From: Jan Schmidt <thaytan@mad.scientist.com>
Date: Tue, 26 Feb 2008 09:38:00 +0000 (+0000)
Subject: m4/: Add Dave Schleef's GCC inline assembly detection macro for using in gst-plugins... 
X-Git-Tag: RELEASE-0_10_18~7
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e746d20ef536a73aea9964666c7d5f6d5c9465df;p=platform%2Fupstream%2Fgst-common.git

m4/: Add Dave Schleef's GCC inline assembly detection macro for using in gst-plugins-good in the goom 2k4 plugin.

Original commit message from CVS:
* m4/Makefile.am:
* m4/as-gcc-inline-assembly.m4:
Add Dave Schleef's GCC inline assembly detection macro
for using in gst-plugins-good in the goom 2k4 plugin.
---

diff --git a/ChangeLog b/ChangeLog
index 606a304..77dd26c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2008-02-26  Jan Schmidt  <jan.schmidt@sun.com>
+
+	* m4/Makefile.am:
+	* m4/as-gcc-inline-assembly.m4:
+	Add Dave Schleef's GCC inline assembly detection macro
+	for using in gst-plugins-good in the goom 2k4 plugin.
+
 2008-02-25  Andy Wingo  <wingo@pobox.com>
 
 	* gst-autogen.sh: Instead of only passing certain arguments to
diff --git a/m4/Makefile.am b/m4/Makefile.am
index 3bbf0e9..99ead5c 100644
--- a/m4/Makefile.am
+++ b/m4/Makefile.am
@@ -5,6 +5,7 @@ EXTRA_DIST = \
 	as-compiler-flag.m4 \
 	as-compiler.m4 \
 	as-docbook.m4 \
+	as-gcc-inline-assembly.m4 \
 	as-libtool.m4 \
 	as-libtool-tags.m4 \
 	as-python.m4 \
diff --git a/m4/as-gcc-inline-assembly.m4 b/m4/as-gcc-inline-assembly.m4
new file mode 100644
index 0000000..af32104
--- /dev/null
+++ b/m4/as-gcc-inline-assembly.m4
@@ -0,0 +1,52 @@
+dnl as-gcc-inline-assembly.m4 0.1.0
+
+dnl autostars m4 macro for detection of gcc inline assembly
+
+dnl David Schleef <ds@schleef.org>
+
+dnl $Id$
+
+dnl AS_COMPILER_FLAG(ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED])
+dnl Tries to compile with the given CFLAGS.
+dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags,
+dnl and ACTION-IF-NOT-ACCEPTED otherwise.
+
+AC_DEFUN([AS_GCC_INLINE_ASSEMBLY],
+[
+  AC_MSG_CHECKING([if compiler supports gcc-style inline assembly])
+
+  AC_TRY_COMPILE([], [
+#ifdef __GNUC_MINOR__
+#if (__GNUC__ * 1000 + __GNUC_MINOR__) < 3004
+#error GCC before 3.4 has critical bugs compiling inline assembly
+#endif
+#endif
+__asm__ (""::) ], [flag_ok=yes], [flag_ok=no])
+
+  if test "X$flag_ok" = Xyes ; then
+    $1
+    true
+  else
+    $2
+    true
+  fi
+  AC_MSG_RESULT([$flag_ok])
+])
+
+
+AC_DEFUN([AS_GCC_ASM_POWERPC_FPU],
+[
+  AC_MSG_CHECKING([if compiler supports FPU instructions on PowerPC])
+
+  AC_TRY_COMPILE([], [__asm__ ("fadd 0,0,0"::) ], [flag_ok=yes], [flag_ok=no])
+
+  if test "X$flag_ok" = Xyes ; then
+    $1
+    true
+  else
+    $2
+    true
+  fi
+  AC_MSG_RESULT([$flag_ok])
+])
+