diff options
| -rw-r--r-- | CMakeLists.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index b59bdf71..f02dc89a 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -364,6 +364,10 @@ if(CMAKE_SIZEOF_VOID_P MATCHES "4" AND (SSE2_SWITCH OR MSVC)) set(C_FLAGS ${C_FLAGS} ${SSE_FLAGS}) set(FPMATH_SET 2) endif() + # SSE depends on a 16-byte aligned stack, and by default, GCC + # assumes the stack is suitably aligned. Older Linux code or other + # OSs don't guarantee this on 32-bit, so externally-callable + # functions need to ensure an aligned stack. set(EXPORT_DECL "${EXPORT_DECL} __attribute__((force_align_arg_pointer))") elseif(MSVC) check_c_compiler_flag("/arch:SSE2" HAVE_ARCH_SSE2) |