* lib/libjava.exp (test_libjava_from_javac): Don't create .o files
[official-gcc.git] / config / acx.m4
blob4e16bcd31b59bb408fcfa7522dbdf888001d4e58
1 # Autoconf M4 include file defining utility macros for complex Canadian
2 # cross builds.
4 ####
5 # _NCN_TOOL_PREFIXES:  Some stuff that oughtta be done in AC_CANONICAL_SYSTEM 
6 # or AC_INIT.
7 # These demand that AC_CANONICAL_SYSTEM be called beforehand.
8 AC_DEFUN([_NCN_TOOL_PREFIXES],
9 [ncn_tool_prefix=
10 test -n "$host_alias" && ncn_tool_prefix=$host_alias-
11 ncn_target_tool_prefix=
12 test -n "$target_alias" && ncn_target_tool_prefix=$target_alias-
13 ]) []dnl # _NCN_TOOL_PREFIXES
15 ####
16 # NCN_CHECK_TARGET_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
17 # Like AC_CHECK_TOOL, but tries a prefix of the target, not the host.
18 # Code is pretty much lifted from autoconf2.53.
20 AC_DEFUN([NCN_CHECK_TARGET_TOOL],
21 [AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
22 if test -n "$ncn_target_tool_prefix"; then
23   AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}$2], 
24                 [${ncn_target_tool_prefix}$2], , [$4])
26 if test -z "$ac_cv_prog_$1" ; then
27   ncn_cv_$1=$$1
28   AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [$3], [$4])
29   $1=$ncn_cv_$1
30 else
31   $1="$ac_cv_prog_$1"
33 ]) []dnl # NCN_CHECK_TARGET_TOOL
36 ####
37 # NCN_STRICT_CHECK_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
38 # Like AC_CHECK_TOOL, but requires the prefix if build!=host.
40 AC_DEFUN([NCN_STRICT_CHECK_TOOL],
41 [AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
42 if test -n "$ncn_tool_prefix"; then
43   AC_CHECK_PROG([$1], [${ncn_tool_prefix}$2], 
44                 [${ncn_tool_prefix}$2], , [$4])
46 if test -z "$ac_cv_prog_$1" ; then
47   if test $build = $host ; then
48     ncn_cv_$1=$$1
49     AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [ifelse([$3],[],[$2],[$3])], [$4]) 
50     $1=$ncn_cv_$1
51   else
52     $1="ifelse([$3],[],[${ncn_tool_prefix}$2],[$3])"
53   fi
54 else
55   $1="$ac_cv_prog_$1"
57 ]) []dnl # NCN_STRICT_CHECK_TOOL
60 ####
61 # NCN_STRICT_CHECK_TARGET_TOOL(variable, prog-to-check-for,[value-if-not-found],[path])
62 # Like NCN_CHECK_TARGET_TOOL, but requires the prefix if build!=target.
64 AC_DEFUN([NCN_STRICT_CHECK_TARGET_TOOL],
65 [AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl
66 if test -n "$ncn_target_tool_prefix"; then
67   AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}$2], 
68                 [${ncn_target_tool_prefix}$2], , [$4])
70 if test -z "$ac_cv_prog_$1" ; then
71   if test $build = $target ; then
72     ncn_cv_$1=$$1
73     AC_CHECK_PROG([ncn_cv_$1], [$2], [$2], [ifelse([$3],[],[$2],[$3])], [$4]) 
74     $1=$ncn_cv_$1
75   else
76     $1="ifelse([$3],[],[${ncn_target_tool_prefix}$2],[$3])"
77   fi
78 else
79   $1="$ac_cv_prog_$1"
81 ]) []dnl # NCN_STRICT_CHECK_TARGET_TOOL