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