Makefile

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