t/ax/depcomp.sh - automake - Git at Google

 #! /bin/sh
 # Copyright (C) 2012-2018 Free Software Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2, or (at your option)
 # any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.

 # Check dependency tracking in various flavours.
 # Contains both libtool and non-libtool case.
 # Sourced by the various (autogenerated) 'depcomp*.tap' tests.
 # Examples of reported failures that motivated those test are
 # listed below.

 # -------------------------------------------------------------------------

 # <https://lists.gnu.org/archive/html/automake-patches/2011-04/msg00028.html>
 #
 # Here's the bug: makedepend will prefix VPATH to the object file name,
 # thus the second make will invoke depcomp with object='../../src/foo.o',
 # causing errors such as:
 #
 #  touch: cannot touch '../../src/.deps/foo.TPo': No such file or directory
 #  makedepend: error:  cannot open "../../src/.deps/foo.TPo"
 #  ../../depcomp: line 560: ../../src/.deps/foo.TPo: No such file or directory

 # -------------------------------------------------------------------------

 # <https://debbugs.gnu.org/cgi/bugreport.cgi?bug=8473>
 # <https://lists.gnu.org/archive/html/automake-patches/2011-04/msg00079.html>
 #
 # Here's the bug: hp depmode will prefix VPATH to the object file name,
 # thus the second gmake will invoke depcomp with object='../../src/foo.o',
 # causing errors such as (broken on multiple lines for clarity):
 #
 #   cpp: "", line 0: error 4066: Cannot create
 #        "../../gllib/.deps/nonblocking.TPo" file for
 #        "-M../../gllib/.deps/nonblocking.TPo" option.
 #        (No such file or directory[errno=2])
 #

 # -------------------------------------------------------------------------

 # <https://lists.gnu.org/archive/html/automake-patches/2011-04/msg00140.html>
 # <https://lists.gnu.org/archive/html/automake-patches/2011-05/msg00019.html>
 #
 # A partial failure of an earlier version of this test; some bad
 # post-processing of the '*.Po' files led to the following broken
 # contents of 'src/sub/.deps/subfoo.Po':
 #
 #  > sub/subfoo.o: ../../depmod-data.dir/src/sub/subfoo.c \
 #  >   ../../depmod-data.dir/src/foo.h
 #  > ../../depmod-data.dir/src/sub/subfoo.c \:
 #  >   ../../depmod-data.dir/src/foo.h:
 #
 # which caused make to die with an error like:
 #
 #  "sub/.deps/subfoo.Po:3: *** missing separator.  Stop."

 # -------------------------------------------------------------------------

 # This code expects test-init.sh has already been included in advance.

 ocwd=$(pwd) || fatal_ "getting current working directory"
 longpath=this-is/a-path/which-has/quite-a/definitely/truly/long_long_name
 cachevar=am_cv_CC_dependencies_compiler_type

 srctree=depmod-1.0
 mkdir $srctree
 cd $srctree

 cd_top ()
 {
   cd "$ocwd" || fatal_ "cannot chdir back to top directory"
 }

 delete ()
 {
   test -f "$1" || fatal_ "$1: file does not exist"
   rm -f "$1" || fatal_ "$1: couldn't remove"
 }

 edit ()
 {
   file=$1; shift
   sed "$@" <"$file" > t && mv -f t "$file" \
     || fatal_ "$file: editing of file failed"
 }

 rewrite ()
 {
   file=$1; shift
   "$@" > "$file" || fatal_ "$file: couldn't rewrite"
 }

 setup_srcdir ()
 {
   srcdir=$1 # This is intended to be global.
   mkdir -p "$srcdir" \
     || fatal_ "couldn't create source directory '$srcdir'"
   cp -pR "$ocwd/$srctree"/* "$srcdir"/ \
     || fatal_ "couldn't populate source directory '$srcdir'"
 }


 check_no_depfiles ()
 {
   find . -name '*.Plo' -o -name '*.Po' | grep . && return 1
   return 0
 }

 check_distclean ()
 {
   # "make distcleancheck" can only run from a VPATH build.
   if test $vpath = no; then
     make_ok distclean && check_no_depfiles
   else
     $MAKE distcleancheck
   fi
 }

