Makefile

   1 # Copyright (C) 1991, 92, 93, 94, 95, 96, 97 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 not,
  16 # write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17 # Boston, MA 02111-1307, USA.
  18
  19 #
  20 #       Master Makefile for the GNU C library
  21 #
  22 ifneq (,)
  23 This makefile requires GNU Make.
  24 endif
  25
  26
  27 # This is the default target; it makes everything except the tests.
  28 .PHONY: all
  29 all: lib others
  30 \f
  31 define autoconf-it
  32 @-rm -f $@.new
  33 autoconf $(ACFLAGS) $< > $@.new
  34 chmod a-w,a+x $@.new
  35 mv -f $@.new $@
  36 test ! -d CVS || cvs commit -m'Regenerated: autoconf $(ACFLAGS) $<' $@
  37 endef
  38
  39 configure: configure.in aclocal.m4; $(autoconf-it)
  40 %/configure: %/configure.in aclocal.m4; $(autoconf-it)
  41 config.status: configure version.h; $(SHELL) ./config.status --recheck
  42
  43 include Makeconfig
  44
  45 ifndef avoid-generated
  46 -include $(objpfx)sysd-dirs
  47 define \n
  48
  49
  50 endef
  51 sysdep-subdirs := $(subst $(\n), ,$(sysdep-subdirs))
  52 endif
  53
  54 # These are the subdirectories containing the library source.
  55 subdirs = csu assert ctype db locale intl catgets math setjmp signal stdlib \
  56           stdio-common $(stdio) $(malloc) string wcsmbs time dirent grp pwd \
  57           posix io termios resource misc login socket sysvipc gmon gnulib \
  58           wctype manual shadow md5-crypt nss $(sysdep-subdirs) po \
  59           $(add-ons) elf
  60 export subdirs := $(subdirs)    # Benign, useless in GNU make before 3.63.
  61
  62 # The mach and hurd subdirectories have many generated header files which
  63 # much of the rest of the library depends on, so it is best to build them
  64 # first (and mach before hurd, at that).  The before-compile additions in
  65 # sysdeps/{mach,hurd}/Makefile should make it reliably work for these files
  66 # not to exist when making in other directories, but it will be slower that
  67 # way with more somewhat expensive `make' invocations.
  68 subdirs := $(filter mach,$(subdirs)) $(filter hurd,$(subdirs)) \
  69            $(filter-out mach hurd,$(subdirs))
  70
  71 # All initialization source files.
  72 +subdir_inits   := $(wildcard $(foreach dir,$(subdirs),$(dir)/init-$(dir).c))
  73 # All subdirectories containing initialization source files.
  74 +init_subdirs   := $(patsubst %/,%,$(dir $(+subdir_inits)))
  75
  76
  77 # These are the targets that are made by making them in each subdirectory.
  78 +subdir_targets := subdir_lib objects objs others subdir_mostlyclean    \
  79                    subdir_clean subdir_distclean subdir_realclean       \
  80                    tests subdir_lint.out                                \
  81                    subdir_distinfo                                      \
  82                    subdir_echo-headers subdir_echo-distinfo             \
  83                    subdir_install                                       \
  84                    $(addprefix install-, no-libc.a bin lib data headers others)
  85 \f
  86 headers := errno.h sys/errno.h errnos.h limits.h values.h       \
  87            features.h gnu-versions.h libc-lock.h xopen_lim.h
  88 aux      = sysdep $(libc-init) version
  89 before-compile = $(objpfx)version-info.h
  90
  91 echo-headers: subdir_echo-headers
  92
  93 # What to install.
  94 install-others = $(includedir)/gnu/stubs.h
  95 ifeq (yes,$(build-shared))
  96 install-others += $(includedir)/gnu/lib-names.h
  97 endif
  98 install-bin = glibcbug
  99
 100 ifeq (yes,$(gnu-ld))
 101 libc-init = set-init
 102 else
 103 libc-init = munch-init
 104 $(objpfx)munch-init.c: munch.awk munch-tmpl.c $(+subdir_inits)
 105         awk -f $< subdirs='$(+init_subdirs)' $(word 2,$^) > $@-t
 106         mv -f $@-t $@
 107 generated := $(generated) munch-init.c
 108 endif
 109
 110
 111 include Makerules
 112
 113 # Install from subdirectories too.
 114 install: subdir_install
 115
 116 # Build subdirectory lib objects.
 117 lib-noranlib: subdir_lib
 118
 119 ifeq (yes,$(build-shared))
 120 # Build the shared object from the PIC object library.
