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 libc.a = $(common-objpfx)libc.a
  78
  79
  80 # Get the values defined by options to `configure'.
  81 include $(common-objpfx)config.make
  82
  83 # Force the user to configure before making.
  84 $(common-objpfx)config.make:
  85         @echo The GNU C library has not been configured. >&2
  86         @echo Run \`configure\' to configure it before building. >&2
  87         @exit 1
  88
  89 # Get the user's configuration parameters.
  90 ifneq ($(wildcard $(..)configparms),)
  91 include $(..)configparms
  92 endif
  93 ifneq ($(objpfx),)
  94 ifneq ($(wildcard $(objpfx)configparms),)
  95 include $(objpfx)configparms
  96 endif
  97 endif
  98
  99 sysdep_dir := $(..)sysdeps
 100 export sysdep_dir := $(sysdep_dir)
 101 \f
 102 ####
 103 ####    These are the configuration variables.  You can define values for
 104 ####    the variables below in the file `configparms'.
 105 ####    Do NOT edit this file.
 106 ####
 107
 108
 109 # Common prefix for machine-independent installation directories.
 110 ifndef prefix
 111 prefix = /usr/local
 112 endif
 113
 114 # Common prefix for machine-dependent installation directories.
 115 ifndef exec_prefix
 116 exec_prefix = $(prefix)
 117 endif
 118
 119 # Where to install the library and object files.
 120 ifndef libdir
 121 libdir = $(exec_prefix)/lib
 122 endif
 123
 124 # Prefix to put on files installed in $(libdir).  For libraries `libNAME.a',
 125 # the prefix is spliced between `lib' and the name, so the linker switch
 126 # `-l$(libprefix)NAME' finds the library; for other files the prefix is
 127 # just prepended to the whole file name.
 128 ifndef libprefix
 129 libprefix =
 130 endif
 131
 132 # Where to install the header files.
 133 ifndef includedir
 134 includedir = $(exec_prefix)/include
 135 endif
 136
 137 # Define if the library should install its own <stddef.h>.
 138 # Do this unless you are using version 2.2 or later of GCC.
 139 ifndef stddef.h
 140 stddef.h = stddef.h
 141 endif
 142
 143 # Where to install machine-independent data files.
 144 # These are the timezone database, and eventually the locale database.
 145 ifndef datadir
 146 datadir = $(prefix)/share
 147 endif
 148
 149 # Where to install the timezone data files (which are machine-independent).
 150 ifndef zonedir
 151 zonedir = $(datadir)/zoneinfo
 152 endif
 153
 154 # Where to install programs.
 155 ifndef bindir
 156 bindir = $(exec_prefix)/bin
 157 endif
 158
 159 # Where to install administrative programs.
 160 ifndef sbindir
 161 sbindir = $(exec_prefix)/sbin
 162 endif
 163
 164 # Where to install the Info files.
 165 ifndef infodir
 166 infodir = $(prefix)/info
 167 endif
 168
 169 # Where to install default configuration files.  These include the local
 170 # timezone specification and network data base files.
 171 ifndef sysconfdir
 172 sysconfdir = $(prefix)/etc
 173 endif
 174
 175 # What timezone should be the installed default (e.g., US/Eastern).
 176 # Run `make -C time echo-zonenames' to see a list of available zone names.
 177 # The local timezone can be changed with `zic -l TIMEZONE' at any time.
 178 ifndef localtime
 179 localtime = Factory
 180 endif
 181
 182 # Where to install the "localtime" timezone file; this is the file whose
 183 # contents $(localtime) specifies.  If this is a relative pathname, it is
 184 # relative to $(zonedir).  It is a good idea to put this somewhere
 185 # other than there, so the zoneinfo directory contains only universal data,
 186 # localizing the configuration data elsewhere.
 187 ifndef localtime-file
 188 localtime-file = $(sysconfdir)/localtime
 189 endif
 190
 191 # What timezone's DST rules should be used when a POSIX-style TZ
 192 # environment variable doesn't specify any rules.  For 1003.1 compliance
 193 # this timezone must use rules that are as U.S. federal law defines DST.
 194 # Run `make -C time echo-zonenames' to see a list of available zone names.
 195 # This setting can be changed with `zic -p TIMEZONE' at any time.
 196 # If you want POSIX.1 compatibility, use `America/New_York'.
 197 ifndef posixrules
 198 posixrules = America/New_York
 199 endif
 200
 201 # Where to install the "posixrules" timezone file; this is file
 202 # whose contents $(posixrules) specifies.  If this is a relative
 203 # pathname, it is relative to $(zonedir).
 204 ifndef posixrules-file
 205 posixrules-file = posixrules
 206 endif
 207
 208
 209 # Directory where your system's native header files live.
 210 # This is used on Unix systems to generate some GNU libc header files.
 211 ifndef sysincludedir
 212 sysincludedir = /usr/include
 213 endif
 214
 215
 216 # Commands to install files.
