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 autoconf $(ACFLAGS) $< > $@.new
  33 mv -f $@.new $@
  34 test -d CVS && cvs commit -m'Regenerated: autoconf $(ACFLAGS) $<' $@
  35 endef
  36
  37 configure: configure.in; $(autoconf-it)
  38 %/configure: %/configure.in; $(autoconf-it)
  39
  40 include Makeconfig
  41
  42 ifndef avoid-generated
  43 include $(objpfx)sysd-dirs
  44 define \n
  45
  46
  47 endef
  48 sysdep-subdirs := $(subst $(\n), ,$(sysdep-subdirs))
  49 endif
  50
  51 # These are the subdirectories containing the library source.
  52 subdirs := elf csu assert ctype locale math setjmp signal stdio stdlib  \
  53            malloc string time dirent grp pwd posix io termios resource  \
  54            socket misc gnulib $(wildcard crypt) manual                  \
  55            $(sysdep-subdirs)
  56 export subdirs := $(subdirs)    # Benign, useless in GNU make before 3.63.
  57
  58 # The mach and hurd subdirectories have many generated header files which
  59 # the much of rest of the library depends on, so it is best to build them
  60 # first (and mach before hurd, at that).  The before-compile additions in
  61 # sysdeps/{mach,hurd}/Makefile should make it reliably work for these files
  62 # not to exist when making in other directories, but it will be slower that
  63 # way with more somewhat expensive `make' invocations.
  64 subdirs := $(filter mach,$(subdirs)) $(filter hurd,$(subdirs)) \
  65            $(filter-out mach hurd,$(subdirs))
  66
  67 # All initialization source files.
  68 +subdir_inits   := $(wildcard $(foreach dir,$(subdirs),$(dir)/init-$(dir).c))
  69 # All subdirectories containing initialization source files.
  70 +init_subdirs   := $(patsubst %/,%,$(dir $(+subdir_inits)))
  71
  72
  73 # These are the targets that are made by making them in each subdirectory.
  74 +subdir_targets := subdir_lib objects objs others subdir_mostlyclean    \
  75                    subdir_clean subdir_distclean subdir_realclean       \
  76                    tests subdir_lint.out                                \
  77                    subdir_echo-headers subdir_echo-distinfo             \
  78                    subdir_install $(addprefix install-,                 \
  79                                               no-libc.a bin lib         \
  80                                               data headers others)
  81 \f
  82 headers := features.h errno.h sys/errno.h errnos.h limits.h
  83 aux      = sysdep $(libc-init) version
  84
  85 echo-headers: subdir_echo-headers
  86
  87 # What to install.
  88 install-others = $(includedir)/stubs.h
  89
  90 ifeq (yes,$(gnu-ld))
  91 libc-init = set-init
  92 else
  93 libc-init = munch-init
  94 $(objpfx)munch-init.c: munch.awk munch-tmpl.c $(+subdir_inits)
  95         awk -f $< subdirs='$(+init_subdirs)' $(word 2,$^) > $@-t
  96         mv -f $@-t $@
  97 generated := $(generated) munch-init.c
  98 endif
  99
 100
 101 include Makerules
 102
 103 # Install from subdirectories too.
 104 install: subdir_install
 105
 106 lib-noranlib $(libc.a)(__.SYMDEF): subdir_lib
 107
 108
 109 $(objpfx)sysd-dirs: $(+sysdir_pfx)config.make
 110         (echo define sysdep-subdirs;                                          \
 111          for dir in $(sysdirs); do                                            \
 112            if [ -r $(sysdep_dir)/$$dir/Subdirs ]; then                        \
 113              sed 's/#.*$$//' $(sysdep_dir)/$$dir/Subdirs;                     \
 114            else true;                                                         \
 115            fi;                                                                \
 116          done;                                                                \
 117          echo endef) > $@-tmp
 118          mv -f $@-tmp $@
 119 \f
 120 # Makerules creates a file `stub-$(subdir)' for each subdirectory, which
 121 # contains `#define __stub_FUNCTION' for each function which is a stub.
 122 # Here we paste all of these together into <stubs.h>.
 123
 124 subdir-stubs := $(foreach dir,$(subdirs),$(common-objpfx)stub-$(dir))
 125
 126 # Since stubs.h is never needed when building the library, we simplify the
 127 # hairy installation process by producing it in place only as the last part
 128 # of the top-level `make install'.  It depends on subdir_install, which
 129 # iterates over all the subdirs; subdir_install in each subdir depends on
 130 # the subdir's stubs file.  Having more direct dependencies would result in
 131 # extra iterations over the list for subdirs and many recursive makes.
