ports/152480: [Patch] fix build of libffi with clang on amd64

[Koop Mast]

>Number:         152480
>Category:       ports
>Synopsis:       [Patch] fix build of libffi with clang on amd64
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          update
>Submitter-Id:   current-users
>Arrival-Date:   Mon Nov 22 14:40:12 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Koop Mast
>Release:        FreeBSD 8.1-RELEASE-p1 amd64
>Organization:
>Environment:
System: FreeBSD hermes.rainbow-runner.nl 8.1-RELEASE-p1 FreeBSD 8.1-RELEASE-p1 #3 r212995: Wed Sep 22 14:19:30 CEST 2010 root at hermes.rainbow-runner.nl:/var/obj/usr/src/sys/Hermes amd64


	
>Description:
	$CFLAGS are redundant for compiling .s files.
	GCC stays quiet, but Clang gives a warning of unused arguments.
	The configure check greps for warning, so the check fails.
	Remove $CFLAGS to clang doesn't emit the warnings.

	Patch by Dimitry Andric <dim at FreeBSD.org>
	
>How-To-Repeat:
	
>Fix:

	

--- libffi-clang.diff begins here ---
Index: devel/libffi/files/patch-configure
===================================================================
RCS file: /home/pcvs/ports/devel/libffi/files/patch-configure,v
retrieving revision 1.1
diff -a -u -r1.1 patch-configure
--- devel/libffi/files/patch-configure	18 Jul 2010 21:43:19 -0000	1.1
+++ devel/libffi/files/patch-configure	22 Nov 2010 14:07:36 -0000
@@ -1,5 +1,5 @@
---- configure.orig	2010-06-03 20:49:28.000000000 +0000
-+++ configure	2010-06-03 20:50:18.000000000 +0000
+--- configure.orig	2010-11-22 12:53:14.000000000 +0100
++++ configure	2010-11-22 12:53:26.000000000 +0100
 @@ -12231,6 +12231,9 @@
    powerpc-*-freebsd*)
  	TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
@@ -10,5 +10,12 @@
    powerpc*-*-rtems*)
  	TARGET=POWERPC; TARGETDIR=powerpc
  	;;
-
-
+@@ -14484,7 +14487,7 @@
+ 
+ 	libffi_cv_as_x86_pcrel=yes
+ 	echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
+-	if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
++	if $CC -c conftest.s 2>&1 | grep -i warning > /dev/null; then
+ 	    libffi_cv_as_x86_pcrel=no
+ 	fi
+ 
--- libffi-clang.diff ends here ---


>Release-Note:
>Audit-Trail:
>Unformatted: