[xiph-commits] r15746 - trunk/vorbis

[giles at svn.xiph.org]

Author: giles
Date: 2009-03-05 23:55:09 -0800 (Thu, 05 Mar 2009)
New Revision: 15746

Modified:
   trunk/vorbis/configure.ac
Log:
Check that the compiler supports -mv8 before adding it to the command 
line on sun sparc. Issue #1458.

I haven't recieved confirmation this resolves the issue, but I don't see 
how it can do much harm.


Modified: trunk/vorbis/configure.ac
===================================================================
--- trunk/vorbis/configure.ac	2009-03-05 22:23:02 UTC (rev 15745)
+++ trunk/vorbis/configure.ac	2009-03-06 07:55:09 UTC (rev 15746)
@@ -162,9 +162,18 @@
 		CFLAGS="-O20 -Wall -Wextra -ffast-math -D_REENTRANT -fsigned-char"
 		PROFILE="-pg -g -O20 -ffast-math -D_REENTRANT -fsigned-char";;
 	sparc-sun-*)
-		DEBUG="-g -Wall -Wextra -D__NO_MATH_INLINES -fsigned-char -mv8"
-		CFLAGS="-O20 -Wall -Wextra -ffast-math -D__NO_MATH_INLINES -fsigned-char -mv8"
-		PROFILE="-pg -g -O20 -D__NO_MATH_INLINES -fsigned-char -mv8" ;;
+		sparc_cpu=""
+		AC_MSG_CHECKING([if gcc supports -mv8])
+		old_cflags="$CFLAGS"
+		CFLAGS="$CFLAGS -mv8"
+		AC_TRY_COMPILE(, [return 0;], [
+			AC_MSG_RESULT([yes])
+			sparc_cpu="-mv8"
+		])
+		CFLAGS="$old_cflags"
+		DEBUG="-g -Wall -Wextra -D__NO_MATH_INLINES -fsigned-char $sparc_cpu"
+		CFLAGS="-O20 -Wall -Wextra -ffast-math -D__NO_MATH_INLINES -fsigned-char $sparc_cpu"
+		PROFILE="-pg -g -O20 -D__NO_MATH_INLINES -fsigned-char $sparc_cpu" ;;
 	*-*-darwin*)
 		DEBUG="-DDARWIN -fno-common -force_cpusubtype_ALL -Wall -g -O0 -fsigned-char"
 		CFLAGS="-DDARWIN -fno-common -force_cpusubtype_ALL -Wall -g -O4 -ffast-math -fsigned-char"