SuperBuild.cmake: pass C, CXX and LINKER flags too

Required for embedded builds

Author: bkueng

cmake/SuperBuild.cmake

@@ -44,6 +44,9 @@ if(NOT microcdr_FOUND)
             -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
             -DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE}
             -DCMAKE_SYSROOT:PATH=${CMAKE_SYSROOT}
+            -DCMAKE_C_FLAGS:STRING=${CMAKE_C_FLAGS}
+            -DCMAKE_CXX_FLAGS:STRING=${CMAKE_CXX_FLAGS}
+            -DCMAKE_EXE_LINKER_FLAGS:STRING=${CMAKE_EXE_LINKER_FLAGS}
             -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
             -DCONFIG_BIG_ENDIANNESS=${UCLIENT_BIG_ENDIANNESS}
             -DUCDR_PIC=${UCLIENT_PIC}