[at-spi2-core/gi] More fixes for dbind

[Mike Gorse <mgorse src gnome org>]

commit 516c2a8527776ff696c707b21e8e0d0362af52ef
Author: Mike Gorse <mgorse novell com>
Date:   Tue Oct 26 10:41:15 2010 -0400

    More fixes for dbind

 acinclude.m4 |   43 +++++++++++++++++++++++++++++++++++++++++++
 configure.ac |   13 +++++++++++++
 2 files changed, 56 insertions(+), 0 deletions(-)
---
diff --git a/acinclude.m4 b/acinclude.m4
new file mode 100644
index 0000000..6eb7916
--- /dev/null
+++ b/acinclude.m4
@@ -0,0 +1,43 @@
+#######################
+# type alignment test #
+#######################
+
+AC_DEFUN([DBIND_CHECK_ALIGNOF],
+	[changequote(<<, >>)dnl
+	dnl The name to #define.
+	define(<<AC_TYPE_NAME>>,
+		translit(dbind_alignof_$1, [a-z *], [A-Z_P]))dnl
+	dnl The cache variable name.
+	define(<<AC_CV_NAME>>,
+		translit(ac_cv_alignof_$1, [ *], [_p]))dnl
+	changequote([, ])dnl
+	AC_MSG_CHECKING(alignment of $1)
+	AC_CACHE_VAL(AC_CV_NAME,
+		[AC_TRY_RUN(
+			[ #include <stdio.h>
+                          #include <stdlib.h>
+                          #define DBUS_API_SUBJECT_TO_CHANGE
+			  #include <dbus/dbus.h>
+			typedef struct {char s1;} dbind_struct;
+			typedef void *dbind_pointer;
+			struct test {char s1; $1 s2;};
+			main()
+			{
+			FILE *f=fopen("conftestval", "w");
+			if (!f) exit(1);
+			fprintf(f, "%d\n", &(((struct test*)0)->s2));
+			exit(0);
+			} ],
+			AC_CV_NAME=`cat conftestval`,
+			AC_CV_NAME=0, AC_CV_NAME=0)
+		])dnl
+	AC_MSG_RESULT($AC_CV_NAME)
+	if test "$AC_CV_NAME" = "0" ; then
+		AC_MSG_ERROR([Failed to find alignment. Check config.log for details.])
+	fi
+	AC_TYPE_NAME=$AC_CV_NAME
+	AC_SUBST(AC_TYPE_NAME)
+	undefine([AC_TYPE_NAME])dnl
+	undefine([AC_CV_NAME])dnl
+])
+
diff --git a/configure.ac b/configure.ac
index 4b49b4a..7100a41 100644
--- a/configure.ac
+++ b/configure.ac
@@ -175,6 +175,19 @@ fi
 AM_CONDITIONAL(RELOCATE, test x$enable_relocate = xyes)
 AC_SUBST(enable_relocate)
 
+dnl find sizes & alignments
+orig_CPPFLAGS=$CPPFLAGS
+CPPFLAGS="$CPPFLAGS $DBUS_CFLAGS"
+DBIND_CHECK_ALIGNOF(char)
+DBIND_CHECK_ALIGNOF(dbus_bool_t)
+DBIND_CHECK_ALIGNOF(dbus_int16_t)
+DBIND_CHECK_ALIGNOF(dbus_int32_t)
+DBIND_CHECK_ALIGNOF(dbus_int64_t)
+DBIND_CHECK_ALIGNOF(double)
+DBIND_CHECK_ALIGNOF(dbind_pointer)
+DBIND_CHECK_ALIGNOF(dbind_struct)
+
+CPPFLAGS=$orig_CPPFLAGS 
 AC_CONFIG_FILES([Makefile
 	xml/Makefile
 	dbind/Makefile