[meta-oe][PATCH 1/2] libgphoto2: fix compatibility with libjpeg-turbo

[Patrick Ohly <patrick.ohly@intel.com>]

The libjpeg-turbo update to 1.5.0 broke components which embedd their
own, conflicting definitions of the jpeg_mem functions.

Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
---
 .../jpeg_memsrcdest-extend-feature-check.patch     | 97 ++++++++++++++++++++++
 .../recipes-graphics/gphoto2/libgphoto2_2.5.8.bb   |  1 +
 2 files changed, 98 insertions(+)
 create mode 100644 meta-oe/recipes-graphics/gphoto2/libgphoto2-2.5.8/jpeg_memsrcdest-extend-feature-check.patch

diff --git a/meta-oe/recipes-graphics/gphoto2/libgphoto2-2.5.8/jpeg_memsrcdest-extend-feature-check.patch b/meta-oe/recipes-graphics/gphoto2/libgphoto2-2.5.8/jpeg_memsrcdest-extend-feature-check.patch
new file mode 100644
index 0000000..810d025
--- /dev/null
+++ b/meta-oe/recipes-graphics/gphoto2/libgphoto2-2.5.8/jpeg_memsrcdest-extend-feature-check.patch
@@ -0,0 +1,97 @@
+From d4f7fdc9de00562d796287a365408b4c24de5db2 Mon Sep 17 00:00:00 2001
+From: Patrick Ohly <patrick.ohly@intel.com>
+Date: Wed, 15 Jun 2016 10:33:24 +0200
+Subject: [PATCH] jpeg_memsrcdest: extend feature check
+
+libjpeg.h in OpenEmbedded master (from libjpeg-turbo 1.5.0) provides
+these methods if "JPEG_LIB_VERSION >= 80 ||
+defined(MEM_SRCDST_SUPPORTED)".
+
+The support for the jpeg_mem functions was added even when not
+emulating the libjpeg8 API, controlled via the MEM_SRCDST_SUPPORTED
+define, so checking for the version alone is not enough anymore.
+
+See https://github.com/libjpeg-turbo/libjpeg-turbo/commit/ab70623eb29e09e67222be5b9e1ea320fe5aa0e9
+
+This fixes errors about conflicting declarations (signed vs. unsigned
+char).
+
+Upstream-Status: Submitted [https://github.com/gphoto/libgphoto2/pull/64]
+
+Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
+---
+ camlibs/ax203/jpeg_memsrcdest.c   | 4 ++--
+ camlibs/ax203/jpeg_memsrcdest.h   | 4 ++++
+ camlibs/jl2005c/jpeg_memsrcdest.c | 4 ++--
+ camlibs/jl2005c/jpeg_memsrcdest.h | 4 ++++
+ 4 files changed, 12 insertions(+), 4 deletions(-)
+
+diff --git a/camlibs/ax203/jpeg_memsrcdest.c b/camlibs/ax203/jpeg_memsrcdest.c
+index 0ed83b1..5614573 100644
+--- a/camlibs/ax203/jpeg_memsrcdest.c
++++ b/camlibs/ax203/jpeg_memsrcdest.c
+@@ -25,8 +25,8 @@
+ #include "jpeg_memsrcdest.h"
+ 
+ /* libjpeg8 and later come with their own (API compatible) memory source
+-   and dest */
+-#if JPEG_LIB_VERSION < 80
++   and dest, and older versions may have it backported */
++#if JPEG_LIB_VERSION < 80 && !defined(MEM_SRCDST_SUPPORTED)
+ 
+ /* Expanded data source object for memory input */
+ 
+diff --git a/camlibs/ax203/jpeg_memsrcdest.h b/camlibs/ax203/jpeg_memsrcdest.h
+index e971182..b13bf3f 100644
+--- a/camlibs/ax203/jpeg_memsrcdest.h
++++ b/camlibs/ax203/jpeg_memsrcdest.h
+@@ -1,5 +1,7 @@
+ #include <jpeglib.h>
+ 
++#if JPEG_LIB_VERSION < 80 && !defined(MEM_SRCDST_SUPPORTED)
++
+ void
+ jpeg_mem_src (j_decompress_ptr cinfo, unsigned char * buffer,
+ 	unsigned long bufsize);
+@@ -7,3 +9,5 @@ jpeg_mem_src (j_decompress_ptr cinfo, unsigned char * buffer,
+ void
+ jpeg_mem_dest (j_compress_ptr cinfo, unsigned char ** outbuffer,
+ 	unsigned long * outsize);
++
++#endif
+diff --git a/camlibs/jl2005c/jpeg_memsrcdest.c b/camlibs/jl2005c/jpeg_memsrcdest.c
+index 321f926..b65310e 100644
+--- a/camlibs/jl2005c/jpeg_memsrcdest.c
++++ b/camlibs/jl2005c/jpeg_memsrcdest.c
+@@ -25,8 +25,8 @@
+ #include "jpeg_memsrcdest.h"
+ 
+ /* libjpeg8 and later come with their own (API compatible) memory source
+-   and dest */
+-#if JPEG_LIB_VERSION < 80
++   and dest, and older versions may have it backported */
++#if JPEG_LIB_VERSION < 80 && !defined(MEM_SRCDST_SUPPORTED)
+ 
+ /* Expanded data source object for memory input */
+ 
+diff --git a/camlibs/jl2005c/jpeg_memsrcdest.h b/camlibs/jl2005c/jpeg_memsrcdest.h
+index e971182..b13bf3f 100644
+--- a/camlibs/jl2005c/jpeg_memsrcdest.h
++++ b/camlibs/jl2005c/jpeg_memsrcdest.h
+@@ -1,5 +1,7 @@
+ #include <jpeglib.h>
+ 
++#if JPEG_LIB_VERSION < 80 && !defined(MEM_SRCDST_SUPPORTED)
++
+ void
+ jpeg_mem_src (j_decompress_ptr cinfo, unsigned char * buffer,
+ 	unsigned long bufsize);
+@@ -7,3 +9,5 @@ jpeg_mem_src (j_decompress_ptr cinfo, unsigned char * buffer,
+ void
+ jpeg_mem_dest (j_compress_ptr cinfo, unsigned char ** outbuffer,
+ 	unsigned long * outsize);
++
++#endif
+-- 
+2.1.4
+
diff --git a/meta-oe/recipes-graphics/gphoto2/libgphoto2_2.5.8.bb b/meta-oe/recipes-graphics/gphoto2/libgphoto2_2.5.8.bb
index 3de6942..25c82cb 100644
--- a/meta-oe/recipes-graphics/gphoto2/libgphoto2_2.5.8.bb
+++ b/meta-oe/recipes-graphics/gphoto2/libgphoto2_2.5.8.bb
@@ -14,6 +14,7 @@ SRC_URI = "${SOURCEFORGE_MIRROR}/gphoto/libgphoto2-${PV}.tar.bz2;name=libgphoto2
            file://10-camera-libgphoto2.fdi \
            file://40-libgphoto2.rules \
            file://0001-configure.ac-remove-AM_PO_SUBDIRS.patch \
+           file://jpeg_memsrcdest-extend-feature-check.patch \
 "
 
 SRC_URI[libgphoto2.md5sum] = "873ab01aced49c6b92a98e515db5dcef"
-- 
2.1.4