Makefile

   1 # Copyright (C) 1991-2018 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 # Used to build testrun.sh.
 132 define testrun-script
 133 #!/bin/bash
 134 builddir=`dirname "$$0"`
 135 GCONV_PATH="$${builddir}/iconvdata"
 136
 137 usage () {
 138   echo "usage: $$0 [--tool=strace] PROGRAM [ARGUMENTS...]" 2>&1
 139   echo "       $$0 --tool=valgrind PROGRAM [ARGUMENTS...]" 2>&1
 140 }
 141
 142 toolname=default
 143 while test $$# -gt 0 ; do
 144   case "$$1" in
 145     --tool=*)
 146       toolname="$${1:7}"
 147       shift
 148       ;;
 149     --*)
 150       usage
 151       ;;
 152     *)
 153       break
 154       ;;
 155   esac
 156 done
 157
 158 if test $$# -eq 0 ; then
 159   usage
 160 fi
 161
 162 case "$$toolname" in
 163   default)
 164     exec $(subst $(common-objdir),"$${builddir}", $(test-program-prefix)) \
 165       $${1+"$$@"}
 166     ;;
 167   strace)
 168     exec strace $(patsubst %, -E%, $(run-program-env)) \
 169       $(test-via-rtld-prefix) $${1+"$$@"}
 170     ;;
 171   valgrind)
 172     exec env $(run-program-env) valgrind $(test-via-rtld-prefix) $${1+"$$@"}
 173     ;;
 174   *)
 175     usage
 176     ;;
 177 esac
 178 endef
 179
 180 # This is a handy script for running any dynamically linked program against
 181 # the current libc build for testing.
 182 $(common-objpfx)testrun.sh: $(common-objpfx)config.make \
 183                             $(..)Makeconfig $(..)Makefile
 184         $(file >$@T,$(testrun-script))
 185         chmod a+x $@T
 186         mv -f $@T $@
 187 postclean-generated += testrun.sh
 188
 189 others: $(common-objpfx)testrun.sh
 190 \f
 191 # Makerules creates a file `stubs' in each subdirectory, which
 192 # contains `#define __stub_FUNCTION' for each function defined in that
 193 # directory which is a stub.
 194 # Here we paste all of these together into <gnu/stubs.h>.
 195
 196 subdir-stubs := $(foreach dir,$(subdirs),$(common-objpfx)$(dir)/stubs)
 197
 198 ifndef abi-variants
 199 installed-stubs = $(inst_includedir)/gnu/stubs.h
 200 else
 201 installed-stubs = $(inst_includedir)/gnu/stubs-$(default-abi).h
 202
 203 $(inst_includedir)/gnu/stubs.h: $(+force)
 204         $(make-target-directory)
 205         { \
 206          echo '/* This file is automatically generated.';\
 207          echo "   This file selects the right generated file of \`__stub_FUNCTION' macros";\
 208          echo '   based on the architecture being compiled for.  */'; \
 209          echo ''; \
 210          $(foreach h,$(abi-includes), echo '#include <$(h)>';) \
 211          echo ''; \
 212          $(foreach v,$(abi-variants),\
 213          $(if $(abi-$(v)-condition),\
 214          echo '#if $(abi-$(v)-condition)'; \
 215          echo '# include <gnu/stubs-$(v).h>'); \
 216          $(if $(abi-$(v)-condition),echo '#endif';) \
 217          rm -f $(@:.d=.h).new$(v); \
 218          ) \
 219         } > $(@:.d=.h).new
 220         mv -f $(@:.d=.h).new $(@:.d=.h)
 221
 222 install-others-nosubdir: $(installed-stubs)
 223 endif
 224
 225
 226 # Since stubs.h is never needed when building the library, we simplify the
 227 # hairy installation process by producing it in place only as the last part
 228 # of the top-level `make install'.  It depends on subdir_install, which
 229 # iterates over all the subdirs; subdir_install in each subdir depends on
 230 # the subdir's stubs file.  Having more direct dependencies would result in
 231 # extra iterations over the list for subdirs and many recursive makes.
 232 $(installed-stubs): include/stubs-prologue.h subdir_install
 233         $(make-target-directory)
 234         @rm -f $(objpfx)stubs.h
 235         (sed '/^@/d' $<; LC_ALL=C sort $(subdir-stubs)) > $(objpfx)stubs.h
 236         if test -r $@ && cmp -s $(objpfx)stubs.h $@; \
 237         then echo 'stubs.h unchanged'; \
 238         else $(INSTALL_DATA) $(objpfx)stubs.h $@; fi
 239         rm -f $(objpfx)stubs.h
 240 \f
 241 # This makes the Info or DVI file of the documentation from the Texinfo source.
