-#define MAXLONG LONG_MAX
-
-#define HIBITS MINSHORT
-#define HIBITL MINLONG
-
-
-#include <float.h>
-
-#define MAXDOUBLE DBL_MAX
-#define MAXFLOAT FLT_MAX
-#define MINDOUBLE DBL_MIN
-#define MINFLOAT FLT_MIN
-#define DMINEXP DBL_MIN_EXP
-#define FMINEXP FLT_MIN_EXP
-#define DMAXEXP DBL_MAX_EXP
-#define FMAXEXP FLT_MAX_EXP
-
-
-#ifdef __USE_MISC
-/* Some systems define this name instead of CHAR_BIT or CHARBITS. */
-# define BITSPERBYTE CHAR_BIT
-#endif
-
-#endif /* values.h */
+#include <misc/values.h>
diff --git a/misc/Makefile b/misc/Makefile
index 032f28f..e6c7389 100644
--- a/misc/Makefile
+++ b/misc/Makefile
@@ -23,21 +23,22 @@ subdir := misc
include ../Makeconfig
-headers := sys/uio.h bits/uio-ext.h bits/uio_lim.h \
- sys/ioctl.h bits/ioctls.h bits/ioctl-types.h \
- sys/ptrace.h sys/file.h sys/dir.h sys/cdefs.h \
- ar.h a.out.h libgen.h stab.h bits/stab.def sgtty.h \
- ttyent.h paths.h sys/reboot.h \
- sys/mman.h sys/param.h bits/param.h \
- fstab.h mntent.h search.h err.h error.h \
- sys/queue.h sysexits.h syscall.h sys/syscall.h sys/swap.h \
- sys/select.h sys/sysinfo.h \
- regexp.h bits/select.h bits/mman.h sys/xattr.h \
- syslog.h sys/syslog.h \
- bits/syslog.h bits/syslog-ldbl.h bits/syslog-path.h bits/error.h \
- bits/select2.h bits/hwcap.h sys/auxv.h \
- sys/sysmacros.h bits/sysmacros.h bits/types/struct_iovec.h \
- bits/err-ldbl.h bits/error-ldbl.h
+headers := \
+ a.out.h ar.h err.h error.h features.h fstab.h gnu-versions.h \
+ libgen.h limits.h mntent.h paths.h regexp.h search.h sgtty.h \
+ stab.h stdc-predef.h syscall.h sysexits.h syslog.h ttyent.h \
+ values.h \
+ bits/err-ldbl.h bits/error-ldbl.h bits/error.h bits/hwcap.h \
+ bits/ioctl-types.h bits/ioctls.h bits/libc-header-start.h \
+ bits/mman.h bits/param.h bits/select.h bits/select2.h \
+ bits/stab.def bits/syslog-ldbl.h bits/syslog-path.h \
+ bits/syslog.h bits/sysmacros.h bits/types/struct_iovec.h \
+ bits/uio-ext.h bits/uio_lim.h bits/xopen_lim.h \
+ gnu/libc-version.h \
+ sys/auxv.h sys/cdefs.h sys/dir.h sys/file.h sys/ioctl.h \
+ sys/mman.h sys/param.h sys/ptrace.h sys/queue.h sys/reboot.h \
+ sys/select.h sys/swap.h sys/syscall.h sys/sysinfo.h \
+ sys/syslog.h sys/sysmacros.h sys/uio.h sys/xattr.h
routines := brk sbrk sstk ioctl \
readv writev preadv preadv64 pwritev pwritev64 \
diff --git a/misc/bits/xopen_lim.h b/misc/bits/xopen_lim.h
new file mode 100644
index 0000000..b76a94b
--- /dev/null
+++ b/misc/bits/xopen_lim.h
@@ -0,0 +1,148 @@
+/* Copyright (C) 1996-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+/*
+ * Never include this file directly; use <limits.h> instead.
+ */
+
+/* Additional definitions from X/Open Portability Guide, Issue 4, Version 2
+ System Interfaces and Headers, 4.16 <limits.h>
+
+ Please note only the values which are not greater than the minimum
+ stated in the standard document are listed. The `sysconf' functions
+ should be used to obtain the actual value. */
+
+#ifndef _XOPEN_LIM_H
+#define _XOPEN_LIM_H 1
+
+/* We do not provide fixed values for
+
+ ARG_MAX Maximum length of argument to the `exec' function
+ including environment data.
+
+ ATEXIT_MAX Maximum number of functions that may be registered
+ with `atexit'.
+
+ CHILD_MAX Maximum number of simultaneous processes per real
+ user ID.
+
+ OPEN_MAX Maximum number of files that one process can have open
+ at anyone time.
+
+ PAGESIZE
+ PAGE_SIZE Size of bytes of a page.
+
+ PASS_MAX Maximum number of significant bytes in a password.
+
+ We only provide a fixed limit for
+
+ IOV_MAX Maximum number of `iovec' structures that one process has
+ available for use with `readv' or writev'.
+
+ if this is indeed fixed by the underlying system.
