Makefile

   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 #       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; $(autoconf-it)
  40 %/configure: %/configure.in; $(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 locale math setjmp signal stdio stdlib      \
  55            malloc string time dirent grp pwd posix io termios resource  \
  56            socket misc gnulib $(wildcard crypt) manual                  \
  57            $(sysdep-subdirs) elf
  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 # the much of 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_echo-headers subdir_echo-distinfo             \
  80                    subdir_install $(addprefix install-,                 \
  81                                               no-libc.a bin lib         \
  82                                               data headers others)
  83 \f
  84 headers := errno.h sys/errno.h errnos.h limits.h values.h       \
  85            features.h gnu-versions.h
  86 aux      = sysdep $(libc-init) version
  87
  88 echo-headers: subdir_echo-headers
  89
  90 # What to install.
  91 install-others = $(includedir)/stubs.h
  92
  93 ifeq (yes,$(gnu-ld))
  94 libc-init = set-init
  95 else
  96 libc-init = munch-init
  97 $(objpfx)munch-init.c: munch.awk munch-tmpl.c $(+subdir_inits)
  98         awk -f $< subdirs='$(+init_subdirs)' $(word 2,$^) > $@-t
  99         mv -f $@-t $@
 100 generated := $(generated) munch-init.c
 101 endif
 102
 103
 104 include Makerules
 105
 106 # Install from subdirectories too.
 107 install: subdir_install
 108
 109 # Build subdirectory lib objects.
 110 lib-noranlib: subdir_lib
 111
 112 ifeq (yes,$(build-shared))
 113 # Build the shared object from the PIC object library.
 114 lib: $(common-objpfx)libc.so
 115 endif
 116
 117 $(objpfx)sysd-dirs: $(+sysdir_pfx)config.make
 118         (echo define sysdep-subdirs;                                          \
 119          for dir in $(sysdirs); do                                            \
 120            if [ -r $(sysdep_dir)/$$dir/Subdirs ]; then                        \
 121              sed 's/#.*$$//' $(sysdep_dir)/$$dir/Subdirs;                     \
 122            else true;                                                         \
 123            fi;                                                                \
 124          done;                                                                \
 125          echo endef) > $@-tmp
 126          mv -f $@-tmp $@
 127 \f
 128 # Makerules creates a file `stub-$(subdir)' for each subdirectory, which
 129 # contains `#define __stub_FUNCTION' for each function which is a stub.
 130 # Here we paste all of these together into <stubs.h>.
 131
 132 subdir-stubs := $(foreach dir,$(subdirs),$(common-objpfx)stub-$(dir))
 133
 134 # Since stubs.h is never needed when building the library, we simplify the
 135 # hairy installation process by producing it in place only as the last part
 136 # of the top-level `make install'.  It depends on subdir_install, which
 137 # iterates over all the subdirs; subdir_install in each subdir depends on
 138 # the subdir's stubs file.  Having more direct dependencies would result in
 139 # extra iterations over the list for subdirs and many recursive makes.
 140 $(includedir)/stubs.h: subdir_install
 141         @rm -f $(objpfx)stubs.h
 142         (echo '/* This file is automatically generated.';\
 143          echo '   It defines a symbol `__stub_FUNCTION'\'' for each function';\
 144          echo '   in the C library which is a stub, meaning it will fail';\
 145          echo '   every time called, usually setting errno to ENOSYS.  */';\
 146          sort $(subdir-stubs)) > $(objpfx)stubs.h
 147         $(INSTALL_DATA) $(objpfx)stubs.h $@
 148         rm -f $(objpfx)stubs.h
 149 \f
 150 # This makes the Info or DVI file of the documentation from the Texinfo source.
 151 .PHONY: info dvi
 152 info dvi:
 153         $(MAKE) -C manual $@
 154 \f
 155 # This makes all the subdirectory targets.
 156
 157 # For each target, make it depend on DIR/target for each subdirectory DIR.
 158 $(+subdir_targets): %: $(addsuffix /%,$(subdirs))
 159
 160 # Compute a list of all those targets.