 cat > configure.ac <<END
 AC_INIT([$me], [1.0])
 AC_CONFIG_AUX_DIR([build-aux])
 AM_INIT_AUTOMAKE([subdir-objects])
 AC_PROG_CC
 AM_PROG_AR
 $(if test $depcomp_with_libtool = yes; then
     echo AC_PROG_LIBTOOL
   else
     echo AC_PROG_RANLIB
   fi)
 AC_CONFIG_FILES([Makefile src/Makefile])
 AC_OUTPUT
 END

 mkdir build-aux sub src src/sub2

 case $depcomp_with_libtool in
   yes)
     po=Plo objext=lo a=la
     normalized_target=libfoo_la
     # On platforms requiring that no undefined symbols exist in order
     # to build shared libraries (e.g. Windows DLLs), you have to
     # explicitly declare that the libtool library you are building
     # does not actually have any undefined symbols, for libtool to
     # even try to build it as a shared library.  Without that
     # explicit declaration, libtool falls back to a static library
     # only, regardless of any --enable-shared flags etc.
     LIBPRIMARY=LTLIBRARIES LINKADD=LIBADD NOUNDEF=-no-undefined
     libbaz_ldflags="libbaz_${a}_LDFLAGS = $NOUNDEF"
     echo lib_LTLIBRARIES = libfoo.la >> Makefile.am
     make_ok ()
     {
       run_make -M -- ${1+"$@"}
       $FGREP 'unknown directive' output && return 1
       rm -f output
       # Checks for stray files possibly left around by less common
       # depmodes.
       find . -name '*.[ud]' | grep . && return 1
       return 0
     }
     ;;
   no)
     po=Po objext='$(OBJEXT)' a=a
     normalized_target=foo
     LIBPRIMARY=LIBRARIES LINKADD=LDADD NOUNDEF=
     libbaz_ldflags=
     echo bin_PROGRAMS = foo >> Makefile.am
     make_ok ()
     {
       $MAKE ${1+"$@"}
     }
     ;;
   *)
     fatal_ "invalid value '$depcomp_with_libtool' for variable" \
            "\$depcomp_with_libtool"
     ;;
 esac

 cat >> Makefile.am <<END
 SUBDIRS = src
 # We include subfoo only to be sure that the munging in depcomp
 # doesn't remove too much from the object file name.
 ${normalized_target}_SOURCES = foo.c sub/subfoo.c foo.h sub/subfoo.h
 ${normalized_target}_LDFLAGS = $NOUNDEF
 ${normalized_target}_${LINKADD} = src/libbaz.$a

 .PHONY: grep-test
 grep-test:
 ## For debugging.
 	cat \$(DEPDIR)/foo.$po || :
 	cat sub/\$(DEPDIR)/subfoo.$po || :
 	cat src/\$(DEPDIR)/baz.$po || :
 	cat src/sub2/\$(DEPDIR)/sub2foo.$po || :
 ## Checks are done here.
 	grep '^foo.$objext.*:' \$(DEPDIR)/foo.$po
 	grep '^sub/subfoo\.$objext.*:' sub/\$(DEPDIR)/subfoo.$po
 	grep '^baz\.$objext.*:' src/\$(DEPDIR)/baz.$po
 	grep '^sub2/sub2foo\.$objext.*:' src/sub2/\$(DEPDIR)/sub2foo.$po
 END

 cat > src/Makefile.am <<END
 noinst_${LIBPRIMARY} = libbaz.$a
 # We include sub2foo only to be sure that the munging in depcomp
 # doesn't remove too much from the object file name.
 libbaz_${a}_SOURCES = baz.c sub2/sub2foo.c baz.h sub2/sub2foo.h
 $libbaz_ldflags
 END

 cat > foo.c <<'END'
 #include "foo.h"
 #include "src/baz.h"
 #include <stdlib.h>
 int main (void)
 {
   printf ("foo bar\n");
   exit (EXIT_SUCCESS + subfoo () + baz ());
 }
 END

 cat > foo.h <<'END'
 #include <stdio.h>
 #include "sub/subfoo.h"
 END

 cat > sub/subfoo.c <<'END'
 #include "sub/subfoo.h"
 int subfoo (void) { return 0; }
 END