 121 lib: $(common-objpfx)libc.so
 122 endif
 123
 124 all-Subdirs-files = $(wildcard $(addsuffix /Subdirs, $(config-sysdirs)))
 125 $(objpfx)sysd-dirs: $(+sysdir_pfx)config.make $(all-Subdirs-files)
 126         (echo define sysdep-subdirs;                            \
 127          sed 's/#.*$$//' $(all-Subdirs-files) /dev/null;        \
 128          echo endef) > $@-tmp
 129         mv -f $@-tmp $@
 130 \f
 131 all-Banner-files = $(wildcard $(addsuffix /Banner, $(subdirs)))
 132 $(objpfx)version-info.h: $(+sysdir_pfx)config.make $(all-Banner-files)
 133         (case $(config-os) in \
 134            linux*) version=`(echo -e "#include <linux/version.h>\nUTS_RELEASE"\
 135                              | $(CC)  -E -P - | \
 136                              sed -e 's/"\([^"]*\)".*/\1/p' -e d) 2>/dev/null`;\
 137                    if [ -z "$$version" ]; then \
 138                      if [ -r /proc/version ]; then \
 139                        version=`sed 's/.*version \([^ ]*\) .*/>>\1<</' \
 140                                 < /proc/version`; \
 141                      else \
 142                        version=`uname -r`; \
 143                      fi; \
 144                    fi; \
 145                    echo -n "\"Compiled on a Linux $$version system "; \
 146                    echo "on `date +%Y/%m/%d`.\\n\"" ;; \
 147            *) ;; \
 148          esac; \
 149          files="$(all-Banner-files)";                           \
 150          if test -n "$$files"; then                             \
 151            echo "\"Available extensions:";                      \
 152            sed -e '/^#/d' -e 's/^[[:space:]]*/  /' $$files;     \
 153            echo "\"";                                           \
 154          fi) > $@T
 155         mv -f $@T $@
 156 generated += version-info.h
 157
 158 version.c-objects := $(addprefix $(objpfx)version,$(object-suffixes))
 159 $(version.c-objects): $(objpfx)version-info.h
 160 \f
 161 # Makerules creates a file `stub-$(subdir)' for each subdirectory, which
 162 # contains `#define __stub_FUNCTION' for each function which is a stub.
 163 # Here we paste all of these together into <gnu/stubs.h>.
 164
 165 subdir-stubs := $(foreach dir,$(subdirs),$(common-objpfx)stub-$(dir))
 166
 167 # Since stubs.h is never needed when building the library, we simplify the
 168 # hairy installation process by producing it in place only as the last part
 169 # of the top-level `make install'.  It depends on subdir_install, which
 170 # iterates over all the subdirs; subdir_install in each subdir depends on
 171 # the subdir's stubs file.  Having more direct dependencies would result in
 172 # extra iterations over the list for subdirs and many recursive makes.
 173 $(includedir)/gnu/stubs.h: subdir_install
 174         @rm -f $(objpfx)stubs.h
 175         (echo '/* This file is automatically generated.';\
 176          echo '   It defines a symbol `__stub_FUNCTION'\'' for each function';\
 177          echo '   in the C library which is a stub, meaning it will fail';\
 178          echo '   every time called, usually setting errno to ENOSYS.  */';\
 179          sort $(subdir-stubs)) > $(objpfx)stubs.h
 180         if test -r $@ && cmp -s $(objpfx)stubs.h $@; \
 181         then echo 'stubs.h unchanged'; \
 182         else $(INSTALL_DATA) $(objpfx)stubs.h $@; fi
 183         rm -f $(objpfx)stubs.h
 184 \f
 185 ifeq (yes,$(build-shared))
 186
 187 # Like gnu/stubs.h the gnu/lib-names.h header is not used while building the
 188 # libc itself.  So we generate it while installing.
 189 $(includedir)/gnu/lib-names.h: $(common-objpfx)soversions.mk
 190         @rm -f $(objpfx)lib-names.h
 191         (echo '/* This file is automatically generated.';\
 192          echo '   It defines macros to allow user program to find the shared';\
 193          echo '   library files which come as part of GNU libc.  */';\
 194          echo '#ifndef __GNU_LIB_NAMES_H'; \
 195          echo '#define __GNU_LIB_NAMES_H        1'; \
 196          echo; \
 197          (libs='$(all-sonames)';\
 198           for l in $$libs; do \
 199             upname=`echo $$l | sed 's/[.]so.*//' | \
 200                     tr '[:lower:]-' '[:upper:]_'`; \
 201             echo "#define       $${upname}_SO   $$l"; \
 202           done;) | sort; \
 203          echo; \
 204          echo '#endif   /* gnu/lib-names.h */';) > $(objpfx)lib-names.h
 205         if test -r $@ && cmp -s $(objpfx)lib-names.h $@; \
 206         then echo 'gnu/lib-names.h unchanged'; \
 207         else $(INSTALL_DATA) $(objpfx)lib-names.h $@; fi
 208         rm -f $(objpfx)lib-names.h
 209 endif
 210 \f
 211 # The `glibcbug' script contains the version number and it shall be rebuild
 212 # whenever this changes or the `glibcbug.in' file.
 213 glibcbug: glibcbug.in config.status
 214         CONFIG_FILES=$@ CONFIG_HEADERS= $(SHELL) ./config.status
 215 \f
 216 # This makes the Info or DVI file of the documentation from the Texinfo source.
