Makefile

   1 # Copyright (C) 1991-2017 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 Lesser General Public
   6 # License as published by the Free Software Foundation; either
   7 # version 2.1 of the 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 # Lesser General Public License for more details.
  13
  14 # You should have received a copy of the GNU Lesser General Public
  15 # License along with the GNU C Library; if not, see
  16 # <http://www.gnu.org/licenses/>.
  17
  18 #
  19 #       Master Makefile for the GNU C library
  20 #
  21 ifneq (,)
  22 This makefile requires GNU Make.
  23 endif
  24
  25 include Makeconfig
  26
  27
  28 # This is the default target; it makes everything except the tests.
  29 .PHONY: all
  30 all: lib others
  31 \f
  32 ifneq ($(AUTOCONF),no)
  33
  34 define autoconf-it
  35 @-rm -f $@.new
  36 $(AUTOCONF) $(ACFLAGS) $< > $@.new
  37 chmod a-w$(patsubst %,$(comma)a+x,$(filter .,$(@D))) $@.new
  38 mv -f $@.new $@
  39 endef
  40
  41 configure: configure.ac aclocal.m4; $(autoconf-it)
  42 %/configure: %/configure.ac aclocal.m4; $(autoconf-it)
  43 %/preconfigure: %/preconfigure.ac aclocal.m4; $(autoconf-it)
  44
  45 endif # $(AUTOCONF) = no
  46
  47
  48 # We don't want to run anything here in parallel.
  49 .NOTPARALLEL:
  50
  51 # These are the targets that are made by making them in each subdirectory.
  52 +subdir_targets := subdir_lib objects objs others subdir_mostlyclean    \
  53                    subdir_clean subdir_distclean subdir_realclean       \
  54                    tests xtests                                         \
  55                    subdir_update-abi subdir_check-abi                   \
  56                    subdir_update-all-abi                                \
  57                    subdir_echo-headers                                  \
  58                    subdir_install                                       \
  59                    subdir_objs subdir_stubs subdir_testclean            \
  60                    $(addprefix install-, no-libc.a bin lib data headers others)
  61 \f
  62 headers := limits.h values.h features.h gnu-versions.h \
  63            bits/xopen_lim.h gnu/libc-version.h stdc-predef.h \
  64            bits/libc-header-start.h
  65
  66 echo-headers: subdir_echo-headers
  67
  68 # The headers are in the include directory.
  69 subdir-dirs = include
  70 vpath %.h $(subdir-dirs)
  71
  72 # What to install.
  73 install-others = $(inst_includedir)/gnu/stubs.h
  74 install-bin-script =
  75
  76 ifeq (yes,$(build-shared))
  77 headers += gnu/lib-names.h
  78 endif
  79
  80 include Makerules
  81
  82 ifeq ($(build-programs),yes)
  83 others: $(addprefix $(objpfx),$(install-bin-script))
  84 endif
  85
  86 # Install from subdirectories too.
  87 install: subdir_install
  88
  89 # Explicit dependency so that `make install-headers' works
  90 install-headers: install-headers-nosubdir
  91
  92 # Make sure that the dynamic linker is installed before libc.
  93 $(inst_slibdir)/libc-$(version).so: elf/ldso_install
  94
  95 .PHONY: elf/ldso_install
  96 elf/ldso_install:
  97         $(MAKE) -C $(@D) $(@F)
  98
  99 # Create links for shared libraries using the `ldconfig' program if possible.
 100 # Ignore the error if we cannot update /etc/ld.so.cache.
 101 ifeq (no,$(cross-compiling))
 102 ifeq (yes,$(build-shared))
 103 install: install-symbolic-link
 104 .PHONY: install-symbolic-link
 105 install-symbolic-link: subdir_install
 106         $(symbolic-link-prog) $(symbolic-link-list)
 107         rm -f $(symbolic-link-list)
 108
 109 install:
 110         -test ! -x $(elf-objpfx)ldconfig || LC_ALL=C \
 111           $(elf-objpfx)ldconfig $(addprefix -r ,$(install_root)) \
 112                                 $(slibdir) $(libdir)
 113 ifneq (no,$(PERL))
 114 ifeq (/usr,$(prefix))
 115 ifeq (,$(install_root))
 116         LD_SO=$(ld.so-version) CC="$(CC)" $(PERL) scripts/test-installation.pl $(common-objpfx)
 117 endif
 118 endif
 119 endif
 120 endif
 121 endif
 122
 123 # Build subdirectory lib objects.
