Maybe having the check last would be cleaner.
diff --git a/BaseTools/Source/C/DevicePath/GNUmakefile
b/BaseTools/Source/C/DevicePath/GNUmakefile
index c217674345b1..17f213879e82 100644
--- a/BaseTools/Source/C/DevicePath/GNUmakefile
+++ b/BaseTools/Source/C/DevicePath/GNUmakefile
@@ -16,10 +16,12 @@ include $(MAKEROOT)/Makefiles/app.makefile
GCCVERSION = $(shell gcc -dumpversion | awk -F'.' '{print $$1}')
ifneq ("$(GCCVERSION)", "5")
ifneq ($(CXX), llvm)
+ifneq ($(DARWIN),Darwin)
# gcc 12 trips over device path handling
BUILD_CFLAGS += -Wno-error=stringop-overflow
endif
endif
+endif
LIBS = -lCommon
ifeq ($(CYGWIN), CYGWIN)
Thanks,
Andrew Fish
> On Aug 25, 2022, at 10:45 AM, Andrew Fish via groups.io
> <afish=apple....@groups.io> wrote:
>
> Rebecca,
>
> FYI /usr/bin/gcc has been a redirector into clang for a lot of years.
>
> The build picks different default sets of complier flags based on build type.
> There is already code that assumes gcc == clang here [1]
>
> I think the issue is the check that is wrapping "BUILD_CFLAGS +=
> -Wno-error=stringop-overflow”. It needs to skip the check on macOS.
>
> diff --git a/BaseTools/Source/C/DevicePath/GNUmakefile
> b/BaseTools/Source/C/DevicePath/GNUmakefile
> index c217674345b1..f3c9739617f2 100644
> --- a/BaseTools/Source/C/DevicePath/GNUmakefile
> +++ b/BaseTools/Source/C/DevicePath/GNUmakefile
> @@ -14,12 +14,14 @@ OBJECTS = DevicePath.o UefiDevicePathLib.o
> DevicePathFromText.o DevicePathUtili
> include $(MAKEROOT)/Makefiles/app.makefile
>
> GCCVERSION = $(shell gcc -dumpversion | awk -F'.' '{print $$1}')
> +ifneq ($(DARWIN),Darwin)
> ifneq ("$(GCCVERSION)", "5")
> ifneq ($(CXX), llvm)
> # gcc 12 trips over device path handling
> BUILD_CFLAGS += -Wno-error=stringop-overflow
> endif
> endif
> +endif
>
> LIBS = -lCommon
> ifeq ($(CYGWIN), CYGWIN)
>
>
> [1]
> https://github.com/tianocore/edk2/blob/master/BaseTools/Source/C/Makefiles/header.makefile#L83
>
> Thanks,
>
> Andrew Fish
>
>> On Aug 25, 2022, at 9:20 AM, Rebecca Cran <rebe...@bsdio.com> wrote:
>>
>> BaseTools no longer builds on macOS (12.5.1, Monterey), because 'gcc' in
>> /usr/bin is really clang.
>>
>> I tried installing gcc 12 from Homebrew, but the build then failed saying it
>> couldn't find _stdio.h.
>>
>> It appears the breakage might have been introduced in this commit back in
>> March:
>>
>> commit 22130dcd98b4d4b76ac8d922adb4a2dbc86fa52c
>> Author: Gerd Hoffmann <kra...@redhat.com>
>> Date: Thu Mar 24 20:04:36 2022 +0800
>>
>> Basetools: turn off gcc12 warning
>>
>> Running "make -C BaseTools" produces the following error:
>>
>>
>> /Library/Developer/CommandLineTools/usr/bin/make -C DevicePath
>> gcc -c -I .. -I ../Include/Common -I ../Include/ -I
>> ../Include/IndustryStandard -I ../Common/ -I .. -I . -I ../Include/X64/ -MD
>> -fshort-wchar -fno-strict-aliasing -Wall -Werror
>> -Wno-deprecated-declarations -Wno-self-assign -Wno-unused-result -nostdlib
>> -g -O2 -Wno-error=stringop-overflow DevicePath.c -o DevicePath.o
>> error: unknown warning option '-Werror=stringop-overflow'; did you mean
>> '-Werror=shift-overflow'? [-Werror,-Wunknown-warning-option]
>> make[2]: *** [DevicePath.o] Error 1
>> make[1]: *** [DevicePath] Error 2
>> make: *** [Source/C] Error 2
>>
>>
>> bcran@procan edk2 % gcc -v
>> Configured with: --prefix=/Library/Developer/CommandLineTools/usr
>> --with-gxx-include-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
>> Apple clang version 12.0.5 (clang-1205.0.22.9)
>> Target: x86_64-apple-darwin21.6.0
>> Thread model: posix
>> InstalledDir: /Library/Developer/CommandLineTools/usr/bin
>>
>> bcran@procan edk2 % uname -a
>> Darwin procan.int.bsdio.com 21.6.0 Darwin Kernel Version 21.6.0: Wed Aug 10
>> 14:25:27 PDT 2022; root:xnu-8020.141.5~2/RELEASE_X86_64 x86_64
>>
>> --
>> Rebecca Cran
>>
>
>
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