Patch OpenCV on Linux to fix invalid syntax

Author: acj

deps/build-deps-linux.sh

@@ -91,6 +91,7 @@ mkdir -p $BASEDIR/opencv
 tar -xzf $SRCDIR/opencv-3.2.0.tar.gz -C $BASEDIR/opencv --strip-components 1
 cd $BASEDIR/opencv
 patch -p1 < $SRCDIR/0001-export-exif-orientation.patch
+patch -p1 < $BASEDIR/patches/0001-remove-invalid-flow-control.patch
 mkdir -p $BUILDDIR/opencv
 cd $BUILDDIR/opencv
 cmake $BASEDIR/opencv -DWITH_JPEG=ON -DWITH_PNG=ON -DWITH_WEBP=ON -DWITH_JASPER=OFF -DWITH_TIFF=OFF -DWITH_OPENEXR=OFF -DWITH_OPENCL=OFF -DBUILD_JPEG=OFF -DBUILD_PNG=OFF -DBUILD_ZLIB=OFF -DENABLE_SSE41=ON -DENABLE_SSE42=ON -DBUILD_SHARED_LIBS=OFF -DBUILD_DOCS=OFF -DBUILD_PERF_TESTS=OFF -DBUILD_TESTS=OFF -DBUILD_opencv_photo=OFF -DBUILD_opencv_video=OFF -DBUILD_opencv_videoio=OFF -DBUILD_opencv_highgui=OFF -DBUILD_opencv_ml=off -DBUILD_opencv_flann=off -DCMAKE_LIBRARY_PATH=$PREFIX/LIB -DCMAKE_INCLUDE_PATH=$PREFIX/INCLUDE -DCMAKE_INSTALL_PREFIX=$PREFIX

deps/patches/0001-remove-invalid-flow-control.patch

@@ -0,0 +1,13 @@
+diff --git a/cmake/OpenCVCompilerOptions.cmake b/cmake/OpenCVCompilerOptions.cmake
+index 5bb0479..3d07b1c 100644
+--- a/cmake/OpenCVCompilerOptions.cmake
++++ b/cmake/OpenCVCompilerOptions.cmake
+@@ -18,8 +18,6 @@ if(ENABLE_CCACHE AND NOT CMAKE_COMPILER_IS_CCACHE)
+         message(STATUS "Unable to compile program with enabled ccache, reverting...")
+         set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${__OLD_RULE_LAUNCH_COMPILE}")
+       endif()
+-    else()
+-      message(STATUS "Looking for ccache - not found")
+     endif()
+   endif()
+ endif()