cmake: support clang as the compiler

One can use clang by running cmake like

 $ cmake -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ ..

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 92ed4aa..fdfe3c9 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,7 +12,7 @@ include_directories("${PROJECT_SOURCE_DIR}/include")
 
 include(FindPkgConfig)
 
-if (CMAKE_COMPILER_IS_GNUCC)
+if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
     set(COMMON_COMPILE_FLAGS "-Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers")
     set(COMMON_COMPILE_FLAGS "${COMMON_COMPILE_FLAGS} -fno-strict-aliasing -fno-builtin-memcmp")
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 ${COMMON_COMPILE_FLAGS}")