 132 $(includedir)/stubs.h: subdir_install
 133         @rm -f $(objpfx)stubs.h
 134         (echo '/* This file is automatically generated.';\
 135          echo '   It defines a symbol `__stub_FUNCTION'\'' for each function';\
 136          echo '   in the C library which is a stub, meaning it will fail';\
 137          echo '   every time called, usually setting errno to ENOSYS.  */';\
 138          sort $(subdir-stubs)) > $(objpfx)stubs.h
 139         $(INSTALL_DATA) $(objpfx)stubs.h $@
 140         rm -f $(objpfx)stubs.h
 141 \f
 142 # This makes the Info or DVI file of the documentation from the Texinfo source.
 143 .PHONY: info dvi
 144 info dvi:
 145         $(MAKE) -C manual $@
 146 \f
 147 # This makes all the subdirectory targets.
 148
 149 # For each target, make it depend on DIR/target for each subdirectory DIR.
 150 $(+subdir_targets): %: $(addsuffix /%,$(subdirs))
 151
 152 # Compute a list of all those targets.
 153 all-subdirs-targets := $(foreach dir,$(subdirs),\
 154                                  $(addprefix $(dir)/,$(+subdir_targets)))
 155
 156 # The action for each of those is to cd into the directory and make the
 157 # target there.
 158 $(all-subdirs-targets):
 159         $(MAKE) -C $(@D) $(@F)
 160
 161 .PHONY: $(+subdir_targets) $(all-subdirs-targets)
 162 \f
 163 # Targets to clean things up to various degrees.
 164
 165 .PHONY: clean realclean distclean distclean-1 parent-clean parent-mostlyclean
 166
 167 # Subroutines of all cleaning targets.
 168 parent-mostlyclean: common-mostlyclean # common-mostlyclean is in Makerules.
 169         -rm -f $(libc.a) $(addprefix $(objpfx),$(install-lib))
 170 parent-clean: parent-mostlyclean common-clean
 171         -rm -f $(addprefix $(common-objpfx),$(common-generated))
 172         -rm -f $(addprefix $(+sysdir_pfx),sysd-Makefile sysd-dirs sysd-rules)
 173
 174 clean: parent-clean
 175 # This is done this way rather than having `subdir_clean' be a
 176 # dependency of this target so that libc.a will be removed before the
 177 # subdirectories are dealt with and so they won't try to remove object
 178 # files from it when it's going to be removed anyway.
 179         @$(MAKE) subdir_clean no_deps=t
 180 mostlyclean: parent-mostlyclean
 181         @$(MAKE) subdir_mostlyclean no_deps=t
 182
 183 # The realclean target is just like distclean for the parent, but we want
 184 # the subdirs to know the difference in case they care.
 185 realclean distclean: parent-clean
 186 # This is done this way rather than having `subdir_distclean' be a
 187 # dependency of this target so that libc.a will be removed before the
 188 # subdirectories are dealt with and so they won't try to remove object
 189 # files from it when it's going to be removed anyway.
 190         @$(MAKE) distclean-1 no_deps=t distclean-1=$@ avoid-generated=yes
 191
 192 # Subroutine of distclean and realclean.
 193 distclean-1: subdir_$(distclean-1)
 194         -rm -f $(config-generated)
 195         -rm -f $(addprefix $(objpfx),config.status cache.cache)
 196         -rm -f $(addprefix $(objpfx),config.make config-name.h)
 197 ifdef objdir
 198         -rm -f $(objpfx)Makefile
 199 endif
 200         -rm -f $(sysdep-$(distclean-1))
 201 \f
 202 .PHONY: echo_subdirs
 203 echo_subdirs:;@echo '$(subdirs)'
 204
 205 .PHONY: echo-distinfo parent_echo-distinfo
 206 echo-distinfo: parent_echo-distinfo subdir_echo-distinfo
 207 parent_echo-distinfo:
 208         @echo $(addprefix +header+,$(headers)) \
 209               $(addprefix +nodist+,$(generated))
 210 \f
 211 # Make the distribution tarfile.
 212
 213 distribute  := README INSTALL NOTES COPYING.LIB COPYING ChangeLog NEWS  \
 214                Makefile Makeconfig Makerules Rules Make-dist MakeTAGS   \
 215                ansidecl.h mkinstalldirs move-if-change install-sh       \
 216                configure configure.in aclocal.m4 config.sub config.guess\
 217                config.make.in config-name.in Makefile.in \
 218                munch-tmpl.c munch.awk sysdep.h set-hooks.h libc-symbols.h
 219
 220 distribute := $(strip $(distribute))
 221 generated := $(generated) stubs.h
 222
 223 README: README.template version.c ; # Make-dist should update README.
 224
 225 define format-me
 226 @rm -f $@
 227 makeinfo --no-validate --no-warn --no-headers $< -o $@
 228 -chmod a-w $@
 229 endef
 230 INSTALL: manual/maint.texi; $(format-me)
 231 NOTES: manual/creature.texi; $(format-me)