Makeconfig

   1 # Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   4 # The GNU C Library is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU Library General Public License as
   6 # published by the Free Software Foundation; either version 2 of the
   7 # License, or (at your option) any later version.
   8
   9 # The GNU C Library is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # Library General Public License for more details.
  13
  14 # You should have received a copy of the GNU Library General Public
  15 # License along with the GNU C Library; see the file COPYING.LIB.  If
  16 # not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 # Cambridge, MA 02139, USA.
  18
  19 #
  20 #       Makefile configuration options for the GNU C library.
  21 #
  22 ifneq (,)
  23 This makefile requires GNU Make.
  24 endif
  25
  26 ifneq "$(origin +included-Makeconfig)" "file"
  27
  28 +included-Makeconfig := yes
  29
  30 ifdef subdir
  31 .. := ../
  32 endif
  33
  34 # If config.make exists, the source directory was configured,
  35 # so don't try to be clever and find another directory to build in.
  36 ifneq (,$(wildcard $(..)config.make))
  37 ARCH =
  38 machine =
  39 else    # Not configured.
  40 ifndef ARCH
  41 ifdef machine
  42 ARCH = $(machine)
  43 endif # machine
  44 endif # ARCH
  45 endif # config.make
  46
  47 # Directory for object files and libc.a.  If this is not defined, the
  48 # object files live in the subdirectories where their sources live, and
  49 # libc.a lives in the parent directory (this probably doesn't work any
  50 # more).
  51 ifdef ARCH
  52 ifeq ($(filter /%,$(ARCH)),)
  53 objdir := $(..)$(ARCH)
  54 else
  55 objdir = $(ARCH)
  56 endif
  57 endif
  58
  59 # $(common-objdir) is the place to put objects and
  60 # such that are not specific to a single subdir.
  61 ifdef objdir
  62 objpfx = $(objdir)/
  63 common-objpfx = $(objpfx)
  64 common-objdir = $(objdir)
  65 else
  66 objpfx :=
  67 ifdef ..
  68 common-objpfx = $(..)
  69 common-objdir = ..
  70 else
  71 # This is a kludge.  make wizards might grok.
  72 common-objpfx = sysdeps/../
  73 common-objdir = .
  74 endif
  75 endif
  76
  77
  78 # Get the values defined by options to `configure'.
  79 include $(common-objpfx)config.make
  80
  81 # Force the user to configure before making.
  82 $(common-objpfx)config.make:
  83         @echo The GNU C library has not been configured. >&2
  84         @echo Run \`configure\' to configure it before building. >&2
  85         @exit 1
  86
  87 # Get the user's configuration parameters.
  88 ifneq ($(wildcard $(..)configparms),)
  89 include $(..)configparms
  90 endif
  91 ifneq ($(objpfx),)
  92 ifneq ($(wildcard $(objpfx)configparms),)
  93 include $(objpfx)configparms
  94 endif
  95 endif
  96
  97 sysdep_dir := $(..)sysdeps
  98 export sysdep_dir := $(sysdep_dir)
  99 \f
 100 ####
 101 ####    These are the configuration variables.  You can define values for
 102 ####    the variables below in the file `configparms'.
 103 ####    Do NOT edit this file.
 104 ####
 105
 106
 107 # Common prefix for machine-independent installation directories.
 108 ifndef prefix
 109 prefix = /usr/local
 110 endif
 111
 112 # Common prefix for machine-dependent installation directories.
 113 ifndef exec_prefix
 114 exec_prefix = $(prefix)
 115 endif
 116
 117 # Where to install the library and object files.
 118 ifndef libdir
 119 libdir = $(exec_prefix)/lib
 120 endif
 121
 122 # Prefix to put on files installed in $(libdir).  For libraries `libNAME.a',
 123 # the prefix is spliced between `lib' and the name, so the linker switch
 124 # `-l$(libprefix)NAME' finds the library; for other files the prefix is
 125 # just prepended to the whole file name.
 126 ifndef libprefix
 127 libprefix =
 128 endif
 129
 130 # Where to install the header files.
 131 ifndef includedir
 132 includedir = $(exec_prefix)/include
 133 endif
 134
 135 # Where to install machine-independent data files.
