Makefile

   1 # Copyright (C) 1991-2019 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   exit 1
 141 }
 142
 143 toolname=default
 144 while test $$# -gt 0 ; do
 145   case "$$1" in
 146     --tool=*)
 147       toolname="$${1:7}"
 148       shift
 149       ;;
 150     --*)
 151       usage
 152       ;;
 153     *)
 154       break
 155       ;;
 156   esac
 157 done
 158
 159 if test $$# -eq 0 ; then
 160   usage
 161 fi
 162
 163 case "$$toolname" in
 164   default)
 165     exec $(subst $(common-objdir),"$${builddir}", $(test-program-prefix)) \
 166       $${1+"$$@"}
 167     ;;
 168   strace)
 169     exec strace $(patsubst %, -E%, $(run-program-env)) \
 170       $(test-via-rtld-prefix) $${1+"$$@"}
 171     ;;
 172   valgrind)
 173     exec env $(run-program-env) valgrind $(test-via-rtld-prefix) $${1+"$$@"}
 174     ;;
 175   *)
 176     usage
 177     ;;
 178 esac
 179 endef
 180
 181 # This is a handy script for running any dynamically linked program against
 182 # the current libc build for testing.
 183 $(common-objpfx)testrun.sh: $(common-objpfx)config.make \
 184                             $(..)Makeconfig $(..)Makefile
 185         $(file >$@T,$(testrun-script))
 186         chmod a+x $@T
 187         mv -f $@T $@
 188 postclean-generated += testrun.sh
 189
 190 others: $(common-objpfx)testrun.sh
 191 \f
 192 # Makerules creates a file `stubs' in each subdirectory, which
 193 # contains `#define __stub_FUNCTION' for each function defined in that
 194 # directory which is a stub.
 195 # Here we paste all of these together into <gnu/stubs.h>.
 196
 197 subdir-stubs := $(foreach dir,$(subdirs),$(common-objpfx)$(dir)/stubs)
 198
 199 ifndef abi-variants
 200 installed-stubs = $(inst_includedir)/gnu/stubs.h
 201 else
 202 installed-stubs = $(inst_includedir)/gnu/stubs-$(default-abi).h
 203
 204 $(inst_includedir)/gnu/stubs.h: $(+force)
 205         $(make-target-directory)
 206         { \
 207          echo '/* This file is automatically generated.';\
 208          echo "   This file selects the right generated file of \`__stub_FUNCTION' macros";\
 209          echo '   based on the architecture being compiled for.  */'; \
 210          echo ''; \
 211          $(foreach h,$(abi-includes), echo '#include <$(h)>';) \
 212          echo ''; \
 213          $(foreach v,$(abi-variants),\
 214          $(if $(abi-$(v)-condition),\
 215          echo '#if $(abi-$(v)-condition)'; \
 216          echo '# include <gnu/stubs-$(v).h>'); \
 217          $(if $(abi-$(v)-condition),echo '#endif';) \
 218          rm -f $(@:.d=.h).new$(v); \
 219          ) \
 220         } > $(@:.d=.h).new
 221         mv -f $(@:.d=.h).new $(@:.d=.h)
 222
 223 install-others-nosubdir: $(installed-stubs)
 224 endif
 225
 226
 227 # Since stubs.h is never needed when building the library, we simplify the
 228 # hairy installation process by producing it in place only as the last part
 229 # of the top-level `make install'.  It depends on subdir_install, which
 230 # iterates over all the subdirs; subdir_install in each subdir depends on
 231 # the subdir's stubs file.  Having more direct dependencies would result in
 232 # extra iterations over the list for subdirs and many recursive makes.
 233 $(installed-stubs): include/stubs-prologue.h subdir_install
 234         $(make-target-directory)
 235         @rm -f $(objpfx)stubs.h
 236         (sed '/^@/d' $<; LC_ALL=C sort $(subdir-stubs)) > $(objpfx)stubs.h
 237         if test -r $@ && cmp -s $(objpfx)stubs.h $@; \
 238         then echo 'stubs.h unchanged'; \
 239         else $(INSTALL_DATA) $(objpfx)stubs.h $@; fi
 240         rm -f $(objpfx)stubs.h
 241 \f
 242 # This makes the Info or DVI file of the documentation from the Texinfo source.
 243 .PHONY: info dvi pdf html
 244 info dvi pdf html:
 245         $(MAKE) $(PARALLELMFLAGS) -C manual $@
 246 \f
 247 # This makes all the subdirectory targets.
