## libtool.m4 - Configure libtool for the target system. -*-Shell-script-*-

## Copyright (C) 1996-2000 Free Software Foundation, Inc.

## Originally by Gordon Matzigkeit <[email protected]>, 1996

##

## This program 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.

# serial 42 AC_PROG_LIBTOOL

AC_DEFUN(AC_PROG_LIBTOOL,

[AC_REQUIRE([AC_LIBTOOL_SETUP])dnl

# Save cache, so that ltconfig can load it

AC_CACHE_SAVE

# Actually configure libtool. ac_aux_dir is where install-sh is found.

AR="$AR" CC="$CC" CFLAGS="$CFLAGS" CPPFLAGS="$CPPFLAGS" \

FILE="$FILE" LD="$LD" LDFLAGS="$LDFLAGS" LIBS="$LIBS" \

LN_S="$LN_S" NM="$NM" RANLIB="$RANLIB" STRIP="$STRIP" \

AS="$AS" DLLTOOL="$DLLTOOL" OBJDUMP="$OBJDUMP" \

objext="$OBJEXT" exeext="$EXEEXT" reload_flag="$reload_flag" \

deplibs_check_method="$deplibs_check_method" file_magic_cmd="$file_magic_cmd" \

${CONFIG_SHELL-/bin/sh} $ac_aux_dir/ltconfig --no-reexec \

$libtool_flags --no-verify --build="$build" $ac_aux_dir/ltmain.sh $lt_target \

|| AC_MSG_ERROR([libtool configure failed])

# Reload cache, that may have been modified by ltconfig

AC_CACHE_LOAD

# This can be used to rebuild libtool when needed

LIBTOOL_DEPS="$ac_aux_dir/ltconfig $ac_aux_dir/ltmain.sh"

# Always use our own libtool.

LIBTOOL='$(SHELL) $(top_builddir)/libtool'

AC_SUBST(LIBTOOL)dnl

# Redirect the config.log output again, so that the ltconfig log is not

# clobbered by the next message.

exec 5>>./config.log

])

AC_DEFUN(AC_LIBTOOL_SETUP,

[AC_PREREQ(2.13)dnl

AC_REQUIRE([AC_ENABLE_SHARED])dnl

AC_REQUIRE([AC_ENABLE_STATIC])dnl

AC_REQUIRE([AC_ENABLE_FAST_INSTALL])dnl

AC_REQUIRE([AC_CANONICAL_HOST])dnl

AC_REQUIRE([AC_CANONICAL_BUILD])dnl

AC_REQUIRE([AC_PROG_CC])dnl

AC_REQUIRE([AC_PROG_LD])dnl

AC_REQUIRE([AC_PROG_LD_RELOAD_FLAG])dnl

AC_REQUIRE([AC_PROG_NM])dnl

AC_REQUIRE([AC_PROG_LN_S])dnl

AC_REQUIRE([AC_DEPLIBS_CHECK_METHOD])dnl

AC_REQUIRE([AC_OBJEXT])dnl

AC_REQUIRE([AC_EXEEXT])dnl

dnl

# Only perform the check for file, if the check method requires it

case "$deplibs_check_method" in

file_magic*)

if test "$file_magic_cmd" = '$FILE'; then

AC_PATH_FILE

fi

;;

esac

case "$target" in

NONE) lt_target="$host" ;;

*) lt_target="$target" ;;

esac

AC_CHECK_TOOL(RANLIB, ranlib, :)

AC_CHECK_TOOL(STRIP, strip, :)

