pkg/25907: (patch) graphics/freetype2 needs -fno-strict-aliasing

[Christopher Richards <richards+netbsd%CS.Princeton.EDU@localhost>]

>Number:         25907
>Category:       pkg
>Synopsis:       (patch) graphics/freetype2 needs -fno-strict-aliasing
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jun 12 12:45:00 UTC 2004
>Closed-Date:
>Last-Modified:
>Originator:     Christopher Richards
>Release:        NetBSD 2.0_BETA
>Organization:
>Environment:
        
        
System: NetBSD zembla.localdomain 2.0_BETA NetBSD 2.0_BETA (ZEMBLA) #4: Sun Jun 
6 02:48:45 EDT 2004 
richards%zembla.localdomain@localhost:/usr/obj/sys/arch/i386/compile/ZEMBLA i386
Architecture: i386
Machine: i386
>Description:
        When compiling freetype2-2.1.8 with newer (>= 2.95) versions
        of gcc, the compiler emits many warnings that the source code
        violates strict aliasing rules.
        
>How-To-Repeat:
        Compile the freetype2 package on NetBSD 1.6 or newer.
        
>Fix:
        Patch follows:

Index: graphics/freetype2/Makefile
===================================================================
RCS file: /cvsroot/pkgsrc/graphics/freetype2/Makefile,v
retrieving revision 1.33
diff -u -r1.33 Makefile
--- graphics/freetype2/Makefile 29 May 2004 23:36:10 -0000      1.33
+++ graphics/freetype2/Makefile 12 Jun 2004 12:05:52 -0000
@@ -28,6 +28,7 @@
 PKGCONFIG_OVERRIDE=    builds/unix/freetype2.in
 
 .include "../../mk/bsd.prefs.mk"
+.include "../../mk/compiler.mk"
 
 .if defined(MKTTINTERP) &&     \
   !empty(MKTTINTERP:M[yY][eE][sS])
@@ -45,6 +46,14 @@
 .  endif
 .endif
 
+# source code breaks strict aliasing in gcc >= 2.95
+.if !empty(CC_VERSION:Mgcc-*)
+.  if empty(CC_VERSION:Mgcc-2.*) \
+      || !empty(CC_VERSION:Mgcc-2.95*)
+CFLAGS+=       -fno-strict-aliasing
+.  endif
+.endif
+
 post-configure:
        cd ${WRKSRC} && ${LN} -s builds/unix/unix.mk config.mk
 .if ${OPSYS} == "IRIX"
>Release-Note:
>Audit-Trail:
>Unformatted: