Annotation of embedaddon/libiconv/srcm4/lib-ld.m4, revision 1.1.1.3
1.1.1.3 ! misho 1: # lib-ld.m4 serial 9
! 2: dnl Copyright (C) 1996-2003, 2009-2019 Free Software Foundation, Inc.
1.1 misho 3: dnl This file is free software; the Free Software Foundation
4: dnl gives unlimited permission to copy and/or distribute it,
5: dnl with or without modifications, as long as this notice is preserved.
6:
7: dnl Subroutines of libtool.m4,
1.1.1.3 ! misho 8: dnl with replacements s/_*LT_PATH/AC_LIB_PROG/ and s/lt_/acl_/ to avoid
! 9: dnl collision with libtool.m4.
1.1 misho 10:
1.1.1.3 ! misho 11: dnl From libtool-2.4. Sets the variable with_gnu_ld to yes or no.
1.1 misho 12: AC_DEFUN([AC_LIB_PROG_LD_GNU],
13: [AC_CACHE_CHECK([if the linker ($LD) is GNU ld], [acl_cv_prog_gnu_ld],
1.1.1.3 ! misho 14: [# I'd rather use --version here, but apparently some GNU lds only accept -v.
1.1 misho 15: case `$LD -v 2>&1 </dev/null` in
16: *GNU* | *'with BFD'*)
1.1.1.3 ! misho 17: acl_cv_prog_gnu_ld=yes
! 18: ;;
1.1 misho 19: *)
1.1.1.3 ! misho 20: acl_cv_prog_gnu_ld=no
! 21: ;;
1.1 misho 22: esac])
23: with_gnu_ld=$acl_cv_prog_gnu_ld
24: ])
25:
1.1.1.3 ! misho 26: dnl From libtool-2.4. Sets the variable LD.
1.1 misho 27: AC_DEFUN([AC_LIB_PROG_LD],
1.1.1.3 ! misho 28: [AC_REQUIRE([AC_PROG_CC])dnl
1.1 misho 29: AC_REQUIRE([AC_CANONICAL_HOST])dnl
1.1.1.3 ! misho 30:
! 31: AC_ARG_WITH([gnu-ld],
! 32: [AS_HELP_STRING([--with-gnu-ld],
! 33: [assume the C compiler uses GNU ld [default=no]])],
! 34: [test "$withval" = no || with_gnu_ld=yes],
! 35: [with_gnu_ld=no])dnl
! 36:
1.1 misho 37: # Prepare PATH_SEPARATOR.
38: # The user is always right.
39: if test "${PATH_SEPARATOR+set}" != set; then
1.1.1.2 misho 40: # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
41: # contains only /bin. Note that ksh looks also at the FPATH variable,
42: # so we have to set that as well for the test.
43: PATH_SEPARATOR=:
44: (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
45: && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
46: || PATH_SEPARATOR=';'
47: }
1.1 misho 48: fi
1.1.1.3 ! misho 49:
! 50: if test -n "$LD"; then
! 51: AC_MSG_CHECKING([for ld])
! 52: elif test "$GCC" = yes; then
! 53: AC_MSG_CHECKING([for ld used by $CC])
1.1 misho 54: elif test "$with_gnu_ld" = yes; then
55: AC_MSG_CHECKING([for GNU ld])
56: else
57: AC_MSG_CHECKING([for non-GNU ld])
58: fi
1.1.1.3 ! misho 59: if test -n "$LD"; then
! 60: # Let the user override the test with a path.
! 61: :
! 62: else
! 63: AC_CACHE_VAL([acl_cv_path_LD],
! 64: [
! 65: acl_cv_path_LD= # Final result of this test
! 66: ac_prog=ld # Program to search in $PATH
! 67: if test "$GCC" = yes; then
! 68: # Check if gcc -print-prog-name=ld gives a path.
! 69: case $host in
! 70: *-*-mingw*)
! 71: # gcc leaves a trailing carriage return which upsets mingw
! 72: acl_output=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
! 73: *)
! 74: acl_output=`($CC -print-prog-name=ld) 2>&5` ;;
! 75: esac
! 76: case $acl_output in
! 77: # Accept absolute paths.