+*/
+
+
+/* Maximum number of `iovec' structures that may be used in a single call
+ to `readv', `writev', etc. */
+#define _XOPEN_IOV_MAX _POSIX_UIO_MAXIOV
+
+#include <bits/uio_lim.h>
+#ifdef __IOV_MAX
+# define IOV_MAX __IOV_MAX
+#else
+# undef IOV_MAX
+#endif
+
+/* Maximum value of `digit' in calls to the `printf' and `scanf'
+ functions. We have no limit, so return a reasonable value. */
+#define NL_ARGMAX _POSIX_ARG_MAX
+
+/* Maximum number of bytes in a `LANG' name. We have no limit. */
+#define NL_LANGMAX _POSIX2_LINE_MAX
+
+/* Maximum message number. We have no limit. */
+#define NL_MSGMAX INT_MAX
+
+/* Maximum number of bytes in N-to-1 collation mapping. We have no
+ limit. */
+#if defined __USE_GNU || !defined __USE_XOPEN2K8
+# define NL_NMAX INT_MAX
+#endif
+
+/* Maximum set number. We have no limit. */
+#define NL_SETMAX INT_MAX
+
+/* Maximum number of bytes in a message. We have no limit. */
+#define NL_TEXTMAX INT_MAX
+
+/* Default process priority. */
+#define NZERO 20
+
+
+/* Number of bits in a word of type `int'. */
+#ifdef INT_MAX
+# if INT_MAX == 32767
+# define WORD_BIT 16
+# else
+# if INT_MAX == 2147483647
+# define WORD_BIT 32
+# else
+/* Safe assumption. */
+# define WORD_BIT 64
+# endif
+# endif
+#elif defined __INT_MAX__
+# if __INT_MAX__ == 32767
+# define WORD_BIT 16
+# else
+# if __INT_MAX__ == 2147483647
+# define WORD_BIT 32
+# else
+/* Safe assumption. */
+# define WORD_BIT 64
+# endif
+# endif
+#else
+# define WORD_BIT 32
+#endif
+
+/* Number of bits in a word of type `long int'. */
+#ifdef LONG_MAX
+# if LONG_MAX == 2147483647
+# define LONG_BIT 32
+# else
+/* Safe assumption. */
+# define LONG_BIT 64
+# endif
+#elif defined __LONG_MAX__
+# if __LONG_MAX__ == 2147483647
+# define LONG_BIT 32
+# else
+/* Safe assumption. */
+# define LONG_BIT 64
+# endif
+#else
+# include <bits/wordsize.h>
+# if __WORDSIZE == 64
+# define LONG_BIT 64
+# else
+# define LONG_BIT 32
+# endif
+#endif
+
+#endif /* bits/xopen_lim.h */
diff --git a/misc/features.h b/misc/features.h
new file mode 100644
index 0000000..e016b3e
--- /dev/null
+++ b/misc/features.h
@@ -0,0 +1,477 @@
+/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _FEATURES_H
+#define _FEATURES_H 1
+
+/* These are defined by the user (or the compiler)
+ to specify the desired environment:
+
+ __STRICT_ANSI__ ISO Standard C.
+ _ISOC99_SOURCE Extensions to ISO C89 from ISO C99.
+ _ISOC11_SOURCE Extensions to ISO C99 from ISO C11.
+ __STDC_WANT_LIB_EXT2__
+ Extensions to ISO C99 from TR 27431-2:2010.
+ __STDC_WANT_IEC_60559_BFP_EXT__
+ Extensions to ISO C11 from TS 18661-1:2014.
+ __STDC_WANT_IEC_60559_FUNCS_EXT__
+ Extensions to ISO C11 from TS 18661-4:2015.
+ __STDC_WANT_IEC_60559_TYPES_EXT__
+ Extensions to ISO C11 from TS 18661-3:2015.
+
+ _POSIX_SOURCE IEEE Std 1003.1.
+ _POSIX_C_SOURCE If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+ if >=199309L, add IEEE Std 1003.1b-1993;
+ if >=199506L, add IEEE Std 1003.1c-1995;
+ if >=200112L, all of IEEE 1003.1-2004
+ if >=200809L, all of IEEE 1003.1-2008
+ _XOPEN_SOURCE Includes POSIX and XPG things. Set to 500 if
+ Single Unix conformance is wanted, to 600 for the
+ sixth revision, to 700 for the seventh revision.
+ _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+ _LARGEFILE_SOURCE Some more functions for correct standard I/O.
+ _LARGEFILE64_SOURCE Additional functionality from LFS for large files.
+ _FILE_OFFSET_BITS=N Select default filesystem interface.
+ _ATFILE_SOURCE Additional *at interfaces.
+ _GNU_SOURCE All of the above, plus GNU extensions.
+ _DEFAULT_SOURCE The default set of features (taking precedence over
+ __STRICT_ANSI__).
+
+ _FORTIFY_SOURCE Add security hardening to many library functions.
+ Set to 1 or 2; 2 performs stricter checks than 1.
