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
  16 # not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 # Cambridge, MA 02139, 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 $(sysdep-subdirs) nss elf po
  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 $(addprefix install-,                 \
  82                                               no-libc.a bin lib         \
  83                                               data headers others)
  84 \f
  85 headers := errno.h sys/errno.h errnos.h limits.h values.h       \
  86            features.h gnu-versions.h libc-lock.h
  87 aux      = sysdep $(libc-init) version
  88
  89 echo-headers: subdir_echo-headers
  90
  91 # What to install.
  92 install-others = $(includedir)/stubs.h
  93
  94 ifeq (yes,$(gnu-ld))
  95 libc-init = set-init
  96 else
  97 libc-init = munch-init
  98 $(objpfx)munch-init.c: munch.awk munch-tmpl.c $(+subdir_inits)
  99         awk -f $< subdirs='$(+init_subdirs)' $(word 2,$^) > $@-t
 100         mv -f $@-t $@
 101 generated := $(generated) munch-init.c
 102 endif
 103
 104
 105 include Makerules
 106
 107 # Install from subdirectories too.
 108 install: subdir_install
 109
 110 # Build subdirectory lib objects.
 111 lib-noranlib: subdir_lib
 112
 113 ifeq (yes,$(build-shared))
 114 # Build the shared object from the PIC object library.
 115 lib: $(common-objpfx)libc.so
 116 endif
 117
 118 $(objpfx)sysd-dirs: $(+sysdir_pfx)config.make
 119         (echo define sysdep-subdirs;                                          \
 120          for dir in $(sysdirs); do                                            \
 121            if [ -r $(sysdep_dir)/$$dir/Subdirs ]; then                        \
 122              sed 's/#.*$$//' $(sysdep_dir)/$$dir/Subdirs;                     \
 123            else true;                                                         \
 124            fi;                                                                \
 125          done;                                                                \
 126          echo endef) > $@-tmp
 127          mv -f $@-tmp $@
 128 \f
 129 # Makerules creates a file `stub-$(subdir)' for each subdirectory, which
 130 # contains `#define __stub_FUNCTION' for each function which is a stub.
 131 # Here we paste all of these together into <stubs.h>.
 132
 133 subdir-stubs := $(foreach dir,$(subdirs),$(common-objpfx)stub-$(dir))
 134
 135 # Since stubs.h is never needed when building the library, we simplify the
 136 # hairy installation process by producing it in place only as the last part
 137 # of the top-level `make install'.  It depends on subdir_install, which
 138 # iterates over all the subdirs; subdir_install in each subdir depends on
 139 # the subdir's stubs file.  Having more direct dependencies would result in
 140 # extra iterations over the list for subdirs and many recursive makes.
 141 $(includedir)/stubs.h: subdir_install
 142         @rm -f $(objpfx)stubs.h
 143         (echo '/* This file is automatically generated.';\
 144          echo '   It defines a symbol `__stub_FUNCTION'\'' for each function';\
 145          echo '   in the C library which is a stub, meaning it will fail';\
 146          echo '   every time called, usually setting errno to ENOSYS.  */';\
 147          sort $(subdir-stubs)) > $(objpfx)stubs.h
 148         if test -r $@ && cmp -s $(objpfx)stubs.h $@; \
 149         then echo stubs.h unchanged ; \
 150         else $(INSTALL_DATA) $(objpfx)stubs.h $@; fi
 151         rm -f $(objpfx)stubs.h
 152 \f
 153 # This makes the Info or DVI file of the documentation from the Texinfo source.
 154 .PHONY: info dvi
 155 info dvi:
 156         $(MAKE) -C manual $@
 157 \f
 158 # This makes all the subdirectory targets.
 159
 160 # For each target, make it depend on DIR/target for each subdirectory DIR.
 161 $(+subdir_targets): %: $(addsuffix /%,$(subdirs))
 162
 163 # Compute a list of all those targets.
 164 all-subdirs-targets := $(foreach dir,$(subdirs),\
 165                                  $(addprefix $(dir)/,$(+subdir_targets)))
 166
 167 # The action for each of those is to cd into the directory and make the
 168 # target there.
