Makefile

   1 # Copyright (C) 1991, 92, 93, 94, 95, 96 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 aclocal.m4; $(autoconf-it)
  40 %/configure: %/configure.in aclocal.m4; $(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 db locale intl catgets math setjmp signal stdlib \
  55           stdio-common $(stdio) malloc string wcsmbs time dirent grp pwd\
  56           posix io termios resource misc login socket sysvipc gmon gnulib \
  57           wctype manual shadow $(sysdep-subdirs) nss elf po $(add-ons)
  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 # much of the 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_distinfo                                      \
  80                    subdir_echo-headers subdir_echo-distinfo             \
  81                    subdir_install                                       \
  82                    $(addprefix install-, no-libc.a bin lib data headers others)
  83 \f
  84 headers := errno.h sys/errno.h errnos.h limits.h values.h       \
  85            features.h gnu-versions.h libc-lock.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 sysdir in $(config-sysdirs); do                                  \
 120            case $$sysdir in                                                   \
 121              /*) dir=$$sysdir ;;                                              \
 122              *)  dir=$(..)$$sysdir ;;                                         \
 123            esac;                                                              \
 124            if [ -r $$dir/Subdirs ]; then                                      \
 125              sed 's/#.*$$//' $$dir/Subdirs;                                   \
 126            else true;                                                         \
 127            fi;                                                                \
 128          done;                                                                \
 129          echo endef) > $@-tmp
 130          mv -f $@-tmp $@
 131 \f
 132 $(objpfx)version-info.h: $(..)Makefile $(+sysdir_pfx)config.make
 133         (first=yes;                                                           \
 134          for dir in $(subdirs); do                                            \
 135            if [ -r $$dir/Banner ]; then                                       \
 136              if [ $$first = yes ]; then                                       \
 137                echo "\"Available extensions:";                                \
 138                first=no;                                                      \
 139              fi;                                                              \
 140              sed -e '/^#/d' -e 's/^[[:space:]]*/        /' $$dir/Banner;    \
 141            fi;                                                                \
 142          done;                                                                \
 143          [ $first = yes ] || echo "\"") > $@-tmp
 144          mv -f $@-tmp $@
 145
 146 version.c-objects := $(addprefix $(objpfx)version,$(object-suffixes))
 147 $(version.c-objects): $(objpfx)version-info.h
 148 \f
 149 # Makerules creates a file `stub-$(subdir)' for each subdirectory, which
 150 # contains `#define __stub_FUNCTION' for each function which is a stub.
 151 # Here we paste all of these together into <stubs.h>.
 152
 153 subdir-stubs := $(foreach dir,$(subdirs),$(common-objpfx)stub-$(dir))
 154
 155 # Since stubs.h is never needed when building the library, we simplify the
 156 # hairy installation process by producing it in place only as the last part
 157 # of the top-level `make install'.  It depends on subdir_install, which
 158 # iterates over all the subdirs; subdir_install in each subdir depends on
 159 # the subdir's stubs file.  Having more direct dependencies would result in
 160 # extra iterations over the list for subdirs and many recursive makes.
 161 $(includedir)/stubs.h: subdir_install
 162         @rm -f $(objpfx)stubs.h
 163         (echo '/* This file is automatically generated.';\
 164          echo '   It defines a symbol `__stub_FUNCTION'\'' for each function';\
 165          echo '   in the C library which is a stub, meaning it will fail';\
 166          echo '   every time called, usually setting errno to ENOSYS.  */';\
 167          sort $(subdir-stubs)) > $(objpfx)stubs.h
 168         if test -r $@ && cmp -s $(objpfx)stubs.h $@; \
 169         then echo stubs.h unchanged ; \
 170         else $(INSTALL_DATA) $(objpfx)stubs.h $@; fi
 171         rm -f $(objpfx)stubs.h
 172 \f
 173 # This makes the Info or DVI file of the documentation from the Texinfo source.
 174 .PHONY: info dvi
 175 info dvi:
 176         $(MAKE) -C manual $@
 177 \f
 178 # This makes all the subdirectory targets.
 179
 180 # For each target, make it depend on DIR/target for each subdirectory DIR.
 181 $(+subdir_targets): %: $(addsuffix /%,$(subdirs))
 182
 183 # Compute a list of all those targets.