+
+ _REENTRANT, _THREAD_SAFE
+ Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+
+ The `-ansi' switch to the GNU C compiler, and standards conformance
+ options such as `-std=c99', define __STRICT_ANSI__. If none of
+ these are defined, or if _DEFAULT_SOURCE is defined, the default is
+ to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+ 200809L, as well as enabling miscellaneous functions from BSD and
+ SVID. If more than one of these are defined, they accumulate. For
+ example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+ give you ISO C, 1003.1, and 1003.2, but nothing else.
+
+ These are defined by this file and are used by the
+ header files to decide what to declare or define:
+
+ __GLIBC_USE (F) Define things from feature set F. This is defined
+ to 1 or 0; the subsequent macros are either defined
+ or undefined, and those tests should be moved to
+ __GLIBC_USE.
+ __USE_ISOC11 Define ISO C11 things.
+ __USE_ISOC99 Define ISO C99 things.
+ __USE_ISOC95 Define ISO C90 AMD1 (C95) things.
+ __USE_ISOCXX11 Define ISO C++11 things.
+ __USE_POSIX Define IEEE Std 1003.1 things.
+ __USE_POSIX2 Define IEEE Std 1003.2 things.
+ __USE_POSIX199309 Define IEEE Std 1003.1, and .1b things.
+ __USE_POSIX199506 Define IEEE Std 1003.1, .1b, .1c and .1i things.
+ __USE_XOPEN Define XPG things.
+ __USE_XOPEN_EXTENDED Define X/Open Unix things.
+ __USE_UNIX98 Define Single Unix V2 things.
+ __USE_XOPEN2K Define XPG6 things.
+ __USE_XOPEN2KXSI Define XPG6 XSI things.
+ __USE_XOPEN2K8 Define XPG7 things.
+ __USE_XOPEN2K8XSI Define XPG7 XSI things.
+ __USE_LARGEFILE Define correct standard I/O things.
+ __USE_LARGEFILE64 Define LFS things with separate names.
+ __USE_FILE_OFFSET64 Define 64bit interface as default.
+ __USE_MISC Define things from 4.3BSD or System V Unix.
+ __USE_ATFILE Define *at interfaces and AT_* constants for them.
+ __USE_GNU Define GNU extensions.
+ __USE_FORTIFY_LEVEL Additional security measures used, according to level.
+
+ The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+ defined by this file unconditionally. `__GNU_LIBRARY__' is provided
+ only for compatibility. All new code should use the other symbols
+ to test for features.
+
+ All macros listed above as possibly being defined by this file are
+ explicitly undefined if they are not explicitly defined.
+ Feature-test macros that are not defined by the user or compiler
+ but are implied by the other feature-test macros defined (or by the
+ lack of any definitions) are defined by the file.
+
+ ISO C feature test macros depend on the definition of the macro
+ when an affected header is included, not when the first system
+ header is included, and so they are handled in
+ <bits/libc-header-start.h>, which does not have a multiple include
+ guard. Feature test macros that can be handled from the first
+ system header included are handled here. */
+
+
+/* Undefine everything, so we get a clean slate. */
+#undef __USE_ISOC11
+#undef __USE_ISOC99
+#undef __USE_ISOC95
+#undef __USE_ISOCXX11
+#undef __USE_POSIX
+#undef __USE_POSIX2
+#undef __USE_POSIX199309
+#undef __USE_POSIX199506
+#undef __USE_XOPEN
+#undef __USE_XOPEN_EXTENDED
+#undef __USE_UNIX98
+#undef __USE_XOPEN2K
+#undef __USE_XOPEN2KXSI
+#undef __USE_XOPEN2K8
+#undef __USE_XOPEN2K8XSI
+#undef __USE_LARGEFILE
+#undef __USE_LARGEFILE64
+#undef __USE_FILE_OFFSET64
+#undef __USE_MISC
+#undef __USE_ATFILE
+#undef __USE_GNU
+#undef __USE_FORTIFY_LEVEL
+#undef __KERNEL_STRICT_NAMES
+#undef __GLIBC_USE_DEPRECATED_GETS
+#undef __GLIBC_USE_DEPRECATED_SCANF
+
+/* Suppress kernel-name space pollution unless user expressedly asks
+ for it. */
+#ifndef _LOOSE_KERNEL_NAMES
+# define __KERNEL_STRICT_NAMES
+#endif
+
+/* Convenience macro to test the version of gcc.
+ Use like this:
+ #if __GNUC_PREREQ (2,8)
+ ... code requiring gcc 2.8 or later ...