 169 $(all-subdirs-targets):
 170         $(MAKE) -C $(@D) $(@F)
 171
 172 .PHONY: $(+subdir_targets) $(all-subdirs-targets)
 173 \f
 174 # Targets to clean things up to various degrees.
 175
 176 .PHONY: clean realclean distclean distclean-1 parent-clean parent-mostlyclean
 177
 178 # Subroutines of all cleaning targets.
 179 parent-mostlyclean: common-mostlyclean # common-mostlyclean is in Makerules.
 180         -rm -f $(foreach o,$(object-suffixes),\
 181                    $(common-objpfx)$(patsubst %,$(libtype$o),c)) \
 182                $(addprefix $(objpfx),$(install-lib))
 183 parent-clean: parent-mostlyclean common-clean
 184         -rm -f $(addprefix $(common-objpfx),$(common-generated))
 185         -rm -f $(addprefix $(objpfx),sysd-Makefile sysd-dirs sysd-rules)
 186
 187 clean: parent-clean
 188 # This is done this way rather than having `subdir_clean' be a
 189 # dependency of this target so that libc.a will be removed before the
 190 # subdirectories are dealt with and so they won't try to remove object
 191 # files from it when it's going to be removed anyway.
 192         @$(MAKE) subdir_clean no_deps=t
 193 mostlyclean: parent-mostlyclean
 194         @$(MAKE) subdir_mostlyclean no_deps=t
 195
 196 # The realclean target is just like distclean for the parent, but we want
 197 # the subdirs to know the difference in case they care.
 198 realclean distclean: parent-clean
 199 # This is done this way rather than having `subdir_distclean' be a
 200 # dependency of this target so that libc.a will be removed before the
 201 # subdirectories are dealt with and so they won't try to remove object
 202 # files from it when it's going to be removed anyway.
 203         @$(MAKE) distclean-1 no_deps=t distclean-1=$@ avoid-generated=yes
 204
 205 # Subroutine of distclean and realclean.
 206 distclean-1: subdir_$(distclean-1)
 207         -rm -f $(config-generated)
 208         -rm -f $(addprefix $(objpfx),config.status config.cache config.log)
 209         -rm -f $(addprefix $(objpfx),config.make config-name.h config.h)
 210 ifdef objdir
 211         -rm -f $(objpfx)Makefile
 212 endif
 213         -rm -f $(sysdep-$(distclean-1))
 214 \f
 215 .PHONY: echo_subdirs
 216 echo_subdirs:;@echo '$(subdirs)'
 217
 218 .PHONY: echo-distinfo parent_echo-distinfo
 219 echo-distinfo: parent_echo-distinfo subdir_echo-distinfo
 220 parent_echo-distinfo:
 221         @echo $(addprefix +header+,$(headers)) \
 222               $(addprefix +nodist+,$(generated))
 223
 224 \f
 225 # Make the distribution tarfile.
 226
 227 distribute  := README INSTALL FAQ NOTES NEWS PROJECTS                   \
 228                COPYING.LIB COPYING ChangeLog ChangeLog.[0-9]            \
 229                Makefile Makeconfig Makerules Rules Make-dist MakeTAGS   \
 230                extra-lib.mk o-iterator.mk                               \
 231                ansidecl.h mkinstalldirs move-if-change install-sh       \
 232                configure configure.in aclocal.m4 config.sub config.guess\
 233                config.h.in config.make.in config-name.in Makefile.in    \
 234                munch-tmpl.c munch.awk \
 235                sysdep.h set-hooks.h libc-symbols.h version.h shlib-versions \
 236                rpm/Makefile rpm/template rpm/rpmrc
 237
 238 distribute := $(strip $(distribute))
 239 generated := $(generated) stubs.h
 240
 241 README: README.template version.c ; # Make-dist should update README.
 242
 243 define format-me
 244 @rm -f $@
 245 makeinfo --no-validate --no-warn --no-headers $< -o $@
 246 -chmod a-w $@
 247 endef
 248 INSTALL: manual/maint.texi; $(format-me)
 249 NOTES: manual/creature.texi; $(format-me)
 250
 251 rpm/%: subdir_distinfo
 252         $(MAKE) -C $(@D) subdirs='$(subdirs)' $(@F)