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ltconfig
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ltconfig
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#! /bin/sh
# ltconfig - Create a system-specific libtool.
# Copyright (C) 1996-1999 Free Software Foundation, Inc.
# Originally by Gordon Matzigkeit <[email protected]>, 1996
#
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
# A lot of this script is taken from autoconf-2.10.
# Check that we are running under the correct shell.
SHELL=${CONFIG_SHELL-/bin/sh}
echo=echo
if test "X$1" = X--no-reexec; then
# Discard the --no-reexec flag, and continue.
shift
elif test "X$1" = X--fallback-echo; then
# Avoid inline document here, it may be left over
:
elif test "X`($echo '\t') 2>/dev/null`" = 'X\t'; then
# Yippee, $echo works!
:
else
# Restart under the correct shell.
exec "$SHELL" "$0" --no-reexec ${1+"$@"}
fi
if test "X$1" = X--fallback-echo; then
# used as fallback echo
shift
cat <<EOF
$*
EOF
exit 0
fi
# Find the correct PATH separator. Usually this is `:', but
# DJGPP uses `;' like DOS.
if test "X${PATH_SEPARATOR+set}" != Xset; then
UNAME=${UNAME-`uname 2>/dev/null`}
case X$UNAME in
*-DOS) PATH_SEPARATOR=';' ;;
*) PATH_SEPARATOR=':' ;;
esac
fi
# The HP-UX ksh and POSIX shell print the target directory to stdout
# if CDPATH is set.
if test "X${CDPATH+set}" = Xset; then CDPATH=:; export CDPATH; fi
if test "X${echo_test_string+set}" != Xset; then
# find a string as large as possible, as long as the shell can cope with it
for cmd in 'sed 50q "$0"' 'sed 20q "$0"' 'sed 10q "$0"' 'sed 2q "$0"' 'echo test'; do
# expected sizes: less than 2Kb, 1Kb, 512 bytes, 16 bytes, ...
if (echo_test_string="`eval $cmd`") 2>/dev/null &&
echo_test_string="`eval $cmd`" &&
(test "X$echo_test_string" = "X$echo_test_string") 2>/dev/null; then
break
fi
done
fi
if test "X`($echo '\t') 2>/dev/null`" != 'X\t' ||
test "X`($echo "$echo_test_string") 2>/dev/null`" != X"$echo_test_string"; then
# The Solaris, AIX, and Digital Unix default echo programs unquote
# backslashes. This makes it impossible to quote backslashes using
# echo "$something" | sed 's/\\/\\\\/g'
#
# So, first we look for a working echo in the user's PATH.
IFS="${IFS= }"; save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR}"
for dir in $PATH /usr/ucb; do
if (test -f $dir/echo || test -f $dir/echo$ac_exeext) &&
test "X`($dir/echo '\t') 2>/dev/null`" = 'X\t' &&
test "X`($dir/echo "$echo_test_string") 2>/dev/null`" = X"$echo_test_string"; then
echo="$dir/echo"
break
fi
done
IFS="$save_ifs"
if test "X$echo" = Xecho; then
# We didn't find a better echo, so look for alternatives.
if test "X`(print -r '\t') 2>/dev/null`" = 'X\t' &&
test "X`(print -r "$echo_test_string") 2>/dev/null`" = X"$echo_test_string"; then
# This shell has a builtin print -r that does the trick.
echo='print -r'