+ #endif
+ Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+ added in 2.0. */
+#if defined __GNUC__ && defined __GNUC_MINOR__
+# define __GNUC_PREREQ(maj, min) \
+ ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+#else
+# define __GNUC_PREREQ(maj, min) 0
+#endif
+
+/* Similarly for clang. Features added to GCC after version 4.2 may
+ or may not also be available in clang, and clang's definitions of
+ __GNUC(_MINOR)__ are fixed at 4 and 2 respectively. Not all such
+ features can be queried via __has_extension/__has_feature. */
+#if defined __clang_major__ && defined __clang_minor__
+# define __glibc_clang_prereq(maj, min) \
+ ((__clang_major__ << 16) + __clang_minor__ >= ((maj) << 16) + (min))
+#else
+# define __glibc_clang_prereq(maj, min) 0
+#endif
+
+/* Whether to use feature set F. */
+#define __GLIBC_USE(F) __GLIBC_USE_ ## F
+
+/* _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+ _DEFAULT_SOURCE. If _DEFAULT_SOURCE is present we do not
+ issue a warning; the expectation is that the source is being
+ transitioned to use the new macro. */
+#if (defined _BSD_SOURCE || defined _SVID_SOURCE) \
+ && !defined _DEFAULT_SOURCE
+# warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"
+# undef _DEFAULT_SOURCE
+# define _DEFAULT_SOURCE 1
+#endif
+
+/* If _GNU_SOURCE was defined by the user, turn on all the other features. */
+#ifdef _GNU_SOURCE
+# undef _ISOC95_SOURCE
+# define _ISOC95_SOURCE 1
+# undef _ISOC99_SOURCE
+# define _ISOC99_SOURCE 1
+# undef _ISOC11_SOURCE
+# define _ISOC11_SOURCE 1
+# undef _POSIX_SOURCE
+# define _POSIX_SOURCE 1
+# undef _POSIX_C_SOURCE
+# define _POSIX_C_SOURCE 200809L
+# undef _XOPEN_SOURCE
+# define _XOPEN_SOURCE 700
+# undef _XOPEN_SOURCE_EXTENDED
+# define _XOPEN_SOURCE_EXTENDED 1
+# undef _LARGEFILE64_SOURCE
+# define _LARGEFILE64_SOURCE 1
+# undef _DEFAULT_SOURCE
+# define _DEFAULT_SOURCE 1
+# undef _ATFILE_SOURCE
+# define _ATFILE_SOURCE 1
+#endif
+
+/* If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+ define _DEFAULT_SOURCE. */
+#if (defined _DEFAULT_SOURCE \
+ || (!defined __STRICT_ANSI__ \
+ && !defined _ISOC99_SOURCE && !defined _ISOC11_SOURCE \
+ && !defined _POSIX_SOURCE && !defined _POSIX_C_SOURCE \
+ && !defined _XOPEN_SOURCE))
+# undef _DEFAULT_SOURCE
+# define _DEFAULT_SOURCE 1
+#endif
+
+/* This is to enable the ISO C11 extension. */
+#if (defined _ISOC11_SOURCE \
+ || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 201112L))
+# define __USE_ISOC11 1
+#endif
+
+/* This is to enable the ISO C99 extension. */
+#if (defined _ISOC99_SOURCE || defined _ISOC11_SOURCE \
+ || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
+# define __USE_ISOC99 1
+#endif
+
+/* This is to enable the ISO C90 Amendment 1:1995 extension. */
+#if (defined _ISOC99_SOURCE || defined _ISOC11_SOURCE \
+ || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199409L))
+# define __USE_ISOC95 1
+#endif
+
+#ifdef __cplusplus
+/* This is to enable compatibility for ISO C++17. */
+# if __cplusplus >= 201703L
+# define __USE_ISOC11 1
+# endif
+/* This is to enable compatibility for ISO C++11.
+ Check the temporary macro for now, too. */
+# if __cplusplus >= 201103L || defined __GXX_EXPERIMENTAL_CXX0X__
+# define __USE_ISOCXX11 1
+# define __USE_ISOC99 1
+# endif
+#endif
+
+/* If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+ is defined, use POSIX.1-2008 (or another version depending on
+ _XOPEN_SOURCE). */
+#ifdef _DEFAULT_SOURCE
+# if !defined _POSIX_SOURCE && !defined _POSIX_C_SOURCE
+# define __USE_POSIX_IMPLICITLY 1
+# endif
+# undef _POSIX_SOURCE
+# define _POSIX_SOURCE 1
+# undef _POSIX_C_SOURCE
+# define _POSIX_C_SOURCE 200809L
+#endif
+
+#if ((!defined __STRICT_ANSI__ \
+ || (defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) >= 500)) \
+ && !defined _POSIX_SOURCE && !defined _POSIX_C_SOURCE)
+# define _POSIX_SOURCE 1
+# if defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) < 500
+# define _POSIX_C_SOURCE 2
+# elif defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) < 600
+# define _POSIX_C_SOURCE 199506L
+# elif defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) < 700
+# define _POSIX_C_SOURCE 200112L
+# else
+# define _POSIX_C_SOURCE 200809L
+# endif
+# define __USE_POSIX_IMPLICITLY 1
+#endif
+
+/* Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+ defined in all multithreaded code. GNU libc has not required this
