classes/cmake: add arch conversion routine

cmake expects target architecture strings in the format of uname(2),
which do not always match TARGET_ARCH (e.g. powerpc vs ppc).

(From OE-Core rev: 7c61d022aa9bbba3c2f8a2df46eeb19e2772c89a)

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 11 insertions, 1 deletions

diff --git a/meta/classes/cmake.bbclass b/meta/classes/cmake.bbclass
index c1742461ab..ae3cc025e8 100644
--- a/meta/classes/cmake.bbclass
+++ b/meta/classes/cmake.bbclass
@@ -30,12 +30,22 @@ OECMAKE_EXTRA_ROOT_PATH ?= ""
 OECMAKE_FIND_ROOT_PATH_MODE_PROGRAM = "ONLY"
 OECMAKE_FIND_ROOT_PATH_MODE_PROGRAM_class-native = "BOTH"
 
+# CMake expects target architectures in the format of uname(2),
+# which do not always match TARGET_ARCH, so all the necessary
+# conversions should happen here.
+def map_target_arch_to_uname_arch(target_arch):
+    if target_arch == "powerpc":
+        return "ppc"
+    if target_arch == "powerpc64":
+        return "ppc64"
+    return target_arch
+
 cmake_do_generate_toolchain_file() {
         cat > ${WORKDIR}/toolchain.cmake <<EOF
 # CMake system name must be something like "Linux".
 # This is important for cross-compiling.
 set( CMAKE_SYSTEM_NAME `echo ${TARGET_OS} | sed -e 's/^./\u&/' -e 's/^\(Linux\).*/\1/'` )
-set( CMAKE_SYSTEM_PROCESSOR ${TARGET_ARCH} )
+set( CMAKE_SYSTEM_PROCESSOR ${@map_target_arch_to_uname_arch(d.getVar('TARGET_ARCH', True))} )
 set( CMAKE_C_COMPILER ${OECMAKE_C_COMPILER} )
 set( CMAKE_CXX_COMPILER ${OECMAKE_CXX_COMPILER} )
 set( CMAKE_ASM_COMPILER ${OECMAKE_C_COMPILER} )