elif (test -f /bin/ksh || test -f /bin/ksh$ac_exeext) &&
test "X$CONFIG_SHELL" != X/bin/ksh; then
# If we have ksh, try running ltconfig again with it.
ORIGINAL_CONFIG_SHELL="${CONFIG_SHELL-/bin/sh}"
export ORIGINAL_CONFIG_SHELL
CONFIG_SHELL=/bin/ksh
export CONFIG_SHELL
exec "$CONFIG_SHELL" "$0" --no-reexec ${1+"$@"}
else
# Try using printf.
echo='printf "%s\n"'
if test "X`($echo '\t') 2>/dev/null`" = 'X\t' &&
test "X`($echo "$echo_test_string") 2>/dev/null`" = X"$echo_test_string"; then
# Cool, printf works
:
elif test "X`("$ORIGINAL_CONFIG_SHELL" "$0" --fallback-echo '\t') 2>/dev/null`" = 'X\t' &&
test "X`("$ORIGINAL_CONFIG_SHELL" "$0" --fallback-echo "$echo_test_string") 2>/dev/null`" = X"$echo_test_string"; then
CONFIG_SHELL="$ORIGINAL_CONFIG_SHELL"
export CONFIG_SHELL
SHELL="$CONFIG_SHELL"
export SHELL
echo="$CONFIG_SHELL $0 --fallback-echo"
elif test "X`("$CONFIG_SHELL" "$0" --fallback-echo '\t') 2>/dev/null`" = 'X\t' &&
test "X`("$CONFIG_SHELL" "$0" --fallback-echo "$echo_test_string") 2>/dev/null`" = X"$echo_test_string"; then
echo="$CONFIG_SHELL $0 --fallback-echo"
else
# maybe with a smaller string...
prev=:
for cmd in 'echo test' 'sed 2q "$0"' 'sed 10q "$0"' 'sed 20q "$0"' 'sed 50q "$0"'; do
if (test "X$echo_test_string" = "X`eval $cmd`") 2>/dev/null; then
break
fi
prev="$cmd"
done
if test "$prev" != 'sed 50q "$0"'; then
echo_test_string=`eval $prev`
export echo_test_string
exec "${ORIGINAL_CONFIG_SHELL}" "$0" ${1+"$@"}
else
# Oops. We lost completely, so just stick with echo.
echo=echo
fi
fi
fi
fi
fi
# Sed substitution that helps us do robust quoting. It backslashifies
# metacharacters that are still active within double-quoted strings.
Xsed='sed -e s/^X//'
sed_quote_subst='s/\([\\"\\`$\\\\]\)/\\\1/g'
# Same as above, but do not quote variable references.
double_quote_subst='s/\([\\"\\`\\\\]\)/\\\1/g'
# Sed substitution to delay expansion of an escaped shell variable in a
# double_quote_subst'ed string.
delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g'
# The name of this program.
progname=`$echo "X$0" | $Xsed -e 's%^.*/%%'`
# Constants:
PROGRAM=ltconfig
PACKAGE=libtool
VERSION=1.3.4
TIMESTAMP=" (1.385.2.196 1999/12/07 21:47:57)"
ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
rm="rm -f"
help="Try \`$progname --help' for more information."
# Global variables:
default_ofile=libtool
can_build_shared=yes
enable_shared=yes
# All known linkers require a `.a' archive for static linking (except M$VC,
# which needs '.lib').
enable_static=yes
enable_fast_install=yes
enable_dlopen=unknown
enable_win32_dll=no
ltmain=
silent=
srcdir=
ac_config_guess=
ac_config_sub=
host=
nonopt=
ofile="$default_ofile"
verify_host=yes
with_gcc=no
with_gnu_ld=no
need_locks=yes
ac_ext=c
objext=o
libext=a
exeext=
cache_file=
old_AR="$AR"
old_CC="$CC"
old_CFLAGS="$CFLAGS"
old_CPPFLAGS="$CPPFLAGS"
old_LDFLAGS="$LDFLAGS"
old_LD="$LD"
old_LN_S="$LN_S"
old_LIBS="$LIBS"
old_NM="$NM"
old_RANLIB="$RANLIB"
old_DLLTOOL="$DLLTOOL"
old_OBJDUMP="$OBJDUMP"
old_AS="$AS"
# Parse the command line options.
args=
prev=
for option
do
case "$option" in
-*=*) optarg=`echo "$option" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
*) optarg= ;;
esac
# If the previous option needs an argument, assign it.
if test -n "$prev"; then
eval "$prev=\$option"
prev=
continue
fi
case "$option" in
--help) cat <<EOM
Usage: $progname [OPTION]... [HOST [LTMAIN]]
Generate a system-specific libtool script.