 184 all-subdirs-targets := $(foreach dir,$(subdirs),\
 185                                  $(addprefix $(dir)/,$(+subdir_targets)))
 186
 187 # The action for each of those is to cd into the directory and make the
 188 # target there.
 189 $(all-subdirs-targets):
 190         $(MAKE) -C $(@D) $(@F)
 191
 192 .PHONY: $(+subdir_targets) $(all-subdirs-targets)
 193 \f
 194 # Targets to clean things up to various degrees.
 195
 196 .PHONY: clean realclean distclean distclean-1 parent-clean parent-mostlyclean
 197
 198 # Subroutines of all cleaning targets.
 199 parent-mostlyclean: common-mostlyclean # common-mostlyclean is in Makerules.
 200         -rm -f $(foreach o,$(object-suffixes),\
 201                    $(common-objpfx)$(patsubst %,$(libtype$o),c)) \
 202                $(addprefix $(objpfx),$(install-lib))
 203 parent-clean: parent-mostlyclean common-clean
 204         -rm -f $(addprefix $(common-objpfx),$(common-generated))
 205         -rm -f $(addprefix $(objpfx),sysd-Makefile sysd-dirs sysd-rules)
 206
 207 clean: parent-clean
 208 # This is done this way rather than having `subdir_clean' be a
 209 # dependency of this target so that libc.a will be removed before the
 210 # subdirectories are dealt with and so they won't try to remove object
 211 # files from it when it's going to be removed anyway.
 212         @$(MAKE) subdir_clean no_deps=t
 213 mostlyclean: parent-mostlyclean
 214         @$(MAKE) subdir_mostlyclean no_deps=t
 215
 216 # The realclean target is just like distclean for the parent, but we want
 217 # the subdirs to know the difference in case they care.
 218 realclean distclean: parent-clean
 219 # This is done this way rather than having `subdir_distclean' be a
 220 # dependency of this target so that libc.a will be removed before the
 221 # subdirectories are dealt with and so they won't try to remove object
 222 # files from it when it's going to be removed anyway.
 223         @$(MAKE) distclean-1 no_deps=t distclean-1=$@ avoid-generated=yes
 224
 225 # Subroutine of distclean and realclean.
 226 distclean-1: subdir_$(distclean-1)
 227         -rm -f $(config-generated)
 228         -rm -f $(addprefix $(objpfx),config.status config.cache config.log)
 229         -rm -f $(addprefix $(objpfx),config.make config-name.h config.h)
 230 ifdef objdir
 231         -rm -f $(objpfx)Makefile
 232 endif
 233         -rm -f $(sysdep-$(distclean-1))
 234 \f
 235 .PHONY: echo_subdirs
 236 echo_subdirs:;@echo '$(subdirs)'
 237
 238 .PHONY: echo-distinfo parent_echo-distinfo
 239 echo-distinfo: parent_echo-distinfo subdir_echo-distinfo
 240 parent_echo-distinfo:
 241         @echo $(addprefix +header+,$(headers)) \
 242               $(addprefix +nodist+,$(generated))
 243
 244 \f
 245 # Make the distribution tarfile.
 246
 247 distribute  := README INSTALL FAQ NOTES NEWS PROJECTS                   \
 248                COPYING.LIB COPYING ChangeLog ChangeLog.[0-9]            \
 249                Makefile Makeconfig Makerules Rules Make-dist MakeTAGS   \
 250                extra-lib.mk o-iterator.mk                               \
 251                ansidecl.h mkinstalldirs move-if-change install-sh       \
 252                configure configure.in aclocal.m4 config.sub config.guess\
 253                config.h.in config.make.in config-name.in Makefile.in    \
 254                autolock.sh munch-tmpl.c munch.awk \
 255                sysdep.h set-hooks.h libc-symbols.h version.h shlib-versions \
 256                rpm/Makefile rpm/template rpm/rpmrc
 257
 258 distribute := $(strip $(distribute))
 259 generated := $(generated) stubs.h
 260
 261 README: README.template version.c ; # Make-dist should update README.
 262
 263 define format-me
 264 @rm -f $@
 265 makeinfo --no-validate --no-warn --no-headers $< -o $@
 266 -chmod a-w $@
 267 endef
 268 INSTALL: manual/maint.texi; $(format-me)
 269 NOTES: manual/creature.texi; $(format-me)
 270
 271 rpm/%: subdir_distinfo
 272         $(MAKE) -C $(@D) subdirs='$(subdirs)' $(@F)