! 78: [[\\/]]* | ?:[[\\/]]*)
! 79: re_direlt='/[[^/]][[^/]]*/\.\./'
! 80: # Canonicalize the pathname of ld
! 81: acl_output=`echo "$acl_output" | sed 's%\\\\%/%g'`
! 82: while echo "$acl_output" | grep "$re_direlt" > /dev/null 2>&1; do
! 83: acl_output=`echo $acl_output | sed "s%$re_direlt%/%"`
! 84: done
! 85: # Got the pathname. No search in PATH is needed.
! 86: acl_cv_path_LD="$acl_output"
! 87: ac_prog=
! 88: ;;
! 89: "")
! 90: # If it fails, then pretend we aren't using GCC.
! 91: ;;
! 92: *)
! 93: # If it is relative, then search for the first ld in PATH.
! 94: with_gnu_ld=unknown
! 95: ;;
1.1 misho 96: esac
97: fi
1.1.1.3 ! misho 98: if test -n "$ac_prog"; then
! 99: # Search for $ac_prog in $PATH.
! 100: acl_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
! 101: for ac_dir in $PATH; do
! 102: IFS="$acl_save_ifs"
! 103: test -z "$ac_dir" && ac_dir=.
! 104: if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
! 105: acl_cv_path_LD="$ac_dir/$ac_prog"
! 106: # Check to see if the program is GNU ld. I'd rather use --version,
! 107: # but apparently some variants of GNU ld only accept -v.
! 108: # Break only if it was the GNU/non-GNU ld that we prefer.
! 109: case `"$acl_cv_path_LD" -v 2>&1 </dev/null` in
! 110: *GNU* | *'with BFD'*)
! 111: test "$with_gnu_ld" != no && break
! 112: ;;
! 113: *)
! 114: test "$with_gnu_ld" != yes && break
! 115: ;;
! 116: esac
! 117: fi
! 118: done
! 119: IFS="$acl_save_ifs"
! 120: fi
! 121: case $host in
! 122: *-*-aix*)
! 123: AC_COMPILE_IFELSE(
! 124: [AC_LANG_SOURCE(
! 125: [[#if defined __powerpc64__ || defined _ARCH_PPC64
! 126: int ok;
! 127: #else
! 128: error fail
! 129: #endif
! 130: ]])],
! 131: [# The compiler produces 64-bit code. Add option '-b64' so that the
! 132: # linker groks 64-bit object files.
! 133: case "$acl_cv_path_LD " in
! 134: *" -b64 "*) ;;
! 135: *) acl_cv_path_LD="$acl_cv_path_LD -b64" ;;
! 136: esac
! 137: ], [])
! 138: ;;
! 139: sparc64-*-netbsd*)
! 140: AC_COMPILE_IFELSE(
! 141: [AC_LANG_SOURCE(
! 142: [[#if defined __sparcv9 || defined __arch64__
! 143: int ok;
! 144: #else
! 145: error fail
! 146: #endif
! 147: ]])],
! 148: [],
! 149: [# The compiler produces 32-bit code. Add option '-m elf32_sparc'
! 150: # so that the linker groks 32-bit object files.
! 151: case "$acl_cv_path_LD " in
! 152: *" -m elf32_sparc "*) ;;
! 153: *) acl_cv_path_LD="$acl_cv_path_LD -m elf32_sparc" ;;
! 154: esac
! 155: ])
! 156: ;;
! 157: esac
! 158: ])
! 159: LD="$acl_cv_path_LD"
! 160: fi
1.1 misho 161: if test -n "$LD"; then
162: AC_MSG_RESULT([$LD])
163: else
164: AC_MSG_RESULT([no])
1.1.1.3 ! misho 165: AC_MSG_ERROR([no acceptable ld found in \$PATH])
1.1 misho 166: fi
167: AC_LIB_PROG_LD_GNU
168: ])
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