--debug enable verbose shell tracing
--disable-shared do not build shared libraries
--disable-static do not build static libraries
--disable-fast-install do not optimize for fast installation
--enable-dlopen enable dlopen support
--enable-win32-dll enable building dlls on win32 hosts
--help display this help and exit
--no-verify do not verify that HOST is a valid host type
-o, --output=FILE specify the output file [default=$default_ofile]
--quiet same as \`--silent'
--silent do not print informational messages
--srcdir=DIR find \`config.guess' in DIR
--version output version information and exit
--with-gcc assume that the GNU C compiler will be used
--with-gnu-ld assume that the C compiler uses the GNU linker
--disable-lock disable file locking
--cache-file=FILE configure cache file
LTMAIN is the \`ltmain.sh' shell script fragment or \`ltmain.c' program
that provides basic libtool functionality.
HOST is the canonical host system name [default=guessed].
EOM
exit 0
;;
--debug)
echo "$progname: enabling shell trace mode"
set -x
;;
--disable-shared) enable_shared=no ;;
--disable-static) enable_static=no ;;
--disable-fast-install) enable_fast_install=no ;;
--enable-dlopen) enable_dlopen=yes ;;
--enable-win32-dll) enable_win32_dll=yes ;;
--quiet | --silent) silent=yes ;;
--srcdir) prev=srcdir ;;
--srcdir=*) srcdir="$optarg" ;;
--no-verify) verify_host=no ;;
--output | -o) prev=ofile ;;
--output=*) ofile="$optarg" ;;
--version) echo "$PROGRAM (GNU $PACKAGE) $VERSION$TIMESTAMP"; exit 0 ;;
--with-gcc) with_gcc=yes ;;
--with-gnu-ld) with_gnu_ld=yes ;;
--disable-lock) need_locks=no ;;
--cache-file=*) cache_file="$optarg" ;;
-*)
echo "$progname: unrecognized option \`$option'" 1>&2
echo "$help" 1>&2
exit 1
;;
*)
if test -z "$ltmain"; then
ltmain="$option"
elif test -z "$host"; then
# This generates an unnecessary warning for sparc-sun-solaris4.1.3_U1
# if test -n "`echo $option| sed 's/[-a-z0-9.]//g'`"; then
# echo "$progname: warning \`$option' is not a valid host type" 1>&2
# fi
host="$option"
else
echo "$progname: too many arguments" 1>&2
echo "$help" 1>&2
exit 1
fi ;;
esac
done
if test -z "$ltmain"; then
echo "$progname: you must specify a LTMAIN file" 1>&2
echo "$help" 1>&2
exit 1
fi
if test ! -f "$ltmain"; then
echo "$progname: \`$ltmain' does not exist" 1>&2
echo "$help" 1>&2
exit 1
fi
# Quote any args containing shell metacharacters.
ltconfig_args=
for arg
do
case "$arg" in
*" "*|*" "*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?]*)
ltconfig_args="$ltconfig_args '$arg'" ;;
*) ltconfig_args="$ltconfig_args $arg" ;;