+ for many years. We now treat them as compatibility synonyms for
+ _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+ comprehensive support for multithreaded code. Using them never
+ lowers the selected level of POSIX conformance, only raises it. */
+#if ((!defined _POSIX_C_SOURCE || (_POSIX_C_SOURCE - 0) < 199506L) \
+ && (defined _REENTRANT || defined _THREAD_SAFE))
+# define _POSIX_SOURCE 1
+# undef _POSIX_C_SOURCE
+# define _POSIX_C_SOURCE 199506L
+#endif
+
+#if (defined _POSIX_SOURCE \
+ || (defined _POSIX_C_SOURCE && _POSIX_C_SOURCE >= 1) \
+ || defined _XOPEN_SOURCE)
+# define __USE_POSIX 1
+#endif
+
+#if defined _POSIX_C_SOURCE && _POSIX_C_SOURCE >= 2 || defined _XOPEN_SOURCE
+# define __USE_POSIX2 1
+#endif
+
+#if defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199309L
+# define __USE_POSIX199309 1
+#endif
+
+#if defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199506L
+# define __USE_POSIX199506 1
+#endif
+
+#if defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200112L
+# define __USE_XOPEN2K 1
+# undef __USE_ISOC95
+# define __USE_ISOC95 1
+# undef __USE_ISOC99
+# define __USE_ISOC99 1
+#endif
+
+#if defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200809L
+# define __USE_XOPEN2K8 1
+# undef _ATFILE_SOURCE
+# define _ATFILE_SOURCE 1
+#endif
+
+#ifdef _XOPEN_SOURCE
+# define __USE_XOPEN 1
+# if (_XOPEN_SOURCE - 0) >= 500
+# define __USE_XOPEN_EXTENDED 1
+# define __USE_UNIX98 1
+# undef _LARGEFILE_SOURCE
+# define _LARGEFILE_SOURCE 1
+# if (_XOPEN_SOURCE - 0) >= 600
+# if (_XOPEN_SOURCE - 0) >= 700
+# define __USE_XOPEN2K8 1
+# define __USE_XOPEN2K8XSI 1
+# endif
+# define __USE_XOPEN2K 1
+# define __USE_XOPEN2KXSI 1
+# undef __USE_ISOC95
+# define __USE_ISOC95 1
+# undef __USE_ISOC99
+# define __USE_ISOC99 1
+# endif
+# else
+# ifdef _XOPEN_SOURCE_EXTENDED
+# define __USE_XOPEN_EXTENDED 1
+# endif
+# endif
+#endif
+
+#ifdef _LARGEFILE_SOURCE
+# define __USE_LARGEFILE 1
+#endif
+
+#ifdef _LARGEFILE64_SOURCE
+# define __USE_LARGEFILE64 1
+#endif
+
+#if defined _FILE_OFFSET_BITS && _FILE_OFFSET_BITS == 64
+# define __USE_FILE_OFFSET64 1
+#endif
+
+#if defined _DEFAULT_SOURCE
+# define __USE_MISC 1
+#endif
+
+#ifdef _ATFILE_SOURCE
+# define __USE_ATFILE 1
+#endif
+
+#ifdef _GNU_SOURCE
+# define __USE_GNU 1
+#endif
+
+#if defined _FORTIFY_SOURCE && _FORTIFY_SOURCE > 0
+# if !defined __OPTIMIZE__ || __OPTIMIZE__ <= 0
+# warning _FORTIFY_SOURCE requires compiling with optimization (-O)
+# elif !__GNUC_PREREQ (4, 1)
+# warning _FORTIFY_SOURCE requires GCC 4.1 or later
+# elif _FORTIFY_SOURCE > 1
+# define __USE_FORTIFY_LEVEL 2
+# else
+# define __USE_FORTIFY_LEVEL 1
+# endif
+#endif
+#ifndef __USE_FORTIFY_LEVEL
+# define __USE_FORTIFY_LEVEL 0
+#endif
+
+/* The function 'gets' existed in C89, but is impossible to use
+ safely. It has been removed from ISO C11 and ISO C++14. Note: for
+ compatibility with various implementations of <cstdio>, this test
+ must consider only the value of __cplusplus when compiling C++. */
+#if defined __cplusplus ? __cplusplus >= 201402L : defined __USE_ISOC11
+# define __GLIBC_USE_DEPRECATED_GETS 0
+#else
+# define __GLIBC_USE_DEPRECATED_GETS 1
+#endif
+
+/* GNU formerly extended the scanf functions with modified format
+ specifiers %as, %aS, and %a[...] that allocate a buffer for the
+ input using malloc. This extension conflicts with ISO C99, which
+ defines %a as a standalone format specifier that reads a floating-
+ point number; moreover, POSIX.1-2008 provides the same feature
+ using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+
+ We now follow C99 unless GNU extensions are active and the compiler
+ is specifically in C89 or C++98 mode (strict or not). For
+ instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+ or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+ old extension. */
+#if (defined __USE_GNU \
+ && (defined __cplusplus \
+ ? (__cplusplus < 201103L && !defined __GXX_EXPERIMENTAL_CXX0X__) \
+ : (!defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L)))
+# define __GLIBC_USE_DEPRECATED_SCANF 1
+#else
+# define __GLIBC_USE_DEPRECATED_SCANF 0
+#endif
+
+/* Get definitions of __STDC_* predefined macros, if the compiler has
+ not preincluded this header automatically. */
+#include <stdc-predef.h>
+
+/* This macro indicates that the installed library is the GNU C Library.
