glibc/configure.in
Ulrich Drepper 33a934a3ab update from main archive 970125
Sun Jan 26 05:41:42 1997  Ulrich Drepper  <drepper@cygnus.com>

	* version.h (VERSION): Bump to 2.0.
	(RELEASE): Now it's "experimental".

	* Makefile (subdirs): Change $(malloc) to malloc.  We have only
	one malloc implementation again.
	* malloc/*: Remove from GNU libc.
	* new-malloc/* Move to malloc/.
	* config.make.in (defines): Remove @USE_NEW_MALLOC@.
	* configure.in: Remove --enable-new-malloc option and check for
	malloc implementation choice.
	* malloc.h: We don't need to check for the implementation to use
	anymore.  Simply include malloc/malloc.h.
	* malloc/Makefile (subdir): Change to malloc.
	* sysdeps/unix/sysv/linux/configure.in: Don't set malloc anymore.

	* Makefile: Add special goal to call generate only-MD5 based crypt
	library.
	* md5-crypt/Makefile: Likewise.

	* stdio-common/tstscanf.c: De-ANSI-declfy.  Update copyright.
	(rounds): Change type to size_t to prevent warning.

	* wcsmbs/btowc.c: Reformat copyright.
	* wcsmbs/mbrlen.c: Likewise.
	* wcsmbs/mbsinit.c: Likewise.
	* wcsmbs/mbsnrtowcs.c: Likewise.
	* wcsmbs/mbsrtowcs.c: Likewise.
	* wcsmbs/wcpcpy.c: Likewise.
	* wcsmbs/wcpncpy.c: Likewise.
	* wcsmbs/wcscat.c: Likewise.
	* wcsmbs/wcscmp.c: Likewise.
	* wcsmbs/wcscoll.c: Likewise.
	* wcsmbs/wcscpy.c: Likewise.
	* wcsmbs/wcscspn.c: Likewise.
	* wcsmbs/wcsdup.c: Likewise.
	* wcsmbs/wcslen.c: Likewise.
	* wcsmbs/wcsncat.c: Likewise.
	* wcsmbs/wcsncpy.c: Likewise.
	* wcsmbs/wcsnrtombs.c: Likewise.
	* wcsmbs/wcsrtombs.c: Likewise.
	* wcsmbs/wcsspn.c: Likewise.
	* wcsmbs/wcsstr.c: Likewise.
	* wcsmbs/wcstod.c: Likewise.
	* wcsmbs/wcstof.c: Likewise.
	* wcsmbs/wcstok.c: Likewise.
	* wcsmbs/wcstol.c: Likewise.
	* wcsmbs/wcstold.c: Likewise.
	* wcsmbs/wcstoq.c: Likewise.
	* wcsmbs/wcstoul.c: Likewise.
	* wcsmbs/wcstouq.c: Likewise.
	* wcsmbs/wcswidth.c: Likewise.
	* wcsmbs/wcsxfrm.c: Likewise.
	* wcsmbs/wctob.c: Likewise.
	* wcsmbs/wcwidth.c: Likewise.
	* wcsmbs/wcwidth.h: Likewise.
	* wcsmbs/wmemchr.c: Likewise.
	* wcsmbs/wmemcmp.c: Likewise.
	* wcsmbs/wmemmove.c: Likewise.
	* wcsmbs/wmemset.c: Likewise.

Sat Jan 25 03:34:14 1997  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/termbits.h: Protect against multiple
	inclusion.  Reported by a sun <asun@zoology.washington.edu>.

	Likewise for scanf4.c
	* stdlib/stdlib.h: Declare reentrant function from rand48 family
1997-01-26 05:33:35 +00:00

