[ping4][PATCH 01/19 v2] Add new macro IN_MODULE to identify module in which source is built

[Siddhesh Poyarekar <siddhesh at redhat dot com>]

Ping!

On Wed, Oct 01, 2014 at 01:46:13PM +0530, Siddhesh Poyarekar wrote:
> Rebased on current master, the only change is an unnecessary
> whitespace addition I had missed earlier.  Ping!
> 
> Siddhesh
> 
> commit 3be0b793dc7e72fde3e2c728ca42541bd0a29c9c
> Author: Siddhesh Poyarekar <siddhesh@redhat.com>
> Date:   Thu Aug 21 10:19:31 2014 +0530
> 
>     Add new macro IN_MODULE to identify module in which source is built
>     
>     The current scheme to identify which module a translation unit is
>     built in depends on defining multiple macros IS_IN_* and also defining
>     NOT_IN_libc if we're building a non-libc module.  In addition, there
>     is an IN_LIB macro that does effectively the same thing, but for
>     different modules (notably the systemtap probes).  This macro scheme
>     unifies both ideas to use just one macro IN_MODULE and assign it a
>     value depending on the module it is being built into.  If the module
>     is not defined, it defaults to MODULE_libc.
>     
>     Patches that follow will remove uses of IS_IN_* variables with the
>     IS_IN() macro.  libc-symbols.h has been converted already to give an
>     example of how such a transition will look.
>     
>     Verified that there are no relevant source changes.  One source change
>     that will crop up repeatedly is that of nscd_stat, since it uses the
>     build timestamp as a constant in its logic.
>     
>     	* Makeconfig (in-module): Get value of libof set for the
>     	translation unit.
>     	(module-def): Set IN_MODULE based on value of libof-*.
>     	(CPPFLAGS): Add $(module-def) to CPPFLAGS.
>     	* Makerules: Don't suffix routine names for nonlib.
>     	* include/libc-modules.h: New file.
>     	* include/libc-symbols.h: Include libc-modules.h
>     	(IS_IN): New macro to replace IS_IN_* macros.
>     	* elf/Makefile: Set libof-* for each routine.
>     	* elf/rtld-Rules: Likewise.
>     	* extra-modules.mk: Likewise.
>     	* iconv/Makefile: Likewise.
>     	* iconvdata/Makefile: Likewise.
>     	* locale/Makefile: Likewise.
>     	* malloc/Makefile: Likewise.
>     	* nss/Makefile: Likewise.
>     	* sysdeps/gnu/Makefile: Likewise.
>     	* sysdeps/ieee754/ldbl-opt/Makefile: Likewise.
>     	* sysdeps/unix/sysv/linux/Makefile: Likewise.
>     	* sysdeps/s390/s390-64/Makefile: Likewise.
>     	* nscd/Makefile: Set libof-* for each routine.  Set CFLAGS and
>     	CPPFLAGS for nscd instead of nonlib.
> 
> diff --git a/Makeconfig b/Makeconfig
> index 24a3b82..671eceb 100644
> --- a/Makeconfig
> +++ b/Makeconfig
> @@ -813,6 +813,11 @@ endif	# $(+cflags) == ""
>  # of many little headers in the include directory.
>  libio-include = -I$(..)libio
>  
> +in-module = $(strip $(foreach lib,$(libof-$(basename $(@F))) $(libof-$(<F)) \
> +				  $(libof-$(@F)),-DIN_MODULE=MODULE_$(lib)))
> +
> +module-def = $(if $(in-module),$(in-module),-DIN_MODULE=MODULE_libc)
> +
>  # These are the variables that the implicit compilation rules use.