+ For historic reasons the value now is 6 and this will stay from now
+ on. The use of this variable is deprecated. Use __GLIBC__ and
+ __GLIBC_MINOR__ now (see below) when you want to test for a specific
+ GNU C library version and use the values in <gnu/lib-names.h> to get
+ the sonames of the shared libraries. */
+#undef __GNU_LIBRARY__
+#define __GNU_LIBRARY__ 6
+
+/* Major and minor version number of the GNU C library package. Use
+ these macros to test for features in specific releases. */
+#define __GLIBC__ 2
+#define __GLIBC_MINOR__ 29
+
+#define __GLIBC_PREREQ(maj, min) \
+ ((__GLIBC__ << 16) + __GLIBC_MINOR__ >= ((maj) << 16) + (min))
+
+/* This is here only because every header file already includes this one. */
+#ifndef __ASSEMBLER__
+# ifndef _SYS_CDEFS_H
+# include <sys/cdefs.h>
+# endif
+
+/* If we don't have __REDIRECT, prototypes will be missing if
+ __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64]. */
+# if defined __USE_FILE_OFFSET64 && !defined __REDIRECT
+# define __USE_LARGEFILE 1
+# define __USE_LARGEFILE64 1
+# endif
+
+#endif /* !ASSEMBLER */
+
+/* Decide whether we can define 'extern inline' functions in headers. */
+#if __GNUC_PREREQ (2, 7) && defined __OPTIMIZE__ \
+ && !defined __OPTIMIZE_SIZE__ && !defined __NO_INLINE__ \
+ && defined __extern_inline
+# define __USE_EXTERN_INLINES 1
+#endif
+
+
+/* This is here only because every header file already includes this one.
+ Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+ <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+ that will always return failure (and set errno to ENOSYS). */
+#include <gnu/stubs.h>
+
+
+#endif /* features.h */
diff --git a/misc/gnu-versions.h b/misc/gnu-versions.h
new file mode 100644
index 0000000..6db552a
--- /dev/null
+++ b/misc/gnu-versions.h
@@ -0,0 +1,52 @@
+/* Header with interface version macros for library pieces copied elsewhere.
+ Copyright (C) 1995-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _GNU_VERSIONS_H
+#define _GNU_VERSIONS_H 1
+
+/* This file exists to define these few macros. Each specifies a version
+ number associated with the library interface of a piece of the C library
+ which is also distributed with other GNU packages. These pieces are
+ both part of the GNU C library and also distributed with other GNU
+ packages so those packages may use their facilities on systems lacking
+ the GNU C library. The source files for each piece surround all their
+ code with `#ifndef ELIDE_CODE' after defining it with this:
+
+ #define OBSTACK_INTERFACE_VERSION 1
+ #if !defined (_LIBC) && defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1
+ #include <gnu-versions.h>
+ #if _GNU_OBSTACK_INTERFACE_VERSION == OBSTACK_INTERFACE_VERSION
+ #define ELIDE_CODE
+ #endif
+ #endif
+
+ This allows those one to avoid compiling those files when part of a GNU
+ package not libc, on a system using a GNU C library that supports the
+ same interface.
+
+ Please preserve the format of the comments after each macro. And
+ remember, if any of these versions change, the libc.so major version
+ number must change too (so avoid it)! */
+
+#define _GNU_OBSTACK_INTERFACE_VERSION 1 /* vs malloc/obstack.c */
+#define _GNU_REGEX_INTERFACE_VERSION 1 /* vs posix/regex.c */
+#define _GNU_GLOB_INTERFACE_VERSION 2 /* vs posix/glob.c */
+#define _GNU_GETOPT_INTERFACE_VERSION 2 /* vs posix/getopt.c and
+ posix/getopt1.c */
+
+#endif /* gnu-versions.h */
diff --git a/misc/gnu/libc-version.h b/misc/gnu/libc-version.h
new file mode 100644
index 0000000..0e2e91b
--- /dev/null
+++ b/misc/gnu/libc-version.h
@@ -0,0 +1,34 @@
+/* Interface to GNU libc specific functions for version information.
+ Copyright (C) 1998-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _GNU_LIBC_VERSION_H
+#define _GNU_LIBC_VERSION_H 1
+
+#include <features.h>
+
+__BEGIN_DECLS
+
+/* Return string describing release status of currently running GNU libc. */
+extern const char *gnu_get_libc_release (void) __THROW;
+
+/* Return string describing version of currently running GNU libc. */
+extern const char *gnu_get_libc_version (void) __THROW;
+
+__END_DECLS
+
+#endif /* gnu/libc-version.h */
diff --git a/misc/limits.h b/misc/limits.h
new file mode 100644
index 0000000..08bb524
--- /dev/null
+++ b/misc/limits.h
@@ -0,0 +1,192 @@
+/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+/*
+ * ISO C99 Standard: 7.10/5.2.4.2.1 Sizes of integer types <limits.h>
+ */
+
+#ifndef _LIBC_LIMITS_H_
+#define _LIBC_LIMITS_H_ 1
+
+#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
+#include <bits/libc-header-start.h>
+
+
+/* Maximum length of any multibyte character in any locale.
+ We define this value here since the gcc header does not define
+ the correct value. */
+#define MB_LEN_MAX 16
+
+
+/* If we are not using GNU CC we have to define all the symbols ourself.