 echo '/* empty */' > src/sub2/sub2foo.h

 cat > sub/subfoo.h <<'END'
 #include <stdio.h>
 extern int subfoo (void);
 END

 cat > src/baz.c <<'END'
 #include "baz.h"
 int baz (void) { return 0; }
 END

 cat > src/baz.h <<'END'
 extern int baz (void);
 END

 cat > src/sub2/sub2foo.c <<'END'
 #include "sub2foo.h"
 int sub2foo (void) { return 0; }
 END

 test $depcomp_with_libtool = no || libtoolize \
   || fatal_ "libtoolize failed"
 $ACLOCAL && $AUTOCONF && $AUTOMAKE -a \
   || fatal_ "autotools failed"
 test -f build-aux/depcomp \
   || fatal_ "depcomp script not installed"

 # To offer extra coverage for the depmodes (like "aix" of "hp2") where the
 # name of the compiler-generated depfiles can depend on whether libtool is
 # in use *and* on which kind of libraries libtool is building (static,
 # shared, or both), we would like to run the libtool-oriented tests thrice:
 # once after having run configure with the '--disable-shared' option, once
 # after having run it with the '--enable-shared' options, and once by
 # leaving it to configure to automatically select which kind of library (or
 # libraries) to build.
 #
 # But doing such three-fold checks unconditionally for all the depmodes
 # would slow down the already too slow libtool tests unacceptably (up to a
 # 150-200% factor), with no real gain in coverage for most of the depmodes.
 # So, since the depmodes that would benefit from the extra tests are never
 # forced to configure in out tests below, but can only be automatically
 # selected by '--enable-dependency-tracking', we make this threefold check
 # only in this later case.

 if test $depmode,$depcomp_with_libtool = auto,yes; then
   do_all_tests ()
   {
     do_test default
     do_test noshared --disable-shared
     do_test nostatic --disable-static
   }
 else
   do_all_tests () { do_test; }
 fi

 case $depmode in
   auto)
     displayed_depmode='..*' # At least one character long.
     cfg_deptrack=--enable-dependency-tracking ;;
   disabled)
     displayed_depmode=none
     cfg_deptrack=--disable-dependency-tracking ;;
   *)
     displayed_depmode="(cached) $depmode"
     cfg_deptrack="$cachevar=$depmode"
     # Sanity check: ensure the cache variable we force is truly
     # used by configure.
     $FGREP $cachevar configure \
       || fatal_ "configure lacks required cache variable '$cachevar'";;
 esac

 cd_top

 do_test ()
 {
   cd_top
   if test $vpath = no; then
     pfx="in-tree build"
   else
     pfx="$vpath VPATH"
   fi
   if test $# -gt 0; then
     subdir=$1; shift
     pfx="$pfx, $subdir"
     test -d $subdir || mkdir $subdir || fatal_ "creating directory $subdir"
     cd $subdir
   fi
   pfx="[$pfx]"
   case $vpath in
     simple)
       mkdir -p vpath-simple/build
       cd vpath-simple/build
       setup_srcdir ..
       ;;
     long)
       mkdir -p vpath-long/src vpath-long/wrk
       cd vpath-long/wrk
       setup_srcdir ../src/$longpath
       ;;
     absolute)
       mkdir -p vpath-abs/build
       cd vpath-abs/build
       absdir=$(cd .. && pwd) || fatal_ "getting absolute directory"
       setup_srcdir "$absdir/vpath-abs"
       unset absdir
       ;;
     no)
       mkdir intree
       cd intree
       setup_srcdir .
       ;;
     *)
       fatal_ "invalid value '$vpath' for variable \$vpath"
       ;;
   esac

   command_ok_ \
     "$pfx configure" \
     "$srcdir/configure" $cfg_deptrack ${1+"$@"} >stdout
   cat stdout

   command_ok_ \
     "$pfx right depmode selected" \
     grep "^checking dependency style .*\.\.\. $displayed_depmode$" stdout
   rm -f stdout

   command_ok_ "$pfx simple make" make_ok
   # Some bugs in VPATH builds only kick in during a rebuild.
   command_ok_ "$pfx clean & rebuild" eval '$MAKE clean && make_ok'