esac
done
# A relevant subset of AC_INIT.
# File descriptor usage:
# 0 standard input
# 1 file creation
# 2 errors and warnings
# 3 some systems may open it to /dev/tty
# 4 used on the Kubota Titan
# 5 compiler messages saved in config.log
# 6 checking for... messages and results
if test "$silent" = yes; then
exec 6>/dev/null
else
exec 6>&1
fi
exec 5>>./config.log
# NLS nuisances.
# Only set LANG and LC_ALL to C if already set.
# These must not be set unconditionally because not all systems understand
# e.g. LANG=C (notably SCO).
if test "X${LC_ALL+set}" = Xset; then LC_ALL=C; export LC_ALL; fi
if test "X${LANG+set}" = Xset; then LANG=C; export LANG; fi
if test -n "$cache_file" && test -r "$cache_file"; then
echo "loading cache $cache_file within ltconfig"
. $cache_file
fi
if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
# Stardent Vistra SVR4 grep lacks -e, says [email protected].
if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then
ac_n= ac_c='
' ac_t=' '
else
ac_n=-n ac_c= ac_t=
fi
else
ac_n= ac_c='\c' ac_t=
fi
if test -z "$srcdir"; then
# Assume the source directory is the same one as the path to LTMAIN.
srcdir=`$echo "X$ltmain" | $Xsed -e 's%/[^/]*$%%'`
test "$srcdir" = "$ltmain" && srcdir=.
fi
trap "$rm conftest*; exit 1" 1 2 15
if test "$verify_host" = yes; then
# Check for config.guess and config.sub.
ac_aux_dir=
for ac_dir in $srcdir $srcdir/.. $srcdir/../..; do
if test -f $ac_dir/config.guess; then
ac_aux_dir=$ac_dir
break
fi
done
if test -z "$ac_aux_dir"; then
echo "$progname: cannot find config.guess in $srcdir $srcdir/.. $srcdir/../.." 1>&2
echo "$help" 1>&2
exit 1
fi
ac_config_guess=$ac_aux_dir/config.guess
ac_config_sub=$ac_aux_dir/config.sub
# Make sure we can run config.sub.
if $SHELL $ac_config_sub sun4 >/dev/null 2>&1; then :
else
echo "$progname: cannot run $ac_config_sub" 1>&2
echo "$help" 1>&2
exit 1
fi
echo $ac_n "checking host system type""... $ac_c" 1>&6
host_alias=$host
case "$host_alias" in
"")
if host_alias=`$SHELL $ac_config_guess`; then :
else
echo "$progname: cannot guess host type; you must specify one" 1>&2
echo "$help" 1>&2
exit 1
fi ;;
esac
host=`$SHELL $ac_config_sub $host_alias`
echo "$ac_t$host" 1>&6
# Make sure the host verified.
test -z "$host" && exit 1
elif test -z "$host"; then
echo "$progname: you must specify a host type if you use \`--no-verify'" 1>&2
echo "$help" 1>&2
exit 1
else
host_alias=$host
fi
# Transform linux* to *-*-linux-gnu*, to support old configure scripts.
case "$host_os" in
linux-gnu*) ;;
linux*) host=`echo $host | sed 's/^\(.*-.*-linux\)\(.*\)$/\1-gnu\2/'`
esac
host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
case "$host_os" in
aix3*)
# AIX sometimes has problems with the GCC collect2 program. For some
# reason, if we set the COLLECT_NAMES environment variable, the problems
# vanish in a puff of smoke.
if test "X${COLLECT_NAMES+set}" != Xset; then
COLLECT_NAMES=
export COLLECT_NAMES
fi
;;
esac
# Determine commands to create old-style static archives.
old_archive_cmds='$AR cru $oldlib$oldobjs'
old_postinstall_cmds='chmod 644 $oldlib'
old_postuninstall_cmds=
# Set a sane default for `AR'.
test -z "$AR" && AR=ar
# Set a sane default for `OBJDUMP'.
test -z "$OBJDUMP" && OBJDUMP=objdump
# If RANLIB is not set, then run the test.
if test "${RANLIB+set}" != "set"; then
result=no
echo $ac_n "checking for ranlib... $ac_c" 1>&6
IFS="${IFS= }"; save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR}"
for dir in $PATH; do
test -z "$dir" && dir=.
