[117329] trunk/dports/graphics/libpng

[ryandesign at macports.org]

Revision: 117329
          https://trac.macports.org/changeset/117329
Author:   ryandesign at macports.org
Date:     2014-02-21 23:22:18 -0800 (Fri, 21 Feb 2014)
Log Message:
-----------
libpng: fix incompatibility building other ports using libpng with old clang (#42571)

Modified Paths:
--------------
    trunk/dports/graphics/libpng/Portfile

Added Paths:
-----------
    trunk/dports/graphics/libpng/files/
    trunk/dports/graphics/libpng/files/patch-pngconf.h.diff

Modified: trunk/dports/graphics/libpng/Portfile
===================================================================
--- trunk/dports/graphics/libpng/Portfile	2014-02-22 07:03:06 UTC (rev 117328)
+++ trunk/dports/graphics/libpng/Portfile	2014-02-22 07:22:18 UTC (rev 117329)
@@ -5,6 +5,7 @@
 
 name                    libpng
 version                 1.6.9
+revision                1
 set branch              [join [lrange [split ${version} .] 0 1] ""]
 categories              graphics
 maintainers             ryandesign
@@ -32,6 +33,8 @@
 
 depends_lib             port:zlib
 
+patchfiles              patch-pngconf.h.diff
+
 use_parallel_build      yes
 
 test.run                yes

Added: trunk/dports/graphics/libpng/files/patch-pngconf.h.diff
===================================================================
--- trunk/dports/graphics/libpng/files/patch-pngconf.h.diff	                        (rev 0)
+++ trunk/dports/graphics/libpng/files/patch-pngconf.h.diff	2014-02-22 07:22:18 UTC (rev 117329)
@@ -0,0 +1,20 @@
+Fix build with older clang
+http://sourceforge.net/p/libpng/bugs/220/
+http://sourceforge.net/p/libpng/code/ci/dd6679dce8e03e8874ca758440b51c50d11d9890/
+--- pngconf.h.orig	2014-02-05 22:28:54.000000000 -0600
++++ pngconf.h	2014-02-21 15:06:07.000000000 -0600
+@@ -376,9 +376,11 @@
+ #      define PNG_DEPRECATED __attribute__((__deprecated__))
+ #    endif
+ #    if !defined(PNG_PRIVATE)
+-#      if __has_extension(attribute_unavailable_with_message)
+-#        define PNG_PRIVATE __attribute__((__unavailable__(\
+-           "This function is not exported by libpng.")))
++#      ifdef __has_extension
++#        if __has_extension(attribute_unavailable_with_message)
++#          define PNG_PRIVATE __attribute__((__unavailable__(\
++             "This function is not exported by libpng.")))
++#        endif
+ #      endif
+ #    endif
+ #    ifndef PNG_RESTRICT
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