# Check for any special flags to pass to ltconfig.

libtool_flags="--cache-file=$cache_file"

test "$enable_shared" = no && libtool_flags="$libtool_flags --disable-shared"

test "$enable_static" = no && libtool_flags="$libtool_flags --disable-static"

test "$enable_fast_install" = no && libtool_flags="$libtool_flags --disable-fast-install"

test "$ac_cv_prog_gcc" = yes && libtool_flags="$libtool_flags --with-gcc"

test "$ac_cv_prog_gnu_ld" = yes && libtool_flags="$libtool_flags --with-gnu-ld"

ifdef([AC_PROVIDE_AC_LIBTOOL_DLOPEN],

[libtool_flags="$libtool_flags --enable-dlopen"])

ifdef([AC_PROVIDE_AC_LIBTOOL_WIN32_DLL],

[libtool_flags="$libtool_flags --enable-win32-dll"])

AC_ARG_ENABLE(libtool-lock,

[ --disable-libtool-lock avoid locking (might break parallel builds)])

test "x$enable_libtool_lock" = xno && libtool_flags="$libtool_flags --disable-lock"

test x"$silent" = xyes && libtool_flags="$libtool_flags --silent"

AC_ARG_WITH(pic,

[ --with-pic try to use only PIC/non-PIC objects [default=use both]],

pic_mode="$withval", pic_mode=default)

test x"$pic_mode" = xyes && libtool_flags="$libtool_flags --prefer-pic"

test x"$pic_mode" = xno && libtool_flags="$libtool_flags --prefer-non-pic"

# Some flags need to be propagated to the compiler or linker for good

# libtool support.

case "$lt_target" in

*-*-irix6*)

# Find out which ABI we are using.

echo '[#]line __oline__ "configure"' > conftest.$ac_ext

if AC_TRY_EVAL(ac_compile); then

case "`/usr/bin/file conftest.o`" in

*32-bit*)

LD="${LD-ld} -32"

;;

*N32*)

LD="${LD-ld} -n32"

;;

*64-bit*)

LD="${LD-ld} -64"

;;

esac

fi

rm -rf conftest*

;;

*-*-sco3.2v5*)

# On SCO OpenServer 5, we need -belf to get full-featured binaries.

SAVE_CFLAGS="$CFLAGS"

CFLAGS="$CFLAGS -belf"

AC_CACHE_CHECK([whether the C compiler needs -belf], lt_cv_cc_needs_belf,

[AC_TRY_LINK([],[],[lt_cv_cc_needs_belf=yes],[lt_cv_cc_needs_belf=no])])

if test x"$lt_cv_cc_needs_belf" != x"yes"; then

# this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf

CFLAGS="$SAVE_CFLAGS"

fi

;;

ifdef([AC_PROVIDE_AC_LIBTOOL_WIN32_DLL],

[*-*-cygwin* | *-*-mingw*)

AC_CHECK_TOOL(DLLTOOL, dlltool, false)

AC_CHECK_TOOL(AS, as, false)

AC_CHECK_TOOL(OBJDUMP, objdump, false)

# recent cygwin and mingw systems supply a stub DllMain which the user

# can override, but on older systems we have to supply one

AC_CACHE_CHECK([if libtool should supply DllMain function], lt_cv_need_dllmain,

[AC_TRY_LINK([],

[extern int __attribute__((__stdcall__)) DllMain(void*, int, void*);

DllMain (0, 0, 0);],

[lt_cv_need_dllmain=yes],[lt_cv_need_dllmain=no])])

case "$lt_target/$CC" in

*-*-cygwin*/gcc*-mno-cygwin*|*-*-mingw*)

# old mingw systems require "-dll" to link a DLL, while more recent ones

# require "-mdll"

SAVE_CFLAGS="$CFLAGS"

CFLAGS="$CFLAGS -mdll"

AC_CACHE_CHECK([how to link DLLs], lt_cv_cc_dll_switch,

[AC_TRY_LINK([], [], [lt_cv_cc_dll_switch=-mdll],[lt_cv_cc_dll_switch=-dll])])

CFLAGS="$SAVE_CFLAGS" ;;

*-*-cygwin*)

# cygwin systems need to pass --dll to the linker, and not link

# crt.o which will require a WinMain@16 definition.

lt_cv_cc_dll_switch="-Wl,--dll -nostartfiles" ;;

esac

;;

])

esac

])

