glibc/configure.in
Andreas Jaeger 2b90473904 Update.
2002-04-04  Andreas Jaeger  <aj@suse.de>

	* sysdeps/x86_64/fpu/e_sqrt.c: New file.
	* sysdeps/x86_64/fpu/e_sqrtf.c: New file.

	* sysdeps/x86_64/fpu/s_fabs.c: New file.
	* sysdeps/x86_64/fpu/s_fabsf.c: New file.
	* sysdeps/x86_64/fpu/s_fabsl.c: New file.

	* sysdeps/unix/sysv/linux/x86_64/time.S: New file.

	* sysdeps/unix/sysv/linux/x86_64/gettimeofday.S: New file.

	* sysdeps/unix/sysv/linux/x86_64/gettimeofday.c: Removed.
	* sysdeps/unix/sysv/linux/x86_64/time.S: Removed.

	* configure.in: Handle all mips entries the same.

	* sysdeps/mips/dec/bits/endian.h: Removed since arch is not
	supported.
	* sysdeps/mips/mips3/*: Likewise.
	* sysdeps/mips/p40/bits/endian.h: Likewise.
2002-04-04 09:04:37 +00:00

1753 lines
50 KiB
Plaintext
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

dnl Process this file with autoconf to produce a configure script.
AC_REVISION([$CVSid$])
AC_PREREQ(2.13)dnl dnl Minimum Autoconf version required.
AC_INIT(include/features.h)
AC_CONFIG_HEADER(config.h)
AC_CONFIG_AUX_DIR(scripts)
# 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, dnl
--with-gmp=DIRECTORY find GMP source code in DIRECTORY (not needed),
[dnl
case "$with_gmp" in
yes) AC_MSG_ERROR(--with-gmp requires an argument; use --with-gmp=DIRECTORY) ;;
''|no) ;;
*) config_vars="$config_vars
gmp-srcdir = $withval" ;;
esac
])
# Check for a --with-gd argument and set libgd-LDFLAGS in config.make.
AC_ARG_WITH(gd, dnl
--with-gd=DIR find libgd include dir and library with prefix DIR,
[dnl
case "$with_gd" in
yes|''|no) ;;
*) libgd_include="-I$withval/include"
libgd_ldflags="-L$withval/lib" ;;
esac
])
AC_ARG_WITH(gd-include, dnl
--with-gd-include=DIR find libgd include files in DIR,
[dnl
case "$with_gd_include" in
''|no) ;;
*) libgd_include="-I$withval" ;;
esac
])
AC_ARG_WITH(gd-lib, dnl
--with-gd-lib=DIR find libgd library files in DIR,
[dnl
case "$with_gd_lib" in
''|no) ;;
*) libgd_ldflags="-L$withval" ;;
esac
])
if test -n "$libgd_include"; then
config_vars="$config_vars
CFLAGS-memusagestat.c = $libgd_include"
fi
if test -n "$libgd_ldflags"; then
config_vars="$config_vars
libgd-LDFLAGS = $libgd_ldflags"
fi
dnl Arguments to specify presence of other packages/features.
AC_ARG_WITH(fp, dnl
[ --with-fp if using floating-point hardware [default=yes]],
with_fp=$withval, with_fp=yes)
AC_SUBST(with_fp)
AC_ARG_WITH(binutils, dnl
--with-binutils=PATH specify location of binutils (as and ld),
path_binutils=$withval, path_binutils='')
AC_ARG_WITH(elf, dnl
--with-elf if using the ELF object format,
elf=$withval, elf=no)
AC_ARG_WITH(xcoff, dnl
--with-xcoff if using the XCOFF object format,
xcoff=$withval, xcoff=no)
AC_ARG_WITH(cvs, dnl
[ --without-cvs if CVS should not be used],
with_cvs=$withval, with_cvs=yes)
if test "$with_cvs" = yes; then
if test -d $srcdir/CVS && grep :pserver: $srcdir/CVS/Root > /dev/null
then
with_cvs=no
fi
fi
AC_SUBST(with_cvs)
AC_ARG_WITH(headers, dnl
[ --with-headers=PATH location of system headers to use
[e.g. /usr/src/linux/include]
[default=compiler default]],
sysheaders=$withval, sysheaders='')
AC_ARG_ENABLE(libio, dnl
[ --enable-libio build in GNU libio instead of GNU stdio],
[if test $enableval = yes; then
stdio=libio
else
stdio=stdio
fi],
stdio=default)
AC_ARG_ENABLE(sanity-checks, dnl
[ --disable-sanity-checks really do not use threads (should not be used
except in special situations) [default=yes]],
enable_sanity=$enableval, enable_sanity=yes)
dnl Arguments to enable or disable building the static, shared, profiled,
dnl and -fomit-frame-pointer libraries.
dnl I've disabled this for now since we cannot build glibc without static
dnl libraries built in the moment.
dnl AC_ARG_ENABLE(static, dnl
dnl [ --enable-static build static library [default=yes]],
dnl static=$enableval, static=yes)
static=yes
AC_ARG_ENABLE(shared, dnl
[ --enable-shared build shared library [default=yes if GNU ld & ELF]],
shared=$enableval, shared=default)
AC_ARG_ENABLE(profile, dnl
[ --enable-profile build profiled library [default=yes]],
profile=$enableval, profile=yes)
AC_ARG_ENABLE(omitfp, dnl
[ --enable-omitfp build undebuggable optimized library [default=no]],
omitfp=$enableval, omitfp=no)
AC_ARG_ENABLE(bounded, dnl
[ --enable-bounded build with runtime bounds checking [default=no]],
bounded=$enableval, bounded=no)
AC_ARG_ENABLE(versioning, dnl
[ --disable-versioning do not include versioning information in the
library objects [default=yes if supported]],
enable_versioning=$enableval, enable_versioning=yes)
AC_ARG_ENABLE(oldest-abi, dnl
[ --enable-oldest-abi=ABI configure the oldest ABI supported [e.g. 2.2]
[default=glibc default]],
oldest_abi=$enableval, oldest_abi=no)
if test "$oldest_abi" = yes || test "$oldest_abi" = no; then
oldest_abi=default
else
AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi")
fi
AC_SUBST(oldest_abi)
dnl Generic infrastructure for drop-in additions to libc.
AC_ARG_ENABLE(add-ons, dnl
[ --enable-add-ons[=DIR1,DIR2]...
configure and build add-ons in DIR1,DIR2,...
search for add-ons if no parameter given],
[case "$enableval" in
yes) add_ons=`cd $srcdir && echo */configure | sed -e 's!/configure!!g'`
test "$add_ons" = "*" && add_ons= ;;
*) add_ons=`echo "$enableval" | sed 's/,/ /g'`;;
esac],
[add_ons=])
dnl Let the user avoid using TLS. Don't know why but...
AC_ARG_WITH(tls, dnl
[ --without-tls prevent support for TLS],
usetls=$withval, usetls=yes)
AC_CONFIG_SUBDIRS($add_ons)
add_ons_pfx=
if test x"$add_ons" != x; then
for f in $add_ons; do
# Some sanity checks
if test "$f" = "crypt"; then
AC_MSG_ERROR([
*** It seems that you're using an old \`crypt' add-on. crypt is now
*** part of glibc and using the old add-on will not work with this
*** release. Start again with fresh sources and without the old
*** \`crypt' add-on.])
fi
if test "$f" = "localedata"; then
AC_MSG_ERROR([
*** It seems that you're using an old \`localedata' add-on. localedata
*** is now part of glibc and using the old add-on will not work with
*** this release. Start again with fresh sources and without the old
*** \`localedata' add-on.])
fi
# Test whether such a subdir really exists.
if test -d $srcdir/$f; then
add_ons_pfx="$add_ons_pfx $f/"
else
AC_MSG_ERROR(add-on directory \"$f\" does not exist)
fi
done
fi
dnl On some platforms we cannot use dynamic loading. We must provide
dnl static NSS modules.
AC_ARG_ENABLE(static-nss, dnl
[ --enable-static-nss build static NSS modules [default=no]],
static_nss=$enableval, static_nss=no)
if test x"$static_nss" = xyes; then
AC_DEFINE(DO_STATIC_NSS)
fi
AC_ARG_ENABLE(force-install,
[ --disable-force-install don't force installation of files from this package,
even if they are older than the installed files],
force_install=$enableval, force_install=yes)
AC_SUBST(force_install)
dnl On some platforms we allow dropping compatibility with all kernel
dnl versions.
AC_ARG_ENABLE(kernel,
[ --enable-kernel=VERSION compile for compatibility with kernel not older
than VERSION],
minimum_kernel=$enableval)
dnl Prevent unreasonable values.
if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then
# Better nothing than this.
minimum_kernel=""
else
if test "$minimum_kernel" = current; then
minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel=
fi
fi
dnl For the development we sometimes want gcc to issue even more warnings.
dnl This is not the default since many of the extra warnings are not
dnl appropriate.
AC_ARG_ENABLE(all-warnings,
[ --enable-all-warnings enable all useful warnings gcc can issue],
all_warnings=$enableval)
AC_SUBST(all_warnings)
AC_CANONICAL_HOST
# The way shlib-versions is used to generate soversions.mk uses a
# fairly simplistic model for name recognition that can't distinguish
# i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os
# of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can
# tell. This doesn't get used much beyond that, so it's fairly safe.
case "$host_os" in
linux*)
;;
gnu*)
host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'`
;;
esac
# We keep the original values in `$config_*' and never modify them, so we
# can write them unchanged into config.make. Everything else uses
# $machine, $vendor, and $os, and changes them whenever convenient.
config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os
# Don't allow vendor == "unknown"
test "$config_vendor" = unknown && config_vendor=
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 "$host_os" in
# i586-linuxaout is mangled into i586-pc-linux-gnuaout
linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*)
;;
gnu* | linux* | sysv4* | solaris2* | irix6*)
# These systems (almost) always use the ELF format.
elf=yes
;;
aix*)
# These systems are always xcoff
xcoff=yes
elf=no
;;
esac
machine=$config_machine
vendor=$config_vendor
os=$config_os
# config.guess on some IBM machines says `rs6000' instead of `powerpc'.
# Unify this here.
if test "$machine" = rs6000; then
machine="powerpc"
fi
###
### I put this here to prevent those annoying emails from people who cannot
### read and try to compile glibc on unsupported platforms. --drepper
###
### By using the undocumented --enable-hacker-mode option for configure
### one can skip this test to make the configuration not fail for unsupported
### platforms.
###
if test -z "$enable_hacker_mode"; then
case "$machine-$host_os" in
*-linux* | *-gnu* | arm*-none* | powerpc-aix4.3.*)
;;
*)
echo "*** The GNU C library is currently not available for this platform."
echo "*** So far nobody cared to port it and if there is no volunteer it"
echo "*** might never happen. So, if you have interest to see glibc on"
echo "*** this platform visit"
echo "*** http://www.gnu.org/software/libc/porting.html"
echo "*** and join the group of porters"
exit 1
;;
esac
fi
dnl We need to use [ and ] for other purposes for a while now.
changequote(,)dnl
# Expand the configuration machine name into a subdirectory by architecture
# type and particular chip.
case "$machine" in
a29k | am29000) base_machine=a29k machine=a29k ;;
alpha*) base_machine=alpha machine=alpha/$machine ;;
arm*) base_machine=arm machine=arm/arm32/$machine ;;
c3[012]) base_machine=cx0 machine=cx0/c30 ;;
c4[04]) base_machine=cx0 machine=cx0/c40 ;;
hppa*64*) base_machine=hppa machine=hppa/hppa64 ;;
hppa*) base_machine=hppa machine=hppa/hppa1.1 ;;
i[3456]86) base_machine=i386 machine=i386/$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 machine=mips/mips64/$machine ;;
mips*) base_machine=mips machine=mips/$machine ;;
s390) base_machine=s390 machine=s390/s390-32 ;;
s390x) base_machine=s390 machine=s390/s390-64 ;;
sh3*) base_machine=sh machine=sh/sh3 ;;
sh4*) base_machine=sh machine=sh/sh4 ;;
sparc | sparcv[67])
base_machine=sparc machine=sparc/sparc32 ;;
sparcv8 | supersparc | hypersparc)
base_machine=sparc machine=sparc/sparc32/sparcv8 ;;
sparcv8plus | sparcv8plusa | sparcv9)
base_machine=sparc machine=sparc/sparc32/sparcv9 ;;
sparcv8plusb | sparcv9b)
base_machine=sparc machine=sparc/sparc32/sparcv9b ;;
sparc64 | ultrasparc)
base_machine=sparc machine=sparc/sparc64 ;;
sparc64b | ultrasparc3)
base_machine=sparc machine=sparc/sparc64/sparcv9b ;;
thumb*) base_machine=thumb machine=arm/thumb/$machine ;;
*) base_machine=$machine ;;
esac
changequote([,])dnl
AC_SUBST(base_machine)
if test "$base_machine" = "i386"; then
AC_DEFINE(USE_REGPARMS)
fi
# Compute the list of sysdep directories for this configuration.
# This can take a while to compute.
sysdep_dir=$srcdir/sysdeps
AC_MSG_CHECKING(sysdep dirs)
dnl We need to use [ and ] for other purposes for a while now.
changequote(,)dnl
# Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`"
case "$os" in
gnu*)
base_os=mach/hurd ;;
netbsd* | 386bsd* | freebsd* | bsdi*)
base_os=unix/bsd/bsd4.4 ;;
osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*)
base_os=unix/bsd ;;
sysv* | isc* | esix* | sco* | minix* | irix4* | linux*)
base_os=unix/sysv ;;
irix6*)
base_os=unix/sysv/irix6/$os ;;
solaris[2-9]*)
base_os=unix/sysv/sysv4 ;;
hpux*)
base_os=unix/sysv/hpux/$os ;;
aix4.3*)
base_os=unix/sysv/aix/aix4.3 ;;
none)
base_os=standalone ;;
*)
base_os='' ;;
esac
# For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos.
tail=$os
ostry=$os
while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do
ostry="$ostry /$o"
tail=$o
done
o=`echo $tail | sed 's/[0-9]*$//'`
if test $o != $tail; then
ostry="$ostry /$o"
fi
# For linux-gnu, try linux-gnu, then linux.
o=`echo $tail | sed 's/-.*$//'`
if test $o != $tail; then
ostry="$ostry /$o"
fi
# For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix.
base=
tail=$base_os
while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do
set $b
base="$base /$1"
tail="$2"
done
# For sparc/sparc32, try sparc/sparc32 and then sparc.
mach=
tail=$machine
while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do
set $m
# Prepend the machine's FPU directory unless --without-fp.
if test "$with_fp" = yes; then
mach="$mach /$1/fpu"
fi
mach="$mach /$1"
tail="$2"
done
dnl We are done with glob and regexp uses of [ and ]; return to autoconf.
changequote([,])dnl
# Find what sysdep directories exist.
sysnames=
IFS="${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 $mach ''; do
if test "$m0$b$v$o$m"; then
try="${d}sysdeps$m0$b$v$o$m"
test -n "$enable_debug_configure" &&
echo "$0 [DEBUG]: try $try" >&2
if test -d $srcdir/$try; then
sysnames="$sysnames $try"
{ test -n "$o" || test -n "$b"; } && os_used=t
{ test -n "$m" || test -n "$m0"; } && machine_used=t
fi
fi
done
done
done
done
done
done
IFS="$ac_save_ifs"
if test -z "$os_used" && test "$os" != none; then
AC_MSG_ERROR(Operating system $os is not supported.)
fi
if test -z "$machine_used" && test "$machine" != none; then
AC_MSG_ERROR(The $machine is not supported.)
fi
# We have now validated the configuration.
# If using ELF, look for an `elf' subdirectory of each machine directory.
# We prepend these rather than inserting them whereever the machine appears
# because things specified by the machine's ELF ABI should override
# OS-specific things, and should always be the same for any OS on the
# machine (otherwise what's the point of an ABI?).
if test "$elf" = yes; then
elf_dirs=
for d in $add_ons_pfx ''; do
for m in $mach; do
if test -d $srcdir/${d}sysdeps$m/elf; then
elf_dirs="$elf_dirs ${d}sysdeps$m/elf"
fi
done
done
sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames"
fi
# Expand the list of system names into a full list of directories
# from each element's parent name and Implies file (if present).
set $sysnames
names=
while test $# -gt 0; do
name=$1
shift
case " $names " in *" $name "*)
# Already in the list.
continue
esac
# Report each name as we discover it, so there is no long pause in output.
echo $ac_n "$name $ac_c" >&AC_FD_MSG
name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'`
case $name in
/*) xsrcdir= ;;
*) xsrcdir=$srcdir/ ;;
esac
test -n "$enable_debug_configure" &&
echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2
if test -f $xsrcdir$name/Implies; then
# Collect more names from the `Implies' file (removing comments).
implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`"
implied=
for x in $implied_candidate; do
found=no
if test -d $xsrcdir$name_base/$x; then
implied="$implied $name_base/$x";
found=yes
fi
for d in $add_ons_pfx ''; do
try="${d}sysdeps/$x"
case $d in
/*) try_srcdir= ;;
*) try_srcdir=$srcdir/ ;;
esac
test -n "$enable_debug_configure" &&
echo "[DEBUG]: $name implied $x try($d) {$try_srcdir}$try" >&2
if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try;
then
implied="$implied $try"
found=yes
fi
done
if test $found = no; then
AC_MSG_WARN($name/Implies specifies nonexistent $x)
fi
done
else
implied=
fi
# Add NAME to the list of names.
names="$names $name"
# Find the parent of NAME, using the empty string if it has none.
changequote(,)dnl
parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`"
changequote([,])dnl
# Add the names implied by NAME, and NAME's parent (if it has one), to
# the list of names to be processed (the argument list). We prepend the
# implied names to the list and append the parent. We want implied
# directories to come before further directories inferred from the
# configuration components; this ensures that for sysv4, unix/common
# (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*)
# after sysv4).
sysnames="`echo $implied $* $parent`"
test -n "$sysnames" && set $sysnames
done
# Add the default directories.
default_sysnames=sysdeps/generic
if test "$elf" = yes; then
default_sysnames="sysdeps/generic/elf $default_sysnames"
fi
sysnames="$names $default_sysnames"
AC_SUBST(sysnames)
# The other names were emitted during the scan.
AC_MSG_RESULT($default_sysnames)
### Locate tools.
AC_PROG_INSTALL
if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then
# The makefiles need to use a different form to find it in $srcdir.
INSTALL='\$(..)./scripts/install-sh -c'
fi
AC_PROG_LN_S
# We need the physical current working directory. We cannot use the
# "pwd -P" shell builtin since that's not portable. Instead we try to
# find a pwd binary. Note that assigning to the PWD environment
# variable might have some interesting side effects, so we don't do
# that.
AC_PATH_PROG(PWD_P, pwd, no)
if test "$PWD_P" = no; then
AC_MSG_ERROR(*** A pwd binary could not be found.)
