package/libcamera: needs faligned-new

Fixes:

  - http://autobuild.buildroot.net/results/2db7292e251ce81d31187c3a9eb36dbc9236bd07

  ../src/libcamera/v4l2_videodevice.cpp: In member function 'int libcamera::V4L2VideoDevice::allocateBuffers(unsigned int, std::vector<std::unique_ptr<libcamera::FrameBuffer> >*)':
  ../src/libcamera/v4l2_videodevice.cpp:1139:39: error: 'new' of type 'libcamera::V4L2BufferCache' with extended alignment 8 [-Werror=aligned-new=]
   1139 |  cache_ = new V4L2BufferCache(*buffers);
        |                                       ^
  ../src/libcamera/v4l2_videodevice.cpp:1139:39: note: uses 'void* operator new(std::size_t)', which does not have an alignment parameter
  ../src/libcamera/v4l2_videodevice.cpp:1139:39: note: use '-faligned-new' to enable C++17 over-aligned new support
  ../src/libcamera/v4l2_videodevice.cpp: In member function 'int libcamera::V4L2VideoDevice::importBuffers(unsigned int)':
  ../src/libcamera/v4l2_videodevice.cpp:1315:36: error: 'new' of type 'libcamera::V4L2BufferCache' with extended alignment 8 [-Werror=aligned-new=]
   1315 |  cache_ = new V4L2BufferCache(count);
        |                                    ^
  ../src/libcamera/v4l2_videodevice.cpp:1315:36: note: uses 'void* operator new(std::size_t)', which does not have an alignment parameter
  ../src/libcamera/v4l2_videodevice.cpp:1315:36: note: use '-faligned-new' to enable C++17 over-aligned new support

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libcamera/libcamera.mk

@@ -36,6 +36,10 @@ LIBCAMERA_LICENSE_FILES = \
 	LICENSES/CC0-1.0.txt \
 	LICENSES/CC-BY-SA-4.0.txt
 
+ifeq ($(BR2_TOOLCHAIN_GCC_AT_LEAST_7),y)
+LIBCAMERA_CXXFLAGS = -faligned-new
+endif
+
 ifeq ($(BR2_PACKAGE_LIBCAMERA_V4L2),y)
 LIBCAMERA_CONF_OPTS += -Dv4l2=true
 else