Latest versions of GCC BPF use C23 standard by default. This causes compilation errors in vmlinux.h due to bool types declarations. Pass -std=gnu17 when building selftests BPF objects with GCC. For more details see the discussion at [1]. [1] https://lore.kernel.org/bpf/EYcXjcKDCJY7Yb0GGtAAb7nLKPEvrgWdvWpuNzXm2qi6rYMZDixKv5KwfVVMBq17V55xyC-A1wIjrqG3aw-Imqudo9q9X7D7nLU2gWgbN0w=@pm.me/ CC: Jose E. Marchesi <jose.marchesi@xxxxxxxxxx> Signed-off-by: Ihor Solodrai <ihor.solodrai@xxxxx> --- tools/testing/selftests/bpf/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index d5be2f94deef..d81bb4773cb7 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -479,9 +479,10 @@ define CLANG_CPUV4_BPF_BUILD_RULE $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v4 -o $2 endef # Build BPF object using GCC +GCC_BPF_CFLAGS += -std=gnu17 -DBPF_NO_PRESERVE_ACCESS_INDEX -Wno-attributes define GCC_BPF_BUILD_RULE $(call msg,GCC-BPF,$4,$2) - $(Q)$(BPF_GCC) $3 -DBPF_NO_PRESERVE_ACCESS_INDEX -Wno-attributes -O2 -c $1 -o $2 + $(Q)$(BPF_GCC) $3 -O2 $(GCC_BPF_CFLAGS) -c $1 -o $2 endef SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c -- 2.47.1