# AC_LIBTOOL_DLOPEN - enable checks for dlopen support

AC_DEFUN(AC_LIBTOOL_DLOPEN, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])])

# AC_LIBTOOL_WIN32_DLL - declare package support for building win32 dll's

AC_DEFUN(AC_LIBTOOL_WIN32_DLL, [AC_BEFORE([$0], [AC_LIBTOOL_SETUP])])

# AC_ENABLE_SHARED - implement the --enable-shared flag

# Usage: AC_ENABLE_SHARED[(DEFAULT)]

# Where DEFAULT is either `yes' or `no'. If omitted, it defaults to

# `yes'.

AC_DEFUN(AC_ENABLE_SHARED, [dnl

define([AC_ENABLE_SHARED_DEFAULT], ifelse($1, no, no, yes))dnl

AC_ARG_ENABLE(shared,

changequote(<<, >>)dnl

<< --enable-shared[=PKGS] build shared libraries [default=>>AC_ENABLE_SHARED_DEFAULT],

changequote([, ])dnl

[p=${PACKAGE-default}

case "$enableval" in

yes) enable_shared=yes ;;

no) enable_shared=no ;;

*)

enable_shared=no

# Look at the argument we got. We use all the common list separators.

IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"

for pkg in $enableval; do

if test "X$pkg" = "X$p"; then

enable_shared=yes

fi

done

IFS="$ac_save_ifs"

;;

esac],

enable_shared=AC_ENABLE_SHARED_DEFAULT)dnl

])

# AC_DISABLE_SHARED - set the default shared flag to --disable-shared

AC_DEFUN(AC_DISABLE_SHARED, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl

AC_ENABLE_SHARED(no)])

# AC_ENABLE_STATIC - implement the --enable-static flag

# Usage: AC_ENABLE_STATIC[(DEFAULT)]

# Where DEFAULT is either `yes' or `no'. If omitted, it defaults to

# `yes'.

AC_DEFUN(AC_ENABLE_STATIC, [dnl

define([AC_ENABLE_STATIC_DEFAULT], ifelse($1, no, no, yes))dnl

AC_ARG_ENABLE(static,

changequote(<<, >>)dnl

<< --enable-static[=PKGS] build static libraries [default=>>AC_ENABLE_STATIC_DEFAULT],

changequote([, ])dnl

[p=${PACKAGE-default}

case "$enableval" in

yes) enable_static=yes ;;

no) enable_static=no ;;

*)

enable_static=no

# Look at the argument we got. We use all the common list separators.

IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"

for pkg in $enableval; do

if test "X$pkg" = "X$p"; then

enable_static=yes

fi

done

IFS="$ac_save_ifs"

;;

esac],

enable_static=AC_ENABLE_STATIC_DEFAULT)dnl

])

# AC_DISABLE_STATIC - set the default static flag to --disable-static

AC_DEFUN(AC_DISABLE_STATIC, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl

AC_ENABLE_STATIC(no)])

# AC_ENABLE_FAST_INSTALL - implement the --enable-fast-install flag

# Usage: AC_ENABLE_FAST_INSTALL[(DEFAULT)]

# Where DEFAULT is either `yes' or `no'. If omitted, it defaults to

# `yes'.

AC_DEFUN(AC_ENABLE_FAST_INSTALL, [dnl

define([AC_ENABLE_FAST_INSTALL_DEFAULT], ifelse($1, no, no, yes))dnl

AC_ARG_ENABLE(fast-install,

changequote(<<, >>)dnl

<< --enable-fast-install[=PKGS] optimize for fast installation [default=>>AC_ENABLE_FAST_INSTALL_DEFAULT],

changequote([, ])dnl

[p=${PACKAGE-default}

case "$enableval" in

yes) enable_fast_install=yes ;;

no) enable_fast_install=no ;;

*)

enable_fast_install=no

# Look at the argument we got. We use all the common list separators.

IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"

for pkg in $enableval; do

if test "X$pkg" = "X$p"; then

enable_fast_install=yes

fi

done

IFS="$ac_save_ifs"