 136 # These are the timezone database, and eventually the locale database.
 137 ifndef datadir
 138 datadir = $(prefix)/share
 139 endif
 140
 141 # Where to install the timezone data files (which are machine-independent).
 142 ifndef zonedir
 143 zonedir = $(datadir)/zoneinfo
 144 endif
 145
 146 # Where to install programs.
 147 ifndef bindir
 148 bindir = $(exec_prefix)/bin
 149 endif
 150
 151 # Where to install administrative programs.
 152 ifndef sbindir
 153 sbindir = $(exec_prefix)/sbin
 154 endif
 155
 156 # Where to install the Info files.
 157 ifndef infodir
 158 infodir = $(prefix)/info
 159 endif
 160
 161 # Where to install default configuration files.  These include the local
 162 # timezone specification and network data base files.
 163 ifndef sysconfdir
 164 sysconfdir = $(prefix)/etc
 165 endif
 166
 167 # What timezone should be the installed default (e.g., US/Eastern).
 168 # Run `make -C time echo-zonenames' to see a list of available zone names.
 169 # The local timezone can be changed with `zic -l TIMEZONE' at any time.
 170 ifndef localtime
 171 localtime = Factory
 172 endif
 173
 174 # Where to install the "localtime" timezone file; this is the file whose
 175 # contents $(localtime) specifies.  If this is a relative pathname, it is
 176 # relative to $(zonedir).  It is a good idea to put this somewhere
 177 # other than there, so the zoneinfo directory contains only universal data,
 178 # localizing the configuration data elsewhere.
 179 ifndef localtime-file
 180 localtime-file = $(sysconfdir)/localtime
 181 endif
 182
 183 # What timezone's DST rules should be used when a POSIX-style TZ
 184 # environment variable doesn't specify any rules.  For 1003.1 compliance
 185 # this timezone must use rules that are as U.S. federal law defines DST.
 186 # Run `make -C time echo-zonenames' to see a list of available zone names.
 187 # This setting can be changed with `zic -p TIMEZONE' at any time.
 188 # If you want POSIX.1 compatibility, use `America/New_York'.
 189 ifndef posixrules
 190 posixrules = America/New_York
 191 endif
 192
 193 # Where to install the "posixrules" timezone file; this is file
 194 # whose contents $(posixrules) specifies.  If this is a relative
 195 # pathname, it is relative to $(zonedir).
 196 ifndef posixrules-file
 197 posixrules-file = posixrules
 198 endif
 199
 200
 201 # Directory where your system's native header files live.
 202 # This is used on Unix systems to generate some GNU libc header files.
 203 ifndef sysincludedir
 204 sysincludedir = /usr/include
 205 endif
 206
 207
 208 # Commands to install files.
 209 ifndef INSTALL_DATA
 210 INSTALL_DATA = $(INSTALL) -m 644
 211 endif
 212 ifndef INSTALL_PROGRAM
 213 INSTALL_PROGRAM = $(INSTALL)
 214 endif
 215 ifndef INSTALL
 216 INSTALL = install
 217 endif
 218
 219
 220 # The name of the C compiler.
 221 # If you've got GCC, and it works, use it.
 222 ifeq ($(origin CC),default)
 223 CC := gcc
 224 endif
 225
 226 # The name of the C compiler to use for compilations of programs to run on
 227 # the host that is building the library.  If you set CC to a
 228 # cross-compiler, you must set this to the normal compiler.
 229 ifndef BUILD_CC
 230 BUILD_CC = $(CC)
 231 endif
 232
 233 # Default flags to pass the C compiler.
 234 ifndef default_cflags
 235 default_cflags := -g
 236 endif
 237
 238 # Flags to pass the C compiler when assembling preprocessed assembly code
 239 # (`.S' files).  On some systems the assembler doesn't understand the `#' line
 240 # directives the preprocessor produces.  If you have troubling compiling
 241 # assembly code, try using -P here to suppress these directives.
 242 ifndef asm-CPPFLAGS
 243 asm-CPPFLAGS =
 244 endif
 245
 246 # Command for linking programs with the C library.
