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.
Cc: stable@vger.kernel.org
Signed-off-by: Kun-Chuan Hsieh jetswayss@gmail.com --- tools/bpf/resolve_btfids/main.c | 5 +++++ 1 file changed, 5 insertions(+)
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
On Wed, Feb 24, 2021 at 05:27:52AM +0000, Kun-Chuan Hsieh wrote:
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.
Cc: stable@vger.kernel.org
Signed-off-by: Kun-Chuan Hsieh jetswayss@gmail.com
Acked-by: Jiri Olsa jolsa@redhat.com
thanks, jirka
tools/bpf/resolve_btfids/main.c | 5 +++++ 1 file changed, 5 insertions(+)
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
-- 2.25.1
Hello:
This patch was applied to bpf/bpf.git (refs/heads/master):
On Wed, 24 Feb 2021 05:27:52 +0000 you wrote:
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.
[...]
Here is the summary with links: - [v2] tools/resolve_btfids: Fix build error with older host toolchains https://git.kernel.org/bpf/bpf/c/b8592e231fb8
You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
linux-stable-mirror@lists.linaro.org
-
Jiri Olsa -
Kun-Chuan Hsieh -
patchwork-bot+netdevbpf＠kernel.org