 217 .PHONY: info dvi
 218 info dvi:
 219         $(MAKE) -C manual $@
 220 \f
 221 # This makes all the subdirectory targets.
 222
 223 # For each target, make it depend on DIR/target for each subdirectory DIR.
 224 $(+subdir_targets): %: $(addsuffix /%,$(subdirs))
 225
 226 # Compute a list of all those targets.
 227 all-subdirs-targets := $(foreach dir,$(subdirs),\
 228                                  $(addprefix $(dir)/,$(+subdir_targets)))
 229
 230 # The action for each of those is to cd into the directory and make the
 231 # target there.
 232 $(all-subdirs-targets):
 233         $(MAKE) -C $(@D) $(@F)
 234
 235 .PHONY: $(+subdir_targets) $(all-subdirs-targets)
 236 \f
 237 # Targets to clean things up to various degrees.
 238
 239 .PHONY: clean realclean distclean distclean-1 parent-clean parent-mostlyclean
 240
 241 # Subroutines of all cleaning targets.
 242 parent-mostlyclean: common-mostlyclean # common-mostlyclean is in Makerules.
 243         -rm -f $(foreach o,$(object-suffixes),\
 244                    $(common-objpfx)$(patsubst %,$(libtype$o),c)) \
 245                $(addprefix $(objpfx),$(install-lib))
 246 parent-clean: parent-mostlyclean common-clean
 247         -rm -f $(addprefix $(common-objpfx),$(common-generated))
 248         -rm -f $(addprefix $(objpfx),sysd-Makefile sysd-dirs sysd-rules)
 249
 250 clean: parent-clean
 251 # This is done this way rather than having `subdir_clean' be a
 252 # dependency of this target so that libc.a will be removed before the
 253 # subdirectories are dealt with and so they won't try to remove object
 254 # files from it when it's going to be removed anyway.
 255         @$(MAKE) subdir_clean no_deps=t
 256 mostlyclean: parent-mostlyclean
 257         @$(MAKE) subdir_mostlyclean no_deps=t
 258
 259 # The realclean target is just like distclean for the parent, but we want
 260 # the subdirs to know the difference in case they care.
 261 realclean distclean: parent-clean
 262 # This is done this way rather than having `subdir_distclean' be a
 263 # dependency of this target so that libc.a will be removed before the
 264 # subdirectories are dealt with and so they won't try to remove object
 265 # files from it when it's going to be removed anyway.
 266         @$(MAKE) distclean-1 no_deps=t distclean-1=$@ avoid-generated=yes
 267
 268 # Subroutine of distclean and realclean.
 269 distclean-1: subdir_$(distclean-1)
 270         -rm -f $(config-generated)
 271         -rm -f $(addprefix $(objpfx),config.status config.cache config.log)
 272         -rm -f $(addprefix $(objpfx),config.make config-name.h config.h)
 273 ifdef objdir
 274         -rm -f $(objpfx)Makefile
 275 endif
 276         -rm -f $(sysdep-$(distclean-1))
 277 \f
 278 .PHONY: echo_subdirs
 279 echo_subdirs:;@echo '$(subdirs)'
 280
 281 .PHONY: echo-distinfo parent_echo-distinfo
 282 echo-distinfo: parent_echo-distinfo subdir_echo-distinfo
 283 parent_echo-distinfo:
 284         @echo $(addprefix +header+,$(headers)) \
 285               $(addprefix +nodist+,$(generated))
 286
 287 \f
 288 # Make the distribution tarfile.
 289
 290 distribute  := README INSTALL FAQ NOTES NEWS PROJECTS                   \
 291                COPYING.LIB COPYING ChangeLog ChangeLog.[0-9]            \
 292                Makefile Makeconfig Makerules Rules Make-dist MakeTAGS   \
 293                extra-lib.mk o-iterator.mk                               \
 294                ansidecl.h mkinstalldirs move-if-change install-sh       \
 295                configure configure.in aclocal.m4 config.sub config.guess\
 296                config.h.in config.make.in config-name.in Makefile.in    \
 297                autolock.sh rellns-sh munch-tmpl.c munch.awk interp.c    \
 298                sysdep.h set-hooks.h libc-symbols.h version.h shlib-versions \
 299                rpm/Makefile rpm/template rpm/rpmrc nsswitch.h netgroup.h
 300
 301 distribute := $(strip $(distribute))
 302 generated := $(generated) stubs.h version-info.h
 303
 304 README: README.template version.c ; # Make-dist should update README.
 305
 306 define format-me
 307 @rm -f $@
 308 makeinfo --no-validate --no-warn --no-headers $< -o $@
 309 -chmod a-w $@
 310 endef
 311 INSTALL: manual/maint.texi; $(format-me)
 312 NOTES: manual/creature.texi; $(format-me)
 313
 314 rpm/%: subdir_distinfo
 315         $(MAKE) -C $(@D) subdirs='$(subdirs)' $(@F)