if test -f $dir/ranlib || test -f $dir/ranlib$ac_exeext; then
RANLIB="ranlib"
result="ranlib"
break
fi
done
IFS="$save_ifs"
echo "$ac_t$result" 1>&6
fi
if test -n "$RANLIB"; then
old_archive_cmds="$old_archive_cmds~\$RANLIB \$oldlib"
old_postinstall_cmds="\$RANLIB \$oldlib~$old_postinstall_cmds"
fi
# Set sane defaults for `DLLTOOL', `OBJDUMP', and `AS', used on cygwin.
test -z "$DLLTOOL" && DLLTOOL=dlltool
test -z "$OBJDUMP" && OBJDUMP=objdump
test -z "$AS" && AS=as
# Check to see if we are using GCC.
if test "$with_gcc" != yes || test -z "$CC"; then
# If CC is not set, then try to find GCC or a usable CC.
if test -z "$CC"; then
echo $ac_n "checking for gcc... $ac_c" 1>&6
IFS="${IFS= }"; save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR}"
for dir in $PATH; do
test -z "$dir" && dir=.
if test -f $dir/gcc || test -f $dir/gcc$ac_exeext; then
CC="gcc"
break
fi
done
IFS="$save_ifs"
if test -n "$CC"; then
echo "$ac_t$CC" 1>&6
else
echo "$ac_t"no 1>&6
fi
fi
# Not "gcc", so try "cc", rejecting "/usr/ucb/cc".
if test -z "$CC"; then
echo $ac_n "checking for cc... $ac_c" 1>&6
IFS="${IFS= }"; save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR}"
cc_rejected=no
for dir in $PATH; do
test -z "$dir" && dir=.
if test -f $dir/cc || test -f $dir/cc$ac_exeext; then
if test "$dir/cc" = "/usr/ucb/cc"; then
cc_rejected=yes
continue
fi
CC="cc"
break
fi
done
IFS="$save_ifs"
if test $cc_rejected = yes; then
# We found a bogon in the path, so make sure we never use it.
set dummy $CC
shift
if test $# -gt 0; then
# We chose a different compiler from the bogus one.
# However, it has the same name, so the bogon will be chosen
# first if we set CC to just the name; use the full file name.
shift
set dummy "$dir/cc" "$@"
shift
CC="$@"
fi
fi
if test -n "$CC"; then
echo "$ac_t$CC" 1>&6
else
echo "$ac_t"no 1>&6
fi
if test -z "$CC"; then
echo "$progname: error: no acceptable cc found in \$PATH" 1>&2
exit 1
fi
fi
# Now see if the compiler is really GCC.
with_gcc=no
echo $ac_n "checking whether we are using GNU C... $ac_c" 1>&6
echo "$progname:581: checking whether we are using GNU C" >&5
$rm conftest.c
cat > conftest.c <<EOF
#ifdef __GNUC__
yes;
#endif
EOF
if { ac_try='${CC-cc} -E conftest.c'; { (eval echo $progname:589: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
with_gcc=yes
fi
$rm conftest.c
echo "$ac_t$with_gcc" 1>&6
fi
# Allow CC to be a program name with arguments.
set dummy $CC
compiler="$2"
echo $ac_n "checking for object suffix... $ac_c" 1>&6
$rm conftest*
echo 'int i = 1;' > conftest.c
echo "$progname:603: checking for object suffix" >& 5
if { (eval echo $progname:604: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; }; then
# Append any warnings to the config.log.
cat conftest.err 1>&5
for ac_file in conftest.*; do
case $ac_file in
*.c) ;;
*) objext=`echo $ac_file | sed -e s/conftest.//` ;;
esac
done
else
cat conftest.err 1>&5
echo "$progname: failed program was:" >&5
cat conftest.c >&5
fi
$rm conftest*
echo "$ac_t$objext" 1>&6
echo $ac_n "checking for executable suffix... $ac_c" 1>&6
if eval "test \"`echo '$''{'ac_cv_exeext'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
ac_cv_exeext="no"
$rm conftest*
echo 'main () { return 0; }' > conftest.c
echo "$progname:629: checking for executable suffix" >& 5
if { (eval echo $progname:630: \"$ac_link\") 1>&5; (eval $ac_link) 2>conftest.err; }; then
