diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 552 |
1 files changed, 267 insertions, 285 deletions
diff --git a/configure.in b/configure.in index 924b0406cb..559bee0173 100644 --- a/configure.in +++ b/configure.in @@ -13,6 +13,18 @@ fi # This will get text that should go into config.make. config_vars= +# Check for a --with-gmp argument and set gmp-srcdir in config.make. +AC_ARG_WITH([gmp], + AC_HELP_STRING([--with-gmp=DIRECTORY], + [find GMP source code in DIRECTORY (not needed)]), + [ +case "$with_gmp" in +yes) AC_MSG_ERROR([--with-gmp requires an argument; use --with-gmp=DIRECTORY]) ;; +''|no) ;; +*) config_vars="$config_vars +gmp-srcdir = $withval" ;; +esac +]) # Check for a --with-gd argument and set libgd-LDFLAGS in config.make. AC_ARG_WITH([gd], AC_HELP_STRING([--with-gd=DIR], @@ -162,21 +174,18 @@ else fi AC_SUBST(oldest_abi) -AC_ARG_ENABLE([stackguard-randomization], - AC_HELP_STRING([--enable-stackguard-randomization], - [initialize __stack_chk_guard canary with a random number at program start]), - [enable_stackguard_randomize=$enableval], - [enable_stackguard_randomize=no]) -if test "$enable_stackguard_randomize" = yes; then - AC_DEFINE(ENABLE_STACKGUARD_RANDOMIZE) -fi - dnl Generic infrastructure for drop-in additions to libc. AC_ARG_ENABLE([add-ons], AC_HELP_STRING([--enable-add-ons@<:@=DIRS...@:>@], - [configure and build add-ons in DIR1,DIR2,... - search for add-ons if no parameter given]), - , [enable_add_ons=yes]) + [configure and build add-ons in DIR1,DIR2,... search for add-ons if no parameter given]), + [case "$enableval" in + yes) add_ons=`cd $srcdir && echo */configure | sed -e 's!/configure!!g'` + add_ons_automatic=yes + test "$add_ons" = "*" && add_ons= ;; + *) add_ons=`echo "$enableval" | sed 's/,/ /g'` + add_ons_automatic=no ;; + esac], + [add_ons= add_ons_automatic=no]) dnl Let the user avoid using TLS. Don't know why but... AC_ARG_WITH([tls], @@ -280,6 +289,11 @@ config_os="`echo $config_os | sed 's/^unknown-//'`" # Some configurations imply other options. case "$host_os" in +gnu* | linux* | bsd4.4* | netbsd* | freebsd*) + # These systems always use GNU tools. + gnu_ld=yes gnu_as=yes ;; +esac +case "$host_os" in # i586-linuxaout is mangled into i586-pc-linux-gnuaout linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*) ;; @@ -314,19 +328,8 @@ case "$machine-$host_os" in ;; esac -submachine= -AC_ARG_WITH([cpu], - AS_HELP_STRING([--with-cpu=CPU], [select code for CPU variant]), - [dnl - case "$withval" in - yes|'') AC_MSG_ERROR([--with-cpu requires an argument]) ;; - no) ;; - *) submachine="$withval" ;; - esac -]) - -# An add-on can set this when it wants to disable the sanity check below. +# An add-on can set this when it the tuple to disable the sanity check below. libc_config_ok=no dnl Having this here, though empty, makes sure that if add-ons' fragments @@ -334,18 +337,6 @@ dnl do AC_CONFIG_SUBDIRS([some-dir]), which just sets $subdirs, then dnl our AC_OUTPUT will actually use it. AC_CONFIG_SUBDIRS() -case "$enable_add_ons" in -''|no) add_ons= ;; -yes|'*') - add_ons=`cd $srcdir && ls -d 2> /dev/null */configure */sysdeps | - sed 's@/[[^/]]*$@@' | sort | uniq` - add_ons_automatic=yes - ;; -*) add_ons=`echo "$enable_add_ons" | sed 's/,/ /g'` - add_ons_automatic=no ;; -esac - -configured_add_ons= add_ons_sfx= add_ons_pfx= if test x"$add_ons" != x; then @@ -367,6 +358,11 @@ if test x"$add_ons" != x; then *** \`localedata' add-on.]) ;; esac + + # Test whether such a subdir really exists. + test -d $srcdir/$f || { + AC_MSG_ERROR(add-on directory \"$f\" does not exist) + } done # Now source each add-on's configure fragment. @@ -376,81 +372,23 @@ if test x"$add_ons" != x; then # whether it goes into the list to be actually used in the build. use_add_ons= for libc_add_on in $add_ons; do - # Test whether such a directory really exists. - # It can be absolute, or relative to $srcdir, or relative to the build dir. - case "$libc_add_on" in - /*) - libc_add_on_srcdir=$libc_add_on - ;; - *) - test -d "$srcdir/$libc_add_on" || { - if test -d "$libc_add_on"; then - libc_add_on="`pwd`/$libc_add_on" - else - AC_MSG_ERROR(add-on directory \"$libc_add_on\" does not exist) - fi - } - libc_add_on_srcdir=$srcdir/$libc_add_on - ;; - esac - - libc_add_on_frag=$libc_add_on_srcdir/configure - libc_add_on_canonical= - if test -r "$libc_add_on_frag"; then - AC_MSG_NOTICE(running configure fragment for add-on $libc_add_on) - libc_add_on_canonical=unknown - libc_add_on_subdirs= - . "$libc_add_on_frag" - test -z "$libc_add_on" || { - configured_add_ons="$configured_add_ons $libc_add_on" - if test "x$libc_add_on_canonical" = xunknown; then - AC_MSG_ERROR(fragment must set \$libc_add_on_canonical) - fi - for d in $libc_add_on_subdirs; do - case "$libc_add_on" in - /*) subdir_srcdir="$libc_add_on" ;; - *) subdir_srcdir="\$(..)$libc_add_on" ;; - esac - case "$d" in - .) - d="${libc_add_on_canonical:-$libc_add_on}" - ;; - /*) - subdir_srcdir="$d" - ;; - *) - subdir_srcdir="$subdir_srcdir/$d" - ;; - esac - d=`echo "$d" | sed 's@/*$@@;s@^.*/@@'` - add_on_subdirs="$add_on_subdirs $d" - test "$subdir_srcdir" = "\$(..)$d" || config_vars="$config_vars -$d-srcdir = $subdir_srcdir" - done - } + libc_add_on_frag=$srcdir/$libc_add_on/configure + if test -r $libc_add_on_frag; then + AC_MSG_RESULT(running configure fragment for add-on $libc_add_on) + . $libc_add_on_frag + else + AC_MSG_WARN(add-on fragment $libc_add_on_frag missing) fi if test -n "$libc_add_on"; then - if frags=`ls -d $libc_add_on_srcdir/sysdeps/*/preconfigure 2> /dev/null` - then - AC_MSG_CHECKING(add-on $libc_add_on for preconfigure fragments) - for frag in $frags; do - name=`echo "$frag" | sed 's@/[[^/]]*$@@;s@^.*/@@'` - echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD - . "$frag" - done - AC_MSG_RESULT() - fi use_add_ons="$use_add_ons $libc_add_on" add_ons_pfx="$add_ons_pfx $libc_add_on/" - test -z "$libc_add_on_canonical" || - add_ons_sfx="$add_ons_sfx /$libc_add_on_canonical" + add_ons_sfx="$add_ons_sfx /$libc_add_on" fi done # Use echo to strip excess whitespace. add_ons="`echo $use_add_ons`" fi AC_SUBST(add_ons) -AC_SUBST(add_on_subdirs) ### @@ -485,12 +423,44 @@ changequote(,)dnl test -n "$base_machine" || case "$machine" in a29k | am29000) base_machine=a29k machine=a29k ;; alpha*) base_machine=alpha machine=alpha/$machine ;; +arm*) base_machine=arm machine=arm/arm32/$machine ;; c3[012]) base_machine=cx0 