[4563] | 1 | # lib-ld.m4 serial 4 (gettext-0.18) |
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| 2 | dnl Copyright (C) 1996-2003, 2009-2010 Free Software Foundation, Inc. |
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| 3 | dnl This file is free software; the Free Software Foundation |
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| 4 | dnl gives unlimited permission to copy and/or distribute it, |
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| 5 | dnl with or without modifications, as long as this notice is preserved. |
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| 6 | |
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| 7 | dnl Subroutines of libtool.m4, |
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| 8 | dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision |
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| 9 | dnl with libtool.m4. |
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| 10 | |
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| 11 | dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no. |
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| 12 | AC_DEFUN([AC_LIB_PROG_LD_GNU], |
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| 13 | [AC_CACHE_CHECK([if the linker ($LD) is GNU ld], [acl_cv_prog_gnu_ld], |
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| 14 | [# I'd rather use --version here, but apparently some GNU ld's only accept -v. |
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| 15 | case `$LD -v 2>&1 </dev/null` in |
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| 16 | *GNU* | *'with BFD'*) |
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| 17 | acl_cv_prog_gnu_ld=yes ;; |
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| 18 | *) |
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| 19 | acl_cv_prog_gnu_ld=no ;; |
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| 20 | esac]) |
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| 21 | with_gnu_ld=$acl_cv_prog_gnu_ld |
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| 22 | ]) |
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| 23 | |
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| 24 | dnl From libtool-1.4. Sets the variable LD. |
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| 25 | AC_DEFUN([AC_LIB_PROG_LD], |
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| 26 | [AC_ARG_WITH([gnu-ld], |
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| 27 | [ --with-gnu-ld assume the C compiler uses GNU ld [default=no]], |
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| 28 | test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no) |
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| 29 | AC_REQUIRE([AC_PROG_CC])dnl |
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| 30 | AC_REQUIRE([AC_CANONICAL_HOST])dnl |
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| 31 | # Prepare PATH_SEPARATOR. |
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| 32 | # The user is always right. |
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| 33 | if test "${PATH_SEPARATOR+set}" != set; then |
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| 34 | echo "#! /bin/sh" >conf$$.sh |
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| 35 | echo "exit 0" >>conf$$.sh |
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| 36 | chmod +x conf$$.sh |
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| 37 | if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then |
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| 38 | PATH_SEPARATOR=';' |
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| 39 | else |
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| 40 | PATH_SEPARATOR=: |
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| 41 | fi |
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| 42 | rm -f conf$$.sh |
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| 43 | fi |
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| 44 | ac_prog=ld |
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| 45 | if test "$GCC" = yes; then |
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| 46 | # Check if gcc -print-prog-name=ld gives a path. |
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| 47 | AC_MSG_CHECKING([for ld used by GCC]) |
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| 48 | case $host in |
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| 49 | *-*-mingw*) |
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| 50 | # gcc leaves a trailing carriage return which upsets mingw |
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| 51 | ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; |
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| 52 | *) |
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| 53 | ac_prog=`($CC -print-prog-name=ld) 2>&5` ;; |
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| 54 | esac |
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| 55 | case $ac_prog in |
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| 56 | # Accept absolute paths. |
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| 57 | [[\\/]* | [A-Za-z]:[\\/]*)] |
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| 58 | [re_direlt='/[^/][^/]*/\.\./'] |
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| 59 | # Canonicalize the path of ld |
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| 60 | ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'` |
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| 61 | while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do |
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| 62 | ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"` |
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| 63 | done |
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| 64 | test -z "$LD" && LD="$ac_prog" |
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| 65 | ;; |
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| 66 | "") |
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| 67 | # If it fails, then pretend we aren't using GCC. |
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| 68 | ac_prog=ld |
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| 69 | ;; |
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| 70 | *) |
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| 71 | # If it is relative, then search for the first ld in PATH. |
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| 72 | with_gnu_ld=unknown |
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| 73 | ;; |
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| 74 | esac |
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| 75 | elif test "$with_gnu_ld" = yes; then |
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| 76 | AC_MSG_CHECKING([for GNU ld]) |
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| 77 | else |
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| 78 | AC_MSG_CHECKING([for non-GNU ld]) |
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| 79 | fi |
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| 80 | AC_CACHE_VAL([acl_cv_path_LD], |
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| 81 | [if test -z "$LD"; then |
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| 82 | IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}" |
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| 83 | for ac_dir in $PATH; do |
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| 84 | test -z "$ac_dir" && ac_dir=. |
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| 85 | if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then |
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| 86 | acl_cv_path_LD="$ac_dir/$ac_prog" |
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| 87 | # Check to see if the program is GNU ld. I'd rather use --version, |
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| 88 | # but apparently some GNU ld's only accept -v. |
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| 89 | # Break only if it was the GNU/non-GNU ld that we prefer. |
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| 90 | case `"$acl_cv_path_LD" -v 2>&1 < /dev/null` in |
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| 91 | *GNU* | *'with BFD'*) |
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| 92 | test "$with_gnu_ld" != no && break ;; |
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| 93 | *) |
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| 94 | test "$with_gnu_ld" != yes && break ;; |
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| 95 | esac |
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| 96 | fi |
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| 97 | done |
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| 98 | IFS="$ac_save_ifs" |
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| 99 | else |
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| 100 | acl_cv_path_LD="$LD" # Let the user override the test with a path. |
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| 101 | fi]) |
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| 102 | LD="$acl_cv_path_LD" |
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| 103 | if test -n "$LD"; then |
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| 104 | AC_MSG_RESULT([$LD]) |
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| 105 | else |
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| 106 | AC_MSG_RESULT([no]) |
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| 107 | fi |
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| 108 | test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH]) |
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| 109 | AC_LIB_PROG_LD_GNU |
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| 110 | ]) |
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