Add upstream patch to fix build on aarch64 (NEON issues)

libpng-fix-arm-neon.patch

@@ -0,0 +1,39 @@
+diff --git a/configure.ac b/configure.ac
+index d60a5ab..df399e2 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -283,17 +283,21 @@ AC_ARG_ENABLE([arm-neon],
+    [case "$enableval" in
+       no|off)
+          # disable the default enabling on __ARM_NEON__ systems:
++         AC_DEFINE([PNG_ARM_NEON], [], [ARM NEON support])
+          AC_DEFINE([PNG_ARM_NEON_OPT], [0],
+                    [Disable ARM Neon optimizations])
+          # Prevent inclusion of the assembler files below:
+          enable_arm_neon=no;;
+       check)
++         AC_DEFINE([PNG_ARM_NEON], [], [ARM NEON support])
+          AC_DEFINE([PNG_ARM_NEON_CHECK_SUPPORTED], [],
+                    [Check for ARM Neon support at run-time]);;
+       api)
++         AC_DEFINE([PNG_ARM_NEON], [], [ARM NEON support])
+          AC_DEFINE([PNG_ARM_NEON_API_SUPPORTED], [],
+                    [Turn on ARM Neon optimizations at run-time]);;
+       yes|on)
++         AC_DEFINE([PNG_ARM_NEON], [], [ARM NEON support])
+          AC_DEFINE([PNG_ARM_NEON_OPT], [2],
+                    [Enable ARM Neon optimizations])
+          AC_MSG_WARN([--enable-arm-neon: please specify 'check' or 'api', if]
+diff --git a/pngpriv.h b/pngpriv.h
+index aa63cfa..a5f72b1 100644
+--- a/pngpriv.h
++++ b/pngpriv.h
+@@ -123,7 +123,7 @@
+     * Note that gcc-4.9 defines __ARM_NEON instead of __ARM_NEON__, so we
+     * check both variants.
+     */
+-#  if (defined(__ARM_NEON__) || defined(__ARM_NEON)) && \
++#  if defined(PNG_ARM_NEON) && (defined(__ARM_NEON__) || defined(__ARM_NEON)) && \
+    defined(PNG_ALIGNED_MEMORY_SUPPORTED)
+ #     define PNG_ARM_NEON_OPT 2
+ #  else

libpng.spec

@@ -2,7 +2,7 @@ Summary: A library of functions for manipulating PNG image format files
 Name: libpng
 Epoch: 2
 Version: 1.6.14
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: zlib
 Group: System Environment/Libraries
 URL: http://www.libpng.org/pub/png/
@@ -10,14 +10,12 @@ URL: http://www.libpng.org/pub/png/
 # Note: non-current tarballs get moved to the history/ subdirectory,
 # so look there if you fail to retrieve the version you want
 Source0: ftp://ftp.simplesystems.org/pub/libpng/png/src/libpng16/libpng-%{version}.tar.gz
-
 Source1: pngusr.dfa
-
 Patch0: libpng-multilib.patch
+Patch1: libpng-fix-arm-neon.patch
 
-BuildRequires: zlib-devel, pkgconfig, libtool
-BuildRequires: autoconf >= 2.68
-BuildRequires: automake
+BuildRequires: zlib-devel
+BuildRequires: autoconf automake libtool
 
 %description
 The libpng package contains a library of functions for creating and
@@ -63,15 +61,14 @@ The libpng-tools package contains tools used by the authors of libpng.
 
 %prep
 %setup -q
-
 # Provide pngusr.dfa for build.
 cp -p %{SOURCE1} .
 
 %patch0 -p1
+%patch1 -p1 -b .arm
 
 %build
-autoreconf -vi
-
+autoreconf -vif
 %configure
 make %{?_smp_mflags} DFA_XTRA=pngusr.dfa
 
@@ -110,6 +107,9 @@ make check
 %{_bindir}/pngfix
 
 %changelog
+* Mon Nov  3 2014 Peter Robinson <pbrobinson@fedoraproject.org> 2:1.6.14-2
+- Add upstream patch to fix build on aarch64 (NEON issues)
+
 * Mon Oct 27 2014 Petr Hracek <phracek@redhat.com> - 2:1.6.14-1
 - Update to libpng 1.6.14 for minor bug fixes (#1147423)