BaseTools/header.makefile: revert gcc-8 "-Wno-xxx" options on OSX
authorLaszlo Ersek <>
Wed, 7 Mar 2018 09:17:28 +0000 (10:17 +0100)
committerLaszlo Ersek <>
Wed, 7 Mar 2018 21:42:55 +0000 (22:42 +0100)
I recently added the gcc-8 specific "-Wno-stringop-truncation" and
"-Wno-restrict" options to BUILD_CFLAGS, both for "Darwin" (XCODE5 /
clang, OSX) and otherwise (gcc, Linux / Cygwin).

I also regression-tested the change with gcc-4.8 on Linux -- gcc-4.8 does
not know either of the (gcc-8 specific) "-Wno-stringop-truncation" and
"-Wno-restrict" options, yet the build completed fine (by GCC design).

Regarding OSX, my expectation was that

- XCODE5 / clang would either recognize these warnings options (because
  clang does recognize most -W options of gcc),

- or, similarly to gcc, clang would simply ignore the "-Wno-xxx" flags
  that it didn't recognize.

Neither is the case; the new flags have broken the BaseTools build on OSX.
Revert them (for OSX only).

Cc: Liming Gao <>
Cc: Yonghong Zhu <>
Reported-by: Liming Gao <>
Fixes: 1d212a83df0eaf32a6f5d4159beb2d77832e0231
Fixes: 9222154ae7b3eef75ae88cdb56158256227cb929
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <>
Reviewed-by: Liming Gao <>
Acked-by: Ard Biesheuvel <>

index 065a998bf5de6569d89d41a53db9e8d341d0cc85..db436773cf40e72fc5fdc9d4049659f3b97adace 100644 (file)
@@ -71,7 +71,7 @@ INCLUDE = $(TOOL_INCLUDE) -I $(MAKEROOT) -I $(MAKEROOT)/Include/Common -I $(MAKE
 ifeq ($(DARWIN),Darwin)\r
 # assume clang or clang compatible flags on OS X\r
-BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-deprecated-declarations -Wno-stringop-truncation -Wno-restrict -Wno-self-assign -Wno-unused-result -nostdlib -c -g\r
+BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-deprecated-declarations -Wno-self-assign -Wno-unused-result -nostdlib -c -g\r
 BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-deprecated-declarations -Wno-stringop-truncation -Wno-restrict -Wno-unused-result -nostdlib -c -g\r