fi
# These programs are version sensitive.
AC_REQUIRE([AC_CHECK_TOOL_PREFIX])dnl
AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v,
[version \([egcygnustpi-]*[0-9.]*\)],
[*gcc-2.9[5-9].*|*2.8.[1-9]*|*2.9|*2.9.[0-9]*|2.9[5-9]*|3.[0-9]*|cygnus-2.9[1-9]*|gcc-2.9[5-9]|gcc-2.1[0-9][0-9]|sgicc-*],
critic_missing=gcc)
AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version,
[GNU Make[^0-9]*\([0-9][0-9.]*\)],
[3.79* | 3.[89]*], critic_missing="$critic_missing make")
if test -n "$critic_missing"; then
AC_MSG_ERROR([
*** These critical programs are missing or too old:$critic_missing
*** Check the INSTALL file for required versions.])
fi
AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version,
[GNU gettext.* \([0-9]*\.[0-9.]*\)],
[0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*],
MSGFMT=: aux_missing="$aux_missing msgfmt")
AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
[GNU texinfo.* \([0-9][0-9.]*\)],
[4.*],
MAKEINFO=: aux_missing="$aux_missing makeinfo")
AC_CHECK_PROG_VER(SED, sed, --version,
[GNU sed version \([0-9]*\.[0-9.]*\)],
[3.0[2-9]*|3.[1-9]*|[4-9]*],
SED=: aux_missing="$aux_missing sed")
AC_PROG_CC_LOCAL
AC_CANONICAL_BUILD
if test $host != $build; then
AC_CHECK_PROGS(BUILD_CC, gcc cc)
fi
AC_SUBST(cross_compiling)
AC_PROG_CPP
LIBC_PROG_BINUTILS
AC_CHECK_TOOL(MIG, mig)
# Accept binutils 2.10.1 or newer (and also any ia64 2.9 version)
# XXX Commented out because it filters out too many good versions.
# XXX --drepper
# AC_CHECK_PROG_VER(AS, $AS, --version,
# [GNU assembler.* \([0-9]*\.[0-9.]*\(-ia64-[0-9]*\)*\)],
# [2.10.[1-9]* | 2.1[1-9]* | 2.9-ia64-*], AS=: critic_missing=t)
test -n "$aux_missing" && AC_MSG_WARN([
*** These auxiliary programs are missing or too old:$aux_missing
*** some features will be disabled.
*** Check the INSTALL file for required versions.])
# glibcbug.in wants to know the compiler version.
CCVERSION=`$CC -v 2>&1 | sed -n 's/gcc version //p'`
AC_SUBST(CCVERSION)
# if using special system headers, find out the compiler's sekrit
# header directory and add that to the list. NOTE: Only does the right
# thing on a system that doesn't need fixincludes. (Not presently a problem.)
if test -n "$sysheaders"; then
ccheaders=`$CC -print-file-name=include`
SYSINCLUDES="-nostdinc -isystem $ccheaders -isystem $sysheaders"
fi
AC_SUBST(SYSINCLUDES)
# check if ranlib is necessary
AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl
cat > conftest.c <<EOF
int a;
char b;
void c(void) {}
EOF
$CC $CFLAGS -c conftest.c
$AR cr conftest.a conftest.c
cp conftest.a conftest2.a
$RANLIB conftest.a
if cmp -s conftest.a conftest2.a; then
libc_cv_ranlib_necessary=no
else
libc_cv_ranlib_necessary=yes
fi
rm -rf conftest*])
if test "$libc_cv_ranlib_necessary" = no; then
RANLIB=:
fi
# Test if LD_LIBRARY_PATH contains the notation for the current directory
# since this would lead to problems installing/building glibc.
# LD_LIBRARY_PATH contains the current directory if one of the following
# is true:
# - one of the terminals (":" and ";") is the first or last sign
# - two terminals occur directly after each other
# - the path contains an element with a dot in it
AC_MSG_CHECKING(LD_LIBRARY_PATH variable)
changequote(,)dnl
case ${LD_LIBRARY_PATH} in
[:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
ld_library_path_setting="contains current directory"
;;
*)
ld_library_path_setting="ok"
;;
esac
changequote([,])dnl
AC_MSG_RESULT($ld_library_path_setting)
if test "$ld_library_path_setting" != "ok"; then
AC_MSG_ERROR([
*** LD_LIBRARY_PATH shouldn't contain the current directory when
*** building glibc. Please change the environment variable
*** and run configure again.])
fi
AC_CACHE_CHECK(whether GCC supports -static-libgcc, libc_cv_gcc_static_libgcc, [dnl
if $CC -v -static-libgcc 2>&1 | grep -q 'unrecognized option.*static-libgcc'; then
libc_cv_gcc_static_libgcc=
else
libc_cv_gcc_static_libgcc=-static-libgcc
fi])
AC_SUBST(libc_cv_gcc_static_libgcc)
AC_PATH_PROG(BASH, bash, no)
if test "$BASH" != no &&
$BASH -c 'test "$BASH_VERSINFO" \
&& test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then
libc_cv_have_bash2=yes
else
libc_cv_have_bash2=no
fi
AC_SUBST(libc_cv_have_bash2)
dnl We need a ksh compatible shell for tzselect.
if test "$BASH" = no; then
AC_PATH_PROG(KSH, ksh, no)
if test "$KSH" = no; then
libc_cv_have_ksh=no
else
libc_cv_have_ksh=yes
fi
else
KSH="$BASH"
AC_SUBST(KSH)
libc_cv_have_ksh=yes
fi
AC_SUBST(libc_cv_have_ksh)
AC_PROG_AWK
AC_PATH_PROG(PERL, perl, no)
if test "$PERL" != no &&
(eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then
PERL=no
fi
AC_PATH_PROG(INSTALL_INFO, install-info, no,
$PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin)
if test "$INSTALL_INFO" != "no"; then
AC_CACHE_CHECK(for old Debian install-info, libc_cv_old_debian_install_info,
[mkdir conftest.d
# There is a hard ^_ on the next line. I am open to better ideas.
(echo ''
echo 'File: dir Node: Top This is the top of the INFO tree'
echo '* Menu:') >conftest.d/dir
(echo 'INFO-DIR-SECTION i-d-s works'
echo 'START-INFO-DIR-ENTRY'
echo '* Prog: (prog). Program.'
echo 'END-INFO-DIR-ENTRY') >conftest.d/prog.info
if $INSTALL_INFO --info-dir=conftest.d conftest.d/prog.info >&AC_FD_CC 2>&1
then
if grep -s 'i-d-s works' conftest.d/dir >/dev/null
then libc_cv_old_debian_install_info=no
else libc_cv_old_debian_install_info=yes
fi
else libc_cv_old_debian_install_info=no testfailed=t
fi
rm -fr conftest.d])
if test -n "$testfailed"
then AC_MSG_WARN([install-info errored out, check config.log])
fi
OLD_DEBIAN_INSTALL_INFO=$libc_cv_old_debian_install_info
fi
AC_SUBST(OLD_DEBIAN_INSTALL_INFO)
AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin)
AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl
echo '#include <stddef.h>
FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c
if eval "$ac_cpp conftest.c 2>/dev/null" \
| grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then
libc_cv_signed_size_t=no
else
libc_cv_signed_size_t=yes
fi
rm -f conftest*])
if test $libc_cv_signed_size_t = yes; then
dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings.