# Append any warnings to the config.log.
cat conftest.err 1>&5
for ac_file in conftest.*; do
case $ac_file in
*.c | *.err | *.$objext ) ;;
*) ac_cv_exeext=.`echo $ac_file | sed -e s/conftest.//` ;;
esac
done
else
cat conftest.err 1>&5
echo "$progname: failed program was:" >&5
cat conftest.c >&5
fi
$rm conftest*
fi
if test "X$ac_cv_exeext" = Xno; then
exeext=""
else
exeext="$ac_cv_exeext"
fi
echo "$ac_t$ac_cv_exeext" 1>&6
echo $ac_n "checking for $compiler option to produce PIC... $ac_c" 1>&6
pic_flag=
special_shlib_compile_flags=
wl=
link_static_flag=
no_builtin_flag=
if test "$with_gcc" = yes; then
wl='-Wl,'
link_static_flag='-static'
case "$host_os" in
beos* | irix5* | irix6* | osf3* | osf4* | osf5*)
# PIC is the default for these OSes.
;;
aix*)
# Below there is a dirty hack to force normal static linking with -ldl
# The problem is because libdl dynamically linked with both libc and
# libC (AIX C++ library), which obviously doesn't included in libraries
# list by gcc. This cause undefined symbols with -static flags.
# This hack allows C programs to be linked with "-static -ldl", but
# we not sure about C++ programs.
link_static_flag="$link_static_flag ${wl}-lC"
;;
cygwin* | mingw* | os2*)
# We can build DLLs from non-PIC.
;;
amigaos*)
# FIXME: we need at least 68020 code to build shared libraries, but
# adding the `-m68020' flag to GCC prevents building anything better,
# like `-m68040'.
pic_flag='-m68020 -resident32 -malways-restore-a4'
;;
sysv4*MP*)
if test -d /usr/nec; then
pic_flag=-Kconform_pic
fi
;;
*)
pic_flag='-fPIC'
;;
esac
else
# PORTME Check for PIC flags for the system compiler.
case "$host_os" in
aix3* | aix4*)
# All AIX code is PIC.
link_static_flag='-bnso -bI:/lib/syscalls.exp'
;;
hpux9* | hpux10* | hpux11*)
# Is there a better link_static_flag that works with the bundled CC?
wl='-Wl,'
link_static_flag="${wl}-a ${wl}archive"
pic_flag='+Z'
;;
irix5* | irix6*)
wl='-Wl,'
link_static_flag='-non_shared'
# PIC (with -KPIC) is the default.
;;
cygwin* | mingw* | os2*)
# We can build DLLs from non-PIC.
;;
osf3* | osf4* | osf5*)
# All OSF/1 code is PIC.
wl='-Wl,'
link_static_flag='-non_shared'
;;
sco3.2v5*)
pic_flag='-Kpic'
link_static_flag='-dn'
special_shlib_compile_flags='-belf'
;;
solaris*)
pic_flag='-KPIC'
link_static_flag='-Bstatic'
wl='-Wl,'
;;
sunos4*)
pic_flag='-PIC'
link_static_flag='-Bstatic'
wl='-Qoption ld '
;;
sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
pic_flag='-KPIC'
link_static_flag='-Bstatic'
wl='-Wl,'
;;
uts4*)
pic_flag='-pic'
link_static_flag='-Bstatic'
;;
sysv4*MP*)
if test -d /usr/nec ;then
pic_flag='-Kconform_pic'
link_static_flag='-Bstatic'
fi
;;
*)
can_build_shared=no
;;