 242 .PHONY: info dvi pdf html
 243 info dvi pdf html:
 244         $(MAKE) $(PARALLELMFLAGS) -C manual $@
 245 \f
 246 # This makes all the subdirectory targets.
 247
 248 # For each target, make it depend on DIR/target for each subdirectory DIR.
 249 $(+subdir_targets): %: $(addsuffix /%,$(subdirs))
 250
 251 # Compute a list of all those targets.
 252 all-subdirs-targets := $(foreach dir,$(subdirs),\
 253                                  $(addprefix $(dir)/,$(+subdir_targets)))
 254
 255 # The action for each of those is to cd into the directory and make the
 256 # target there.
 257 $(all-subdirs-targets):
 258         $(MAKE) $(PARALLELMFLAGS) $(subdir-target-args) $(@F)
 259
 260 define subdir-target-args
 261 subdir=$(@D)$(if $($(@D)-srcdir),\
 262 -C $($(@D)-srcdir) ..=`pwd`/,\
 263 -C $(@D) ..=../)
 264 endef
 265
 266 .PHONY: $(+subdir_targets) $(all-subdirs-targets)
 267 \f
 268 # Targets to clean things up to various degrees.
 269
 270 .PHONY: clean realclean distclean distclean-1 parent-clean parent-mostlyclean \
 271         tests-clean
 272
 273 # Subroutines of all cleaning targets.
 274 parent-mostlyclean: common-mostlyclean # common-mostlyclean is in Makerules.
 275         -rm -f $(foreach o,$(object-suffixes-for-libc),\
 276                    $(common-objpfx)$(patsubst %,$(libtype$o),c)) \
 277                $(addprefix $(objpfx),$(install-lib))
 278 parent-clean: parent-mostlyclean common-clean
 279
 280 postclean = $(addprefix $(common-objpfx),$(postclean-generated)) \
 281             $(addprefix $(objpfx),sysd-dirs sysd-rules) \
 282             $(addprefix $(objpfx),sysd-sorted soversions.mk soversions.i)
 283
 284 clean: parent-clean
 285 # This is done this way rather than having `subdir_clean' be a
 286 # dependency of this target so that libc.a will be removed before the
 287 # subdirectories are dealt with and so they won't try to remove object
 288 # files from it when it's going to be removed anyway.
 289         @$(MAKE) subdir_clean no_deps=t
 290         -rm -f $(postclean)
 291 mostlyclean: parent-mostlyclean
 292         @$(MAKE) subdir_mostlyclean no_deps=t
 293         -rm -f $(postclean)
 294
 295 tests-clean:
 296         @$(MAKE) subdir_testclean no_deps=t
 297
 298 ifneq (,$(CXX))
 299 vpath c++-types.data $(+sysdep_dirs)
 300
 301 tests-special += $(objpfx)c++-types-check.out
 302 $(objpfx)c++-types-check.out: c++-types.data scripts/check-c++-types.sh
 303         scripts/check-c++-types.sh $< $(CXX) $(filter-out -std=gnu11 $(+gccwarn-c),$(CFLAGS)) $(CPPFLAGS) > $@; \
 304         $(evaluate-test)
 305 endif
 306
 307 tests-special += $(objpfx)check-local-headers.out
 308 $(objpfx)check-local-headers.out: scripts/check-local-headers.sh
 309         AWK='$(AWK)' scripts/check-local-headers.sh \
 310           "$(includedir)" "$(objpfx)" < /dev/null > $@; \
 311         $(evaluate-test)
 312
 313 ifneq "$(headers)" ""
 314 # Special test of all the installed headers in this directory.
