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-rw-r--r--Modules/Compiler/AppleClang-C.cmake13
1 files changed, 13 insertions, 0 deletions
diff --git a/Modules/Compiler/AppleClang-C.cmake b/Modules/Compiler/AppleClang-C.cmake
index 2794f52..bd98193 100644
--- a/Modules/Compiler/AppleClang-C.cmake
+++ b/Modules/Compiler/AppleClang-C.cmake
@@ -1,6 +1,19 @@
include(Compiler/Clang)
__compiler_clang(C)
+
+if(NOT "x${CMAKE_C_SIMULATE_ID}" STREQUAL "xMSVC")
+ if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
+ AND CMAKE_GENERATOR MATCHES "Makefiles"
+ AND CMAKE_DEPFILE_FLAGS_C)
+ # dependencies are computed by the compiler itself
+ set(CMAKE_C_DEPFILE_FORMAT gcc)
+ set(CMAKE_C_DEPENDS_USE_COMPILER TRUE)
+ endif()
+endif()
+
+set(CMAKE_C_COMPILE_OPTIONS_EXPLICIT_LANGUAGE -x c)
+
if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.0)
set(CMAKE_C90_STANDARD_COMPILE_OPTION "-std=c90")
set(CMAKE_C90_EXTENSION_COMPILE_OPTION "-std=gnu90")