esac
fi
if test -n "$pic_flag"; then
echo "$ac_t$pic_flag" 1>&6
# Check to make sure the pic_flag actually works.
echo $ac_n "checking if $compiler PIC flag $pic_flag works... $ac_c" 1>&6
$rm conftest*
echo "int some_variable = 0;" > conftest.c
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $pic_flag -DPIC"
echo "$progname:776: checking if $compiler PIC flag $pic_flag works" >&5
if { (eval echo $progname:777: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; } && test -s conftest.$objext; then
# Append any warnings to the config.log.
cat conftest.err 1>&5
case "$host_os" in
hpux9* | hpux10* | hpux11*)
# On HP-UX, both CC and GCC only warn that PIC is supported... then they
# create non-PIC objects. So, if there were any warnings, we assume that
# PIC is not supported.
if test -s conftest.err; then
echo "$ac_t"no 1>&6
can_build_shared=no
pic_flag=
else
echo "$ac_t"yes 1>&6
pic_flag=" $pic_flag"
fi
;;
*)
echo "$ac_t"yes 1>&6
pic_flag=" $pic_flag"
;;
esac
else
# Append any errors to the config.log.
cat conftest.err 1>&5
can_build_shared=no
pic_flag=
echo "$ac_t"no 1>&6
fi
CFLAGS="$save_CFLAGS"
$rm conftest*
else
echo "$ac_t"none 1>&6
fi
# Check to see if options -o and -c are simultaneously supported by compiler
echo $ac_n "checking if $compiler supports -c -o file.o... $ac_c" 1>&6
$rm -r conftest 2>/dev/null
mkdir conftest
cd conftest
$rm conftest*
echo "int some_variable = 0;" > conftest.c
mkdir out
# According to Tom Tromey, Ian Lance Taylor reported there are C compilers
# that will create temporary files in the current directory regardless of
# the output directory. Thus, making CWD read-only will cause this test
# to fail, enabling locking or at least warning the user not to do parallel
# builds.
chmod -w .
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -o out/conftest2.o"
echo "$progname:829: checking if $compiler supports -c -o file.o" >&5
if { (eval echo $progname:830: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>out/conftest.err; } && test -s out/conftest2.o; then
# The compiler can only warn and ignore the option if not recognized
# So say no if there are warnings
if test -s out/conftest.err; then
echo "$ac_t"no 1>&6
compiler_c_o=no
else
echo "$ac_t"yes 1>&6
compiler_c_o=yes
fi
else
# Append any errors to the config.log.
cat out/conftest.err 1>&5
compiler_c_o=no
echo "$ac_t"no 1>&6
fi
CFLAGS="$save_CFLAGS"
chmod u+w .
$rm conftest* out/*
rmdir out
cd ..
rmdir conftest
$rm -r conftest 2>/dev/null
if test x"$compiler_c_o" = x"yes"; then
# Check to see if we can write to a .lo
echo $ac_n "checking if $compiler supports -c -o file.lo... $ac_c" 1>&6
$rm conftest*
echo "int some_variable = 0;" > conftest.c
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -c -o conftest.lo"
echo "$progname:862: checking if $compiler supports -c -o file.lo" >&5
if { (eval echo $progname:863: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; } && test -s conftest.lo; then
