8320a2cbc9
Currently the zephyr port fails to build with some cross-toolsets because warnings from the system headers are being treated as errors. Using -isystem for any includes in TOOLCHAIN_CFLAGS allows us to crank up the warning levels without worrying about newlib headers breaking the build. JerryScript-DCO-1.0-Signed-off-by: Daniel Thompson daniel.thompson@linaro.org