 248
 249 # For each target, make it depend on DIR/target for each subdirectory DIR.
 250 $(+subdir_targets): %: $(addsuffix /%,$(subdirs))
 251
 252 # Compute a list of all those targets.
 253 all-subdirs-targets := $(foreach dir,$(subdirs),\
 254                                  $(addprefix $(dir)/,$(+subdir_targets)))
 255
 256 # The action for each of those is to cd into the directory and make the
 257 # target there.
 258 $(all-subdirs-targets):
 259         $(MAKE) $(PARALLELMFLAGS) $(subdir-target-args) $(@F)
 260
 261 define subdir-target-args
 262 subdir=$(@D)$(if $($(@D)-srcdir),\
 263 -C $($(@D)-srcdir) ..=`pwd`/,\
 264 -C $(@D) ..=../)
 265 endef
 266
 267 .PHONY: $(+subdir_targets) $(all-subdirs-targets)
 268 \f
 269 # Targets to clean things up to various degrees.
 270
 271 .PHONY: clean realclean distclean distclean-1 parent-clean parent-mostlyclean \
 272         tests-clean
 273
 274 # Subroutines of all cleaning targets.
 275 parent-mostlyclean: common-mostlyclean # common-mostlyclean is in Makerules.
 276         -rm -f $(foreach o,$(object-suffixes-for-libc),\
 277                    $(common-objpfx)$(patsubst %,$(libtype$o),c)) \
 278                $(addprefix $(objpfx),$(install-lib))
 279 parent-clean: parent-mostlyclean common-clean
 280
 281 postclean = $(addprefix $(common-objpfx),$(postclean-generated)) \
 282             $(addprefix $(objpfx),sysd-dirs sysd-rules) \
 283             $(addprefix $(objpfx),sysd-sorted soversions.mk soversions.i)
 284
 285 clean: parent-clean
 286 # This is done this way rather than having `subdir_clean' be a
 287 # dependency of this target so that libc.a will be removed before the
 288 # subdirectories are dealt with and so they won't try to remove object
 289 # files from it when it's going to be removed anyway.
 290         @$(MAKE) subdir_clean no_deps=t
 291         -rm -f $(postclean)
 292 mostlyclean: parent-mostlyclean
 293         @$(MAKE) subdir_mostlyclean no_deps=t
 294         -rm -f $(postclean)
 295
 296 tests-clean:
 297         @$(MAKE) subdir_testclean no_deps=t
 298
 299 ifneq (,$(CXX))
 300 vpath c++-types.data $(+sysdep_dirs)
 301
 302 tests-special += $(objpfx)c++-types-check.out
 303 $(objpfx)c++-types-check.out: c++-types.data scripts/check-c++-types.sh
 304         scripts/check-c++-types.sh $< $(CXX) $(filter-out -std=gnu11 $(+gccwarn-c),$(CFLAGS)) $(CPPFLAGS) > $@; \
 305         $(evaluate-test)
 306 endif
 307
 308 tests-special += $(objpfx)check-local-headers.out
 309 $(objpfx)check-local-headers.out: scripts/check-local-headers.sh
 310         AWK='$(AWK)' scripts/check-local-headers.sh \
 311           "$(includedir)" "$(objpfx)" < /dev/null > $@; \
 312         $(evaluate-test)
 313
 314 ifneq "$(headers)" ""
 315 # Special test of all the installed headers in this directory.
