From: Andre Przywara Date: Fri, 19 Mar 2021 16:53:31 +0000 (+0000) Subject: kselftest/arm64: mte: Output warning about failing compiler X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=8bbb58a3c6b9f12b2217b8ae08e70a6d2f556f73;p=linux.git kselftest/arm64: mte: Output warning about failing compiler At the moment we check the compiler's ability to compile MTE enabled code, but guard all the Makefile rules by it. As a consequence a broken or not capable compiler just doesn't do anything, and make happily returns without any error message, but with no programs created. Since the MTE feature is only supported by recent aarch64 compilers (not all stable distro compilers support it), having an explicit message seems like a good idea. To not break building multiple targets, we let make proceed without errors. Signed-off-by: Andre Przywara Reviewed-by: Mark Brown Link: https://lore.kernel.org/r/20210319165334.29213-9-andre.przywara@arm.com Signed-off-by: Catalin Marinas --- diff --git a/tools/testing/selftests/arm64/mte/Makefile b/tools/testing/selftests/arm64/mte/Makefile index fa282e5f20695..e0d43cea3cd18 100644 --- a/tools/testing/selftests/arm64/mte/Makefile +++ b/tools/testing/selftests/arm64/mte/Makefile @@ -23,6 +23,9 @@ TEST_GEN_PROGS := $(PROGS) # Get Kernel headers installed and use them. KSFT_KHDR_INSTALL := 1 +else + $(warning compiler "$(CC)" does not support the ARMv8.5 MTE extension.) + $(warning test program "mte" will not be created.) endif # Include KSFT lib.mk.