cat >> confdefs.h <<\EOF
#undef __SIZE_TYPE__
#define __SIZE_TYPE__ unsigned
EOF
fi
AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl
AC_TRY_COMPILE(dnl
[#define __need_size_t
#define __need_wchar_t
#include <stddef.h>
#define __need_NULL
#include <stddef.h>], [size_t size; wchar_t wchar;
#ifdef offsetof
#error stddef.h ignored __need_*
#endif
if (&size == NULL || &wchar == NULL) abort ();],
libc_cv_friendly_stddef=yes,
libc_cv_friendly_stddef=no)])
if test $libc_cv_friendly_stddef = yes; then
config_vars="$config_vars
override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
fi
AC_CACHE_CHECK(whether we need to use -P to assemble .S files,
libc_cv_need_minus_P, [dnl
cat > conftest.S <<EOF
#include "confdefs.h"
/* Nothing whatsoever. */
EOF
if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then
libc_cv_need_minus_P=no
else
libc_cv_need_minus_P=yes
fi
rm -f conftest*])
if test $libc_cv_need_minus_P = yes; then
config_vars="$config_vars
asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
fi
AC_MSG_CHECKING(whether .text pseudo-op must be used)
AC_CACHE_VAL(libc_cv_dot_text, [dnl
cat > conftest.s <<EOF
.text
EOF
libc_cv_dot_text=
if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
libc_cv_dot_text=.text
fi
rm -f conftest*])
if test -z "$libc_cv_dot_text"; then
AC_MSG_RESULT(no)
else
AC_MSG_RESULT(yes)
fi
AC_CACHE_CHECK(for assembler global-symbol directive,
libc_cv_asm_global_directive, [dnl
libc_cv_asm_global_directive=UNKNOWN
for ac_globl in .globl .global .EXPORT; do
cat > conftest.s <<EOF
${libc_cv_dot_text}
${ac_globl} foo
foo:
EOF
if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
libc_cv_asm_global_directive=${ac_globl}
fi
rm -f conftest*
test $libc_cv_asm_global_directive != UNKNOWN && break
done])
if test $libc_cv_asm_global_directive = UNKNOWN; then
AC_MSG_ERROR(cannot determine asm global directive)
else
AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive})
fi
AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl
cat > conftest.s <<EOF
${libc_cv_dot_text}
foo:
.set glibc_conftest_frobozz,foo
$libc_cv_asm_global_directive glibc_conftest_frobozz
EOF
# The alpha-dec-osf1 assembler gives only a warning for `.set'
# (but it doesn't work), so we must do a linking check to be sure.
cat > conftest1.c <<\EOF
extern int glibc_conftest_frobozz;
main () { printf ("%d\n", glibc_conftest_frobozz); }
EOF
if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
-o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then
libc_cv_asm_set_directive=yes
else
libc_cv_asm_set_directive=no
fi
rm -f conftest*])
if test $libc_cv_asm_set_directive = yes; then
AC_DEFINE(HAVE_ASM_SET_DIRECTIVE)
fi
# The Aix ld uses global .symbol_names instead of symbol_names.
case "$os" in
aix4.3*)
AC_DEFINE(HAVE_ASM_GLOBAL_DOT_NAME)
esac
AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive,
[cat > conftest.s <<EOF
${libc_cv_dot_text}
_sym:
.symver _sym,sym@VERS
EOF
if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then
libc_cv_asm_symver_directive=yes
else
libc_cv_asm_symver_directive=no
fi
rm -f conftest*])
AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl
if test $libc_cv_asm_symver_directive = yes; then
cat > conftest.s <<EOF
${libc_cv_dot_text}
_sym:
.symver _sym,sym@VERS
EOF
cat > conftest.map <<EOF
VERS_1 {
global: sym;
};
VERS_2 {
global: sym;
} VERS_1;
EOF
if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then
if AC_TRY_COMMAND([${CC-cc} $CFLAGS -shared -o conftest.so conftest.o
-nostartfiles -nostdlib
-Wl,--version-script,conftest.map
1>&AC_FD_CC]);
then
libc_cv_ld_version_script_option=yes
else
libc_cv_ld_version_script_option=no
fi
else
libc_cv_ld_version_script_option=no
fi
else
libc_cv_ld_version_script_option=no
fi
rm -f conftest*])
if test $shared != no &&
test $libc_cv_asm_symver_directive = yes &&
test $libc_cv_ld_version_script_option = yes &&
test $enable_versioning = yes; then
VERSIONING=yes
AC_DEFINE(DO_VERSIONING)
else
VERSIONING=no
fi
AC_SUBST(VERSIONING)
