84 lines
2.4 KiB
Plaintext
84 lines
2.4 KiB
Plaintext
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# AST_PROG_LD
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# ----------
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# find the pathname to the GNU or non-GNU linker
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AC_DEFUN([AST_PROG_LD],
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[AC_ARG_WITH([gnu-ld],
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[AS_HELP_STRING([--with-gnu-ld],
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[assume the C compiler uses GNU ld @<:@default=no@:>@])],
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[test "$withval" = no || with_gnu_ld=yes],
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[with_gnu_ld=no])
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AC_REQUIRE([AST_PROG_SED])dnl
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AC_REQUIRE([AC_PROG_CC])dnl
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AC_REQUIRE([AC_CANONICAL_HOST])dnl
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AC_REQUIRE([AC_CANONICAL_BUILD])dnl
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ac_prog=ld
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if test "$GCC" = yes; then
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# Check if gcc -print-prog-name=ld gives a path.
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AC_MSG_CHECKING([for ld used by $CC])
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case $host in
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*-*-mingw*)
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# gcc leaves a trailing carriage return which upsets mingw
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ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
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*)
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ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
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esac
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case $ac_prog in
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# Accept absolute paths.
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[[\\/]]* | ?:[[\\/]]*)
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re_direlt='/[[^/]][[^/]]*/\.\./'
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# Canonicalize the pathname of ld
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ac_prog=`echo $ac_prog| $SED 's%\\\\%/%g'`
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while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
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ac_prog=`echo $ac_prog| $SED "s%$re_direlt%/%"`
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done
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test -z "$LD" && LD="$ac_prog"
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;;
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"")
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# If it fails, then pretend we aren't using GCC.
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ac_prog=ld
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;;
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*)
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# If it is relative, then search for the first ld in PATH.
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with_gnu_ld=unknown
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;;
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esac
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elif test "$with_gnu_ld" = yes; then
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AC_MSG_CHECKING([for GNU ld])
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else
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AC_MSG_CHECKING([for non-GNU ld])
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fi
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AC_CACHE_VAL(lt_cv_path_LD,
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[if test -z "$LD"; then
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lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
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for ac_dir in $PATH; do
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IFS="$lt_save_ifs"
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test -z "$ac_dir" && ac_dir=.
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if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
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lt_cv_path_LD="$ac_dir/$ac_prog"
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# Check to see if the program is GNU ld. I'd rather use --version,
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# but apparently some variants of GNU ld only accept -v.
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# Break only if it was the GNU/non-GNU ld that we prefer.
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case `"$lt_cv_path_LD" -v 2>&1 </dev/null` in
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*GNU* | *'with BFD'*)
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test "$with_gnu_ld" != no && break
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;;
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*)
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test "$with_gnu_ld" != yes && break
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;;
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esac
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fi
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done
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IFS="$lt_save_ifs"
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else
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lt_cv_path_LD="$LD" # Let the user override the test with a path.
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fi])
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LD="$lt_cv_path_LD"
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if test -n "$LD"; then
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AC_MSG_RESULT($LD)
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else
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AC_MSG_RESULT(no)
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fi
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test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
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AST_PROG_LD_GNU
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])# AST_PROG_LD
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