   if test $depmode = disabled; then
       command_ok_ "$pfx no dependency files generated" check_no_depfiles
       r=ok \
         && grep "[ $tab]depmode=none" Makefile \
         && rewrite "$srcdir"/src/sub2/sub2foo.h echo 'choke me' \
         && delete "$srcdir"/sub/subfoo.h \
         && make_ok \
         || r='not ok'
       result_ "$r" "$pfx dependency tracking is truly disabled"
   elif grep "[ $tab]depmode=none" Makefile; then
     skip_row_ 2 -r "automatic dependency tracking couldn't be activated"
   else
     command_ok_ "$pfx generated $po files look correct" $MAKE grep-test
     r=ok \
       && : "Some checks in the subdir." \
       && $sleep \
       && : "Ensure rebuild rules really kick in." \
       && rewrite "$srcdir"/src/sub2/sub2foo.h echo 'choke me' \
       && cd src \
       && not $MAKE  \
       && cd .. \
       && : "Ensure the deleted header bug is fixed." \
       && delete "$srcdir"/src/sub2/sub2foo.h \
       && edit "$srcdir"/src/sub2/sub2foo.c -e 1d \
       && cd src \
       && make_ok \
       && : "Now do similar checks for the parent directory." \
       && cd .. \
       && rewrite "$srcdir"/sub/subfoo.h echo 'choke me' \
       && not $MAKE \
       && delete "$srcdir"/sub/subfoo.h \
       && edit "$srcdir"/sub/subfoo.c -e 1d \
       && edit "$srcdir"/foo.h -e 2d \
       && make_ok \
       || r='not ok'
     result_ "$r" "$pfx dependency tracking works"
   fi

   command_ok_ "$pfx make distclean" check_distclean
   cd_top
 }

 for vpath in no simple long absolute; do
   do_all_tests
 done

 :
	#! /bin/sh
	# Copyright (C) 2012-2018 Free Software Foundation, Inc.
	#
	# This program is free software; you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation; either version 2, or (at your option)
	# any later version.
	#
	# This program is distributed in the hope that it will be useful,
	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	# GNU General Public License for more details.
	#
	# You should have received a copy of the GNU General Public License
	# along with this program. If not, see <https://www.gnu.org/licenses/>.

	# Check dependency tracking in various flavours.
	# Contains both libtool and non-libtool case.
	# Sourced by the various (autogenerated) 'depcomp*.tap' tests.
	# Examples of reported failures that motivated those test are
	# listed below.

	# -------------------------------------------------------------------------

	# <https://lists.gnu.org/archive/html/automake-patches/2011-04/msg00028.html>
	#
	# Here's the bug: makedepend will prefix VPATH to the object file name,
	# thus the second make will invoke depcomp with object='../../src/foo.o',
	# causing errors such as:
	#
	# touch: cannot touch '../../src/.deps/foo.TPo': No such file or directory
	# makedepend: error: cannot open "../../src/.deps/foo.TPo"
	# ../../depcomp: line 560: ../../src/.deps/foo.TPo: No such file or directory

	# -------------------------------------------------------------------------

	# <https://debbugs.gnu.org/cgi/bugreport.cgi?bug=8473>
	# <https://lists.gnu.org/archive/html/automake-patches/2011-04/msg00079.html>
	#
	# Here's the bug: hp depmode will prefix VPATH to the object file name,
	# thus the second gmake will invoke depcomp with object='../../src/foo.o',
	# causing errors such as (broken on multiple lines for clarity):
	#
	# cpp: "", line 0: error 4066: Cannot create
	# "../../gllib/.deps/nonblocking.TPo" file for
	# "-M../../gllib/.deps/nonblocking.TPo" option.
	# (No such file or directory[errno=2])
	#

	# -------------------------------------------------------------------------

	# <https://lists.gnu.org/archive/html/automake-patches/2011-04/msg00140.html>
	# <https://lists.gnu.org/archive/html/automake-patches/2011-05/msg00019.html>
	#
	# A partial failure of an earlier version of this test; some bad
	# post-processing of the '*.Po' files led to the following broken
	# contents of 'src/sub/.deps/subfoo.Po':
	#
	# > sub/subfoo.o: ../../depmod-data.dir/src/sub/subfoo.c \
	# > ../../depmod-data.dir/src/foo.h
	# > ../../depmod-data.dir/src/sub/subfoo.c \:
	# > ../../depmod-data.dir/src/foo.h:
	#
	# which caused make to die with an error like:
	#
	# "sub/.deps/subfoo.Po:3: *** missing separator. Stop."