772 lines
21 KiB
Plaintext

Dnl Process this file with autoconf to produce a configure script.
AC_REVISION([$CVSid$])
AC_PREREQ(2.11)dnl dnl Minimum Autoconf version required.
AC_INIT(features.h)
AC_CONFIG_HEADER(config.h)
# 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 = $withval" ;;
esac
])
# Check for a --with-gettext argument and set gettext-srcdir in config.make.
AC_ARG_WITH(gettext, dnl
--with-gettext=DIR find GNU gettext source code in DIR (not needed),
[dnl
case "$with_gettext" in
yes)
AC_MSG_ERROR(--with-gettext requires an argument; use --with-gettext=DIR) ;;
''|no) ;;
*)
config_vars="$config_vars
gettext-srcdir = $withval" ;;
esac
])
dnl Arguments to specify presence of other packages/features.
AC_ARG_WITH(fp, dnl
[ --with-fp if using floating-point hardware [default=yes]],
with_fp=$withval, with_fp=yes)
AC_ARG_WITH(gnu-binutils, dnl
--with-gnu-binutils if using GNU binutils (as and ld),
gnu_binutils=$withval, gnu_binutils=no)
AC_ARG_WITH(gnu-ld, dnl
--with-gnu-ld if using GNU ld (in the binutils package),
gnu_ld=$withval, gnu_ld=no)
AC_ARG_WITH(gnu-as, dnl
--with-gnu-as if using GNU as (in the binutils package),
gnu_as=$withval, gnu_as=no)
test $gnu_binutils = yes && gnu_as=yes gnu_ld=yes
AC_ARG_WITH(elf, dnl
--with-elf if using the ELF object format,
elf=$withval, elf=no)
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 shared, profiled, and
dnl -fomit-frame-pointer libraries.
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=$enableval, omitfp=no)
dnl Generic infrastructure for drop-in additions to libc.
AC_ARG_ENABLE(add-ons, dnl
[ --enable-add-ons=DIR... configure and build named extra directories],
[add_ons=`echo "$enableval" | sed 's/,/ /g'`],
[add_ons=])
AC_CONFIG_SUBDIRS($add_ons)
add_ons_pfx=
if test x"$add_ons" != x; then
for f in $add_ons; do
add_ons_pfx="$add_ons_pfx $f/"
done
fi
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
# 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
linux*ecoff*)
;;
gnu* | linux* | sysv4* | solaris2*)
# These systems (almost) always use the ELF format.
elf=yes
;;
esac
machine=$config_machine
vendor=$config_vendor
os=$config_os
dnl We need to use [ and ] for other purposes for a while now.
changequote(,)dnl
# Expand the configuration machine name into a subdirectory by architecture
# type and particular chip.
case "$machine" in
a29k | am29000) base_machine=a29k machine=a29k ;;
alpha*) base_machine=alpha machine=alpha/$machine ;;
hppa*) base_machine=hppa machine=hppa/$machine ;;
i[3456]86) base_machine=i386 machine=i386/$machine ;;
m680?0) base_machine=m68k machine=m68k/$machine ;;
m68k) base_machine=m68k machine=m68k/m68020 ;;
m88???) base_machine=m88k machine=m88k/$machine ;;
m88k) base_machine=m88k machine=m88k/m88100 ;;
mips*) base_machine=mips machine=mips/$machine ;;
mips64*) base_machine=mips64 machine=mips/mips64/$machine ;;
sparc[6789]) base_machine=sparc machine=sparc/$machine ;;
supersparc) base_machine=sparc machine=sparc/sparc8 ;;
esac
changequote([,])dnl
AC_SUBST(base_machine)
# 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 "$os" in
gnu*)
base_os=mach/hurd ;;
netbsd* | 386bsd* | freebsd* | bsdi*)
base_os=unix/bsd/bsd4.4 ;;
osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*)
base_os=unix/bsd ;;
sysv* | isc* | esix* | sco* | minix* | irix4* | linux*)
base_os=unix/sysv ;;
solaris[2-9]*)
base_os=unix/sysv/sysv4 ;;
none)
base_os=standalone ;;
*)
base_os='' ;;
esac
# For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos.
tail=$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="$2"
done
# For sparc/sparc9, try sparc/sparc9 and then sparc.
mach=
tail=$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
for o in /$ostry ''; do
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
case $try in
/*) dest=$try ;;
*) dest=$srcdir/$try ;;
esac
if test -d $dest; then
sysnames="$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
case $d in
/*) xsrcdir= ;;
*) xsrcdir=$srcdir/ ;;
esac
for m in $mach; do
if test -d $xsrcdir${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
if test -d $xsrcdir$name_base/$x; then
implied="$implied $name_base/$x";
else
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 $sysnames
