[PATCH bpf-next] libbpf: Fix build errors.

[PATCH bpf-next] libbpf: Fix build errors.

[David Miller]

These elf object pieces are of type Elf64_Xword and therefore could be
"long long" on some builds.

Cast to "long long" and use printf format %lld to deal with this since
we are building with -Werror=format.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 5b83875..e9c4b7c 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -910,8 +910,9 @@ bpf_program__collect_reloc(struct bpf_program *prog, GElf_Shdr *shdr,
 				   GELF_R_SYM(rel.r_info));
 			return -LIBBPF_ERRNO__FORMAT;
 		}
-		pr_debug("relo for %ld value %ld name %d\n",
-			 rel.r_info >> 32, sym.st_value, sym.st_name);
+		pr_debug("relo for %lld value %lld name %d\n",
+			 (long long) (rel.r_info >> 32),
+			 (long long) sym.st_value, sym.st_name);
 
 		if (sym.st_shndx != maps_shndx && sym.st_shndx != text_shndx) {
 			pr_warning("Program '%s' contains non-map related relo data pointing to section %u\n",

Re: [PATCH bpf-next] libbpf: Fix build errors.

[Daniel Borkmann]

On 12/19/2017 09:53 PM, David Miller wrote:
> 
> These elf object pieces are of type Elf64_Xword and therefore could be
> "long long" on some builds.
> 
> Cast to "long long" and use printf format %lld to deal with this since
> we are building with -Werror=format.
> 
> Signed-off-by: David S. Miller <davem@davemloft.net>

Applied to bpf-next, thanks David!