1# lib-ld.m4 serial 5 (gettext-0.18.2) 2dnl Copyright (C) 1996-2003, 2009-2011 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7dnl Subroutines of libtool.m4, 8dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision 9dnl with libtool.m4. 10 11dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no. 12AC_DEFUN([AC_LIB_PROG_LD_GNU], 13[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], [acl_cv_prog_gnu_ld], 14[# I'd rather use --version here, but apparently some GNU ld's only accept -v. 15case `$LD -v 2>&1 </dev/null` in 16*GNU* | *'with BFD'*) 17 acl_cv_prog_gnu_ld=yes ;; 18*) 19 acl_cv_prog_gnu_ld=no ;; 20esac]) 21with_gnu_ld=$acl_cv_prog_gnu_ld 22]) 23 24dnl From libtool-1.4. Sets the variable LD. 25AC_DEFUN([AC_LIB_PROG_LD], 26[AC_ARG_WITH([gnu-ld], 27[ --with-gnu-ld assume the C compiler uses GNU ld [default=no]], 28test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no) 29AC_REQUIRE([AC_PROG_CC])dnl 30AC_REQUIRE([AC_CANONICAL_HOST])dnl 31# Prepare PATH_SEPARATOR. 32# The user is always right. 33if test "${PATH_SEPARATOR+set}" != set; then 34 # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which 35 # contains only /bin. Note that ksh looks also at the FPATH variable, 36 # so we have to set that as well for the test. 37 PATH_SEPARATOR=: 38 (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \ 39 && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \ 40 || PATH_SEPARATOR=';' 41 } 42fi 43ac_prog=ld 44if test "$GCC" = yes; then 45 # Check if gcc -print-prog-name=ld gives a path. 46 AC_MSG_CHECKING([for ld used by GCC]) 47 case $host in 48 *-*-mingw*) 49 # gcc leaves a trailing carriage return which upsets mingw 50 ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; 51 *) 52 ac_prog=`($CC -print-prog-name=ld) 2>&5` ;; 53 esac 54 case $ac_prog in 55 # Accept absolute paths. 56 [[\\/]* | [A-Za-z]:[\\/]*)] 57 [re_direlt='/[^/][^/]*/\.\./'] 58 # Canonicalize the path of ld 59 ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'` 60 while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do 61 ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"` 62 done 63 test -z "$LD" && LD="$ac_prog" 64 ;; 65 "") 66 # If it fails, then pretend we aren't using GCC. 67 ac_prog=ld 68 ;; 69 *) 70 # If it is relative, then search for the first ld in PATH. 71 with_gnu_ld=unknown 72 ;; 73 esac 74elif test "$with_gnu_ld" = yes; then 75 AC_MSG_CHECKING([for GNU ld]) 76else 77 AC_MSG_CHECKING([for non-GNU ld]) 78fi 79AC_CACHE_VAL([acl_cv_path_LD], 80[if test -z "$LD"; then 81 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}" 82 for ac_dir in $PATH; do 83 test -z "$ac_dir" && ac_dir=. 84 if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then 85 acl_cv_path_LD="$ac_dir/$ac_prog" 86 # Check to see if the program is GNU ld. I'd rather use --version, 87 # but apparently some GNU ld's only accept -v. 88 # Break only if it was the GNU/non-GNU ld that we prefer. 89 case `"$acl_cv_path_LD" -v 2>&1 < /dev/null` in 90 *GNU* | *'with BFD'*) 91 test "$with_gnu_ld" != no && break ;; 92 *) 93 test "$with_gnu_ld" != yes && break ;; 94 esac 95 fi 96 done 97 IFS="$ac_save_ifs" 98else 99 acl_cv_path_LD="$LD" # Let the user override the test with a path. 100fi]) 101LD="$acl_cv_path_LD" 102if test -n "$LD"; then 103 AC_MSG_RESULT([$LD]) 104else 105 AC_MSG_RESULT([no]) 106fi 107test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH]) 108AC_LIB_PROG_LD_GNU 109]) 110