+ Otherwise use gcc's definitions (see below). */
+#if !defined __GNUC__ || __GNUC__ < 2
+
+/* We only protect from multiple inclusion here, because all the other
+ #include's protect themselves, and in GCC 2 we may #include_next through
+ multiple copies of this file before we get to GCC's. */
+# ifndef _LIMITS_H
+# define _LIMITS_H 1
+
+#include <bits/wordsize.h>
+
+/* We don't have #include_next.
+ Define ANSI <limits.h> for standard 32-bit words. */
+
+/* These assume 8-bit `char's, 16-bit `short int's,
+ and 32-bit `int's and `long int's. */
+
+/* Number of bits in a `char'. */
+# define CHAR_BIT 8
+
+/* Minimum and maximum values a `signed char' can hold. */
+# define SCHAR_MIN (-128)
+# define SCHAR_MAX 127
+
+/* Maximum value an `unsigned char' can hold. (Minimum is 0.) */
+# define UCHAR_MAX 255
+
+/* Minimum and maximum values a `char' can hold. */
+# ifdef __CHAR_UNSIGNED__
+# define CHAR_MIN 0
+# define CHAR_MAX UCHAR_MAX
+# else
+# define CHAR_MIN SCHAR_MIN
+# define CHAR_MAX SCHAR_MAX
+# endif
+
+/* Minimum and maximum values a `signed short int' can hold. */
+# define SHRT_MIN (-32768)
+# define SHRT_MAX 32767
+
+/* Maximum value an `unsigned short int' can hold. (Minimum is 0.) */
+# define USHRT_MAX 65535
+
+/* Minimum and maximum values a `signed int' can hold. */
+# define INT_MIN (-INT_MAX - 1)
+# define INT_MAX 2147483647
+
+/* Maximum value an `unsigned int' can hold. (Minimum is 0.) */
+# define UINT_MAX 4294967295U
+
+/* Minimum and maximum values a `signed long int' can hold. */
+# if __WORDSIZE == 64
+# define LONG_MAX 9223372036854775807L
+# else
+# define LONG_MAX 2147483647L
+# endif
+# define LONG_MIN (-LONG_MAX - 1L)
+
+/* Maximum value an `unsigned long int' can hold. (Minimum is 0.) */
+# if __WORDSIZE == 64
+# define ULONG_MAX 18446744073709551615UL
+# else
+# define ULONG_MAX 4294967295UL
+# endif
+
+# ifdef __USE_ISOC99
+
+/* Minimum and maximum values a `signed long long int' can hold. */
+# define LLONG_MAX 9223372036854775807LL
+# define LLONG_MIN (-LLONG_MAX - 1LL)
+
+/* Maximum value an `unsigned long long int' can hold. (Minimum is 0.) */
+# define ULLONG_MAX 18446744073709551615ULL
+
+# endif /* ISO C99 */
+
+# endif /* limits.h */
+#endif /* GCC 2. */
+
+#endif /* !_LIBC_LIMITS_H_ */
+
+ /* Get the compiler's limits.h, which defines almost all the ISO constants.
+
+ We put this #include_next outside the double inclusion check because
+ it should be possible to include this file more than once and still get
+ the definitions from gcc's header. */
+#if defined __GNUC__ && !defined _GCC_LIMITS_H_
+/* `_GCC_LIMITS_H_' is what GCC's file defines. */
+# include_next <limits.h>
+#endif
+
+/* The <limits.h> files in some gcc versions don't define LLONG_MIN,
+ LLONG_MAX, and ULLONG_MAX. Instead only the values gcc defined for
+ ages are available. */
+#if defined __USE_ISOC99 && defined __GNUC__
+# ifndef LLONG_MIN
+# define LLONG_MIN (-LLONG_MAX-1)
+# endif
+# ifndef LLONG_MAX
+# define LLONG_MAX __LONG_LONG_MAX__
+# endif
+# ifndef ULLONG_MAX
+# define ULLONG_MAX (LLONG_MAX * 2ULL + 1)
+# endif
+#endif
+
+/* The integer width macros are not defined by GCC's <limits.h> before
+ GCC 7, or if _GNU_SOURCE rather than
+ __STDC_WANT_IEC_60559_BFP_EXT__ is used to enable this feature. */
+#if __GLIBC_USE (IEC_60559_BFP_EXT)
+# ifndef CHAR_WIDTH
+# define CHAR_WIDTH 8
+# endif
+# ifndef SCHAR_WIDTH
+# define SCHAR_WIDTH 8
+# endif
+# ifndef UCHAR_WIDTH
+# define UCHAR_WIDTH 8
+# endif
+# ifndef SHRT_WIDTH
+# define SHRT_WIDTH 16
+# endif
+# ifndef USHRT_WIDTH
+# define USHRT_WIDTH 16
+# endif
+# ifndef INT_WIDTH
+# define INT_WIDTH 32
+# endif
+# ifndef UINT_WIDTH
+# define UINT_WIDTH 32
+# endif
+# ifndef LONG_WIDTH
+# define LONG_WIDTH __WORDSIZE
+# endif
+# ifndef ULONG_WIDTH
+# define ULONG_WIDTH __WORDSIZE
+# endif
