check_symbol_exists(ceilf math.h HAVE_CEILF)
check_symbol_exists(floorf math.h HAVE_FLOORF)
check_symbol_exists(fmodf math.h HAVE_FMODF)
+check_symbol_exists(log math.h HAVE_LOG)
+check_symbol_exists(log2 math.h HAVE_LOG2)
+check_symbol_exists(log10 math.h HAVE_LOG10)
+check_symbol_exists(exp math.h HAVE_EXP)
+check_symbol_exists(exp2 math.h HAVE_EXP2)
+check_symbol_exists(exp10 math.h HAVE_EXP10)
if( HAVE_SETJMP_H )
check_symbol_exists(longjmp setjmp.h HAVE_LONGJMP)
check_symbol_exists(setjmp setjmp.h HAVE_SETJMP)
check_cxx_compiler_flag("-Wno-variadic-macros" SUPPORTS_NO_VARIADIC_MACROS_FLAG)
+set(USE_NO_MAYBE_UNINITIALIZED 0)
+set(USE_NO_UNINITIALIZED 0)
+
+# Disable gcc's potentially uninitialized use analysis as it presents lots of
+# false positives.
+if (CMAKE_COMPILER_IS_GNUCXX)
+ check_cxx_compiler_flag("-Wmaybe-uninitialized" HAS_MAYBE_UNINITIALIZED)
+ if (HAS_MAYBE_UNINITIALIZED)
+ set(USE_NO_MAYBE_UNINITIALIZED 1)
+ else()
+ # Only recent versions of gcc make the distinction between -Wuninitialized
+ # and -Wmaybe-uninitialized. If -Wmaybe-uninitialized isn't supported, just
+ # turn off all uninitialized use warnings.
+ check_cxx_compiler_flag("-Wuninitialized" HAS_UNINITIALIZED)
+ set(USE_NO_UNINITIALIZED ${HAS_UNINITIALIZED})
+ endif()
+endif()
+
include(GetHostTriple)
get_host_triple(LLVM_HOST_TRIPLE)