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