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