if test $elf = yes && test $shared != no && test $VERSIONING = no; then
echo "\
*** WARNING: You should not compile GNU libc without versioning. Not using
*** versioning will introduce incompatibilities so that old binaries
*** will not run anymore.
*** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)."
fi
if test $elf = yes; then
AC_CACHE_CHECK(for .previous assembler directive,
libc_cv_asm_previous_directive, [dnl
cat > conftest.s <<EOF
.section foo_section
.previous
EOF
if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
libc_cv_asm_previous_directive=yes
else
libc_cv_asm_previous_directive=no
fi
rm -f conftest*])
if test $libc_cv_asm_previous_directive = yes; then
AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE)
else
AC_CACHE_CHECK(for .popsection assembler directive,
libc_cv_asm_popsection_directive, [dnl
cat > conftest.s <<EOF
.pushsection foo_section
.popsection
EOF
if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
libc_cv_asm_popsection_directive=yes
else
libc_cv_asm_popsection_directive=no
fi
rm -f conftest*])
if test $libc_cv_asm_popsection_directive = yes; then
AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE)
fi
fi
AC_CACHE_CHECK(for .protected and .hidden assembler directive,
libc_cv_asm_protected_directive, [dnl
cat > conftest.s <<EOF
.protected foo
foo:
.hidden bar
bar:
EOF
if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
libc_cv_asm_protected_directive=yes
else
libc_cv_asm_protected_directive=no
fi
rm -f conftest*])
AC_SUBST(libc_cv_asm_protected_directive)
AC_DEFINE(HAVE_PROTECTED)
if test $libc_cv_asm_protected_directive = yes; then
AC_CACHE_CHECK(whether __attribute__((visibility())) is supported,
libc_cv_visibility_attribute,
[cat > conftest.c <<EOF
int foo __attribute__ ((visibility ("hidden"))) = 1;
int bar __attribute__ ((visibility ("protected"))) = 1;
EOF
libc_cv_visibility_attribute=no
if ${CC-cc} -Werror -S conftest.c -o conftest.s >/dev/null 2>&1; then
if grep '\.hidden.*foo' conftest.s >/dev/null; then
if grep '\.protected.*bar' conftest.s >/dev/null; then
libc_cv_visibility_attribute=yes
fi
fi
fi
rm -f conftest.[cs]
])
if test $libc_cv_visibility_attribute = yes; then
AC_DEFINE(HAVE_VISIBILITY_ATTRIBUTE)
fi
fi
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} -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \
| grep '\.sdata' >/dev/null; then
libc_cv_have_sdata_section=yes
fi
rm -f conftest.c conftest.so
])
if test $libc_cv_have_sdata_section = yes; then
AC_DEFINE(HAVE_SDATA_SECTION)
fi
fi
AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
libc_cv_initfinit_array, [dnl
cat > conftest.c <<EOF
int _start (void) { return 0; }
int __start (void) { return 0; }
int foo (void) { return 1; }
int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;
EOF
if AC_TRY_COMMAND([${CC-cc} -o conftest conftest.c
-static -nostartfiles -nostdlib 1>&AC_FD_CC])
then
if readelf -S conftest | fgrep INIT_ARRAY > /dev/null; then
libc_cv_initfinit_array=yes
else
libc_cv_initfinit_array=no
fi
else
libc_cv_initfinit_array=no
fi
rm -f conftest*])
AC_SUBST(libc_cv_initfinit_array)
if test $libc_cv_initfinit_array = yes; then
AC_DEFINE(HAVE_INITFINI_ARRAY)
fi
AC_CACHE_CHECK(for -z nodelete option,
libc_cv_z_nodelete, [dnl
cat > conftest.c <<EOF
int _start (void) { return 42; }
EOF
if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c
-nostartfiles -nostdlib
-Wl,--enable-new-dtags,-z,nodelete 1>&AC_FD_CC])
then
libc_cv_z_nodelete=yes
else
libc_cv_z_nodelete=no
fi
rm -f conftest*])
AC_SUBST(libc_cv_z_nodelete)
AC_CACHE_CHECK(for -z nodlopen option,
libc_cv_z_nodlopen, [dnl
cat > conftest.c <<EOF
int _start (void) { return 42; }
EOF
if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c
-nostartfiles -nostdlib
-Wl,--enable-new-dtags,-z,nodlopen 1>&AC_FD_CC])
then
libc_cv_z_nodlopen=yes
else
libc_cv_z_nodlopen=no
fi
rm -f conftest*])
AC_SUBST(libc_cv_z_nodlopen)
AC_CACHE_CHECK(for -z initfirst option,
libc_cv_z_initfirst, [dnl
cat > conftest.c <<EOF
int _start (void) { return 42; }
EOF
if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c
-nostartfiles -nostdlib
-Wl,--enable-new-dtags,-z,initfirst 1>&AC_FD_CC])
then
libc_cv_z_initfirst=yes
else
libc_cv_z_initfirst=no
fi
rm -f conftest*])
AC_SUBST(libc_cv_z_initfirst)
AC_CACHE_CHECK(for -Bgroup option,
libc_cv_Bgroup, [dnl
cat > conftest.c <<EOF
int _start (void) { return 42; }
EOF
if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,-Bgroup -nostdlib 1>&AC_FD_CC])
then
libc_cv_Bgroup=yes
else
libc_cv_Bgroup=no
fi
rm -f conftest*])
AC_SUBST(libc_cv_Bgroup)
AC_CACHE_CHECK(for -z combreloc,
libc_cv_z_combreloc, [dnl
cat > conftest.c <<EOF
extern int bar (int);
extern int mumble;
int foo (void) { return bar (mumble); }
EOF
if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c
-nostdlib -nostartfiles
-Wl,-z,combreloc 1>&AC_FD_CC])
then
dnl The following test is a bit weak. We must use a tool which can test
dnl cross-platform since the gcc used can be a cross compiler. Without
dnl introducing new options this is not easily doable. Instead use a tool
dnl which always is cross-platform: readelf. To detect whether -z combreloc
dnl look for a section named .rel.dyn.
if readelf -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then
libc_cv_z_combreloc=yes
else
libc_cv_z_combreloc=no
fi
else
libc_cv_z_combreloc=no
fi
rm -f conftest*])
if test "$libc_cv_z_combreloc" = yes; then
AC_DEFINE(HAVE_Z_COMBRELOC)
fi
fi
AC_SUBST(libc_cv_z_combreloc)
if test $elf != yes; then
AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini,
[AC_TRY_COMPILE(, [asm (".section .init");
asm (".section .fini");
asm ("${libc_cv_dot_text}");],
libc_cv_have_initfini=yes,
libc_cv_have_initfini=no)])
AC_SUBST(libc_cv_have_initfini)dnl
if test $libc_cv_have_initfini = yes; then
AC_DEFINE(HAVE_INITFINI)
fi
fi
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
static const int foo
__attribute__ ((section ("bar"))) = 1;
EOF
if ${CC-cc} -S conftest.c -o conftest.s; then
if grep '\.section.*"bar"' conftest.s >/dev/null; then
libc_cv_have_section_quotes=yes
else
libc_cv_have_section_quotes=no
fi
else
libc_cv_have_section_quotes=unknown
fi
rm -f conftest.[cs]
])
if test $libc_cv_have_section_quotes = yes; then
AC_DEFINE(HAVE_SECTION_QUOTES)
fi
fi
dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
AC_DEFUN(AC_CHECK_ASM_UNDERSCORE,
[cat > conftest.$ac_ext <<EOF
dnl This sometimes fails to find confdefs.h, for some reason.
