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authorKun-Chuan Hsieh <jetswayss@gmail.com>2021-02-24 08:27:52 +0300
committerDaniel Borkmann <daniel@iogearbox.net>2021-02-24 19:19:11 +0300
commit41462c6e730ca0e63f5fed5a517052385d980c54 (patch)
tree330797c85c66dd3ffba4ffb3e24b08ee123f3639 /tools/bpf
parentc41d81bfbb4579c3e583457e383dd63d026bf947 (diff)
downloadlinux-41462c6e730ca0e63f5fed5a517052385d980c54.tar.xz
tools/resolve_btfids: Fix build error with older host toolchains
Older libelf.h and glibc elf.h might not yet define the ELF compression types. Checking and defining SHF_COMPRESSED fix the build error when compiling with older toolchains. Also, the tool resolve_btfids is compiled with host toolchain. The host toolchain is more likely to be older than the cross compile toolchain. Fixes: 51f6463aacfb ("tools/resolve_btfids: Fix sections with wrong alignment") Signed-off-by: Kun-Chuan Hsieh <jetswayss@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Jiri Olsa <jolsa@redhat.com> Link: https://lore.kernel.org/bpf/20210224052752.5284-1-jetswayss@gmail.com
Diffstat (limited to 'tools/bpf')
-rw-r--r--tools/bpf/resolve_btfids/main.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/bpf/resolve_btfids/main.c b/tools/bpf/resolve_btfids/main.c
index 7409d7860aa6..80d966cfcaa1 100644
--- a/tools/bpf/resolve_btfids/main.c
+++ b/tools/bpf/resolve_btfids/main.c
@@ -260,6 +260,11 @@ static struct btf_id *add_symbol(struct rb_root *root, char *name, size_t size)
return btf_id__add(root, id, false);
}
+/* Older libelf.h and glibc elf.h might not yet define the ELF compression types. */
+#ifndef SHF_COMPRESSED
+#define SHF_COMPRESSED (1 << 11) /* Section with compressed data. */
+#endif
+
/*
* The data of compressed section should be aligned to 4
* (for 32bit) or 8 (for 64 bit) bytes. The binutils ld