+# ifndef LLONG_WIDTH
+# define LLONG_WIDTH 64
+# endif
+# ifndef ULLONG_WIDTH
+# define ULLONG_WIDTH 64
+# endif
+#endif /* Use IEC_60559_BFP_EXT. */
+
+#ifdef __USE_POSIX
+/* POSIX adds things to <limits.h>. */
+# include <bits/posix1_lim.h>
+#endif
+
+#ifdef __USE_POSIX2
+# include <bits/posix2_lim.h>
+#endif
+
+#ifdef __USE_XOPEN
+# include <bits/xopen_lim.h>
+#endif
diff --git a/misc/stdc-predef.h b/misc/stdc-predef.h
new file mode 100644
index 0000000..5cc5eef
--- /dev/null
+++ b/misc/stdc-predef.h
@@ -0,0 +1,60 @@
+/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _STDC_PREDEF_H
+#define _STDC_PREDEF_H 1
+
+/* This header is separate from features.h so that the compiler can
+ include it implicitly at the start of every compilation. It must
+ not itself include <features.h> or any other header that includes
+ <features.h> because the implicit include comes before any feature
+ test macros that may be defined in a source file before it first
+ explicitly includes a system header. GCC knows the name of this
+ header in order to preinclude it. */
+
+/* glibc's intent is to support the IEC 559 math functionality, real
+ and complex. If the GCC (4.9 and later) predefined macros
+ specifying compiler intent are available, use them to determine
+ whether the overall intent is to support these features; otherwise,
+ presume an older compiler has intent to support these features and
+ define these macros by default. */
+
+#ifdef __GCC_IEC_559
+# if __GCC_IEC_559 > 0
+# define __STDC_IEC_559__ 1
+# endif
+#else
+# define __STDC_IEC_559__ 1
+#endif
+
+#ifdef __GCC_IEC_559_COMPLEX
+# if __GCC_IEC_559_COMPLEX > 0
+# define __STDC_IEC_559_COMPLEX__ 1
+# endif
+#else
+# define __STDC_IEC_559_COMPLEX__ 1
+#endif
+
+/* wchar_t uses Unicode 10.0.0. Version 10.0 of the Unicode Standard is
+ synchronized with ISO/IEC 10646:2017, fifth edition, plus
+ the following additions from Amendment 1 to the fifth edition:
+ - 56 emoji characters
+ - 285 hentaigana
+ - 3 additional Zanabazar Square characters */
+#define __STDC_ISO_10646__ 201706L
+
+#endif
diff --git a/misc/values.h b/misc/values.h
new file mode 100644
index 0000000..ae987a5
--- /dev/null
+++ b/misc/values.h
@@ -0,0 +1,68 @@
+/* Old compatibility names for <limits.h> and <float.h> constants.
+ Copyright (C) 1995-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+/* This interface is obsolete. New programs should use
+ <limits.h> and/or <float.h> instead of <values.h>. */
+
+#ifndef _VALUES_H
+#define _VALUES_H 1
+
+#include <features.h>
+
+#include <limits.h>
+
+#define _TYPEBITS(type) (sizeof (type) * CHAR_BIT)
+
+#define CHARBITS _TYPEBITS (char)
+#define SHORTBITS _TYPEBITS (short int)
+#define INTBITS _TYPEBITS (int)
+#define LONGBITS _TYPEBITS (long int)
+#define PTRBITS _TYPEBITS (char *)
+#define DOUBLEBITS _TYPEBITS (double)
+#define FLOATBITS _TYPEBITS (float)
+
+#define MINSHORT SHRT_MIN
+#define MININT INT_MIN
+#define MINLONG LONG_MIN
+
+#define MAXSHORT SHRT_MAX
+#define MAXINT INT_MAX
+#define MAXLONG LONG_MAX
+
+#define HIBITS MINSHORT
+#define HIBITL MINLONG
+
+
+#include <float.h>
+
+#define MAXDOUBLE DBL_MAX
+#define MAXFLOAT FLT_MAX
+#define MINDOUBLE DBL_MIN
+#define MINFLOAT FLT_MIN
+#define DMINEXP DBL_MIN_EXP
+#define FMINEXP FLT_MIN_EXP
+#define DMAXEXP DBL_MAX_EXP
+#define FMAXEXP FLT_MAX_EXP
+
+
+#ifdef __USE_MISC
+/* Some systems define this name instead of CHAR_BIT or CHARBITS. */
+# define BITSPERBYTE CHAR_BIT
+#endif
+
+#endif /* values.h */
diff --git a/sysdeps/mach/hurd/bits/errno.h b/sysdeps/mach/hurd/bits/errno.h
index 8f2fbfd..8e8d1cc 100644
--- a/sysdeps/mach/hurd/bits/errno.h
+++ b/sysdeps/mach/hurd/bits/errno.h
@@ -1,6 +1,7 @@
/* This file generated by errnos.awk from
errno.texi
stdc-predef.h
+ ../misc/stdc-predef.h
libc-symbols.h
mach/message.h
mach/kern_return.h