 217 ifndef INSTALL_DATA
 218 INSTALL_DATA = $(INSTALL) -m 644
 219 endif
 220 ifndef INSTALL_PROGRAM
 221 INSTALL_PROGRAM = $(INSTALL)
 222 endif
 223 ifndef INSTALL
 224 INSTALL = install
 225 endif
 226
 227
 228 # The name of the C compiler.
 229 # If you've got GCC, and it works, use it.
 230 ifeq ($(origin CC),default)
 231 CC := gcc
 232 endif
 233
 234 # The name of the C compiler to use for compilations of programs to run on
 235 # the host that is building the library.  If you set CC to a
 236 # cross-compiler, you must set this to the normal compiler.
 237 ifndef BUILD_CC
 238 BUILD_CC = $(CC)
 239 endif
 240
 241 # Default flags to pass the C compiler.
 242 ifndef default_cflags
 243 default_cflags := -g
 244 endif
 245
 246 # Flags to pass the C compiler when assembling preprocessed assembly code
 247 # (`.S' files).  On some systems the assembler doesn't understand the `#' line
 248 # directives the preprocessor produces.  If you have troubling compiling
 249 # assembly code, try using -P here to suppress these directives.
 250 ifndef asm-CPPFLAGS
 251 asm-CPPFLAGS =
 252 endif
 253
 254 # Command for linking programs with the C library.
 255 ifndef +link
 256 +link = $(CC) -nostdlib $(LDFLAGS) -o $@ \
 257         $(common-objpfx)start.o $(^:lib=$(libc.a)) $(gnulib) $(libc.a)
 258 endif
 259 ifndef gnulib
 260 gnulib := -lgcc
 261 endif
 262
 263 ifndef LD
 264 LD := ld -X
 265 endif
 266
 267 ifndef  RANLIB
 268 RANLIB = ranlib
 269 endif
 270
 271 # Extra flags to pass to GCC.
 272 +gccwarn := -Wall -Wwrite-strings -Wno-parentheses
 273
 274 # This is the program that generates makefile
 275 # dependencies from C source files.
 276 ifndef +mkdep
 277 +mkdep = $(CC) -M
 278 endif
 279
 280 # The program that makes Emacs-style TAGS files.
 281 ETAGS   := etags -T
 282
 283 # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
 284 # perhaps others) to preprocess assembly code in some cases.
 285 M4 = m4
 286
 287 ####
 288 #### End of configuration variables.
 289 ####
 290 \f
 291 # This tells some versions of GNU make before 3.63 not to export all variables.
 292 .NOEXPORT:
 293
 294 # We want to echo the commands we're running without
 295 # umpteem zillion filenames along with it (we use `...' instead)
 296 # but we don't want this echoing done when the user has said
 297 # he doesn't want to see commands echoed by using -s.
 298 ifneq   "$(findstring s,$(MAKEFLAGS))" ""       # if -s
 299 +cmdecho        := echo >/dev/null
 300 else                                            # not -s
 301 +cmdecho        := echo
 302 endif                                           # -s
 303
 304 # These are the flags given to the compiler to tell
 305 # it what sort of optimization and/or debugging output to do.
 306 ifndef  +cflags
 307 # If `CFLAGS' was defined, use that.
 308 ifdef           CFLAGS
 309 +cflags := $(filter-out -I%,$(CFLAGS))
 310 endif           # CFLAGS
 311 endif   # +cflags
 312
 313 # If none of the above worked, default to "-g".
 314 ifeq    "$(strip $(+cflags))" ""
 315 +cflags := $(default_cflags)
 316 endif   # $(+cflags) == ""
 317
 318 # If using gcc, add flags that only it will grok.
 319 ifneq   "$(findstring gcc,$(CC))" ""
 320 +cflags := $(+cflags) $(+gccwarn)
 321 +gcc-nowarn := -w
 322 else
 323 +gcc-nowarn :=
 324 endif   # gcc
 325
 326 # Don't duplicate options if we inherited variables from the parent.
 327 +cflags := $(sort $(+cflags))
 328
 329
 330 # These are flags given to the C compiler to tell it to look for include
 331 # files (including ones given in angle brackets) in the current directory
 332 # and in the parent library source directory.
 333 # `+sysdep-includes' will be defined by Makerules.
 334 +includes = -I. $(filter-out -I,-I$(patsubst %/,%,$(..))) \
 335             $(includes) $(+sysdep-includes) $(last-includes)
 336
 337
 338 # These are the variables that the implicit compilation rules use.
 339 CPPFLAGS = $(+includes) $(defines) -include $(..)libc-symbols.h \
 340            $(sysdep-CPPFLAGS)
 341 override CFLAGS = $(+cflags) $(sysdep-CFLAGS)
 342
 343
 344 # This is the macro that the implicit linking rules use.
 345 ifneq "$(filter -g,$(+cflags))" "" # -g is in $(+cflags)
 346 LDFLAGS := -g
 347 endif
 348
 349 +gnu-stabs = $(shell echo>&2 '*** BARF ON ME')
 350
 351 ifneq ($(BUILD_CC),$(CC))
 352 cross-compiling := yes
 353 else
 354 cross-compiling := no
 355 endif
 356
 357
 358 endif # Makeconfig not yet included