 124 lib-noranlib: subdir_lib
 125
 126 ifeq (yes,$(build-shared))
 127 # Build the shared object from the PIC object library.
 128 lib: $(common-objpfx)libc.so $(common-objpfx)linkobj/libc.so
 129 endif # $(build-shared)
 130
 131
 132 # This is a handy script for running any dynamically linked program against
 133 # the current libc build for testing.
 134 $(common-objpfx)testrun.sh: $(common-objpfx)config.make \
 135                             $(..)Makeconfig $(..)Makefile
 136         (echo '#!/bin/sh'; \
 137          echo 'builddir=`dirname "$$0"`'; \
 138          echo 'GCONV_PATH="$${builddir}/iconvdata" \'; \
 139          echo 'exec $(subst $(common-objdir),"$${builddir}",\
 140                             $(test-program-prefix)) $${1+"$$@"}'; \
 141         ) > $@T
 142         chmod a+x $@T
 143         mv -f $@T $@
 144 postclean-generated += testrun.sh
 145
 146 others: $(common-objpfx)testrun.sh
 147 \f
 148 # Makerules creates a file `stubs' in each subdirectory, which
 149 # contains `#define __stub_FUNCTION' for each function defined in that
 150 # directory which is a stub.
 151 # Here we paste all of these together into <gnu/stubs.h>.
 152
 153 subdir-stubs := $(foreach dir,$(subdirs),$(common-objpfx)$(dir)/stubs)
 154
 155 ifndef abi-variants
 156 installed-stubs = $(inst_includedir)/gnu/stubs.h
 157 else
 158 installed-stubs = $(inst_includedir)/gnu/stubs-$(default-abi).h
 159
 160 $(inst_includedir)/gnu/stubs.h: $(+force)
 161         $(make-target-directory)
 162         { \
 163          echo '/* This file is automatically generated.';\
 164          echo "   This file selects the right generated file of \`__stub_FUNCTION' macros";\
 165          echo '   based on the architecture being compiled for.  */'; \
 166          echo ''; \
 167          $(foreach h,$(abi-includes), echo '#include <$(h)>';) \
 168          echo ''; \
 169          $(foreach v,$(abi-variants),\
 170          $(if $(abi-$(v)-condition),\
 171          echo '#if $(abi-$(v)-condition)'; \
 172          echo '# include <gnu/stubs-$(v).h>'); \
 173          $(if $(abi-$(v)-condition),echo '#endif';) \
 174          rm -f $(@:.d=.h).new$(v); \
 175          ) \
 176         } > $(@:.d=.h).new
 177         mv -f $(@:.d=.h).new $(@:.d=.h)
 178
 179 install-others-nosubdir: $(installed-stubs)
 180 endif
 181
 182
 183 # Since stubs.h is never needed when building the library, we simplify the
 184 # hairy installation process by producing it in place only as the last part
 185 # of the top-level `make install'.  It depends on subdir_install, which
 186 # iterates over all the subdirs; subdir_install in each subdir depends on
 187 # the subdir's stubs file.  Having more direct dependencies would result in
 188 # extra iterations over the list for subdirs and many recursive makes.
 189 $(installed-stubs): include/stubs-prologue.h subdir_install
 190         $(make-target-directory)
 191         @rm -f $(objpfx)stubs.h
 192         (sed '/^@/d' $<; LC_ALL=C sort $(subdir-stubs)) > $(objpfx)stubs.h
 193         if test -r $@ && cmp -s $(objpfx)stubs.h $@; \
 194         then echo 'stubs.h unchanged'; \
 195         else $(INSTALL_DATA) $(objpfx)stubs.h $@; fi
 196         rm -f $(objpfx)stubs.h
 197 \f
 198 # This makes the Info or DVI file of the documentation from the Texinfo source.
 199 .PHONY: info dvi pdf html
 200 info dvi pdf html:
 201         $(MAKE) $(PARALLELMFLAGS) -C manual $@
 202 \f
 203 # This makes all the subdirectory targets.
 204
 205 # For each target, make it depend on DIR/target for each subdirectory DIR.
 206 $(+subdir_targets): %: $(addsuffix /%,$(subdirs))
 207
 208 # Compute a list of all those targets.
 209 all-subdirs-targets := $(foreach dir,$(subdirs),\
 210                                  $(addprefix $(dir)/,$(+subdir_targets)))
 211
 212 # The action for each of those is to cd into the directory and make the
 213 # target there.