;;

esac],

enable_fast_install=AC_ENABLE_FAST_INSTALL_DEFAULT)dnl

])

# AC_ENABLE_FAST_INSTALL - set the default to --disable-fast-install

AC_DEFUN(AC_DISABLE_FAST_INSTALL, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl

AC_ENABLE_FAST_INSTALL(no)])

# AC_PATH_TOOL_PREFIX - find a file program which can recognise shared library

AC_DEFUN(AC_PATH_TOOL_PREFIX,

[AC_MSG_CHECKING([for $1])

AC_CACHE_VAL(lt_cv_path_FILE,

[case "$FILE" in

/*)

lt_cv_path_FILE="$FILE" # Let the user override the test with a path.

;;

?:/*)

ac_cv_path_FILE="$FILE" # Let the user override the test with a dos path.

;;

*)

ac_save_file="$FILE"

IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"

dnl $ac_dummy forces splitting on constant user-supplied paths.

dnl POSIX.2 word splitting is done only on the output of word expansions,

dnl not every word. This closes a longstanding sh security hole.

ac_dummy="ifelse([$2], , $PATH, [$2])"

for ac_dir in $ac_dummy; do

test -z "$ac_dir" && ac_dir=.

if test -f $ac_dir/$1; then

lt_cv_path_FILE="$ac_dir/$1"

if test -n "$file_magic_test_file"; then

case "$deplibs_check_method" in

"file_magic "*)

file_magic_regex="`expr \"$deplibs_check_method\" : \"file_magic \(.*\)\"`"

FILE="$lt_cv_path_FILE"

if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |

egrep "$file_magic_regex" > /dev/null; then

:

else

cat <<EOF 1>&2

*** Warning: the command libtool uses to detect shared libraries,

*** $file_magic_cmd, produces output that libtool cannot recognize.

*** The result is that libtool may fail to recognize shared libraries

*** as such. This will affect the creation of libtool libraries that

*** depend on shared libraries, but programs linked with such libtool

*** libraries will work regardless of this problem. Nevertheless, you

*** may want to report the problem to your system manager and/or to

*** [email protected]

EOF

fi ;;

esac

fi

break

fi

done

IFS="$ac_save_ifs"

FILE="$ac_save_file"

;;

esac])

FILE="$lt_cv_path_FILE"

if test -n "$FILE"; then

AC_MSG_RESULT($FILE)

else

AC_MSG_RESULT(no)

fi

])

# AC_PATH_FILE - find a file program which can recognise a shared library

AC_DEFUN(AC_PATH_FILE,

[AC_REQUIRE([AC_CHECK_TOOL_PREFIX])dnl

AC_PATH_TOOL_PREFIX(${ac_tool_prefix}file, /usr/bin:$PATH)

if test -z "$lt_cv_path_FILE"; then

if test -n "$ac_tool_prefix"; then

AC_PATH_TOOL_PREFIX(file, /usr/bin:$PATH)

else

FILE=:

fi

fi

])

# AC_PROG_LD - find the path to the GNU or non-GNU linker

AC_DEFUN(AC_PROG_LD,

[AC_ARG_WITH(gnu-ld,

[ --with-gnu-ld assume the C compiler uses GNU ld [default=no]],

test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)

AC_REQUIRE([AC_PROG_CC])dnl

AC_REQUIRE([AC_CANONICAL_HOST])dnl

AC_REQUIRE([AC_CANONICAL_BUILD])dnl

ac_prog=ld

if test "$ac_cv_prog_gcc" = yes; then

# Check if gcc -print-prog-name=ld gives a path.

AC_MSG_CHECKING([for ld used by GCC])

case $lt_target in

*-*-mingw*)

# gcc leaves a trailing carriage return which upsets mingw

ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;

*)

ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;

esac

case "$ac_prog" in

# Accept absolute paths.

changequote(,)dnl

[\\/]* | [A-Za-z]:[\\/]*)

re_direlt='/[^/][^/]*/\.\./'

changequote([,])dnl

# 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%/%"`

done

test -z "$LD" && LD="$ac_prog"

;;

"")

# If it fails, then pretend we aren't using GCC.

ac_prog=ld

;;

*)

# If it is relative, then search for the first ld in PATH.

with_gnu_ld=unknown

;;

esac

elif test "$with_gnu_ld" = yes; then

AC_MSG_CHECKING([for GNU ld])

else

AC_MSG_CHECKING([for non-GNU ld])

fi

AC_CACHE_VAL(ac_cv_path_LD,

[if test -z "$LD"; then

IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"

for ac_dir in $PATH; do

test -z "$ac_dir" && ac_dir=.

if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then

ac_cv_path_LD="$ac_dir/$ac_prog"

# Check to see if the program is GNU ld. I'd rather use --version,

# but apparently some GNU ld's only accept -v.

# Break only if it was the GNU/non-GNU ld that we prefer.

if "$ac_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then

test "$with_gnu_ld" != no && break

else

test "$with_gnu_ld" != yes && break

fi

fi

done

IFS="$ac_save_ifs"

else

ac_cv_path_LD="$LD" # Let the user override the test with a path.

fi])

LD="$ac_cv_path_LD"

if test -n "$LD"; then

AC_MSG_RESULT($LD)

else

AC_MSG_RESULT(no)

fi

test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])

AC_PROG_LD_GNU

])

AC_DEFUN(AC_PROG_LD_GNU,

[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], ac_cv_prog_gnu_ld,

[# I'd rather use --version here, but apparently some GNU ld's only accept -v.

if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then

ac_cv_prog_gnu_ld=yes

else

ac_cv_prog_gnu_ld=no

fi])

with_gnu_ld=$ac_cv_prog_gnu_ld

])

# AC_PROG_LD_RELOAD_FLAG - find reload flag for linker

# -- PORTME Some linkers may need a different reload flag.

AC_DEFUN(AC_PROG_LD_RELOAD_FLAG,

[AC_CACHE_CHECK([for $LD option to reload object files], lt_cv_ld_reload_flag,

[lt_cv_ld_reload_flag='-r'])

reload_flag=$lt_cv_ld_reload_flag

test -n "$reload_flag" && reload_flag=" $reload_flag"

])

# AC_DEPLIBS_CHECK_METHOD - how to check for library dependencies

# -- PORTME fill in with the dynamic library characteristics

AC_DEFUN(AC_DEPLIBS_CHECK_METHOD,

[AC_CACHE_CHECK([how to recognise dependant libraries],

lt_cv_deplibs_check_method,

[lt_cv_file_magic_cmd='$FILE'

lt_cv_file_magic_test_file=

lt_cv_deplibs_check_method='unknown'

# Need to set the preceding variable on all platforms that support

# interlibrary dependencies.

# 'none' -- dependencies not supported.

# `unknown' -- same as none, but documents that we really don't know.

# 'pass_all' -- all dependencies passed with no checks.

# 'test_compile' -- check by making test program.

# 'file_magic [regex]' -- check by looking for files in library path

# which responds to the $file_magic_cmd with a given egrep regex.

# If you have `file' or equivalent on your system and you're not sure

# whether `pass_all' will *always* work, you probably want this one.

case "$host_os" in

aix4* | beos*)

lt_cv_deplibs_check_method=pass_all

;;

bsdi4*)

lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib)'

lt_cv_file_magic_test_file=/shlib/libc.so

;;

cygwin* | mingw*)

lt_cv_deplibs_check_method='file_magic file format pei*-i386(.*architecture: i386)?'

lt_cv_file_magic_cmd='${OBJDUMP} -f'

;;

freebsd*)

case "$version_type" in

freebsd-elf*)

lt_cv_deplibs_check_method=pass_all

;;

esac

;;

gnu*)

lt_cv_deplibs_check_method=pass_all

;;

irix5* | irix6*)

case "$host_os" in

irix5*)