>  # Note that we can't use -std=* in CPPFLAGS, because it overrides
>  # the implicit -lang-asm and breaks cpp behavior for .S files--notably
> @@ -821,7 +826,7 @@ CPPFLAGS = $(config-extra-cppflags) $(CPPUNDEFS) $(CPPFLAGS-config) \
>  	   $($(subdir)-CPPFLAGS) \
>  	   $(+includes) $(defines) \
>  	   -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \
> -	   $(CPPFLAGS-$(suffix $@)) \
> +	   $(CPPFLAGS-$(suffix $@)) $(module-def) \
>  	   $(foreach lib,$(libof-$(basename $(@F))) \
>  			 $(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \
>  	   $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F)))
> diff --git a/Makerules b/Makerules
> index 3951bb1..3f4b55b 100644
> --- a/Makerules
> +++ b/Makerules
> @@ -1156,7 +1156,7 @@ xcheck: xtests
>  
>  all-nonlib = $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) $(others))
>  ifneq (,$(all-nonlib))
> -cpp-srcs-left = $(all-nonlib:=.c) $(all-nonlib:=.cc)
> +cpp-srcs-left = $(all-nonlib)
>  lib := nonlib
>  include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
>  endif
> diff --git a/elf/Makefile b/elf/Makefile
> index 94074f3..6263a47 100644
> --- a/elf/Makefile
> +++ b/elf/Makefile
> @@ -436,7 +436,8 @@ $(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
>  
>  SYSCONF-FLAGS := -D'SYSCONFDIR="$(sysconfdir)"'
>  CFLAGS-ldconfig.c = $(SYSCONF-FLAGS) -D'LIBDIR="$(libdir)"' \
> -		    -D'SLIBDIR="$(slibdir)"' -DIS_IN_ldconfig=1
> +		    -D'SLIBDIR="$(slibdir)"' -DIS_IN_ldconfig=1 -DNOT_IN_libc=1
> +libof-ldconfig = ldconfig
>  CFLAGS-dl-cache.c = $(SYSCONF-FLAGS)
>  CFLAGS-cache.c = $(SYSCONF-FLAGS)
>  CFLAGS-rtld.c = $(SYSCONF-FLAGS)
> @@ -444,6 +445,10 @@ CFLAGS-rtld.c = $(SYSCONF-FLAGS)
>  CPPFLAGS-.os += $(if $(filter $(@F),$(patsubst %,%.os,$(all-rtld-routines))),\
>  		     -DNOT_IN_libc=1 -DIS_IN_rtld=1 -DIN_LIB=rtld)
>  
> +cpp-srcs-left := $(all-rtld-routines:=.os)
> +lib := rtld
> +include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
> +
>  test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(strip $(modules-names))))
>  generated += $(addsuffix .so,$(strip $(modules-names)))
>  
> diff --git a/elf/rtld-Rules b/elf/rtld-Rules
> index 0a5d6af..4d78d90 100644
> --- a/elf/rtld-Rules
> +++ b/elf/rtld-Rules
> @@ -138,6 +138,11 @@ ifdef rtld-depfiles
>  -include $(rtld-depfiles)
>  endif
>  
> +# Set libof-* for each routine.
> +cpp-srcs-left := $(subst .os,,$(rtld-modules))
> +lib := rtld
> +include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
> +
>  # This here is the whole point of all the shenanigans.
>  rtld-CPPFLAGS := -DNOT_IN_libc=1 -DIS_IN_rtld=1 -DIN_LIB=rtld
>  
> diff --git a/extra-modules.mk b/extra-modules.mk
> index c7ed850..9c2e4d2 100644
> --- a/extra-modules.mk
> +++ b/extra-modules.mk
> @@ -6,4 +6,5 @@
>  module := $(firstword $(extra-modules-left))
>  extra-modules-left := $(filter-out $(module),$(extra-modules-left))
>  
> +libof-$(notdir $(module)) := extramodules
>  CPPFLAGS-$(module).c += -DNOT_IN_libc
> diff --git a/iconv/Makefile b/iconv/Makefile
> index 48d17d7..8031a88 100644
> --- a/iconv/Makefile
> +++ b/iconv/Makefile
> @@ -52,11 +52,12 @@ CFLAGS-gconv_cache.c += -DGCONV_DIR='"$(gconvdir)"'
>  CFLAGS-gconv_conf.c = -DGCONV_PATH='"$(gconvdir)"'
>  CFLAGS-iconvconfig.c = -DGCONV_PATH='"$(gconvdir)"' -DGCONV_DIR='"$(gconvdir)"'
>  
> -CPPFLAGS-iconv_charmap = -DNOT_IN_libc
> -CPPFLAGS-linereader = -DNOT_IN_libc
> -CPPFLAGS-strtab = -DNOT_IN_libc
> -CPPFLAGS-charmap = -DNOT_IN_libc
> -CPPFLAGS-charmap-dir = -DNOT_IN_libc
> +CPPFLAGS-iconvprogs = -DNOT_IN_libc
> +
> +# Set libof-* for each routine.