 316 tests-special += $(objpfx)check-installed-headers-c.out
 317 libof-check-installed-headers-c := testsuite
 318 $(objpfx)check-installed-headers-c.out: \
 319     scripts/check-installed-headers.sh $(headers)
 320         $(SHELL) $(..)scripts/check-installed-headers.sh c \
 321           "$(CC) $(filter-out -std=%,$(CFLAGS)) -D_ISOMAC $(+includes)" \
 322           $(headers) > $@; \
 323         $(evaluate-test)
 324
 325 ifneq "$(CXX)" ""
 326 tests-special += $(objpfx)check-installed-headers-cxx.out
 327 libof-check-installed-headers-cxx := testsuite
 328 $(objpfx)check-installed-headers-cxx.out: \
 329     scripts/check-installed-headers.sh $(headers)
 330         $(SHELL) $(..)scripts/check-installed-headers.sh c++ \
 331           "$(CXX) $(filter-out -std=%,$(CXXFLAGS)) -D_ISOMAC $(+includes)" \
 332           $(headers) > $@; \
 333         $(evaluate-test)
 334 endif # $(CXX)
 335
 336 tests-special += $(objpfx)check-wrapper-headers.out
 337 $(objpfx)check-wrapper-headers.out: scripts/check-wrapper-headers.py $(headers)
 338         $(PYTHON) $< --root=. --subdir=. $(headers) \
 339           --generated $(common-generated) > $@; $(evaluate-test)
 340 endif # $(headers)
 341
 342 define summarize-tests
 343 @egrep -v '^(PASS|XFAIL):' $(objpfx)$1 || true
 344 @echo "Summary of test results$2:"
 345 @sed 's/:.*//' < $(objpfx)$1 | sort | uniq -c
 346 @! egrep -q -v '^(X?PASS|XFAIL|UNSUPPORTED):' $(objpfx)$1
 347 endef
 348
 349 # The intention here is to do ONE install of our build into the
 350 # testroot.pristine/ directory, then rsync (internal to
 351 # support/test-container) that to testroot.root/ at the start of each
 352 # test.  That way we can promise each test a "clean" install, without
 353 # having to do the install for each test.
 354 #
 355 # In addition, we have to copy some files (which we build) into this
 356 # root in addition to what glibc installs.  For example, many tests
 357 # require additional programs including /bin/sh, /bin/true, and
 358 # /bin/echo, all of which we build below to limit library dependencies
 359 # to just those things in glibc and language support libraries which
 360 # we also copy into the into the rootfs.  To determine what language
 361 # support libraries we need we build a "test" program in either C or
 362 # (if available) C++ just so we can copy in any shared objects
 363 # (which we do not build) that GCC-compiled programs depend on.
 364
 365
 366 ifeq (,$(CXX))
 367 LINKS_DSO_PROGRAM = links-dso-program-c
 368 else
 369 LINKS_DSO_PROGRAM = links-dso-program
 370 endif
 371
 372 $(tests-container) $(addsuffix /tests,$(subdirs)) : \
 373                 $(objpfx)testroot.pristine/install.stamp
 374 $(objpfx)testroot.pristine/install.stamp :
 375         test -d $(objpfx)testroot.pristine || \
 376           mkdir $(objpfx)testroot.pristine
 377         # We need a working /bin/sh for some of the tests.
 378         test -d $(objpfx)testroot.pristine/bin || \
 379           mkdir $(objpfx)testroot.pristine/bin
 380         cp $(objpfx)support/shell-container $(objpfx)testroot.pristine/bin/sh
 381         cp $(objpfx)support/echo-container $(objpfx)testroot.pristine/bin/echo
 382         cp $(objpfx)support/true-container $(objpfx)testroot.pristine/bin/true
 383 ifeq ($(run-built-tests),yes)
 384         # Copy these DSOs first so we can overwrite them with our own.
 385         for dso in `$(test-wrapper-env) LD_TRACE_LOADED_OBJECTS=1  \
 386                 $(objpfx)elf/$(rtld-installed-name) \
 387                 $(objpfx)testroot.pristine/bin/sh \
 388                 | grep / | sed 's/^[^/]*//' | sed 's/ .*//'` ;\
 389           do \
 390             test -d `dirname $(objpfx)testroot.pristine$$dso` || \
 391               mkdir -p `dirname $(objpfx)testroot.pristine$$dso` ;\
 392             $(test-wrapper) cp $$dso $(objpfx)testroot.pristine$$dso ;\
 393           done
 394         for dso in `$(test-wrapper-env) LD_TRACE_LOADED_OBJECTS=1  \
 395                 $(objpfx)elf/$(rtld-installed-name) \
 396                 $(objpfx)support/$(LINKS_DSO_PROGRAM) \
 397                 | grep / | sed 's/^[^/]*//' | sed 's/ .*//'` ;\
 398           do \
 399             test -d `dirname $(objpfx)testroot.pristine$$dso` || \
 400               mkdir -p `dirname $(objpfx)testroot.pristine$$dso` ;\
 401             $(test-wrapper) cp $$dso $(objpfx)testroot.pristine$$dso ;\
 402           done
 403 endif
 404         $(MAKE) install DESTDIR=$(objpfx)testroot.pristine
 405         touch $(objpfx)testroot.pristine/install.stamp
 406
 407 tests-special-notdir = $(patsubst $(objpfx)%, %, $(tests-special))
 408 tests: $(tests-special)
 409         $(..)scripts/merge-test-results.sh -s $(objpfx) "" \
 410           $(sort $(tests-special-notdir:.out=)) \
 411           > $(objpfx)subdir-tests.sum
 412         $(..)scripts/merge-test-results.sh -t $(objpfx) subdir-tests.sum \
 413           $(sort $(subdirs) .) \
 414           > $(objpfx)tests.sum
 415         $(call summarize-tests,tests.sum)
 416 xtests:
 417         $(..)scripts/merge-test-results.sh -t $(objpfx) subdir-xtests.sum \
 418           $(sort $(subdirs)) \
 419           > $(objpfx)xtests.sum
 420         $(call summarize-tests,xtests.sum, for extra tests)
 421
 422 # The realclean target is just like distclean for the parent, but we want
 423 # the subdirs to know the difference in case they care.
