(top level)

2004-03-11  Nathanael Nerode  <neroden@gcc.gnu.org>

	* configure: Regenerate.

2004-03-08  Paolo Bonzini  <bonzini@gnu.org>

	PR ada/14131
	Move language detection to the top level.
	* configure.in: Find default values for the tools as
	soon as possible.  Disable ada if GNAT is not found.
	Emit error message about missing languages.  Expand
	--enable-languages=all for the gcc subdirectory.

(config)
2004-03-08  Paolo Bonzini  <bonzini@gnu.org>

	PR ada/14131
	Move language detection to the top level.
	* acx.m4 (ACX_PROG_GNAT): New macro, moved here
	from the gcc subdirectory.

2004-03-09  Hans-Peter Nilsson  <hp@axis.com>

	* accross.m4 (AC_C_BIGENDIAN_CROSS): Compile endian probe with
	"-c".  Properly quote parameter for AC_MSG_ERROR.

3 files changed, 49 insertions, 2 deletions

diff --git a/config/ChangeLog b/config/ChangeLog
index 85868b4..7a970b7 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,15 @@
+2004-03-08  Paolo Bonzini  <bonzini@gnu.org>
+
+	PR ada/14131
+	Move language detection to the top level.
+	* acx.m4 (ACX_PROG_GNAT): New macro, moved here
+	from the gcc subdirectory.
+
+2004-03-09  Hans-Peter Nilsson  <hp@axis.com>
+
+	* accross.m4 (AC_C_BIGENDIAN_CROSS): Compile endian probe with
+	"-c".  Properly quote parameter for AC_MSG_ERROR.
+
 2004-01-14  Maciej W. Rozycki  <macro@ds2.pg.gda.pl>
 
 	* acinclude.m4: Quote names of macros to be defined by AC_DEFUN
diff --git a/config/accross.m4 b/config/accross.m4
index a4cebf6..535a6f5 100644
--- a/config/accross.m4
+++ b/config/accross.m4
@@ -64,7 +64,7 @@ void _ebcdic() { char* s = (char*) ebcdic_mm; s = (char*) ebcdic_ii; }
 int main() { _ascii (); _ebcdic (); return 0; }
 EOF
 ] if test -f conftest.c ; then
-     if ${CC-cc} ${CFLAGS} conftest.c -o conftest.o && test -f conftest.o ; then
+     if ${CC-cc} ${CFLAGS} -c conftest.c -o conftest.o && test -f conftest.o ; then
         if test `grep -l BIGenDianSyS conftest.o` ; then
            echo $ac_n ' big endian probe OK, ' 1>&AC_FD_MSG
            ac_cv_c_bigendian=yes
@@ -93,6 +93,6 @@ else
 fi
 AC_DEFINE_UNQUOTED(BYTEORDER, $BYTEORDER, [1234 = LIL_ENDIAN, 4321 = BIGENDIAN])
 if test $ac_cv_c_bigendian = unknown; then
-  AC_MSG_ERROR(unknown endianess - sorry, please pre-set ac_cv_c_bigendian)
+  AC_MSG_ERROR([unknown endianess - sorry, please pre-set ac_cv_c_bigendian])
 fi
 ])
diff --git a/config/acx.m4 b/config/acx.m4
index 96b7c8a..ab7f98a 100644
--- a/config/acx.m4
+++ b/config/acx.m4
@@ -155,3 +155,38 @@ AC_DEFUN([AC_PROG_CPP_WERROR],
 [AC_REQUIRE([AC_PROG_CPP])dnl
 m4_define([AC_CHECK_HEADER],m4_defn([_AC_CHECK_HEADER_OLD]))
 ac_c_preproc_warn_flag=yes])# AC_PROG_CPP_WERROR
+
+# Test for GNAT.
+# We require the gnatbind program, and a compiler driver that
+# understands Ada.  We use the user's CC setting, already found.
+#
+# Sets the shell variable have_gnat to yes or no as appropriate, and
+# substitutes GNATBIND.
+AC_DEFUN([ACX_PROG_GNAT],
+[AC_REQUIRE([AC_CHECK_TOOL_PREFIX])
+AC_REQUIRE([AC_PROG_CC])
+AC_CHECK_TOOL(GNATBIND, gnatbind, no)
+AC_CACHE_CHECK([whether compiler driver understands Ada],
+		 acx_cv_cc_gcc_supports_ada,
+[cat >conftest.adb <<EOF
+procedure conftest is begin null; end conftest;
+EOF
+acx_cv_cc_gcc_supports_ada=no
+# There is a bug in old released versions of GCC which causes the
+# driver to exit successfully when the appropriate language module
+# has not been installed.  This is fixed in 2.95.4, 3.0.2, and 3.1.
+# Therefore we must check for the error message as well as an
+# unsuccessful exit.
+errors=`(${CC} -c conftest.adb) 2>&1 || echo failure`
+if test x"$errors" = x; then
+  acx_cv_cc_gcc_supports_ada=yes
+  break
+fi
+rm -f conftest.*])
+
+if test x$GNATBIND != xno && test x$acx_cv_gcc_supports_ada != xno; then
+  have_gnat=yes
+else
+  have_gnat=no
+fi
+])