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authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /configure.in
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
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(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'configure.in')
-rw-r--r--configure.in552
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)