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-rwxr-xr-xconfigure13
1 files changed, 11 insertions, 2 deletions
diff --git a/configure b/configure
index 9974bc1f55..f2aa2f5262 100755
--- a/configure
+++ b/configure
@@ -6525,8 +6525,17 @@ elif enabled gcc; then
elif enabled llvm_gcc; then
check_cflags -mllvm -stack-alignment=16
elif enabled clang; then
- check_cflags -mllvm -stack-alignment=16
- check_cflags -mstack-alignment=16
+ if [ "$target_os" = "mingw32" -o "$target_os" = "win32" ] && enabled x86_32; then
+ # Clang doesn't support maintaining alignment without assuming the
+ # same alignment in every function. If 16 byte alignment would be
+ # enabled, one would also have to either add attribute_align_arg on
+ # every single entry point into the libraries or enable -mstackrealign
+ # (doing stack realignment in every single function).
+ disable aligned_stack
+ else
+ check_cflags -mllvm -stack-alignment=16
+ check_cflags -mstack-alignment=16
+ fi
check_cflags -Qunused-arguments
check_cflags -Werror=implicit-function-declaration
check_cflags -Werror=missing-prototypes