# The compiler can only warn and ignore the option if not recognized
# So say no if there are warnings
if test -s conftest.err; then
echo "$ac_t"no 1>&6
compiler_o_lo=no
else
echo "$ac_t"yes 1>&6
compiler_o_lo=yes
fi
else
# Append any errors to the config.log.
cat conftest.err 1>&5
compiler_o_lo=no
echo "$ac_t"no 1>&6
fi
CFLAGS="$save_CFLAGS"
$rm conftest*
else
compiler_o_lo=no
fi
# Check to see if we can do hard links to lock some files if needed
hard_links="nottested"
if test "$compiler_c_o" = no && test "$need_locks" != no; then
# do not overwrite the value of need_locks provided by the user
echo $ac_n "checking if we can lock with hard links... $ac_c" 1>&6
hard_links=yes
$rm conftest*
ln conftest.a conftest.b 2>/dev/null && hard_links=no
touch conftest.a
ln conftest.a conftest.b 2>&5 || hard_links=no
ln conftest.a conftest.b 2>/dev/null && hard_links=no
echo "$ac_t$hard_links" 1>&6
$rm conftest*
if test "$hard_links" = no; then
echo "*** WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe" >&2
need_locks=warn
fi
else
need_locks=no
fi
if test "$with_gcc" = yes; then
# Check to see if options -fno-rtti -fno-exceptions are supported by compiler
echo $ac_n "checking if $compiler supports -fno-rtti -fno-exceptions ... $ac_c" 1>&6
$rm conftest*
echo "int some_variable = 0;" > conftest.c
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fno-rtti -fno-exceptions -c conftest.c"
echo "$progname:914: checking if $compiler supports -fno-rtti -fno-exceptions" >&5
if { (eval echo $progname:915: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; } && test -s conftest.o; then
# The compiler can only warn and ignore the option if not recognized
# So say no if there are warnings
if test -s conftest.err; then
echo "$ac_t"no 1>&6
compiler_rtti_exceptions=no
else
echo "$ac_t"yes 1>&6
compiler_rtti_exceptions=yes
fi
else
# Append any errors to the config.log.
cat conftest.err 1>&5
compiler_rtti_exceptions=no
echo "$ac_t"no 1>&6
fi
CFLAGS="$save_CFLAGS"
$rm conftest*
if test "$compiler_rtti_exceptions" = "yes"; then
no_builtin_flag=' -fno-builtin -fno-rtti -fno-exceptions'
else
no_builtin_flag=' -fno-builtin'
fi
fi
# Check for any special shared library compilation flags.
if test -n "$special_shlib_compile_flags"; then
echo "$progname: warning: \`$CC' requires \`$special_shlib_compile_flags' to build shared libraries" 1>&2
if echo "$old_CC $old_CFLAGS " | egrep -e "[ ]$special_shlib_compile_flags[ ]" >/dev/null; then :
else
echo "$progname: add \`$special_shlib_compile_flags' to the CC or CFLAGS env variable and reconfigure" 1>&2
can_build_shared=no
fi
fi
echo $ac_n "checking if $compiler static flag $link_static_flag works... $ac_c" 1>&6
$rm conftest*
echo 'main(){return(0);}' > conftest.c
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS $link_static_flag"
echo "$progname:958: checking if $compiler static flag $link_static_flag works" >&5
if { (eval echo $progname:959: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
echo "$ac_t$link_static_flag" 1>&6
else
echo "$ac_t"none 1>&6
link_static_flag=
fi
LDFLAGS="$save_LDFLAGS"
$rm conftest*
if test -z "$LN_S"; then
# Check to see if we can use ln -s, or we need hard links.
echo $ac_n "checking whether ln -s works... $ac_c" 1>&6
$rm conftest.dat
if ln -s X conftest.dat 2>/dev/null; then
$rm conftest.dat
LN_S="ln -s"
else
LN_S=ln
fi
if test "$LN_S" = "ln -s"; then
echo "$ac_t"yes 1>&6
else
echo "$ac_t"no 1>&6
fi
fi
# Make sure LD is an absolute path.
if test -z "$LD"; then
ac_prog=ld
if test "$with_gcc" = yes; then
# Check if gcc -print-prog-name=ld gives a path.
echo $ac_n "checking for ld used by GCC... $ac_c" 1>&6
echo "$progname:991: checking for ld used by GCC" >&5
ac_prog=`($CC -print-prog-name=ld) 2>&5`
case "$ac_prog" in
# Accept absolute paths.
[\\/]* | [A-Za-z]:[\\/]*)
re_direlt='/[^/][^/]*/\.\./'
# Canonicalize the path of ld
ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`