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| author | Viktor Malik <vmalik@redhat.com> | 2023-05-30 14:33:52 +0200 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2023-06-06 00:44:47 +0200 |
| commit | edd75c802855271c8610f58a2fc9e54aefc49ce5 (patch) | |
| tree | 2b86e3f292f7d415dbed8f2baa0f912fa0606a50 | |
| parent | selftests/bpf: Add test for non-NULLable PTR_TO_BTF_IDs (diff) | |
| download | linux-edd75c802855271c8610f58a2fc9e54aefc49ce5.tar.xz linux-edd75c802855271c8610f58a2fc9e54aefc49ce5.zip | |
tools/resolve_btfids: Fix setting HOSTCFLAGS
Building BPF selftests with custom HOSTCFLAGS yields an error:
# make HOSTCFLAGS="-O2"
[...]
HOSTCC ./tools/testing/selftests/bpf/tools/build/resolve_btfids/main.o
main.c:73:10: fatal error: linux/rbtree.h: No such file or directory
73 | #include <linux/rbtree.h>
| ^~~~~~~~~~~~~~~~
The reason is that tools/bpf/resolve_btfids/Makefile passes header
include paths by extending HOSTCFLAGS which is overridden by setting
HOSTCFLAGS in the make command (because of Makefile rules [1]).
This patch fixes the above problem by passing the include paths via
`HOSTCFLAGS_resolve_btfids` which is used by tools/build/Build.include
and can be combined with overridding HOSTCFLAGS.
[1] https://www.gnu.org/software/make/manual/html_node/Overriding.html
Fixes: 56a2df7615fa ("tools/resolve_btfids: Compile resolve_btfids as host program")
Signed-off-by: Viktor Malik <vmalik@redhat.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20230530123352.1308488-1-vmalik@redhat.com
| -rw-r--r-- | tools/bpf/resolve_btfids/Makefile | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/bpf/resolve_btfids/Makefile b/tools/bpf/resolve_btfids/Makefile index ac548a7baa73..4b8079f294f6 100644 --- a/tools/bpf/resolve_btfids/Makefile +++ b/tools/bpf/resolve_btfids/Makefile @@ -67,7 +67,7 @@ $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(LIBBPF_OU LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null) LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf) -HOSTCFLAGS += -g \ +HOSTCFLAGS_resolve_btfids += -g \ -I$(srctree)/tools/include \ -I$(srctree)/tools/include/uapi \ -I$(LIBBPF_INCLUDE) \ @@ -76,7 +76,7 @@ HOSTCFLAGS += -g \ LIBS = $(LIBELF_LIBS) -lz -export srctree OUTPUT HOSTCFLAGS Q HOSTCC HOSTLD HOSTAR +export srctree OUTPUT HOSTCFLAGS_resolve_btfids Q HOSTCC HOSTLD HOSTAR include $(srctree)/tools/build/Makefile.include $(BINARY_IN): fixdep FORCE prepare | $(OUTPUT) |