dnl [#]line __oline__ "[$]0"
[#]line __oline__ "configure"
#include "confdefs.h"
void underscore_test(void) {
return; }
EOF
if AC_TRY_EVAL(ac_compile); then
if grep _underscore_test conftest* >/dev/null; then
ifelse([$1], , :, [rm -f conftest*
$1])
else
ifelse([$2], , , [rm -f conftest*
$2])
fi
else
echo "configure: failed program was:" >&AC_FD_CC
cat conftest.$ac_ext >&AC_FD_CC
ifelse([$2], , , [rm -f conftest*
$2])
fi
rm -f conftest*])
if test $elf = yes; then
libc_cv_asm_underscores=no
else
if test $ac_cv_prog_cc_works = yes; then
AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
[AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();],
libc_cv_asm_underscores=yes,
libc_cv_asm_underscores=no)])
else
AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
[AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes,
libc_cv_asm_underscores=no)])
fi
fi
if test $libc_cv_asm_underscores = no; then
AC_DEFINE(NO_UNDERSCORES)
fi
if test $elf = yes; then
libc_cv_weak_symbols=yes
fi
AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive,
[dnl
cat > conftest.s <<EOF
${libc_cv_dot_text}
${libc_cv_asm_global_directive} foo
foo:
.weak foo
.weak bar; bar = foo
EOF
if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
libc_cv_asm_weak_directive=yes
else
libc_cv_asm_weak_directive=no
fi
rm -f conftest*])
if test $libc_cv_asm_weak_directive = no; then
AC_CACHE_CHECK(for assembler .weakext directive,
libc_cv_asm_weakext_directive,
[dnl
cat > conftest.s <<EOF
${libc_cv_dot_text}
${libc_cv_asm_global_directive} foo
foo:
.weakext bar foo
.weakext baz
${libc_cv_asm_global_directive} baz
baz:
EOF
if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
libc_cv_asm_weakext_directive=yes
else
libc_cv_asm_weakext_directive=no
fi
rm -f conftest*])
fi # no .weak
if test $libc_cv_asm_weak_directive = yes; then
AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE)
elif test $libc_cv_asm_weakext_directive = yes; then
AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE)
fi
dnl The standard hppa assembler uses `;' to start comments and `!'
dnl as a line separator. CRIS uses `;' to start comments and `@' for
dnl line separator.
case "${host_cpu}-${host_os}" in
cris*)
libc_cv_asm_line_sep='@'
AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep)
;;
hppa*linux*)
AC_CACHE_CHECK(for assembler line separator,
libc_cv_asm_line_sep, [dnl
cat > conftest.s <<EOF
nop ; is_old_puffin
EOF
if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
libc_cv_asm_line_sep='!'
else
if test -z "$enable_hacker_mode"; then
echo "*** You need a newer assembler to compile glibc"
rm -f conftest*
exit 1
fi
libc_cv_asm_line_sep=';'
fi
rm -f conftest*])
AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep)
;;
esac
AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl
cat > conftest.c <<\EOF
_start () {}
int __eh_pc;
__throw () {}
EOF
dnl No \ in command here because it ends up inside ''.
if AC_TRY_COMMAND([${CC-cc} $CFLAGS
-nostdlib -nostartfiles -Wl,--no-whole-archive
-o conftest conftest.c 1>&AC_FD_CC]); then
libc_cv_ld_no_whole_archive=yes
else
libc_cv_ld_no_whole_archive=no
fi
rm -f conftest*])
if test $libc_cv_ld_no_whole_archive = yes; then
no_whole_archive=-Wl,--no-whole-archive
fi
AC_SUBST(no_whole_archive)dnl
AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl
cat > conftest.c <<\EOF
_start () {}
int __eh_pc;
__throw () {}
EOF
dnl No \ in command here because it ends up inside ''.
if AC_TRY_COMMAND([${CC-cc} $CFLAGS
-nostdlib -nostartfiles -fexceptions
-o conftest conftest.c 1>&AC_FD_CC]); then
libc_cv_gcc_exceptions=yes
else
libc_cv_gcc_exceptions=no
fi
rm -f conftest*])
if test $libc_cv_gcc_exceptions = yes; then
exceptions=-fexceptions
fi
AC_SUBST(exceptions)dnl
if test "$base_machine" = alpha ; then
AC_CACHE_CHECK(for function ..ng prefix, libc_cv_gcc_alpha_ng_prefix, [dnl
cat > conftest.c <<\EOF
foo () { }
EOF
dnl
if AC_TRY_COMMAND([${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null]);
then
libc_cv_gcc_alpha_ng_prefix=yes
else
libc_cv_gcc_alpha_ng_prefix=no
fi
rm -f conftest* ])
if test $libc_cv_gcc_alpha_ng_prefix = yes ; then
AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "$")
else
AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "")
fi
fi
if test "$host_cpu" = powerpc ; then
# Check for a bug present in at least versions 2.8.x of GCC
# and versions 1.0.x of EGCS.
AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl
AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],,
libc_cv_c_asmcr0_bug='no',
libc_cv_c_asmcr0_bug='yes')])
if test "$libc_cv_c_asmcr0_bug" != 'no'; then
AC_DEFINE(BROKEN_PPC_ASM_CR0)
fi
fi
AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info,
[cat > conftest.c <<EOF
#line __oline__ "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 () {}
EOF
dnl No \ in command here because it ends up inside ''.
if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame_info
-nostdlib -nostartfiles
-o conftest conftest.c -lgcc >&AC_FD_CC]); then
libc_cv_gcc_dwarf2_unwind_info=static
else
libc_cv_gcc_dwarf2_unwind_info=no
fi
if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame_info
-nostdlib -nostartfiles
-o conftest conftest.c -lgcc -lgcc_eh >&AC_FD_CC]); then
if ${CC-cc} $CFLAGS -DCHECK__register_frame_info -nostdlib -nostartfiles \
-o conftest conftest.c -lgcc -lgcc_eh -v 2>&1 >/dev/null \
| grep -q -- --eh-frame-hdr; 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 -DCHECK__register_frame
-nostdlib -nostartfiles
-o conftest conftest.c -lgcc >&AC_FD_CC]); then
libc_cv_gcc_dwarf2_unwind_info=yes
else
libc_cv_gcc_dwarf2_unwind_info=no
fi
fi
rm -f conftest*])
case $libc_cv_gcc_dwarf2_unwind_info in
yes)
AC_DEFINE(HAVE_DWARF2_UNWIND_INFO)
;;
static)
AC_DEFINE(HAVE_DWARF2_UNWIND_INFO)
AC_DEFINE(HAVE_DWARF2_UNWIND_INFO_STATIC)
;;
esac
dnl Check whether compiler understands __builtin_expect.
AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect,
[cat > conftest.c <<EOF
#line __oline__ "configure"
int foo (int a)
{
a = __builtin_expect (a, 10);
return a == 10 ? 0 : 1;
}
EOF
dnl No \ in command here because it ends up inside ''.
if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles
-o conftest conftest.c -lgcc >&AC_FD_CC]); then
libc_cv_gcc_builtin_expect=yes
else
libc_cv_gcc_builtin_expect=no
fi
rm -f conftest*])
if test "$libc_cv_gcc_builtin_expect" = yes; then
AC_DEFINE(HAVE_BUILTIN_EXPECT)
fi
AC_CACHE_CHECK(for __builtin_memset, libc_cv_gcc_builtin_memset, [dnl
cat > conftest.c <<\EOF
void zero (void *x)
{
__builtin_memset (x, 0, 1000);
}
EOF
dnl
if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null]);
then
libc_cv_gcc_builtin_memset=no
else
libc_cv_gcc_builtin_memset=yes
fi
rm -f conftest* ])
if test "$libc_cv_gcc_builtin_memset" = yes ; then
AC_DEFINE(HAVE_BUILTIN_MEMSET)
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 __oline__ "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} $CFLAGS -nostdlib -nostartfiles
-o conftest conftest.c -lgcc >&AC_FD_CC]); then
libc_cv_gcc_subtract_local_labels=yes
else
libc_cv_gcc_subtract_local_labels=no
fi
rm -f conftest*])
if test "$libc_cv_gcc_subtract_local_labels" = yes; then
AC_DEFINE(HAVE_SUBTRACT_LOCAL_LABELS)
fi
dnl Check whether we have the gd library available.