> +cpp-srcs-left := $(iconv_prog-modules) $(iconvconfig-modules)
> +lib := iconvprogs
> +include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
>  
>  ifeq ($(run-built-tests),yes)
>  xtests-special += $(objpfx)test-iconvconfig.out
> diff --git a/iconvdata/Makefile b/iconvdata/Makefile
> index b6327d6..e0252ee 100644
> --- a/iconvdata/Makefile
> +++ b/iconvdata/Makefile
> @@ -211,6 +211,7 @@ $(objpfx)iconv-rules: Makefile
>  	$(AWK) 'NR == 1 { \
>  		  for (i = 1; i <= NF; i++) { \
>  		    printf "%s-routines := %s\n", $$i, tolower($$i); \
> +		    printf "libof-%s := iconvdata\n", tolower($$i); \
>  		    printf "%s-map := gconv.map\n", $$i; \
>  		  } \
>  		}; \
> @@ -273,6 +274,11 @@ endif
>  
>  include ../Rules
>  
> +# Set libof-* for each routine.
> +cpp-srcs-left := $(modules) $(generated-modules)
> +lib := iconvdata
> +include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
> +
>  tst-loading-ENV = MALLOC_TRACE=$(objpfx)tst-loading.mtrace
>  $(objpfx)mtrace-tst-loading.out: $(objpfx)tst-loading.out
>  	$(common-objpfx)malloc/mtrace $(objpfx)tst-loading.mtrace > $@; \
> diff --git a/include/libc-modules.h b/include/libc-modules.h
> new file mode 100644
> index 0000000..d12fb90
> --- /dev/null
> +++ b/include/libc-modules.h
> @@ -0,0 +1,37 @@
> +#define MODULE_libc		1
> +#define MODULE_libpthread	2
> +#define MODULE_rtld		3
> +#define MODULE_libdl		4
> +#define MODULE_libm		5
> +#define MODULE_iconvprogs	6
> +#define MODULE_iconvdata	7
> +#define MODULE_lddlibc4		8
> +#define MODULE_locale_programs	9
> +#define MODULE_memusagestat	10
> +#define MODULE_libutil		12
> +#define MODULE_libBrokenLocale	13
> +#define MODULE_libmemusage	15
> +#define MODULE_libresolv	16
> +#define MODULE_libnss_db	17
> +#define MODULE_libnss_files	18
> +#define	MODULE_libnss_dns	19
> +#define MODULE_libnss_compat	20
> +#define MODULE_libnss_hesiod	21
> +#define MODULE_libnss_nis	22
> +#define MODULE_libnss_nisplus	23
> +#define MODULE_libanl		24
> +#define MODULE_librt		25
> +#define MODULE_libSegFault	26
> +#define MODULE_libthread_db	27
> +#define MODULE_libcidn		28
> +#define MODULE_libcrypt		29
> +#define MODULE_libnsl		30
> +#define MODULE_libpcprofile	31
> +#define MODULE_librpcsvc	32
> +#define MODULE_nscd		33
> +#define MODULE_ldconfig 	34
> +#define MODULE_libnldbl 	35
> +
> +/* Catch-all for test modules and other binaries.  */
> +#define MODULE_nonlib		98
> +#define MODULE_extramodules	99
> diff --git a/include/libc-symbols.h b/include/libc-symbols.h
> index d4ab1f3..131d7eb 100644
> --- a/include/libc-symbols.h
> +++ b/include/libc-symbols.h
> @@ -20,6 +20,10 @@
>  #ifndef _LIBC_SYMBOLS_H
>  #define _LIBC_SYMBOLS_H	1
>  
> +#include "libc-modules.h"
> +
> +#define IS_IN(lib) (IN_MODULE == MODULE_##lib)
> +
>  /* This file's macros are included implicitly in the compilation of every
>     file in the C library by -imacros.