	# -------------------------------------------------------------------------

	# This code expects test-init.sh has already been included in advance.

	ocwd=$(pwd) \|\| fatal_ "getting current working directory"
	longpath=this-is/a-path/which-has/quite-a/definitely/truly/long_long_name
	cachevar=am_cv_CC_dependencies_compiler_type

	srctree=depmod-1.0
	mkdir $srctree
	cd $srctree

	cd_top ()
	{
	cd "$ocwd" \|\| fatal_ "cannot chdir back to top directory"
	}

	delete ()
	{
	test -f "$1" \|\| fatal_ "$1: file does not exist"
	rm -f "$1" \|\| fatal_ "$1: couldn't remove"
	}

	edit ()
	{
	file=$1; shift
	sed "$@" <"$file" > t && mv -f t "$file" \
	\|\| fatal_ "$file: editing of file failed"
	}

	rewrite ()
	{
	file=$1; shift
	"$@" > "$file" \|\| fatal_ "$file: couldn't rewrite"
	}

	setup_srcdir ()
	{
	srcdir=$1 # This is intended to be global.
	mkdir -p "$srcdir" \
	\|\| fatal_ "couldn't create source directory '$srcdir'"
	cp -pR "$ocwd/$srctree"/* "$srcdir"/ \
	\|\| fatal_ "couldn't populate source directory '$srcdir'"
	}


	check_no_depfiles ()
	{
	find . -name '.Plo' -o -name '.Po' \| grep . && return 1
	return 0
	}

	check_distclean ()
	{
	# "make distcleancheck" can only run from a VPATH build.
	if test $vpath = no; then
	make_ok distclean && check_no_depfiles
	else
	$MAKE distcleancheck
	fi
	}

	cat > configure.ac <<END
	AC_INIT([$me], [1.0])
	AC_CONFIG_AUX_DIR([build-aux])
	AM_INIT_AUTOMAKE([subdir-objects])
	AC_PROG_CC
	AM_PROG_AR
	$(if test $depcomp_with_libtool = yes; then
	echo AC_PROG_LIBTOOL
	else
	echo AC_PROG_RANLIB
	fi)
	AC_CONFIG_FILES([Makefile src/Makefile])
	AC_OUTPUT
	END

	mkdir build-aux sub src src/sub2

	case $depcomp_with_libtool in
	yes)
	po=Plo objext=lo a=la
	normalized_target=libfoo_la
	# On platforms requiring that no undefined symbols exist in order
	# to build shared libraries (e.g. Windows DLLs), you have to
	# explicitly declare that the libtool library you are building
	# does not actually have any undefined symbols, for libtool to
	# even try to build it as a shared library. Without that
	# explicit declaration, libtool falls back to a static library
	# only, regardless of any --enable-shared flags etc.
	LIBPRIMARY=LTLIBRARIES LINKADD=LIBADD NOUNDEF=-no-undefined
	libbaz_ldflags="libbaz_${a}_LDFLAGS = $NOUNDEF"
	echo lib_LTLIBRARIES = libfoo.la >> Makefile.am
	make_ok ()
	{
	run_make -M -- ${1+"$@"}
	$FGREP 'unknown directive' output && return 1
	rm -f output
	# Checks for stray files possibly left around by less common
	# depmodes.
	find . -name '*.[ud]' \| grep . && return 1
	return 0
	}
	;;
	no)
	po=Po objext='$(OBJEXT)' a=a
	normalized_target=foo
	LIBPRIMARY=LIBRARIES LINKADD=LDADD NOUNDEF=
	libbaz_ldflags=
	echo bin_PROGRAMS = foo >> Makefile.am
	make_ok ()
	{
	$MAKE ${1+"$@"}
	}
	;;
	*)
	fatal_ "invalid value '$depcomp_with_libtool' for variable" \
	"\$depcomp_with_libtool"
	;;
	esac

	cat >> Makefile.am <<END
	SUBDIRS = src
	# We include subfoo only to be sure that the munging in depcomp
	# doesn't remove too much from the object file name.
	${normalized_target}_SOURCES = foo.c sub/subfoo.c foo.h sub/subfoo.h
	${normalized_target}_LDFLAGS = $NOUNDEF
	${normalized_target}_${LINKADD} = src/libbaz.$a