machine=cx0/c30 ;; c4[04]) base_machine=cx0 machine=cx0/c40 ;; +hppa*64*) base_machine=hppa machine=hppa/hppa64 ;; +hppa*) base_machine=hppa machine=hppa/hppa1.1 ;; i[34567]86) base_machine=i386 machine=i386/$machine ;; ia64) base_machine=ia64 machine=ia64 ;; +m680?0) base_machine=m68k machine=m68k/$machine ;; +m68k) base_machine=m68k machine=m68k/m68020 ;; m88???) base_machine=m88k machine=m88k/$machine ;; m88k) base_machine=m88k machine=m88k/m88100 ;; +mips64*) base_machine=mips64 + case "$CC $CFLAGS $CPPFLAGS " in + *" -mabi=n32 "*) mips_cc_abi=n32 ;; + *" -mabi=64 "*|*" -mabi=n64 "*) mips_cc_abi=64 ;; + *" -mabi=32 "*|*" -mabi=o32 "*) mips_cc_abi=32 ;; + *) mips_cc_abi=default ;; + esac + case $config_os in + *abin32*) mips_config_abi=n32 ;; + *abi64*|*abin64*) mips_config_abi=64 ;; + *abi32*|*abio32*) mips_config_abi=32 ;; + *) mips_config_abi=$mips_cc_abi ;; + esac + case $mips_config_abi in + default) machine=mips/mips64/n32 mips_config_abi=n32 ;; + n32) machine=mips/mips64/n32 ;; + 64) machine=mips/mips64/n64 ;; + 32) machine=mips/mips32/kern64 ;; + esac + machine=$machine/$config_machine + if test $mips_config_abi != $mips_cc_abi; then + # This won't make it to config.make, but we want to + # set this in case configure tests depend on it. + CPPFLAGS="$CPPFLAGS -mabi=$mips_config_abi" + fi + ;; +mips*) base_machine=mips machine=mips/mips32/$machine ;; powerpc) base_machine=powerpc machine=powerpc/powerpc32 ;; powerpc64) base_machine=powerpc machine=powerpc/powerpc64 ;; s390) base_machine=s390 machine=s390/s390-32 ;; @@ -504,15 +474,12 @@ sparcv8 | supersparc | hypersparc) sparcv8plus | sparcv8plusa | sparcv9) base_machine=sparc machine=sparc/sparc32/sparcv9 ;; sparcv8plusb | sparcv9b) - base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9b ;; -sparcv9v) - base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9v ;; -sparc64) + base_machine=sparc machine=sparc/sparc32/sparcv9b ;; +sparc64 | ultrasparc) base_machine=sparc machine=sparc/sparc64 ;; -sparc64b) +sparc64b | ultrasparc3) base_machine=sparc machine=sparc/sparc64/sparcv9b ;; -sparc64v) - base_machine=sparc machine=sparc/sparc64/sparcv9v ;; +thumb*) base_machine=thumb machine=arm/thumb/$machine ;; *) base_machine=$machine ;; esac changequote([,])dnl @@ -582,7 +549,7 @@ done # For sparc/sparc32, try sparc/sparc32 and then sparc. mach= -tail=$machine${submachine:+/$submachine} +tail=$machine while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do set $m # Prepend the machine's FPU directory unless --without-fp. @@ -599,38 +566,25 @@ dnl We are done with glob and regexp uses of [ and ]; return to autoconf. changequote([,])dnl # Find what sysdep directories exist. -sysnames_add_ons= sysnames= -for b in $base ''; do - for m0 in $mach ''; do - for v in /$vendor ''; do - test "$v" = / && continue - for o in /$ostry ''; do - test "$o" = / && continue - for m in $mach ''; do - for d in $add_ons_pfx ''; do +IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:" +for d in $add_ons_pfx ''; do + for b in $base ''; do + for m0 in $mach ''; do + for v in /$vendor ''; do + test "$v" = / && continue + for o in /$ostry ''; do + test "$o" = / && continue + for m in $mach ''; do for a in $add_ons_sfx ''; do - if test -n "$m0$m0sub$b$v$o$m$msub"; then - try_srcdir="${srcdir}/" - case "$d" in - /*) try_srcdir= ;; - esac - try="${d}sysdeps$m0$m0sub$b$v$o$m$msub$a" + if test "$m0$b$v$o$m"; then + try="${d}sysdeps$m0$b$v$o$m$a" test -n "$enable_debug_configure" && echo "$0 [DEBUG]: try $try" >&2 - if test -d "$try_srcdir$try"; then + if test -d $srcdir/$try; then sysnames="$sysnames $try" { test -n "$o" || test -n "$b"; } && os_used=t { test -n "$m" || test -n "$m0"; } && machine_used=t - case x${m0:-$m} in - x*/$submachine) submachine_used=t ;; - esac - if test -n "$d"; then - case "$sysnames_add_ons" in - *" $d "*) ;; - *|'') sysnames_add_ons="$sysnames_add_ons $d" ;; - esac - fi fi fi done @@ -640,6 +594,7 @@ for b in $base ''; do done done done +IFS="$ac_save_ifs" if test -z "$os_used" && test "$os" != none; then AC_MSG_ERROR(Operating system $os is not supported.) @@ -647,10 +602,6 @@ fi if test -z "$machine_used" && test "$machine" != none; then AC_MSG_ERROR(The $machine is not supported.) fi -if test -z "$submachine_used" && test -n "$submachine"; then - AC_MSG_ERROR(The $submachine subspecies of $host_cpu is not supported.) -fi -AC_SUBST(submachine) # We have now validated the configuration. @@ -720,10 +671,6 @@ while test $# -gt 0; do then implied="$implied $try" found=yes - case "$sysnames_add_ons" in - *" $d "*) ;; - *|'') sysnames_add_ons="$sysnames_add_ons $d" ;; - esac fi done if test $found = no; then @@ -763,61 +710,6 @@ AC_SUBST(sysnames) # The other names were emitted during the scan. AC_MSG_RESULT($default_sysnames) -# Collect the list of add-ons that supply partial sysdeps trees. -sysdeps_add_ons= -for add_on in $add_ons; do - case "$add_on" in - /*) xsrcdir= ;; - *) xsrcdir="$srcdir/" ;; - esac - - test -d "$xsrcdir$add_on/sysdeps" || { - case "$configured_add_ons " in - *" $add_on "*) ;; - *|'') - AC_MSG_ERROR(add-on $add_on has no configure fragment or sysdeps tree) - ;; - esac - continue - } - - sysdeps_add_ons="$sysdeps_add_ons $add_on" - case "$sysnames_add_ons" in - *" $add_on/ "*) ;; - *|'') - AC_MSG_WARN(add-on $add_on contributed no sysdeps directories) - continue ;; - esac - - found=no - for d in $sysnames; do - case "$d" in - $add_on/sysdeps/*) ;; - *) continue ;; - esac - (cd "$xsrcdir$d" && for f in *[[!~]]; do - case "$f" in - sys|bits) - for ff in $f/*.h; do - test -d "$ff" || { test -e "$ff" && exit 88; } - done - ;; - *) - test -d "$f" || { test -e "$f" && exit 88; } - ;; - esac - done) - if test $? -eq 88; then - found=yes - break - fi - done - if test $found = no; then - AC_MSG_WARN(add-on $add_on contributed no useful sysdeps directories) - fi -done -AC_SUBST(sysdeps_add_ons) - ### Locate tools. @@ -860,7 +752,7 @@ fi # These programs are version sensitive. AC_CHECK_TOOL_PREFIX AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v, - [version \([egcygnustpi-]*[0-9.]*\)], [3.4* | 4.[0-9]* ], + [version \([egcygnustpi-]*[0-9.]*\)], [3.[2-9]* | 4.[0-9]* ], critic_missing="$critic_missing gcc") AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version, [GNU Make[^0-9]*\([0-9][0-9.]