[libpng16] Fixed missing dependency in --prefix builds The intermediate

internal 'prefix.h' file can only be generated correctly after
pnglibconf.h, however the dependency was not in Makefile.am.  The
symptoms are unpredictable depending on the order make chooses to
build pngprefix.h and pnglibconf.h, often the error goes unnoticed
because there is a system pnglibconf.h to use instead.

ANNOUNCE

 
-Libpng 1.6.0rc06 - February 8, 2013
+Libpng 1.6.0rc06 - February 9, 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.
@@ -609,13 +609,13 @@ Version 1.6.0rc04 [February 7, 2013]
 Version 1.6.0rc05 [February 8, 2013]
   Update manual about png_get_palette_max().
 
-Version 1.6.0rc06 [February 8, 2013]
-
-  ===========================================================================
-                       NOTICE November 17, 2012:
-     The location of the git repository at SourceForge has changed.
-               Visit http://libpng.sf.net/ for details.
-  ===========================================================================
+Version 1.6.0rc06 [February 9, 2013]
+  Fixed missing dependency in --prefix builds The intermediate
+    internal 'prefix.h' file can only be generated correctly after
+    pnglibconf.h, however the dependency was not in Makefile.am.  The
+    symptoms are unpredictable depending on the order make chooses to
+    build pngprefix.h and pnglibconf.h, often the error goes unnoticed
+    because there is a system pnglibconf.h to use instead.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit

CHANGES

@@ -4363,7 +4363,13 @@ Version 1.6.0rc04 [February 7, 2013]
 Version 1.6.0rc05 [February 8, 2013]
   Update manual about png_get_palette_max().
 
-Version 1.6.0rc06 [February 8, 2013]
+Version 1.6.0rc06 [February 9, 2013]
+  Fixed missing dependency in --prefix builds The intermediate
+    internal 'prefix.h' file can only be generated correctly after
+    pnglibconf.h, however the dependency was not in Makefile.am.  The
+    symptoms are unpredictable depending on the order make chooses to
+    build pngprefix.h and pnglibconf.h, often the error goes unnoticed
+    because there is a system pnglibconf.h to use instead.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit

Makefile.am

@@ -119,6 +119,7 @@ $(PNGLIB_BASENAME)-config: libpng-config
 scripts/sym.out scripts/vers.out: png.h pngconf.h pnglibconf.h
 scripts/prefix.out: png.h pngconf.h pnglibconf.out
 scripts/symbols.out: png.h pngconf.h $(srcdir)/scripts/pnglibconf.h.prebuilt
+scripts/intprefix.out: pnglibconf.h
 
 libpng.sym: scripts/sym.out
 	rm -f $@