navit/m4/lib-ld.m4

# lib-ld.m4 serial 3 (gettext-0.13)
dnl Copyright (C) 1996-2003 Free Software Foundation, Inc.
dnl This file is free software, distributed under the terms of the GNU
dnl General Public License.  As a special exception to the GNU General
dnl Public License, this file may be distributed as part of a program
dnl that contains a configuration script generated by Autoconf, under
dnl the same distribution terms as the rest of that program.

dnl Subroutines of libtool.m4,
dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision
dnl with libtool.m4.

dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no.
AC_DEFUN([AC_LIB_PROG_LD_GNU],
[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], acl_cv_prog_gnu_ld,
[# I'd rather use --version here, but apparently some GNU ld's only accept -v.
case `$LD -v 2>&1 </dev/null` in
*GNU* | *'with BFD'*)
  acl_cv_prog_gnu_ld=yes ;;
*)
  acl_cv_prog_gnu_ld=no ;;
esac])
with_gnu_ld=$acl_cv_prog_gnu_ld
])

dnl From libtool-1.4. Sets the variable LD.
AC_DEFUN([AC_LIB_PROG_LD],
[AC_ARG_WITH(gnu-ld,
[  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]],
test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)
AC_REQUIRE([AC_PROG_CC])dnl
AC_REQUIRE([AC_CANONICAL_HOST])dnl
# Prepare PATH_SEPARATOR.
# The user is always right.
if test "${PATH_SEPARATOR+set}" != set; then
  echo "#! /bin/sh" >conf$$.sh
  echo  "exit 0"   >>conf$$.sh
  chmod +x conf$$.sh
  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
    PATH_SEPARATOR=';'
  else
    PATH_SEPARATOR=:
  fi
  rm -f conf$$.sh
fi
ac_prog=ld
if test "$GCC" = yes; then
  # Check if gcc -print-prog-name=ld gives a path.
  AC_MSG_CHECKING([for ld used by GCC])
  case $host in
  *-*-mingw*)
    # gcc leaves a trailing carriage return which upsets mingw
    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
  *)
    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
  esac
  case $ac_prog in
    # Accept absolute paths.
    [[\\/]* | [A-Za-z]:[\\/]*)]
      [re_direlt='/[^/][^/]*/\.\./']
      # Canonicalize the path of ld
      ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
        ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
      done
      test -z "$LD" && LD="$ac_prog"
      ;;
  "")
    # If it fails, then pretend we aren't using GCC.
    ac_prog=ld
    ;;
  *)
    # If it is relative, then search for the first ld in PATH.
    with_gnu_ld=unknown
    ;;
  esac
elif test "$with_gnu_ld" = yes; then
  AC_MSG_CHECKING([for GNU ld])
else
  AC_MSG_CHECKING([for non-GNU ld])
fi
AC_CACHE_VAL(acl_cv_path_LD,
[if test -z "$LD"; then
  IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
  for ac_dir in $PATH; do
    test -z "$ac_dir" && ac_dir=.
    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
      acl_cv_path_LD="$ac_dir/$ac_prog"
      # Check to see if the program is GNU ld.  I'd rather use --version,
      # but apparently some GNU ld's only accept -v.
      # Break only if it was the GNU/non-GNU ld that we prefer.
      case `"$acl_cv_path_LD" -v 2>&1 < /dev/null` in
      *GNU* | *'with BFD'*)
        test "$with_gnu_ld" != no && break ;;
      *)
        test "$with_gnu_ld" != yes && break ;;
      esac
    fi
  done
  IFS="$ac_save_ifs"
else
  acl_cv_path_LD="$LD" # Let the user override the test with a path.
fi])
LD="$acl_cv_path_LD"
if test -n "$LD"; then
  AC_MSG_RESULT($LD)
else
  AC_MSG_RESULT(no)
fi
test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
AC_LIB_PROG_LD_GNU
])
1	# lib-ld.m4 serial 3 (gettext-0.13)
2	dnl Copyright (C) 1996-2003 Free Software Foundation, Inc.
