- set(optCFLAGS "-O3 -finline-functions -funroll-loops -fno-strict-aliasing ")
- if(COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.5")
- set(optCFLAGS "${optCFLAGS}-flto ")
- endif(COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.5")
-else(enable_compile_optimizations)
- set(optCFLAGS "-O0 ")
-endif(enable_compile_optimizations)
+ set(optCFLAGS "-O3 -finline-functions -funroll-loops -fno-strict-aliasing ")
+ if(CMAKE_COMPILER_IS_GNUCC)
+ if(WIN32)
+ if (COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.7")
+ # On windows, we need 4.8 or higher to enable lto because of http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50293
+ set(optCFLAGS "${optCFLAGS} -flto ")
+ endif()
+ else()
+ # On non-windows, 4.6 is enough for that
+ if(COMPILER_C_VERSION_MAJOR_MINOR STRGREATER "4.5")
+ set(optCFLAGS "${optCFLAGS} -flto ")
+ endif()
+ endif()
+ endif()
+else()
+ set(optCFLAGS "-O0 ")
+endif()