[libpng16] Only compile ARM code when PNG_READ_SUPPORTED is defined.

ANNOUNCE

 
-Libpng 1.6.3beta10 - July 2, 2013
+Libpng 1.6.3beta10 - July 3, 2013
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -112,8 +112,9 @@ Version 1.6.3beta09 [June 27, 2013]
   Renamed contrib/tools/png-fix-too-far-back.c to pngfix.c and revised it
     to check all compressed chunks known to libpng.
 
-Version 1.6.3beta10 [July 2, 2013]
+Version 1.6.3beta10 [July 3, 2013]
   Updated documentation to show default behavior of benign errors correctly.
+  Only compile ARM code when PNG_READ_SUPPORTED is defined.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit

CHANGES

@@ -4596,8 +4596,9 @@ Version 1.6.3beta09 [June 27, 2013]
   Renamed contrib/tools/png-fix-too-far-back.c to pngfix.c and revised it
     to check all compressed chunks known to libpng.
 
-Version 1.6.3beta10 [July 2, 2013]
+Version 1.6.3beta10 [July 3, 2013]
   Updated documentation to show default behavior of benign errors correctly.
+  Only compile ARM code when PNG_READ_SUPPORTED is defined.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit

arm/arm_init.c

@@ -16,6 +16,7 @@
 
 #include "../pngpriv.h"
 
+#ifdef PNG_READ_SUPPORTED
 #if PNG_ARM_NEON_OPT > 0
 #ifdef PNG_ARM_NEON_CHECK_SUPPORTED /* Do run-time checks */
 #include <signal.h> /* for sig_atomic_t */
@@ -217,3 +218,4 @@ png_init_filter_functions_neon(png_structp pp, unsigned int bpp)
    }
 }
 #endif /* PNG_ARM_NEON_OPT > 0 */
+#endif /* PNG_READ_SUPPORTED */

arm/filter_neon.S

@@ -20,6 +20,7 @@
 .section .note.GNU-stack,"",%progbits /* mark stack as non-executable */
 #endif
 
+#ifdef PNG_READ_SUPPORTED
 #if PNG_ARM_NEON_OPT > 0
 
 #ifdef __ELF__
@@ -233,3 +234,4 @@ func    png_read_filter_row_paeth3_neon, export=1
         pop             {r4,pc}
 endfunc
 #endif /* PNG_ARM_NEON_OPT > 0 */
+#endif /* PNG_READ_SUPPORTED */