3	dnl This file is free software, distributed under the terms of the GNU
4	dnl General Public License. As a special exception to the GNU General
5	dnl Public License, this file may be distributed as part of a program
6	dnl that contains a configuration script generated by Autoconf, under
7	dnl the same distribution terms as the rest of that program.
8
9	dnl Subroutines of libtool.m4,
10	dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision
11	dnl with libtool.m4.
12
13	dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no.
14	AC_DEFUN([AC_LIB_PROG_LD_GNU],
15	[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], acl_cv_prog_gnu_ld,
16	[# I'd rather use --version here, but apparently some GNU ld's only accept -v.
17	case `$LD -v 2>&1 </dev/null` in
18	GNU \| 'with BFD')
19	acl_cv_prog_gnu_ld=yes ;;
20	*)
21	acl_cv_prog_gnu_ld=no ;;
22	esac])
23	with_gnu_ld=$acl_cv_prog_gnu_ld
24	])
25
26	dnl From libtool-1.4. Sets the variable LD.
27	AC_DEFUN([AC_LIB_PROG_LD],
28	[AC_ARG_WITH(gnu-ld,
29	[ --with-gnu-ld assume the C compiler uses GNU ld [default=no]],
30	test "$withval" = no \|\| with_gnu_ld=yes, with_gnu_ld=no)
31	AC_REQUIRE([AC_PROG_CC])dnl
32	AC_REQUIRE([AC_CANONICAL_HOST])dnl
33	# Prepare PATH_SEPARATOR.
34	# The user is always right.
35	if test "${PATH_SEPARATOR+set}" != set; then
36	echo "#! /bin/sh" >conf$$.sh
37	echo "exit 0" >>conf$$.sh
38	chmod +x conf$$.sh
39	if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
40	PATH_SEPARATOR=';'
41	else
42	PATH_SEPARATOR=:
43	fi
44	rm -f conf$$.sh
45	fi
46	ac_prog=ld
47	if test "$GCC" = yes; then
48	# Check if gcc -print-prog-name=ld gives a path.
49	AC_MSG_CHECKING([for ld used by GCC])
50	case $host in
51	--mingw*)
52	# gcc leaves a trailing carriage return which upsets mingw
53	ac_prog=`($CC -print-prog-name=ld) 2>&5 \| tr -d '\015'` ;;
54	*)
55	ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
56	esac
57	case $ac_prog in
58	# Accept absolute paths.
59	[[\\/]* \| [A-Za-z]:[\\/]*)]
60	[re_direlt='/[^/][^/]*/\.\./']
61	# Canonicalize the path of ld
62	ac_prog=`echo $ac_prog\| sed 's%\\\\%/%g'`
63	while echo $ac_prog \| grep "$re_direlt" > /dev/null 2>&1; do
64	ac_prog=`echo $ac_prog\| sed "s%$re_direlt%/%"`
65	done
66	test -z "$LD" && LD="$ac_prog"
67	;;
68	"")
69	# If it fails, then pretend we aren't using GCC.
70	ac_prog=ld
71	;;
72	*)
73	# If it is relative, then search for the first ld in PATH.
74	with_gnu_ld=unknown
75	;;
76	esac
77	elif test "$with_gnu_ld" = yes; then
78	AC_MSG_CHECKING([for GNU ld])
79	else
80	AC_MSG_CHECKING([for non-GNU ld])
81	fi
82	AC_CACHE_VAL(acl_cv_path_LD,
83	[if test -z "$LD"; then
84	IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
85	for ac_dir in $PATH; do
86	test -z "$ac_dir" && ac_dir=.
87	if test -f "$ac_dir/$ac_prog" \|\| test -f "$ac_dir/$ac_prog$ac_exeext"; then
88	acl_cv_path_LD="$ac_dir/$ac_prog"
89	# Check to see if the program is GNU ld. I'd rather use --version,
90	# but apparently some GNU ld's only accept -v.
91	# Break only if it was the GNU/non-GNU ld that we prefer.
92	case `"$acl_cv_path_LD" -v 2>&1 < /dev/null` in
93	GNU \| 'with BFD')
94	test "$with_gnu_ld" != no && break ;;
95	*)
96	test "$with_gnu_ld" != yes && break ;;
97	esac
98	fi
99	done
100	IFS="$ac_save_ifs"
101	else
102	acl_cv_path_LD="$LD" # Let the user override the test with a path.
103	fi])
104	LD="$acl_cv_path_LD"
105	if test -n "$LD"; then
106	AC_MSG_RESULT($LD)
107	else
108	AC_MSG_RESULT(no)
109	fi
110	test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
111	AC_LIB_PROG_LD_GNU
112	])