gpu-viv-bin-mx6q: fix compiling issues with EGL_API_FB

To compile with Vivante header and use framebuffer, it is necessary to
pass option -DEGL_API_FB. This option is declared in pkg-config file of
Vivante library. But many packages (especialy qt5 components) does not
consider these flags.

So instead of patching every packages that use EGL, it is more
convenient to patch Vivante headers.

This commit add #define EGL_API_FB on top of eglvivante.h when
necessary.

[Thomas: fix syntax error.]

Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>
Tested-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/freescale-imx/gpu-viv-bin-mx6q/egl.pc

@@ -7,4 +7,4 @@ Name: egl
 Description: Freescale gpu-viv-bin-mx6q implementation of EGL
 Version: 1.0
 Libs: -L${libdir} -lGAL -lEGL
-Cflags: -I${includedir}/ -DEGL_API_FB=1
+Cflags: -I${includedir}/

package/freescale-imx/gpu-viv-bin-mx6q/glesv2.pc

@@ -7,4 +7,4 @@ Name: glesv2
 Description: Freescale gpu-viv-bin-mx6q implementation of OpenGL ESv2
 Version: 2.0
 Libs: -L${libdir} -lGAL -lEGL -lGLESv2
-Cflags: -I${includedir}/ -DEGL_API_FB=1
+Cflags: -I${includedir}/

package/freescale-imx/gpu-viv-bin-mx6q/gpu-viv-bin-mx6q.mk

@@ -46,16 +46,22 @@ define GPU_VIV_BIN_MX6Q_BUILD_CMDS
 	ln -sf libGL.so.1.2 $(@D)/usr/lib/libGL.so.1.2.0
 endef
 
+ifeq ($(GPU_VIV_BIN_MX6Q_LIB_TARGET),fb)
+define GPU_VIV_BIN_MX6Q_FIXUP_FB_HEADERS
+	$(SED) '/#define EGLAPIENTRY/ a \
+		#if !defined(EGL_API_X11) && !defined(EGL_API_DFB) && !defined(EGL_API_FB) \n\
+		#define EGL_API_FB \n\
+		#endif' $(STAGING_DIR)/usr/include/EGL/eglvivante.h
+endef
+endif
+
 define GPU_VIV_BIN_MX6Q_INSTALL_STAGING_CMDS
 	cp -r $(@D)/usr/* $(STAGING_DIR)/usr
+	$(GPU_VIV_BIN_MX6Q_FIXUP_FB_HEADERS)
 	for lib in egl glesv2 vg; do \
 		$(INSTALL) -m 0644 -D \
 			package/freescale-imx/gpu-viv-bin-mx6q/$${lib}.pc \
 			$(STAGING_DIR)/usr/lib/pkgconfig/$${lib}.pc; \
-		if [ "$(GPU_VIV_BIN_MX6Q_LIB_TARGET)" != "fb" ]; then \
-			$(SED) "s/-DEGL_API_FB=1//" \
-				$(STAGING_DIR)/usr/lib/pkgconfig/$${lib}.pc; \
-		fi; \
 	done
 endef
 

package/freescale-imx/gpu-viv-bin-mx6q/vg.pc

@@ -7,4 +7,4 @@ Name: vg
 Description: Freescale gpu-viv-bin-mx6q implementation of OpenVG
 Version: 1.1
 Libs: -L${libdir} -lGAL -lEGL -lOpenVG
-Cflags: -I${includedir}/ -DEGL_API_FB=1
+Cflags: -I${includedir}/