| 1 | # lib-ld.m4 serial 1 (gettext-0.11)
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| 2 | dnl Copyright (C) 1996-2002 Free Software Foundation, Inc.
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| 3 | dnl This file is free software, distributed under the terms of the GNU
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| 4 | dnl General Public License. As a special exception to the GNU General
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| 5 | dnl Public License, this file may be distributed as part of a program
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| 6 | dnl that contains a configuration script generated by Autoconf, under
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| 7 | dnl the same distribution terms as the rest of that program.
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| 8 |
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| 9 | dnl Subroutines of libtool.m4,
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| 10 | dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision
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| 11 | dnl with libtool.m4.
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| 12 |
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| 13 | dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no.
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| 14 | AC_DEFUN([AC_LIB_PROG_LD_GNU],
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| 15 | [AC_CACHE_CHECK([if the linker ($LD) is GNU ld], acl_cv_prog_gnu_ld,
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| 16 | [# I'd rather use --version here, but apparently some GNU ld's only accept -v.
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| 17 | if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
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| 18 | acl_cv_prog_gnu_ld=yes
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| 19 | else
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| 20 | acl_cv_prog_gnu_ld=no
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| 21 | fi])
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| 22 | with_gnu_ld=$acl_cv_prog_gnu_ld
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| 23 | ])
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| 24 |
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| 25 | dnl From libtool-1.4. Sets the variable LD.
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| 26 | AC_DEFUN([AC_LIB_PROG_LD],
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| 27 | [AC_ARG_WITH(gnu-ld,
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| 28 | [ --with-gnu-ld assume the C compiler uses GNU ld [default=no]],
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| 29 | test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)
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| 30 | AC_REQUIRE([AC_PROG_CC])dnl
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| 31 | AC_REQUIRE([AC_CANONICAL_HOST])dnl
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| 32 | ac_prog=ld
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| 33 | if test "$GCC" = yes; then
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| 34 | # Check if gcc -print-prog-name=ld gives a path.
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| 35 | AC_MSG_CHECKING([for ld used by GCC])
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| 36 | case $host in
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| 37 | *-*-mingw*)
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| 38 | # gcc leaves a trailing carriage return which upsets mingw
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| 39 | ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
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| 40 | *)
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| 41 | ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
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| 42 | esac
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| 43 | case $ac_prog in
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| 44 | # Accept absolute paths.
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| 45 | [[\\/]* | [A-Za-z]:[\\/]*)]
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| 46 | [re_direlt='/[^/][^/]*/\.\./']
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| 47 | # Canonicalize the path of ld
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| 48 | ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
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| 49 | while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
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| 50 | ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
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| 51 | done
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| 52 | test -z "$LD" && LD="$ac_prog"
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| 53 | ;;
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| 54 | "")
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| 55 | # If it fails, then pretend we aren't using GCC.
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| 56 | ac_prog=ld
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| 57 | ;;
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| 58 | *)
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| 59 | # If it is relative, then search for the first ld in PATH.
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| 60 | with_gnu_ld=unknown
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| 61 | ;;
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| 62 | esac
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| 63 | elif test "$with_gnu_ld" = yes; then
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| 64 | AC_MSG_CHECKING([for GNU ld])
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| 65 | else
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| 66 | AC_MSG_CHECKING([for non-GNU ld])
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| 67 | fi
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| 68 | AC_CACHE_VAL(acl_cv_path_LD,
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| 69 | [if test -z "$LD"; then
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| 70 | IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
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| 71 | for ac_dir in $PATH; do
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| 72 | test -z "$ac_dir" && ac_dir=.
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| 73 | if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
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| 74 | acl_cv_path_LD="$ac_dir/$ac_prog"
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| 75 | # Check to see if the program is GNU ld. I'd rather use --version,
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| 76 | # but apparently some GNU ld's only accept -v.
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| 77 | # Break only if it was the GNU/non-GNU ld that we prefer.
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| 78 | if "$acl_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then
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| 79 | test "$with_gnu_ld" != no && break
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| 80 | else
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| 81 | test "$with_gnu_ld" != yes && break
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| 82 | fi
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| 83 | fi
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| 84 | done
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| 85 | IFS="$ac_save_ifs"
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| 86 | else
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| 87 | acl_cv_path_LD="$LD" # Let the user override the test with a path.
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| 88 | fi])
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| 89 | LD="$acl_cv_path_LD"
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| 90 | if test -n "$LD"; then
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| 91 | AC_MSG_RESULT($LD)
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| 92 | else
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| 93 | AC_MSG_RESULT(no)
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| 94 | fi
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| 95 | test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
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| 96 | AC_LIB_PROG_LD_GNU
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| 97 | ])
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