*\)], @@ -914,16 +806,8 @@ if test -n "$sysheaders"; then ccheaders=`$CC -print-file-name=include` SYSINCLUDES="-nostdinc -isystem $ccheaders \ -isystem `echo $sysheaders | sed 's/:/ -isystem /g'`" - if test -n "$CXX"; then - cxxversion=`$CXX -dumpversion 2>&AS_MESSAGE_LOG_FD` && - cxxmachine=`$CXX -dumpmachine 2>&AS_MESSAGE_LOG_FD` && - cxxheaders=`$CXX -print-file-name=../../../../include/c++/`"$cxxversion" && - CXX_SYSINCLUDES="-isystem $cxxheaders \ --isystem $cxxheaders/$cxxmachine -isystem $cxxheaders/backward" - fi fi AC_SUBST(SYSINCLUDES) -AC_SUBST(CXX_SYSINCLUDES) # check if ranlib is necessary AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl @@ -1334,12 +1218,12 @@ EOF AC_DEFINE(HAVE_BROKEN_ALIAS_ATTRIBUTE) fi - if test $libc_cv_visibility_attribute = yes; then + if test $libc_cv_visibility_attribute = yes -a $gnu_ld = yes; then AC_CACHE_CHECK(whether to put _rtld_local into .sdata section, libc_cv_have_sdata_section, [echo "int i;" > conftest.c libc_cv_have_sdata_section=no - if ${CC-cc} $LDFLAGS -fPIC -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \ + if ${CC-cc} $LDFLAGS -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \ | grep '\.sdata' >/dev/null; then libc_cv_have_sdata_section=yes fi @@ -1351,7 +1235,7 @@ EOF fi AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, - libc_cv_initfini_array, [dnl + libc_cv_initfinit_array, [dnl cat > conftest.c <<EOF int _start (void) { return 0; } int __start (void) { return 0; } @@ -1362,16 +1246,17 @@ EOF -static -nostartfiles -nostdlib 1>&AS_MESSAGE_LOG_FD]) then if readelf -S conftest | fgrep INIT_ARRAY > /dev/null; then - libc_cv_initfini_array=yes + libc_cv_initfinit_array=yes else - libc_cv_initfini_array=no + libc_cv_initfinit_array=no fi else - libc_cv_initfini_array=no + libc_cv_initfinit_array=no fi rm -f conftest*]) - if test $libc_cv_initfini_array != yes; then - AC_MSG_ERROR([Need linker with .init_array/.fini_array support.]) + AC_SUBST(libc_cv_initfinit_array) + if test $libc_cv_initfinit_array = yes; then + AC_DEFINE(HAVE_INITFINI_ARRAY) fi AC_CACHE_CHECK(for libunwind-support in compiler, @@ -1397,7 +1282,7 @@ EOF int _start (void) { return 42; } EOF if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS - -fPIC -shared -o conftest.so conftest.c + -shared -o conftest.so conftest.c -nostartfiles -nostdlib -Wl,--enable-new-dtags,-z,nodelete 1>&AS_MESSAGE_LOG_FD]) then @@ -1414,7 +1299,7 @@ EOF int _start (void) { return 42; } EOF if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS - -fPIC -shared -o conftest.so conftest.c + -shared -o conftest.so conftest.c -nostartfiles -nostdlib -Wl,--enable-new-dtags,-z,nodlopen 1>&AS_MESSAGE_LOG_FD]) then @@ -1431,7 +1316,7 @@ EOF int _start (void) { return 42; } EOF if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS - -fPIC -shared -o conftest.so conftest.c + -shared -o conftest.so conftest.c -nostartfiles -nostdlib -Wl,--enable-new-dtags,-z,initfirst 1>&AS_MESSAGE_LOG_FD]) then @@ -1463,7 +1348,7 @@ EOF int _start (void) { return 42; } EOF if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS - -fPIC -shared -o conftest.so conftest.c + -shared -o conftest.so conftest.c -Wl,-Bgroup -nostdlib 1>&AS_MESSAGE_LOG_FD]) then libc_cv_Bgroup=yes @@ -1480,7 +1365,7 @@ int main (void) { return 