Add a toolchain file for cross compiling.

This file depends on using a toolchain built from OpenEmbedded using
the populate_sdk function.

Signed-off-by: Philip Balister <philip@balister.org>
Signed-off-by: Doug Geiger <doug.geiger@bioradiation.net>

cmake/Toolchains/oe-sdk_cross.cmake

@@ -0,0 +1,13 @@
+set( CMAKE_SYSTEM_NAME Linux )
+#set( CMAKE_C_COMPILER  $ENV{CC} )
+#set( CMAKE_CXX_COMPILER  $ENV{CXX} )
+set( CMAKE_CXX_FLAGS $ENV{CXXFLAGS}  CACHE STRING "" FORCE )
+set( CMAKE_C_FLAGS $ENV{CFLAGS} CACHE STRING "" FORCE ) #same flags for C sources
+set( CMAKE_LDFLAGS_FLAGS ${CMAKE_CXX_FLAGS} CACHE STRING "" FORCE ) #same flags for C sources
+set( CMAKE_LIBRARY_PATH ${OECORE_TARGET_SYSROOT}/usr/lib )
+set( CMAKE_FIND_ROOT_PATH $ENV{OECORE_NATIVE_SYSROOT} $ENV{OECORE_TARGET_SYSROOT} )
+set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )
+set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
+set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
+set ( ORC_INCLUDE_DIRS $ENV{OECORE_TARGET_SYSROOT}/usr/include/orc-0.4 )
+set ( ORC_LIBRARY_DIRS $ENV{OECORE_TARGET_SYSROOT}/usr/lib )