done
# Add the default directories.
sysnames="$names sysdeps/generic sysdeps/stub"
AC_SUBST(sysnames)
# The other names were emitted during the scan.
AC_MSG_RESULT(sysdeps/generic sysdeps/stub)
### Locate tools.
AC_PROG_INSTALL
if test "$INSTALL" = "${srcdir}/install-sh -c"; then
# The makefiles need to use a different form to find it in $srcdir.
INSTALL='$(..)./install-sh -c'
fi
AC_PROG_LN_S
AC_CHECK_PROGS(MSGFMT, msgfmt gmsgfmt, :)
AC_CHECK_TOOL(CC, gcc)
if test $host != $build; then
AC_CHECK_PROG(BUILD_CC, gcc cc)
fi
AC_PROG_CPP
AC_CHECK_TOOL(AR, ar)
AC_CHECK_TOOL(RANLIB, ranlib, :)
AC_PATH_PROG(BASH, bash, no)
if test "$BASH" != no &&
$BASH -c 'test "$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="$BASH"
AC_SUBST(KSH)
libc_cv_have_ksh=yes
fi
AC_SUBST(libc_cv_have_ksh)
AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl
echo '#include <stddef.h>
FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c
if eval "$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_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; do
cat > conftest.s <<EOF
.text
${ac_globl} foo
foo: .long 0
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
.text
foo: .long 0
.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
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
fi
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 (".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; then
libc_cv_asm_underscores=no
else
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)])
fi
if test $libc_cv_asm_underscores = no; then
AC_DEFINE(NO_UNDERSCORES)
fi
if test $elf = yes; then
libc_cv_weak_symbols=yes
libc_cv_asm_weak_directive=yes
libc_cv_asm_weakext_directive=no
else
AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive,
[dnl
cat > conftest.s <<EOF
.text
${libc_cv_asm_global_directive} foo
foo: .long 0
.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
.text
${libc_cv_asm_global_directive} foo
foo: .long 0
.weakext foo
.weakext foo, bar
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
fi # not ELF
if test $libc_cv_asm_weak_directive = yes; then
AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE)
elif test $libc_cv_asm_weakext_directive = yes; then
AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE)
fi
AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl
cat > conftest.c <<\EOF
_start () {}
int __eh_pc;
__throw () {}
EOF
dnl No \ in command here because it ends up inside ''.
if AC_TRY_COMMAND([${CC-cc} $CFLAGS
-nostdlib -nostartfiles -Wl,--no-whole-archive
-o conftest conftest.c]); then
libc_cv_ld_no_whole_archive=yes
else
libc_cv_ld_no_whole_archive=no
fi
rm -f conftest*])
AC_SUBST(libc_cv_ld_no_whole_archive)dnl
AC_CACHE_CHECK(for gcc -fno-exceptions, libc_cv_gcc_no_exceptions, [dnl
cat > conftest.c <<\EOF
_start () {}
int __eh_pc;
__throw () {}
EOF
dnl No \ in command here because it ends up inside ''.
if AC_TRY_COMMAND([${CC-cc} $CFLAGS
-nostdlib -nostartfiles -fno-exceptions
-o conftest conftest.c]); then
libc_cv_gcc_no_exceptions=yes
else
libc_cv_gcc_no_exceptions=no
fi
rm -f conftest*])
AC_SUBST(libc_cv_gcc_no_exceptions)dnl
### 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=
# 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 $sysdep_dir/$dir/uname.c ||
test -r $sysdep_dir/$dir/uname.S ||
{ test -r $sysdep_dir/$dir/syscalls.list &&
grep '^uname[ ]' $sysdep_dir/$dir/syscalls.list >/dev/null; }; then
uname=$dir
fi
fi
]dnl
done
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" = 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)
AC_SUBST(libc_cv_slibdir)
AC_SUBST(libc_cv_sysconfdir)
AC_SUBST(libc_cv_rootsbindir)
AC_SUBST(has_ldconfig)
AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf)
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
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_SUBST(profile)
AC_SUBST(omitfp)
AC_SUBST(DEFINES)
if test "`(cd $srcdir; pwd)`" = "`pwd`"; then
config_makefile=
else
config_makefile=Makefile
fi
VERSION=`sed -e 's/^#define VERSION "\([^"]*\)"/\1/p' -e d < $srcdir/version.h`
AC_SUBST(VERSION)
AC_OUTPUT(config.make glibcbug ${config_makefile} ${config_uname}, ,
[echo '$config_vars' >> config.make])