>  
> @@ -468,7 +472,7 @@ for linking")
>     If the function should be internal to multiple objects, say ld.so and
>     libc.so, the best way is to use:
>  
> -   #if !defined NOT_IN_libc || defined IS_IN_rtld
> +   #if IS_IN (libc) || IS_IN (rtld)
>     hidden_proto (foo)
>     #endif
>  
> @@ -584,7 +588,7 @@ for linking")
>  # define libc_hidden_data_ver(local, name)
>  #endif
>  
> -#ifdef IS_IN_rtld
> +#if IS_IN (rtld)
>  # define rtld_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
>  # define rtld_hidden_tls_proto(name, attrs...) hidden_tls_proto (name, ##attrs)
>  # define rtld_hidden_def(name) hidden_def (name)
> @@ -604,7 +608,7 @@ for linking")
>  # define rtld_hidden_data_ver(local, name)
>  #endif
>  
> -#ifdef IS_IN_libm
> +#if IS_IN (libm)
>  # define libm_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
>  # define libm_hidden_tls_proto(name, attrs...) hidden_tls_proto (name, ##attrs)
>  # define libm_hidden_def(name) hidden_def (name)
> @@ -624,7 +628,7 @@ for linking")
>  # define libm_hidden_data_ver(local, name)
>  #endif
>  
> -#ifdef IS_IN_libresolv
> +#if IS_IN (libresolv)
>  # define libresolv_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
>  # define libresolv_hidden_tls_proto(name, attrs...) \
>    hidden_tls_proto (name, ##attrs)
> @@ -645,7 +649,7 @@ for linking")
>  # define libresolv_hidden_data_ver(local, name)
>  #endif
>  
> -#ifdef IS_IN_librt
> +#if IS_IN (librt)
>  # define librt_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
>  # define librt_hidden_tls_proto(name, attrs...) \
>    hidden_tls_proto (name, ##attrs)
> @@ -666,7 +670,7 @@ for linking")
>  # define librt_hidden_data_ver(local, name)
>  #endif
>  
> -#ifdef IS_IN_libdl
> +#if IS_IN (libdl)
>  # define libdl_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
>  # define libdl_hidden_tls_proto(name, attrs...) \
>    hidden_tls_proto (name, ##attrs)
> @@ -687,7 +691,7 @@ for linking")
>  # define libdl_hidden_data_ver(local, name)
>  #endif
>  
> -#ifdef IS_IN_libnss_files
> +#if IS_IN (libnss_files)
>  # define libnss_files_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
>  # define libnss_files_hidden_tls_proto(name, attrs...) \
>    hidden_tls_proto (name, ##attrs)
> @@ -708,7 +712,7 @@ for linking")
>  # define libnss_files_hidden_data_ver(local, name)
>  #endif
>  
> -#ifdef IS_IN_libnsl
> +#if IS_IN (libnsl)
>  # define libnsl_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
>  # define libnsl_hidden_tls_proto(name, attrs...) \
>    hidden_tls_proto (name, ##attrs)
> @@ -729,7 +733,7 @@ for linking")
>  # define libnsl_hidden_data_ver(local, name)
>  #endif
>  
> -#ifdef IS_IN_libnss_nisplus
> +#if IS_IN (libnss_nisplus)
>  # define libnss_nisplus_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