 214 $(all-subdirs-targets):
 215         $(MAKE) $(PARALLELMFLAGS) $(subdir-target-args) $(@F)
 216
 217 define subdir-target-args
 218 subdir=$(@D)$(if $($(@D)-srcdir),\
 219 -C $($(@D)-srcdir) ..=`pwd`/,\
 220 -C $(@D) ..=../)
 221 endef
 222
 223 .PHONY: $(+subdir_targets) $(all-subdirs-targets)
 224 \f
 225 # Targets to clean things up to various degrees.
 226
 227 .PHONY: clean realclean distclean distclean-1 parent-clean parent-mostlyclean \
 228         tests-clean
 229
 230 # Subroutines of all cleaning targets.
 231 parent-mostlyclean: common-mostlyclean # common-mostlyclean is in Makerules.
 232         -rm -f $(foreach o,$(object-suffixes-for-libc),\
 233                    $(common-objpfx)$(patsubst %,$(libtype$o),c)) \
 234                $(addprefix $(objpfx),$(install-lib))
 235 parent-clean: parent-mostlyclean common-clean
 236
 237 postclean = $(addprefix $(common-objpfx),$(postclean-generated)) \
 238             $(addprefix $(objpfx),sysd-dirs sysd-rules) \
 239             $(addprefix $(objpfx),sysd-sorted soversions.mk soversions.i)
 240
 241 clean: parent-clean
 242 # This is done this way rather than having `subdir_clean' be a
 243 # dependency of this target so that libc.a will be removed before the
 244 # subdirectories are dealt with and so they won't try to remove object
 245 # files from it when it's going to be removed anyway.
 246         @$(MAKE) subdir_clean no_deps=t
 247         -rm -f $(postclean)
 248 mostlyclean: parent-mostlyclean
 249         @$(MAKE) subdir_mostlyclean no_deps=t
 250         -rm -f $(postclean)
 251
 252 tests-clean:
 253         @$(MAKE) subdir_testclean no_deps=t
 254
 255 ifneq (,$(CXX))
 256 vpath c++-types.data $(+sysdep_dirs)
 257
 258 tests-special += $(objpfx)c++-types-check.out
 259 $(objpfx)c++-types-check.out: c++-types.data scripts/check-c++-types.sh
 260         scripts/check-c++-types.sh $< $(CXX) $(filter-out -std=gnu11 $(+gccwarn-c),$(CFLAGS)) $(CPPFLAGS) > $@; \
 261         $(evaluate-test)
 262 endif
 263
 264 tests-special += $(objpfx)check-local-headers.out
 265 $(objpfx)check-local-headers.out: scripts/check-local-headers.sh
 266         AWK='$(AWK)' scripts/check-local-headers.sh \
 267           "$(includedir)" "$(objpfx)" < /dev/null > $@; \
 268         $(evaluate-test)
 269
 270 ifneq "$(headers)" ""
 271 # Special test of all the installed headers in this directory.
 272 tests-special += $(objpfx)check-installed-headers-c.out
 273 libof-check-installed-headers-c := nonlib
 274 $(objpfx)check-installed-headers-c.out: \
 275     scripts/check-installed-headers.sh $(headers)
 276         $(SHELL) $(..)scripts/check-installed-headers.sh c \
 277           "$(CC) $(filter-out -std=%,$(CFLAGS)) -D_ISOMAC $(+includes)" \
 278           $(headers) > $@; \
 279         $(evaluate-test)
 280
 281 ifneq "$(CXX)" ""
 282 tests-special += $(objpfx)check-installed-headers-cxx.out
 283 libof-check-installed-headers-cxx := nonlib
 284 $(objpfx)check-installed-headers-cxx.out: \
 285     scripts/check-installed-headers.sh $(headers)
 286         $(SHELL) $(..)scripts/check-installed-headers.sh c++ \
 287           "$(CXX) $(filter-out -std=%,$(CXXFLAGS)) -D_ISOMAC $(+includes)" \
 288           $(headers) > $@; \
 289         $(evaluate-test)
 290 endif
 291 endif
 292
 293 define summarize-tests
 294 @egrep -v '^(PASS|XFAIL):' $(objpfx)$1 || true
 295 @echo "Summary of test results$2:"
 296 @sed 's/:.*//' < $(objpfx)$1 | sort | uniq -c
 297 @! egrep -q -v '^(X?PASS|XFAIL|UNSUPPORTED):' $(objpfx)$1
 298 endef
 299
 300 tests-special-notdir = $(patsubst $(objpfx)%, %, $(tests-special))
 301 tests: $(tests-special)
 302         $(..)scripts/merge-test-results.sh -s $(objpfx) "" \
 303           $(sort $(tests-special-notdir:.out=)) \
 304           > $(objpfx)subdir-tests.sum
 305         $(..)scripts/merge-test-results.sh -t $(objpfx) subdir-tests.sum \
 306           $(sort $(subdirs) .) \
 307           > $(objpfx)tests.sum
 308         $(call summarize-tests,tests.sum)
 309 xtests:
 310         $(..)scripts/merge-test-results.sh -t $(objpfx) subdir-xtests.sum \
 311           $(sort $(subdirs)) \
 312           > $(objpfx)xtests.sum
 313         $(call summarize-tests,xtests.sum, for extra tests)
 314
 315 # The realclean target is just like distclean for the parent, but we want
 316 # the subdirs to know the difference in case they care.
