The following commit has been merged into the x86/sgx branch of tip: Commit-ID: 304b259e63b94c4f825e0648b33b15f8962955c7 Gitweb: https://git.kernel.org/tip/304b259e63b94c4f825e0648b33b15f8962955c7 Author: Jo Van Bulck <jo.vanbulck@xxxxxxxxxxxxxx> AuthorDate: Thu, 05 Oct 2023 17:38:46 +02:00 Committer: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> CommitterDate: Fri, 08 Dec 2023 10:05:27 -08:00 selftests/sgx: Specify freestanding environment for enclave compilation Use -ffreestanding to assert the enclave compilation targets a freestanding environment (i.e., without "main" or standard libraries). This fixes clang reporting "undefined reference to `memset'" after erroneously optimizing away the provided memset/memcpy implementations. Still need to instruct the linker from using standard system startup functions, but drop -nostartfiles as it is implied by -nostdlib. Signed-off-by: Jo Van Bulck <jo.vanbulck@xxxxxxxxxxxxxx> Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> Reviewed-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx> Acked-by: Kai Huang <kai.huang@xxxxxxxxx> Link: https://lore.kernel.org/all/20231005153854.25566-6-jo.vanbulck%40cs.kuleuven.be --- tools/testing/selftests/sgx/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/sgx/Makefile b/tools/testing/selftests/sgx/Makefile index dcdd04b..7eb890b 100644 --- a/tools/testing/selftests/sgx/Makefile +++ b/tools/testing/selftests/sgx/Makefile @@ -14,7 +14,7 @@ endif INCLUDES := -I$(top_srcdir)/tools/include HOST_CFLAGS := -Wall -Werror -g $(INCLUDES) -fPIC HOST_LDFLAGS := -z noexecstack -lcrypto -ENCL_CFLAGS += -Wall -Werror -static -nostdlib -nostartfiles -fPIC \ +ENCL_CFLAGS += -Wall -Werror -static -nostdlib -ffreestanding -fPIC \ -fno-stack-protector -mrdrnd $(INCLUDES) ENCL_LDFLAGS := -Wl,-T,test_encl.lds,--build-id=none
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