>  # define libnss_nisplus_hidden_tls_proto(name, attrs...) \
>    hidden_tls_proto (name, ##attrs)
> @@ -758,7 +762,7 @@ for linking")
>  # define HIDDEN_BUILTIN_JUMPTARGET(name) HIDDEN_JUMPTARGET(name)
>  #endif
>  
> -#ifdef IS_IN_libutil
> +#if IS_IN (libutil)
>  # define libutil_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
>  # define libutil_hidden_tls_proto(name, attrs...) \
>    hidden_tls_proto (name, ##attrs)
> diff --git a/locale/Makefile b/locale/Makefile
> index e4c3878..5cd18e0 100644
> --- a/locale/Makefile
> +++ b/locale/Makefile
> @@ -85,7 +85,7 @@ locale-CPPFLAGS = -DLOCALEDIR='"$(localedir)"' \
>  		  -DLOCALE_ALIAS_PATH='"$(msgcatdir)"' \
>  		  -Iprograms
>  
> -CPPFLAGS-locale-programs = -DLOCALE_PATH='$(localepath)' \
> +CPPFLAGS-locale_programs = -DLOCALE_PATH='$(localepath)' \
>  			   -DCHARMAP_PATH='"$(i18ndir)/charmaps"' \
>  			   -DREPERTOIREMAP_PATH='"$(i18ndir)/repertoiremaps"' \
>  			   -DLOCSRCDIR='"$(i18ndir)/locales"' \
> @@ -96,7 +96,7 @@ CFLAGS-locfile.c = -Wno-write-strings -Wno-char-subscripts
>  CFLAGS-charmap-dir.c = -Wno-write-strings
>  
>  # This makes sure -DNOT_IN_libc et al are passed for all these modules.
> -cpp-srcs-left := $(addsuffix .c,$(localedef-modules) $(localedef-aux) \
> -				$(locale-modules) $(lib-modules))
> -lib := locale-programs
> +cpp-srcs-left := $(localedef-modules) $(localedef-aux) $(locale-modules) \
> +		 $(lib-modules)
> +lib := locale_programs
>  include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
> diff --git a/malloc/Makefile b/malloc/Makefile
> index 9e93523..fbfada2 100644
> --- a/malloc/Makefile
> +++ b/malloc/Makefile
> @@ -89,6 +89,11 @@ endif
>  do-memusagestat: $(objpfx)memusagestat
>  
>  memusagestat-modules = memusagestat
> +
> +cpp-srcs-left := $(memusagestat-modules)
> +lib := memusagestat
> +include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
> +
>  $(objpfx)memusagestat: $(memusagestat-modules:%=$(objpfx)%.o)
>  	$(LINK.o) -o $@ $^ $(libgd-LDFLAGS) -lgd -lpng -lz -lm
>  
> diff --git a/nscd/Makefile b/nscd/Makefile
> index 639d87b..7ab4e9d 100644
> --- a/nscd/Makefile
> +++ b/nscd/Makefile
> @@ -79,23 +79,22 @@ CFLAGS-nscd_gethst_r.c = -fexceptions
>  CFLAGS-nscd_getai.c = -fexceptions
>  CFLAGS-nscd_initgroups.c = -fexceptions
>  
> -CPPFLAGS-nonlib += -DIS_IN_nscd=1 -D_FORTIFY_SOURCE=2
> +CPPFLAGS-nscd += -DIS_IN_nscd=1 -D_FORTIFY_SOURCE=2 -DNOT_IN_libc=1
>  
>  ifeq (yesyes,$(have-fpie)$(build-shared))
> -CFLAGS-nonlib += $(pie-ccflag)
> +CFLAGS-nscd += $(pie-ccflag)
>  endif
>  ifeq (yes,$(have-ssp))
> -CFLAGS-nonlib += -fstack-protector
> +CFLAGS-nscd += -fstack-protector
>  endif
>  
>  ifeq (yesyes,$(have-fpie)$(build-shared))
>  LDFLAGS-nscd = -Wl,-z,now
>  endif
>  
> -# This makes sure CPPFLAGS-nonlib and CFLAGS-nonlib are passed
> -# for all these modules.
