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

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Message-Id: <20171219.155311.134149966959114257.davem@davemloft.net>
Date:   Tue, 19 Dec 2017 15:53:11 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     daniel@...earbox.net
CC:     netdev@...r.kernel.org
Subject: [PATCH bpf-next] libbpf: Fix build errors.

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@...emloft.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",