 315 tests-special += $(objpfx)check-installed-headers-c.out
 316 libof-check-installed-headers-c := testsuite
 317 $(objpfx)check-installed-headers-c.out: \
 318     scripts/check-installed-headers.sh $(headers)
 319         $(SHELL) $(..)scripts/check-installed-headers.sh c \
 320           "$(CC) $(filter-out -std=%,$(CFLAGS)) -D_ISOMAC $(+includes)" \
 321           $(headers) > $@; \
 322         $(evaluate-test)
 323
 324 ifneq "$(CXX)" ""
 325 tests-special += $(objpfx)check-installed-headers-cxx.out
 326 libof-check-installed-headers-cxx := testsuite
 327 $(objpfx)check-installed-headers-cxx.out: \
 328     scripts/check-installed-headers.sh $(headers)
 329         $(SHELL) $(..)scripts/check-installed-headers.sh c++ \
 330           "$(CXX) $(filter-out -std=%,$(CXXFLAGS)) -D_ISOMAC $(+includes)" \
 331           $(headers) > $@; \
 332         $(evaluate-test)
 333 endif
 334 endif
 335
 336 define summarize-tests
 337 @egrep -v '^(PASS|XFAIL):' $(objpfx)$1 || true
 338 @echo "Summary of test results$2:"
 339 @sed 's/:.*//' < $(objpfx)$1 | sort | uniq -c
 340 @! egrep -q -v '^(X?PASS|XFAIL|UNSUPPORTED):' $(objpfx)$1
 341 endef
 342
 343 # The intention here is to do ONE install of our build into the
 344 # testroot.pristine/ directory, then rsync (internal to
 345 # support/test-container) that to testroot.root/ at the start of each
 346 # test.  That way we can promise each test a "clean" install, without
 347 # having to do the install for each test.
 348 #
 349 # In addition, we have to copy some files (which we build) into this
 350 # root in addition to what glibc installs.  For example, many tests
 351 # require additional programs including /bin/sh, /bin/true, and
 352 # /bin/echo, all of which we build below to limit library dependencies
 353 # to just those things in glibc and language support libraries which
 354 # we also copy into the into the rootfs.  To determine what language
 355 # support libraries we need we build a "test" program in either C or
 356 # (if available) C++ just so we can copy in any shared objects
 357 # (which we do not build) that GCC-compiled programs depend on.
 358
 359
 360 ifeq (,$(CXX))
 361 LINKS_DSO_PROGRAM = links-dso-program-c
 362 else
 363 LINKS_DSO_PROGRAM = links-dso-program
 364 endif
 365
 366 $(tests-container) $(addsuffix /tests,$(subdirs)) : \
 367                 $(objpfx)testroot.pristine/install.stamp
 368 $(objpfx)testroot.pristine/install.stamp :
 369         test -d $(objpfx)testroot.pristine || \
 370           mkdir $(objpfx)testroot.pristine
 371         # We need a working /bin/sh for some of the tests.
 372         test -d $(objpfx)testroot.pristine/bin || \
 373           mkdir $(objpfx)testroot.pristine/bin
 374         cp $(objpfx)support/shell-container $(objpfx)testroot.pristine/bin/sh
 375         cp $(objpfx)support/echo-container $(objpfx)testroot.pristine/bin/echo
 376         cp $(objpfx)support/true-container $(objpfx)testroot.pristine/bin/true
 377         # Copy these DSOs first so we can overwrite them with our own.
 378         for dso in `$(test-wrapper-env) LD_TRACE_LOADED_OBJECTS=1  \
 379                 $(objpfx)elf/$(rtld-installed-name) \
 380                 $(objpfx)testroot.pristine/bin/sh \
 381                 | grep / | sed 's/^[^/]*//' | sed 's/ .*//'` ;\
 382           do \
 383             test -d `dirname $(objpfx)testroot.pristine$$dso` || \
 384               mkdir -p `dirname $(objpfx)testroot.pristine$$dso` ;\
 385             $(test-wrapper) cp $$dso $(objpfx)testroot.pristine$$dso ;\
 386           done
 387         for dso in `$(test-wrapper-env) LD_TRACE_LOADED_OBJECTS=1  \
 388                 $(objpfx)elf/$(rtld-installed-name) \
 389                 $(objpfx)support/$(LINKS_DSO_PROGRAM) \
 390                 | grep / | sed 's/^[^/]*//' | sed 's/ .*//'` ;\
 391           do \
 392             test -d `dirname $(objpfx)testroot.pristine$$dso` || \
 393               mkdir -p `dirname $(objpfx)testroot.pristine$$dso` ;\
 394             $(test-wrapper) cp $$dso $(objpfx)testroot.pristine$$dso ;\
 395           done
 396         $(MAKE) install DESTDIR=$(objpfx)testroot.pristine
 397         touch $(objpfx)testroot.pristine/install.stamp
 398
 399 tests-special-notdir = $(patsubst $(objpfx)%, %, $(tests-special))
 400 tests: $(tests-special)
 401         $(..)scripts/merge-test-results.sh -s $(objpfx) "" \
 402           $(sort $(tests-special-notdir:.out=)) \
 403           > $(objpfx)subdir-tests.sum
 404         $(..)scripts/merge-test-results.sh -t $(objpfx) subdir-tests.sum \
 405           $(sort $(subdirs) .) \
 406           > $(objpfx)tests.sum
 407         $(call summarize-tests,tests.sum)
 408 xtests:
 409         $(..)scripts/merge-test-results.sh -t $(objpfx) subdir-xtests.sum \
 410           $(sort $(subdirs)) \
 411           > $(objpfx)xtests.sum
 412         $(call summarize-tests,xtests.sum, for extra tests)
 413
 414 # The realclean target is just like distclean for the parent, but we want
 415 # the subdirs to know the difference in case they care.