 317 realclean distclean: parent-clean
 318 # This is done this way rather than having `subdir_distclean' be a
 319 # dependency of this target so that libc.a will be removed before the
 320 # subdirectories are dealt with and so they won't try to remove object
 321 # files from it when it's going to be removed anyway.
 322         @$(MAKE) distclean-1 no_deps=t distclean-1=$@ avoid-generated=yes \
 323                  sysdep-subdirs="$(sysdep-subdirs)"
 324         -rm -f $(postclean)
 325
 326 # Subroutine of distclean and realclean.
 327 distclean-1: subdir_$(distclean-1)
 328         -rm -f $(config-generated)
 329         -rm -f $(addprefix $(objpfx),config.status config.cache config.log)
 330         -rm -f $(addprefix $(objpfx),config.make config-name.h config.h)
 331 ifdef objdir
 332         -rm -f $(objpfx)Makefile
 333 endif
 334         -rm -f $(sysdep-$(distclean-1))
 335 \f
 336 # Make the TAGS file for Emacs users.
 337
 338 .PHONY: TAGS
 339 TAGS:
 340         scripts/list-sources.sh | sed -n -e '/Makefile/p' \
 341           $(foreach S,[chsSyl] cxx sh bash pl,\
 342                     $(subst .,\.,-e '/.$S\(.in\)*$$/p')) \
 343         | $(ETAGS) -o $@ -
 344 \f
 345 # Make the distribution tarfile.
 346 .PHONY: dist dist-prepare
 347
 348 generated := $(generated) stubs.h
 349
 350 files-for-dist := README INSTALL configure ChangeLog NEWS
 351
 352 # Regenerate stuff, then error if these things are not committed yet.
 353 dist-prepare: $(files-for-dist)
 354         conf=`find sysdeps $(addsuffix /sysdeps,$(sysdeps-add-ons)) \
 355                    -name configure`; \
 356         $(MAKE) $$conf && \
 357         git diff --stat HEAD -- $^ $$conf \
 358         | $(AWK) '{ print; rc=1 } END { exit rc }'
 359
 360 %.tar: FORCE
 361         git archive --prefix=$*/ $* > $@.new
 362         mv -f $@.new $@
 363
 364 # Do `make dist dist-version=X.Y.Z' to make tar files of an older version.
 365
 366 ifneq (,$(strip $(dist-version)))
 367 dist: $(foreach Z,.bz2 .gz .xz,$(dist-version).tar$Z)
 368         md5sum $^
 369 else
 370 dist: dist-prepare
 371         @if v=`git describe`; then \
 372           echo Distribution version $$v; \
 373           $(MAKE) dist dist-version=$$v; \
 374         else \
 375           false; \
 376         fi
 377 endif
 378
 379 INSTALL: manual/install-plain.texi manual/macros.texi \
 380          $(common-objpfx)manual/pkgvers.texi manual/install.texi
 381         makeinfo --no-validate --plaintext --no-number-sections \
 382                  -I$(common-objpfx)manual $< -o $@-tmp
 383         $(AWK) 'NF == 0 { ++n; next } \
 384                 NF != 0 { while (n-- > 0) print ""; n = 0; print }' \
 385           < $@-tmp > $@-tmp2
 386         rm -f $@-tmp
 387         -chmod a-w $@-tmp2
 388         mv -f $@-tmp2 $@
 389 $(common-objpfx)manual/%: FORCE
 390         $(MAKE) $(PARALLELMFLAGS) -C manual $@
 391 FORCE:
 392
 393 iconvdata/% localedata/% po/%: FORCE
 394         $(MAKE) $(PARALLELMFLAGS) -C $(@D) $(@F)