Support building on e2k (Elbrus) architecture
Signed-off-by: makise-homura <akemi_homura@kurisa.ch>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index f8df140..3fb4d36 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -152,6 +152,8 @@
string(REGEX MATCH "Clang" CMAKE_COMPILER_IS_CLANG "${CMAKE_C_COMPILER_ID}")
+include(CheckCCompilerFlag)
+
if(CMAKE_COMPILER_IS_GNU)
# some warnings we want are not available with old GCC versions
# note: starting with CMake 2.8 we could use CMAKE_C_COMPILER_VERSION
@@ -168,7 +170,18 @@
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wshadow")
endif()
if (GCC_VERSION VERSION_GREATER 5.0)
- set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wformat-signedness")
+ CHECK_C_COMPILER_FLAG("-Wformat-signedness" C_COMPILER_SUPPORTS_WFORMAT_SIGNEDNESS)
+ if(C_COMPILER_SUPPORTS_WFORMAT_SIGNEDNESS)
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wformat-signedness")
+ endif()
+ endif()
+ CHECK_C_COMPILER_FLAG("-Wno-signed-one-bit-field" C_COMPILER_SUPPORTS_WSIGNED_ONE_BIT_FIELD)
+ if(C_COMPILER_SUPPORTS_WSIGNED_ONE_BIT_FIELD)
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-signed-one-bit-field")
+ endif()
+ CHECK_C_COMPILER_FLAG("-Wno-sign-compare" C_COMPILER_SUPPORTS_WSIGN_COMPARE)
+ if(C_COMPILER_SUPPORTS_WSIGN_COMPARE)
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-sign-compare")
endif()
set(CMAKE_C_FLAGS_RELEASE "-O2")
set(CMAKE_C_FLAGS_DEBUG "-O0 -g3")