Merge pull request #255 from bovi/cmake-openwrt-any

cmake Toolchain improvement (Target x86, mips, AVR32, ARM, etc.)

cmake/Toolchain-Linux-openwrt-mips.cmake.sample

@@ -1,10 +0,0 @@
-# Toolchain file for building with OpenWRT Toolchain for MIPS.
-# This is a preliminary version for mips outside of the buildroot-ng.
-# The next version should be target independent.
-# Further improvements:
-#   - use ENV variables in OpenWRT toolchain (like HOSTCC, TARGET_CC)
-#   - set flags properly for host and target
-
-set(CMAKE_SYSTEM_NAME Linux)
-set(TOOLCHAIN_PREFIX mips-openwrt-linux)
-set(CMAKE_C_COMPILER ${TOOLCHAIN_PREFIX}-gcc)

cmake/Toolchain-OpenWRT-ANY.cmake

@@ -0,0 +1,13 @@
+# Toolchain file for building with OpenWRT Toolchain for ANY OpenWRT Target.
+# Following prequisition are necessary:
+#   - latest cmake version
+#   - mruby OpenWRT Package file (not yet in distribution)
+
+# Switch to Cross Compile by setting the system name
+SET(CMAKE_SYSTEM_NAME Linux)
+
+# We show CMAKE the compiler, the rest will be guessed by the Toolchain
+SET(CMAKE_C_COMPILER "$ENV{OPENWRT_TOOLCHAIN}/bin/$ENV{OPENWRT_TARGETCC}")
+
+# We define an own release flag so that we can adapt the optimal C_FLAGS
+SET(CMAKE_C_FLAGS_OPENWRT "$ENV{OPENWRT_TARGETFLAGS}")