# this will be overridden with pass_all, but let us keep it just in case

lt_cv_deplibs_check_method="file_magic ELF 32-bit MSB dynamic lib MIPS - version 1"

;;

*)

case "$LD" in

*-32|*"-32 ") libmagic=32-bit;;

*-n32|*"-n32 ") libmagic=N32;;

*-64|*"-64 ") libmagic=64-bit;;

*) libmagic=never-match;;

esac

# this will be overridden with pass_all, but let us keep it just in case

lt_cv_deplibs_check_method="file_magic ELF ${libmagic} MSB mips-[1234] dynamic lib MIPS - version 1"

;;

esac

lt_cv_file_magic_test_file=`echo /lib${libsuff}/libc.so*`

lt_cv_deplibs_check_method=pass_all

;;

# This must be Linux ELF.

linux-gnu*)

case "$host_cpu" in

alpha* | i*86 | sparc* )

lt_cv_deplibs_check_method=pass_all ;;

*)

# glibc up to 2.1.1 does not perform some relocations on ARM

lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [LM]SB (shared object|dynamic lib )' ;;

esac

lt_cv_file_magic_test_file=`echo /lib/libc.so* /lib/libc-*.so`

;;

osf3* | osf4* | osf5*)

# this will be overridden with pass_all, but let us keep it just in case

lt_cv_deplibs_check_method='file_magic COFF format alpha shared library'

lt_cv_file_magic_test_file=/shlib/libc.so

lt_cv_deplibs_check_method=pass_all

;;

sco3.2v5*)

lt_cv_deplibs_check_method=pass_all

;;

solaris*)

lt_cv_deplibs_check_method=pass_all

lt_cv_file_magic_test_file=/lib/libc.so

;;

sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)

case "$host_vendor" in

ncr)

lt_cv_deplibs_check_method=pass_all

;;

motorola)

lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib) M[0-9][0-9]* Version [0-9]'

lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*`

;;

esac

;;

esac

])

file_magic_cmd=$lt_cv_file_magic_cmd

deplibs_check_method=$lt_cv_deplibs_check_method

])

# AC_PROG_NM - find the path to a BSD-compatible name lister

AC_DEFUN(AC_PROG_NM,

[AC_MSG_CHECKING([for BSD-compatible nm])

AC_CACHE_VAL(ac_cv_path_NM,

[if test -n "$NM"; then

# Let the user override the test.

ac_cv_path_NM="$NM"

else

IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"

for ac_dir in $PATH /usr/ccs/bin /usr/ucb /bin; do

test -z "$ac_dir" && ac_dir=.

if test -f $ac_dir/nm || test -f $ac_dir/nm$ac_exeext ; then

# Check to see if the nm accepts a BSD-compat flag.

# Adding the `sed 1q' prevents false positives on HP-UX, which says:

# nm: unknown option "B" ignored

if ($ac_dir/nm -B /dev/null 2>&1 | sed '1q'; exit 0) | egrep /dev/null >/dev/null; then

ac_cv_path_NM="$ac_dir/nm -B"

break

elif ($ac_dir/nm -p /dev/null 2>&1 | sed '1q'; exit 0) | egrep /dev/null >/dev/null; then

ac_cv_path_NM="$ac_dir/nm -p"

break

else

ac_cv_path_NM=${ac_cv_path_NM="$ac_dir/nm"} # keep the first match, but

continue # so that we can try to find one that supports BSD flags

fi

fi

done

IFS="$ac_save_ifs"

test -z "$ac_cv_path_NM" && ac_cv_path_NM=nm

fi])

NM="$ac_cv_path_NM"

AC_MSG_RESULT([$NM])

])

# AC_CHECK_LIBM - check for math library

AC_DEFUN(AC_CHECK_LIBM,

[AC_REQUIRE([AC_CANONICAL_HOST])dnl

LIBM=

case "$lt_target" in

*-*-beos* | *-*-cygwin*)

# These system don't have libm

;;

*-ncr-sysv4.3*)

AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM="-lmw")

AC_CHECK_LIB(m, main, LIBM="$LIBM -lm")

;;

*)

AC_CHECK_LIB(m, main, LIBM="-lm")

;;

esac

])

# AC_LIBLTDL_CONVENIENCE[(dir)] - sets LIBLTDL to the link flags for

# the libltdl convenience library, adds --enable-ltdl-convenience to

# the configure arguments. Note that LIBLTDL is not AC_SUBSTed, nor

# is AC_CONFIG_SUBDIRS called. If DIR is not provided, it is assumed

# to be `${top_builddir}/libltdl'. Make sure you start DIR with

# '${top_builddir}/' (note the single quotes!) if your package is not

# flat, and, if you're not using automake, define top_builddir as

# appropriate in the Makefiles.

AC_DEFUN(AC_LIBLTDL_CONVENIENCE, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl

case "$enable_ltdl_convenience" in

no) AC_MSG_ERROR([this package needs a convenience libltdl]) ;;

"") enable_ltdl_convenience=yes

ac_configure_args="$ac_configure_args --enable-ltdl-convenience" ;;

esac

LIBLTDL=ifelse($#,1,$1,['${top_builddir}/libltdl'])/libltdlc.la

INCLTDL=ifelse($#,1,-I$1,['-I${top_srcdir}/libltdl'])

])

# AC_LIBLTDL_INSTALLABLE[(dir)] - sets LIBLTDL to the link flags for

# the libltdl installable library, and adds --enable-ltdl-install to

# the configure arguments. Note that LIBLTDL is not AC_SUBSTed, nor

# is AC_CONFIG_SUBDIRS called. If DIR is not provided, it is assumed

# to be `${top_builddir}/libltdl'. Make sure you start DIR with

# '${top_builddir}/' (note the single quotes!) if your package is not

# flat, and, if you're not using automake, define top_builddir as

# appropriate in the Makefiles.

# In the future, this macro may have to be called after AC_PROG_LIBTOOL.

AC_DEFUN(AC_LIBLTDL_INSTALLABLE, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl

AC_CHECK_LIB(ltdl, main,

[test x"$enable_ltdl_install" != xyes && enable_ltdl_install=no],

[if test x"$enable_ltdl_install" = xno; then

AC_MSG_WARN([libltdl not installed, but installation disabled])

else

enable_ltdl_install=yes

fi

])

if test x"$enable_ltdl_install" = x"yes"; then

ac_configure_args="$ac_configure_args --enable-ltdl-install"

LIBLTDL=ifelse($#,1,$1,['${top_builddir}/libltdl'])/libltdl.la

INCLTDL=ifelse($#,1,-I$1,['-I${top_srcdir}/libltdl'])

else

ac_configure_args="$ac_configure_args --enable-ltdl-install=no"

LIBLTDL="-lltdl"

INCLTDL=

fi

])

dnl old names

AC_DEFUN(AM_PROG_LIBTOOL, [indir([AC_PROG_LIBTOOL])])dnl

AC_DEFUN(AM_ENABLE_SHARED, [indir([AC_ENABLE_SHARED], $@)])dnl

AC_DEFUN(AM_ENABLE_STATIC, [indir([AC_ENABLE_STATIC], $@)])dnl

AC_DEFUN(AM_DISABLE_SHARED, [indir([AC_DISABLE_SHARED], $@)])dnl

AC_DEFUN(AM_DISABLE_STATIC, [indir([AC_DISABLE_STATIC], $@)])dnl

AC_DEFUN(AM_PROG_LD, [indir([AC_PROG_LD])])dnl

AC_DEFUN(AM_PROG_NM, [indir([AC_PROG_NM])])dnl

dnl This is just to silence aclocal about the macro not being used

ifelse([AC_DISABLE_FAST_INSTALL])dnl