 416 realclean distclean: parent-clean
 417 # This is done this way rather than having `subdir_distclean' be a
 418 # dependency of this target so that libc.a will be removed before the
 419 # subdirectories are dealt with and so they won't try to remove object
 420 # files from it when it's going to be removed anyway.
 421         @$(MAKE) distclean-1 no_deps=t distclean-1=$@ avoid-generated=yes \
 422                  sysdep-subdirs="$(sysdep-subdirs)"
 423         -rm -f $(postclean)
 424
 425 # Subroutine of distclean and realclean.
 426 distclean-1: subdir_$(distclean-1)
 427         -rm -f $(config-generated)
 428         -rm -f $(addprefix $(objpfx),config.status config.cache config.log)
 429         -rm -f $(addprefix $(objpfx),config.make config-name.h config.h)
 430 ifdef objdir
 431         -rm -f $(objpfx)Makefile
 432 endif
 433         -rm -f $(sysdep-$(distclean-1))
 434 \f
 435 # Make the TAGS file for Emacs users.
 436
 437 .PHONY: TAGS
 438 TAGS:
 439         scripts/list-sources.sh | sed -n -e '/Makefile/p' \
 440           $(foreach S,[chsSyl] cxx sh bash pl,\
 441                     $(subst .,\.,-e '/.$S\(.in\)*$$/p')) \
 442         | $(ETAGS) -o $@ -
 443 \f
 444 # Make the distribution tarfile.
 445 .PHONY: dist dist-prepare
 446
 447 generated := $(generated) stubs.h
 448
 449 files-for-dist := README INSTALL configure ChangeLog NEWS
 450
 451 # Regenerate stuff, then error if these things are not committed yet.
 452 dist-prepare: $(files-for-dist)
 453         conf=`find sysdeps -name configure`; \
 454         $(MAKE) $$conf && \
 455         git diff --stat HEAD -- $^ $$conf \
 456         | $(AWK) '{ print; rc=1 } END { exit rc }'
 457
 458 %.tar: FORCE
 459         git archive --prefix=$*/ $* > $@.new
 460         mv -f $@.new $@
 461
 462 # Do `make dist dist-version=X.Y.Z' to make tar files of an older version.
 463
 464 ifneq (,$(strip $(dist-version)))
 465 dist: $(foreach Z,.bz2 .gz .xz,$(dist-version).tar$Z)
 466         md5sum $^
 467 else
 468 dist: dist-prepare
 469         @if v=`git describe`; then \
 470           echo Distribution version $$v; \
 471           $(MAKE) dist dist-version=$$v; \
 472         else \
 473           false; \
 474         fi
 475 endif
 476
 477 INSTALL: manual/install-plain.texi manual/macros.texi \
 478          $(common-objpfx)manual/pkgvers.texi manual/install.texi
 479         makeinfo --no-validate --plaintext --no-number-sections \
 480                  -I$(common-objpfx)manual $< -o $@-tmp
 481         $(AWK) 'NF == 0 { ++n; next } \
 482                 NF != 0 { while (n-- > 0) print ""; n = 0; print }' \
 483           < $@-tmp > $@-tmp2
 484         rm -f $@-tmp
 485         -chmod a-w $@-tmp2
 486         mv -f $@-tmp2 $@
 487 $(common-objpfx)manual/%: FORCE
 488         $(MAKE) $(PARALLELMFLAGS) -C manual $@
 489 FORCE:
 490
 491 iconvdata/% localedata/% po/%: FORCE
 492         $(MAKE) $(PARALLELMFLAGS) -C $(@D) $(@F)