AC_MSG_CHECKING(for libgd)
if test "$with_gd" != "no"; then
old_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $libgd_include"
old_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS $libgd_ldflags"
old_LIBS="$LIBS"
LIBS="$LIBS -lgd -lpng -lz -lm"
AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no)
CFLAGS="$old_CFLAGS"
LDFLAGS="$old_LDFLAGS"
LIBS="$old_LIBS"
else
LIBGD=no
fi
AC_MSG_RESULT($LIBGD)
AC_SUBST(LIBGD)
dnl check for the size of 'long double'.
AC_CHECK_SIZEOF(long double, 0)
sizeof_long_double=$ac_cv_sizeof_long_double
AC_SUBST(sizeof_long_double)
### End of automated tests.
### Now run sysdeps configure fragments.
# sysdeps configure fragments may set these with files to be linked below.
libc_link_dests=
libc_link_sources=
# They also can set these variables.
use_ldconfig=no
ldd_rewrite_script=no
libc_cv_sysconfdir=$sysconfdir
libc_cv_gcc_unwind_find_fde=no
# Iterate over all the sysdep directories we will use, running their
# configure fragments, and looking for a uname implementation.
uname=
for dir in $sysnames; do
case $dir in
/*) dest=$dir ;;
*) dest=$srcdir/$dir ;;
esac
if test -r $dest/configure; then
AC_MSG_RESULT(running configure fragment for $dest)
. $dest/configure
fi
[
if test -z "$uname"; then
if test -r $dest/uname.c ||
test -r $dest/uname.S ||
{ test -r $dest/syscalls.list &&
grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then
uname=$dir
fi
fi
]dnl
done
if test x$libc_cv_gcc_unwind_find_fde = xyes; then
AC_DEFINE(EXPORT_UNWIND_FIND_FDE)
fi
AC_SUBST(libc_cv_gcc_unwind_find_fde)
AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`)
# If we will use the generic uname implementation, we must figure out what
# it will say by examining the system, and write the results in config-name.h.
if test "$uname" = "sysdeps/generic"; then
changequote(,)dnl
uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'`
changequote([,])dnl
if test $uname_sysname != $config_os; then
config_release=`echo $config_os | sed s/$uname_sysname//`
fi
dnl
AC_DEFUN(LIBC_KERNEL_ID, [dnl
if test -r /vmunix; then
kernel_id=`strings /vmunix | grep UNIX`
elif test -r /dynix; then
kernel_id=`strings /dynix | grep DYNIX`
else
kernel_id=
fi
])dnl
AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl
AC_REQUIRE([LIBC_KERNEL_ID])dnl
changequote(,)dnl
kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'`
changequote([,])dnl
if test x`echo "$config_release" | sed "s/^$kernel_release//"` \
!= x$config_release; then
# The configuration release is a substring of the kernel release.
libc_cv_uname_release=$kernel_release
elif test x$config_release != x; then
libc_cv_uname_release=$config_release
elif test x$kernel_release != x; then
libc_cv_uname_release=$kernel_release
else
libc_cv_uname_release=unknown
fi])
uname_release="$libc_cv_uname_release"
AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl
AC_REQUIRE([LIBC_KERNEL_ID])dnl
changequote(,)dnl
kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'`
changequote([,])dnl
if test -n "$kernel_version"; then
libc_cv_uname_version="$kernel_version"
else
libc_cv_uname_version=unknown
fi])
uname_version="$libc_cv_uname_version"
AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl
config_uname=config-name.h:config-name.in
else
# For non-generic uname, we don't need to create config-name.h at all.
config_uname=
fi
AC_MSG_CHECKING(stdio selection)
AC_SUBST(stdio)
case $stdio in
libio) AC_DEFINE(USE_IN_LIBIO) ;;
default) stdio=stdio ;;
esac
AC_MSG_RESULT($stdio)
# Test for old glibc 2.0.x headers so that they can be removed properly
# Search only in includedir.
AC_MSG_CHECKING(for old glibc 2.0.x headers)
if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h"
then
old_glibc_headers=yes
else
old_glibc_headers=no
fi
AC_MSG_RESULT($old_glibc_headers)
if test ${old_glibc_headers} = yes; then
AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will)
AC_MSG_WARN(*** be removed.)
fi
AC_SUBST(old_glibc_headers)
AC_SUBST(libc_cv_slibdir)
AC_SUBST(libc_cv_localedir)
AC_SUBST(libc_cv_sysconfdir)
AC_SUBST(libc_cv_rootsbindir)
AC_SUBST(use_ldconfig)
AC_SUBST(ldd_rewrite_script)
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
if test $xcoff = yes; then
AC_DEFINE(HAVE_XCOFF)
fi
AC_SUBST(static)
AC_SUBST(shared)
if test $shared = default; then
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
AC_CACHE_CHECK([whether -fPIC is default], pic_default,
[pic_default=yes
cat > conftest.c <<EOF
#if defined __PIC__ || defined __pic__ || defined PIC || defined pic
# error PIC is default.
#endif
EOF
if eval "${CC-cc} -S conftest.c 2>&AC_FD_CC 1>&AC_FD_CC"; then
pic_default=no
fi
rm -f conftest.*])
AC_SUBST(pic_default)
AC_SUBST(profile)
AC_SUBST(omitfp)
AC_SUBST(bounded)
AC_SUBST(static_nss)
AC_SUBST(nopic_initfini)
AC_SUBST(DEFINES)
case "$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)
if test "`(cd $srcdir; pwd)`" = "`pwd`"; then
config_makefile=
else
config_makefile=Makefile
fi
VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h`
RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h`
AC_SUBST(VERSION)
AC_SUBST(RELEASE)
AC_OUTPUT(config.make glibcbug ${config_makefile} ${config_uname}, [
case $CONFIG_FILES in *config.make*)
echo "$config_vars" >> config.make;;
esac
test -d bits || mkdir bits], [config_vars='$config_vars'])