> -cpp-srcs-left := $(nscd-modules:=.c)
> -lib := nonlib
> +# Set libof-nscd.
> +cpp-srcs-left := $(nscd-modules)
> +lib := nscd
>  include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
>  
>  $(objpfx)nscd: $(nscd-modules:%=$(objpfx)%.o)
> diff --git a/nss/Makefile b/nss/Makefile
> index 1fa7f1f..7114d74 100644
> --- a/nss/Makefile
> +++ b/nss/Makefile
> @@ -105,7 +105,8 @@ $(objpfx)makedb: $(makedb-modules:%=$(objpfx)%.o)
>  $(inst_vardbdir)/Makefile: db-Makefile $(+force)
>  	$(do-install)
>  
> -CFLAGS-nss_test1.c = -DNOT_IN_libc=1
> +libof-nss_test1 = extramodules
> +CPPFLAGS-nss_test1 = -DNOT_IN_libc=1
>  $(objpfx)/libnss_test1.so: $(objpfx)nss_test1.os $(link-libc-deps)
>  	$(build-module)
>  ifdef libnss_test1.so-version
> diff --git a/stdlib/Makefile b/stdlib/Makefile
> index 9b2271b..da6e076 100644
> --- a/stdlib/Makefile
> +++ b/stdlib/Makefile
> @@ -145,6 +145,7 @@ LDFLAGS-tst-putenv = $(no-as-needed)
>  
>  $(objpfx)tst-putenvmod.so: $(objpfx)tst-putenvmod.os $(link-libc-deps)
>  	$(build-module)
> +libof-tst-putenvmod = extramodules
>  CFLAGS-tst-putenvmod.c = -DNOT_IN_libc=1
>  
>  $(objpfx)bug-getcontext: $(libm)
> diff --git a/sysdeps/gnu/Makefile b/sysdeps/gnu/Makefile
> index c05708d..b5b2cf0 100644
> --- a/sysdeps/gnu/Makefile
> +++ b/sysdeps/gnu/Makefile
> @@ -29,6 +29,8 @@ ifeq ($(subdir),stdio-common)
>  
>  errlist-c = $(firstword $(wildcard $(addsuffix /errlist.c,$(sysdirs) .)))
>  
> +libof-errlist-compat = extramodules
> +
>  ifeq ($(build-shared),yes)
>  $(objpfx)errlist-compat.c: $(errlist-c) $(..)sysdeps/gnu/errlist-compat.awk \
>  			   $(common-objpfx)Versions.v.i $(before-compile)
> diff --git a/sysdeps/s390/s390-64/Makefile b/sysdeps/s390/s390-64/Makefile
> index fe5030e..ce4f0c5 100644
> --- a/sysdeps/s390/s390-64/Makefile
> +++ b/sysdeps/s390/s390-64/Makefile
> @@ -28,6 +28,10 @@ s390x-iconv-modules = ISO-8859-1_CP037_Z900 UTF8_UTF16_Z9 UTF16_UTF32_Z9 UTF8_UT
>  extra-modules-left += $(s390x-iconv-modules)
>  include extra-module.mk
>  
> +cpp-srcs-left := $(foreach mod,$(s390x-iconv-modules),$($(mod)-routines))
> +lib := iconvdata
> +include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
> +
>  extra-objs      += $(addsuffix .so, $(s390x-iconv-modules))
>  install-others  += $(patsubst %, $(inst_gconvdir)/%.so, $(s390x-iconv-modules))
>  
> diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
> index 9ad6d22..2d6d8bb 100644
> --- a/sysdeps/unix/sysv/linux/Makefile
> +++ b/sysdeps/unix/sysv/linux/Makefile
> @@ -178,6 +178,7 @@ ifeq ($(subdir),elf)
>  sysdep-rtld-routines += dl-brk dl-sbrk dl-getcwd dl-openat64 dl-opendir \
>  			dl-fxstatat64
>  
> +libof-lddlibc4 = lddlibc4
>  CPPFLAGS-lddlibc4 += -DNOT_IN_libc
>  
>  others += pldd