0; } EOF changequote(,)dnl libc_cv_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ - -fPIC -shared -shared-libgcc -o conftest.so \ + -shared -shared-libgcc -o conftest.so \ conftest.c -v 2>&1 >/dev/null \ | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'` changequote([,])dnl @@ -1493,7 +1378,7 @@ changequote([,])dnl int main (void) { return 0; } EOF if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS - -fPIC -shared -o conftest.so conftest.c + -shared -o conftest.so conftest.c -lgcc_s$libc_cv_libgcc_s_suffix -Wl,--as-needed -nostdlib 1>&AS_MESSAGE_LOG_FD]) then @@ -1534,7 +1419,7 @@ extern int mumble; int foo (void) { return bar (mumble); } EOF if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS - -fPIC -shared -o conftest.so conftest.c + -shared -o conftest.so conftest.c -nostdlib -nostartfiles -Wl,-z,combreloc 1>&AS_MESSAGE_LOG_FD]) then @@ -1563,7 +1448,7 @@ dnl look for a section named .rel.dyn. int _start (void) { return 42; } EOF if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS - -fPIC -shared -o conftest.so conftest.c + -shared -o conftest.so conftest.c -Wl,-z,execstack -nostdlib 1>&AS_MESSAGE_LOG_FD]) then @@ -1589,58 +1474,25 @@ EOF rm -f conftest*]) AC_SUBST(libc_cv_fpie) - - AC_CACHE_CHECK(for --hash-style option, - libc_cv_hashstyle, [dnl - cat > conftest.c <<EOF -int _start (void) { return 42; } -EOF - if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS - -fPIC -shared -o conftest.so conftest.c - -Wl,--hash-style=both -nostdlib 1>&AS_MESSAGE_LOG_FD]) - then - libc_cv_hashstyle=yes - else - libc_cv_hashstyle=no - fi - rm -f conftest*]) - AC_SUBST(libc_cv_hashstyle) fi -AC_CACHE_CHECK(for -fno-toplevel-reorder, libc_cv_fno_toplevel_reorder, [dnl +AC_CACHE_CHECK(for -fno-unit-at-a-time, libc_cv_fno_unit_at_a_time, [dnl cat > conftest.c <<EOF int foo; EOF -if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -fno-toplevel-reorder +if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -fno-unit-at-a-time conftest.c 1>&AS_MESSAGE_LOG_FD]) then - libc_cv_fno_toplevel_reorder=yes + libc_cv_fno_unit_at_a_time=yes else - libc_cv_fno_toplevel_reorder=no + libc_cv_fno_unit_at_a_time=no fi rm -f conftest*]) -if test $libc_cv_fno_toplevel_reorder = yes; then - fno_unit_at_a_time=-fno-toplevel-reorder -else +if test $libc_cv_fno_unit_at_a_time = yes; then fno_unit_at_a_time=-fno-unit-at-a-time fi AC_SUBST(fno_unit_at_a_time) -AC_CACHE_CHECK(for -fstack-protector, libc_cv_ssp, [dnl -cat > conftest.c <<EOF -int foo; -main () { return 0;} -EOF -if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -fstack-protector - -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]) -then - libc_cv_ssp=yes -else - libc_cv_ssp=no -fi -rm -f conftest*]) -AC_SUBST(libc_cv_ssp) - if test $elf != yes; then AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini, [AC_TRY_COMPILE(, [asm (".section .init"); @@ -1654,7 +1506,7 @@ if test $elf != yes; then fi fi -if test $elf = yes; then +if test $elf = yes -a $gnu_ld = yes; then AC_CACHE_CHECK(whether cc puts quotes around section names, libc_cv_have_section_quotes, [cat > conftest.c <<EOF @@ -1770,17 +1622,13 @@ elif test $libc_cv_asm_weakext_directive = yes; then fi AC_CACHE_CHECK(whether CFI directives are supported, libc_cv_asm_cfi_directives, [dnl -case $machine in - sparc/sparc64*) cfi_offset=2047;; - *) cfi_offset=0;; -esac cat > conftest.s <<EOF .text - .type func,%function + .type func,@function func: .cfi_startproc .cfi_remember_state - .cfi_rel_offset 1, $cfi_offset + .cfi_rel_offset 1, 0 .cfi_endproc EOF if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then @@ -1793,6 +1641,39 @@ if test $libc_cv_asm_cfi_directives = yes; then AC_DEFINE(HAVE_ASM_CFI_DIRECTIVES) fi +AC_CACHE_CHECK(if -g produces usable source locations for assembler-with-cpp, + libc_cv_cpp_asm_debuginfo, [dnl +cat > conftest.S <<EOF +#include "confdefs.h" + +/* comment on + two lines */ + ${libc_cv_dot_text} + ${libc_cv_asm_global_directive} foo +foo: + /* Unfortunately this test only works for a real instruction, + not for any of the machine-independent pseudo-ops. + So we just have to assume everybody has a "nop". */ + nop + /* comment */ + nop + /* comment */ + nop +EOF +if AC_TRY_COMMAND([${CC-cc} $CPPFLAGS $ASFLAGS -g -c conftest.S 1>&AS_MESSAGE_LOG_FD]) && { + ac_pattern='conftest\.S' + AC_TRY_COMMAND([readelf --debug-dump=line conftest.o | + grep $ac_pattern 1>&AS_MESSAGE_LOG_FD]) + }; then + libc_cv_cpp_asm_debuginfo=yes +else + libc_cv_cpp_asm_debuginfo=no +fi +rm -f conftest*])AC_SUBST(libc_cv_cpp_asm_debuginfo) +if test $libc_cv_cpp_asm_debuginfo = yes; then + AC_DEFINE(HAVE_CPP_ASM_DEBUGINFO) +fi + AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl cat > conftest.c <<\EOF _start () {} @@ -1845,6 +1726,71 @@ if test "$libc_cv_c_asmcr0_bug" != 'no'; then fi fi +AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info, +[cat > conftest.c <<EOF +#line $LINENO "configure" +static char *__EH_FRAME_BEGIN__; +_start () +{ +#ifdef CHECK__register_frame + __register_frame (__EH_FRAME_BEGIN__); + __deregister_frame (__EH_FRAME_BEGIN__); +#endif +#ifdef CHECK__register_frame_info + __register_frame_info (__EH_FRAME_BEGIN__); + __deregister_frame_info (__EH_FRAME_BEGIN__); +#endif +} +int __eh_pc; +__throw () {} +/* FIXME: this is fragile. */ +malloc () {} +strcmp () {} +strlen () {} +memcpy () {} +memset () {} +free () {} +abort () {} +__bzero () {} +dl_iterate_phdr () {} +EOF +libc_unwind_check="${CC-cc} $CFLAGS $CPPFLAGS -DCHECK__register_frame_info \ + $LDFLAGS \ + -nostdlib -nostartfiles -o conftest conftest.c \ + -lgcc" +# Some platforms' specs put -lgcc first. The second one doesn't hurt. +if AC_TRY_COMMAND([$libc_unwind_check >&AS_MESSAGE_LOG_FD]) || + AC_TRY_COMMAND([$libc_unwind_check -lgcc_eh -lgcc >&AS_MESSAGE_LOG_FD]) +then + if $libc_unwind_check -v 2>&1 >/dev/null \ + | grep -- --eh-frame-hdr 2>&1 >/dev/null; then + libc_cv_gcc_dwarf2_unwind_info=no_registry_needed + else + libc_cv_gcc_dwarf2_unwind_info=static + fi +else + libc_cv_gcc_dwarf2_unwind_info=no +fi +if test $libc_cv_gcc_dwarf2_unwind_info = no; then + if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -DCHECK__register_frame + $LDFLAGS -nostdlib -nostartfiles + -o conftest conftest.c -lgcc >&AS_MESSAGE_LOG_FD]); then + libc_cv_gcc_dwarf2_unwind_info=yes + else + libc_cv_gcc_dwarf2_unwind_info=no + fi +fi +rm -f conftest*]) +case $libc_cv_gcc_dwarf2_unwind_info in +yes) + AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) + ;; +static) + AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) + AC_DEFINE(HAVE_DWARF2_UNWIND_INFO_STATIC) + ;; +esac + dnl Check whether compiler understands __builtin_expect. AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect, [cat > conftest.c <<EOF @@ -1906,6 +1852,35 @@ if test "$libc_cv_gcc_builtin_redirection" = yes ; then AC_DEFINE(HAVE_BUILTIN_REDIRECTION) fi +dnl Check whether the compiler supports subtraction of local labels. +AC_CACHE_CHECK(for local label subtraction, libc_cv_gcc_subtract_local_labels, +[cat > conftest.c <<EOF +changequote(,)dnl +#line $LINENO "configure" +int foo (int a) +{ + static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 }; + void *p = &&l1 + ar[a]; + goto *p; + l1: + return 1; + l2: + return 2; +} +changequote([,])dnl +EOF +dnl No \ in command here because it ends up inside ''. +if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostdlib -nostartfiles + -o conftest conftest.c -lgcc >&AS_MESSAGE_LOG_FD]); then + libc_cv_gcc_subtract_local_labels=yes +else + libc_cv_gcc_subtract_local_labels=no +fi +rm -f conftest*]) +if test "$libc_cv_gcc_subtract_local_labels" = yes; then + AC_DEFINE(HAVE_SUBTRACT_LOCAL_LABELS) +fi + dnl Check whether the compiler supports the __thread keyword. if test "x$use__thread" != xno; then AC_CACHE_CHECK([for __thread], libc_cv_gcc___thread, @@ -1989,22 +1964,7 @@ else fi # Check if we're building with SELinux support. if test "x$have_selinux" = xyes; then - AC_DEFINE(HAVE_SELINUX, 1, [SELinux support]) - - # See if we have the libaudit library - AC_CHECK_LIB(audit, audit_log_user_avc_message, - have_libaudit=yes, have_libaudit=no) - if test "x$have_libaudit" = xyes; then - AC_DEFINE(HAVE_LIBAUDIT, 1, [SELinux libaudit support]) - fi - AC_SUBST(have_libaudit) - - # See if we have the libcap library - AC_CHECK_LIB(cap, cap_init, have_libcap=yes, have_libcap=no) - if test "x$have_libcap" = xyes; then - AC_DEFINE(HAVE_LIBCAP, 1, [SELinux libcap support]) - fi - AC_SUBST(have_libcap) + AC_DEFINE(HAVE_SELINUX,1,[SELinux support]) fi AC_SUBST(have_selinux) @@ -2138,7 +2098,13 @@ AC_SUBST(libc_cv_forced_unwind) AC_SUBST(use_ldconfig) AC_SUBST(ldd_rewrite_script) -AC_SUBST(elf) AC_SUBST(xcoff) +AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf) AC_SUBST(xcoff) +if test $gnu_ld = yes; then + AC_DEFINE(HAVE_GNU_LD) +fi +if test $gnu_as = yes; then + AC_DEFINE(HAVE_GNU_AS) +fi if test $elf = yes; then AC_DEFINE(HAVE_ELF) fi @@ -2149,7 +2115,17 @@ fi AC_SUBST(static) AC_SUBST(shared) if test $shared = default; then - shared=$elf + if test $gnu_ld = yes; then + shared=$elf + else + # For now we do not assume shared libs are available. In future more + # tests might become available. + shared=no + fi +fi + +if test x"$libc_cv_idn" = xyes; then + AC_DEFINE(HAVE_LIBIDN) fi AC_CACHE_CHECK([whether -fPIC is default], pic_default, @@ -2173,6 +2149,12 @@ AC_SUBST(nopic_initfini) AC_SUBST(DEFINES) +case "$add_ons" in + *door*) linux_doors=yes ;; + *) linux_doors=no ;; +esac +AC_SUBST(linux_doors) + dnl See sysdeps/mach/configure.in for this variable. AC_SUBST(mach_interface_list) |