 247 ifndef +link
 248 +link = $(CC) -nostdlib $(LDFLAGS) -o $@ \
 249         $(addprefix $(csu-objpfx),start.o $(+preinit)) \
 250         $(^:lib=$(common-objpfx)libc.a) $(gnulib) $(common-objpfx)libc.a \
 251         $(addprefix $(csu-objpfx),$(+postinit))
 252 endif
 253 ifndef gnulib
 254 gnulib := -lgcc
 255 endif
 256 ifeq ($(elf),yes)
 257 +preinit = crti.o
 258 +postinit = crtn.o
 259 endif
 260 ifdef objpfx
 261 csu-objpfx = $(objpfx)
 262 else
 263 csu-objpfx = $(..)csu
 264 endif
 265
 266 ifndef LD
 267 LD := ld -X
 268 endif
 269
 270 ifndef  RANLIB
 271 RANLIB = ranlib
 272 endif
 273
 274 # Extra flags to pass to GCC.
 275 +gccwarn := -Wall -Wwrite-strings -Wno-parentheses
 276
 277 # This is the program that generates makefile
 278 # dependencies from C source files.
 279 ifndef +mkdep
 280 +mkdep = $(CC) -M
 281 endif
 282
 283 # The program that makes Emacs-style TAGS files.
 284 ETAGS   := etags -T
 285
 286 # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
 287 # perhaps others) to preprocess assembly code in some cases.
 288 M4 = m4
 289
 290 ####
 291 #### End of configuration variables.
 292 ####
 293 \f
 294 # This tells some versions of GNU make before 3.63 not to export all variables.
 295 .NOEXPORT:
 296
 297 # We want to echo the commands we're running without
 298 # umpteem zillion filenames along with it (we use `...' instead)
 299 # but we don't want this echoing done when the user has said
 300 # he doesn't want to see commands echoed by using -s.
 301 ifneq   "$(findstring s,$(MAKEFLAGS))" ""       # if -s
 302 +cmdecho        := echo >/dev/null
 303 else                                            # not -s
 304 +cmdecho        := echo
 305 endif                                           # -s
 306
 307 # These are the flags given to the compiler to tell
 308 # it what sort of optimization and/or debugging output to do.
 309 ifndef  +cflags
 310 # If `CFLAGS' was defined, use that.
 311 ifdef           CFLAGS
 312 +cflags := $(filter-out -I%,$(CFLAGS))
 313 endif           # CFLAGS
 314 endif   # +cflags
 315
 316 # If none of the above worked, default to "-g".
 317 ifeq    "$(strip $(+cflags))" ""
 318 +cflags := $(default_cflags)
 319 endif   # $(+cflags) == ""
 320
 321 # If using gcc, add flags that only it will grok.
 322 ifneq   "$(findstring gcc,$(CC))" ""
 323 +cflags := $(+cflags) $(+gccwarn)
 324 +gcc-nowarn := -w
 325 else
 326 +gcc-nowarn :=
 327 endif   # gcc
 328
 329 # Don't duplicate options if we inherited variables from the parent.
 330 +cflags := $(sort $(+cflags))
 331
 332
 333 # These are flags given to the C compiler to tell it to look for include
 334 # files (including ones given in angle brackets) in the current directory
 335 # and in the parent library source directory.
 336 # `+sysdep-includes' will be defined by Makerules.
 337 +includes = -I. $(filter-out -I,-I$(patsubst %/,%,$(..))) \
 338             $(includes) $(+sysdep-includes) $(last-includes)
 339
 340
 341 # These are the variables that the implicit compilation rules use.
 342 CPPFLAGS = $(+includes) $(defines) -include $(..)libc-symbols.h \
 343            $(sysdep-CPPFLAGS)
 344 override CFLAGS = $(+cflags) $(sysdep-CFLAGS)
 345
 346
 347 # This is the macro that the implicit linking rules use.
 348 ifneq "$(filter -g,$(+cflags))" "" # -g is in $(+cflags)
 349 LDFLAGS := -g
 350 endif
 351
 352 +gnu-stabs = $(shell echo>&2 '*** BARF ON ME')
 353
 354 ifneq ($(BUILD_CC),$(CC))
 355 cross-compiling := yes
 356 else
 357 cross-compiling := no
 358 endif
 359
 360
 361 endif # Makeconfig not yet included