 161 all-subdirs-targets := $(foreach dir,$(subdirs),\
 162                                  $(addprefix $(dir)/,$(+subdir_targets)))
 163
 164 # The action for each of those is to cd into the directory and make the
 165 # target there.
 166 $(all-subdirs-targets):
 167         $(MAKE) -C $(@D) $(@F)
 168
 169 .PHONY: $(+subdir_targets) $(all-subdirs-targets)
 170 \f
 171 # Targets to clean things up to various degrees.
 172
 173 .PHONY: clean realclean distclean distclean-1 parent-clean parent-mostlyclean
 174
 175 # Subroutines of all cleaning targets.
 176 parent-mostlyclean: common-mostlyclean # common-mostlyclean is in Makerules.
 177         -rm -f $(common-objpfx)libc.a $(addprefix $(objpfx),$(install-lib))
 178 parent-clean: parent-mostlyclean common-clean
 179         -rm -f $(addprefix $(common-objpfx),$(common-generated))
 180         -rm -f $(addprefix $(objpfx),sysd-Makefile sysd-dirs sysd-rules)
 181
 182 clean: parent-clean
 183 # This is done this way rather than having `subdir_clean' be a
 184 # dependency of this target so that libc.a will be removed before the
 185 # subdirectories are dealt with and so they won't try to remove object
 186 # files from it when it's going to be removed anyway.
 187         @$(MAKE) subdir_clean no_deps=t
 188 mostlyclean: parent-mostlyclean
 189         @$(MAKE) subdir_mostlyclean no_deps=t
 190
 191 # The realclean target is just like distclean for the parent, but we want
 192 # the subdirs to know the difference in case they care.
 193 realclean distclean: parent-clean
 194 # This is done this way rather than having `subdir_distclean' be a
 195 # dependency of this target so that libc.a will be removed before the
 196 # subdirectories are dealt with and so they won't try to remove object
 197 # files from it when it's going to be removed anyway.
 198         @$(MAKE) distclean-1 no_deps=t distclean-1=$@ avoid-generated=yes
 199
 200 # Subroutine of distclean and realclean.
 201 distclean-1: subdir_$(distclean-1)
 202         -rm -f $(config-generated)
 203         -rm -f $(addprefix $(objpfx),config.status cache.cache)
 204         -rm -f $(addprefix $(objpfx),config.make config-name.h)
 205 ifdef objdir
 206         -rm -f $(objpfx)Makefile
 207 endif
 208         -rm -f $(sysdep-$(distclean-1))
 209 \f
 210 .PHONY: echo_subdirs
 211 echo_subdirs:;@echo '$(subdirs)'
 212
 213 .PHONY: echo-distinfo parent_echo-distinfo
 214 echo-distinfo: parent_echo-distinfo subdir_echo-distinfo
 215 parent_echo-distinfo:
 216         @echo $(addprefix +header+,$(headers)) \
 217               $(addprefix +nodist+,$(generated))
 218 \f
 219 # Make the distribution tarfile.
 220
 221 distribute  := README INSTALL NOTES COPYING.LIB COPYING NEWS            \
 222                ChangeLog ChangeLog.[0-9]                                \
 223                Makefile Makeconfig Makerules Rules Make-dist MakeTAGS   \
 224                extra-lib.mk o-iterator.mk                               \
 225                ansidecl.h mkinstalldirs move-if-change install-sh       \
 226                configure configure.in aclocal.m4 config.sub config.guess\
 227                config.make.in config-name.in Makefile.in                \
 228                munch-tmpl.c munch.awk sysdep.h set-hooks.h libc-symbols.h
 229
 230 distribute := $(strip $(distribute))
 231 generated := $(generated) stubs.h
 232
 233 README: README.template version.c ; # Make-dist should update README.
 234
 235 define format-me
 236 @rm -f $@
 237 makeinfo --no-validate --no-warn --no-headers $< -o $@
 238 -chmod a-w $@
 239 endef
 240 INSTALL: manual/maint.texi; $(format-me)
 241 NOTES: manual/creature.texi; $(format-me)