kumquat-buildroot/package/libpng/0002-ignore-symbol-prefix.patch

From dbfea83a7436cbac34cc883ab2b7befacaf02c40 Mon Sep 17 00:00:00 2001
From: Danomi Manchego <danomimanchego123@gmail.com>
Date: Tue, 23 Jun 2015 13:54:42 -0400
Subject: libpng: don't append prefix to symbol names in version script

Even if Blackfin GNU toolchain add prefix '_' to all symbols,
symbol prefix is not accepted in the link flag --version-script.
Don't append prefix in the symbols in the version script file.

Original patch by: Sonic Zhang <sonic.zhang@analog.com>

Rebase to apply cleanly.

Signed-off-by: Danomi Manchego <danomimanchego123@gmail.com>
---
 Makefile.am |    2 +-
 Makefile.in |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index dcc5439..e543c81 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -231,7 +231,7 @@ contrib/tools/pngfix.o: pnglibconf.h
 # interfering with the symbol file format.
 SYMBOL_CFLAGS = -DPNGLIB_LIBNAME='PNG@PNGLIB_MAJOR@@PNGLIB_MINOR@_0'\
 		-DPNGLIB_VERSION='@PNGLIB_VERSION@'\
-		-DSYMBOL_PREFIX='$(SYMBOL_PREFIX)'\
+		-DSYMBOL_PREFIX=''\
 		-DPNG_NO_USE_READ_MACROS -DPNG_BUILDING_SYMBOL_TABLE
 
 if DO_PNG_PREFIX
diff --git a/Makefile.in b/Makefile.in
index 975f931..a3e0552 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -747,7 +747,7 @@ SUFFIXES = .chk .out
 # interfering with the symbol file format.
 SYMBOL_CFLAGS = -DPNGLIB_LIBNAME='PNG@PNGLIB_MAJOR@@PNGLIB_MINOR@_0' \
 	-DPNGLIB_VERSION='@PNGLIB_VERSION@' \
-	-DSYMBOL_PREFIX='$(SYMBOL_PREFIX)' -DPNG_NO_USE_READ_MACROS \
+	-DSYMBOL_PREFIX='' -DPNG_NO_USE_READ_MACROS \
 	-DPNG_BUILDING_SYMBOL_TABLE $(am__append_5)
 
 # EXT_LIST is a list of the possibly library directory extensions, this exists
-- 
1.7.9.5