 424 realclean distclean: parent-clean
 425 # This is done this way rather than having `subdir_distclean' be a
 426 # dependency of this target so that libc.a will be removed before the
 427 # subdirectories are dealt with and so they won't try to remove object
 428 # files from it when it's going to be removed anyway.
 429         @$(MAKE) distclean-1 no_deps=t distclean-1=$@ avoid-generated=yes \
 430                  sysdep-subdirs="$(sysdep-subdirs)"
 431         -rm -f $(postclean)
 432
 433 # Subroutine of distclean and realclean.
 434 distclean-1: subdir_$(distclean-1)
 435         -rm -f $(config-generated)
 436         -rm -f $(addprefix $(objpfx),config.status config.cache config.log)
 437         -rm -f $(addprefix $(objpfx),config.make config-name.h config.h)
 438 ifdef objdir
 439         -rm -f $(objpfx)Makefile
 440 endif
 441         -rm -f $(sysdep-$(distclean-1))
 442 \f
 443 # Make the TAGS file for Emacs users.
 444
 445 .PHONY: TAGS
 446 TAGS:
 447         scripts/list-sources.sh | sed -n -e '/Makefile/p' \
 448           $(foreach S,[chsSyl] cxx sh bash pl,\
 449                     $(subst .,\.,-e '/.$S\(.in\)*$$/p')) \
 450         | $(ETAGS) -o $@ -
 451 \f
 452 # Make the distribution tarfile.
 453 .PHONY: dist dist-prepare
 454
 455 generated := $(generated) stubs.h
 456
 457 files-for-dist := README INSTALL configure ChangeLog NEWS
 458
 459 # Regenerate stuff, then error if these things are not committed yet.
 460 dist-prepare: $(files-for-dist)
 461         conf=`find sysdeps -name configure`; \
 462         $(MAKE) $$conf && \
 463         git diff --stat HEAD -- $^ $$conf \
 464         | $(AWK) '{ print; rc=1 } END { exit rc }'
 465
 466 %.tar: FORCE
 467         git archive --prefix=$*/ $* > $@.new
 468         mv -f $@.new $@
 469
 470 # Do `make dist dist-version=X.Y.Z' to make tar files of an older version.
 471
 472 ifneq (,$(strip $(dist-version)))
 473 dist: $(foreach Z,.bz2 .gz .xz,$(dist-version).tar$Z)
 474         md5sum $^
 475 else
 476 dist: dist-prepare
 477         @if v=`git describe`; then \
 478           echo Distribution version $$v; \
 479           $(MAKE) dist dist-version=$$v; \
 480         else \
 481           false; \
 482         fi
 483 endif
 484
 485 INSTALL: manual/install-plain.texi manual/macros.texi \
 486          $(common-objpfx)manual/pkgvers.texi manual/install.texi
 487         makeinfo --no-validate --plaintext --no-number-sections \
 488                  -I$(common-objpfx)manual $< -o $@-tmp
 489         $(AWK) 'NF == 0 { ++n; next } \
 490                 NF != 0 { while (n-- > 0) print ""; n = 0; print }' \
 491           < $@-tmp > $@-tmp2
 492         rm -f $@-tmp
 493         -chmod a-w $@-tmp2
 494         mv -f $@-tmp2 $@
 495 $(common-objpfx)manual/%: FORCE
 496         $(MAKE) $(PARALLELMFLAGS) -C manual $@
 497 FORCE:
 498
 499 iconvdata/% localedata/% po/%: FORCE
 500         $(MAKE) $(PARALLELMFLAGS) -C $(@D) $(@F)