	.PHONY: grep-test
	grep-test:
	## For debugging.
	cat \$(DEPDIR)/foo.$po \|\| :
	cat sub/\$(DEPDIR)/subfoo.$po \|\| :
	cat src/\$(DEPDIR)/baz.$po \|\| :
	cat src/sub2/\$(DEPDIR)/sub2foo.$po \|\| :
	## Checks are done here.
	grep '^foo.$objext.*:' \$(DEPDIR)/foo.$po
	grep '^sub/subfoo\.$objext.*:' sub/\$(DEPDIR)/subfoo.$po
	grep '^baz\.$objext.*:' src/\$(DEPDIR)/baz.$po
	grep '^sub2/sub2foo\.$objext.*:' src/sub2/\$(DEPDIR)/sub2foo.$po
	END

	cat > src/Makefile.am <<END
	noinst_${LIBPRIMARY} = libbaz.$a
	# We include sub2foo only to be sure that the munging in depcomp
	# doesn't remove too much from the object file name.
	libbaz_${a}_SOURCES = baz.c sub2/sub2foo.c baz.h sub2/sub2foo.h
	$libbaz_ldflags
	END

	cat > foo.c <<'END'
	#include "foo.h"
	#include "src/baz.h"
	#include <stdlib.h>
	int main (void)
	{
	printf ("foo bar\n");
	exit (EXIT_SUCCESS + subfoo () + baz ());
	}
	END

	cat > foo.h <<'END'
	#include <stdio.h>
	#include "sub/subfoo.h"
	END

	cat > sub/subfoo.c <<'END'
	#include "sub/subfoo.h"
	int subfoo (void) { return 0; }
	END

	echo '/* empty */' > src/sub2/sub2foo.h

	cat > sub/subfoo.h <<'END'
	#include <stdio.h>
	extern int subfoo (void);
	END

	cat > src/baz.c <<'END'
	#include "baz.h"
	int baz (void) { return 0; }
	END

	cat > src/baz.h <<'END'
	extern int baz (void);
	END

	cat > src/sub2/sub2foo.c <<'END'
	#include "sub2foo.h"
	int sub2foo (void) { return 0; }
	END

	test $depcomp_with_libtool = no \|\| libtoolize \
	\|\| fatal_ "libtoolize failed"
	$ACLOCAL && $AUTOCONF && $AUTOMAKE -a \
	\|\| fatal_ "autotools failed"
	test -f build-aux/depcomp \
	\|\| fatal_ "depcomp script not installed"

	# To offer extra coverage for the depmodes (like "aix" of "hp2") where the
	# name of the compiler-generated depfiles can depend on whether libtool is
	# in use and on which kind of libraries libtool is building (static,
	# shared, or both), we would like to run the libtool-oriented tests thrice:
	# once after having run configure with the '--disable-shared' option, once
	# after having run it with the '--enable-shared' options, and once by
	# leaving it to configure to automatically select which kind of library (or
	# libraries) to build.
	#
	# But doing such three-fold checks unconditionally for all the depmodes
	# would slow down the already too slow libtool tests unacceptably (up to a
	# 150-200% factor), with no real gain in coverage for most of the depmodes.
	# So, since the depmodes that would benefit from the extra tests are never
	# forced to configure in out tests below, but can only be automatically
	# selected by '--enable-dependency-tracking', we make this threefold check
	# only in this later case.

	if test $depmode,$depcomp_with_libtool = auto,yes; then
	do_all_tests ()
	{
	do_test default
	do_test noshared --disable-shared
	do_test nostatic --disable-static
	}
	else
	do_all_tests () { do_test; }
	fi

	case $depmode in
	auto)
	displayed_depmode='..*' # At least one character long.
	cfg_deptrack=--enable-dependency-tracking ;;
	disabled)
	displayed_depmode=none
	cfg_deptrack=--disable-dependency-tracking ;;
	*)
	displayed_depmode="(cached) $depmode"
	cfg_deptrack="$cachevar=$depmode"
	# Sanity check: ensure the cache variable we force is truly
	# used by configure.
	$FGREP $cachevar configure \
	\|\| fatal_ "configure lacks required cache variable '$cachevar'";;
	esac

	cd_top

	do_test ()
	{
	cd_top
	if test $vpath = no; then
	pfx="in-tree build"
	else
	pfx="$vpath VPATH"
	fi
	if test $# -gt 0; then
	subdir=$1; shift
	pfx="$pfx, $subdir"
	test -d $subdir \|\| mkdir $subdir \|\| fatal_ "creating directory $subdir"
	cd $subdir
	fi
	pfx="[$pfx]"
	case $vpath in
	simple)
	mkdir -p vpath-simple/build
	cd vpath-simple/build
	setup_srcdir ..
	;;
	long)
	mkdir -p vpath-long/src vpath-long/wrk
	cd vpath-long/wrk
	setup_srcdir ../src/$longpath
	;;
	absolute)
	mkdir -p vpath-abs/build
	cd vpath-abs/build
	absdir=$(cd .. && pwd) \|\| fatal_ "getting absolute directory"
	setup_srcdir "$absdir/vpath-abs"
	unset absdir
	;;
	no)
	mkdir intree
	cd intree
	setup_srcdir .
	;;
	*)
	fatal_ "invalid value '$vpath' for variable \$vpath"
	;;
	esac

	command_ok_ \
	"$pfx configure" \
	"$srcdir/configure" $cfg_deptrack ${1+"$@"} >stdout
	cat stdout

	command_ok_ \
	"$pfx right depmode selected" \
	grep "^checking dependency style .*\.\.\. $displayed_depmode$" stdout
	rm -f stdout

	command_ok_ "$pfx simple make" make_ok
	# Some bugs in VPATH builds only kick in during a rebuild.
	command_ok_ "$pfx clean & rebuild" eval '$MAKE clean && make_ok'

	if test $depmode = disabled; then
	command_ok_ "$pfx no dependency files generated" check_no_depfiles
	r=ok \
	&& grep "[ $tab]depmode=none" Makefile \
	&& rewrite "$srcdir"/src/sub2/sub2foo.h echo 'choke me' \
	&& delete "$srcdir"/sub/subfoo.h \
	&& make_ok \
	\|\| r='not ok'
	result_ "$r" "$pfx dependency tracking is truly disabled"
	elif grep "[ $tab]depmode=none" Makefile; then
	skip_row_ 2 -r "automatic dependency tracking couldn't be activated"
	else
	command_ok_ "$pfx generated $po files look correct" $MAKE grep-test
	r=ok \
	&& : "Some checks in the subdir." \
	&& $sleep \
	&& : "Ensure rebuild rules really kick in." \
	&& rewrite "$srcdir"/src/sub2/sub2foo.h echo 'choke me' \
	&& cd src \
	&& not $MAKE \
	&& cd .. \
	&& : "Ensure the deleted header bug is fixed." \
	&& delete "$srcdir"/src/sub2/sub2foo.h \
	&& edit "$srcdir"/src/sub2/sub2foo.c -e 1d \
	&& cd src \
	&& make_ok \
	&& : "Now do similar checks for the parent directory." \
	&& cd .. \
	&& rewrite "$srcdir"/sub/subfoo.h echo 'choke me' \
	&& not $MAKE \
	&& delete "$srcdir"/sub/subfoo.h \
	&& edit "$srcdir"/sub/subfoo.c -e 1d \
	&& edit "$srcdir"/foo.h -e 2d \
	&& make_ok \
	\|\| r='not ok'
	result_ "$r" "$pfx dependency tracking works"
	fi

	command_ok_ "$pfx make distclean" check_distclean
	cd_top
	}

	for vpath in no simple long absolute; do
	do_all_tests
	done

	: