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[bpf-next,v2,5/5] tools: libbpf: make sure readelf shows full names in build checks

Message ID 20190228030414.18973-6-jakub.kicinski@netronome.com
State Accepted
Delegated to: BPF Maintainers
Headers show
Series samples: bpf: continue effort to get rid of bpf_load | expand

Commit Message

Jakub Kicinski Feb. 28, 2019, 3:04 a.m. UTC 
readelf truncates its output by default to attempt to make it more
readable.  This can lead to function names getting aliased if they
differ late in the string.  Use --wide parameter to avoid
truncation.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
---
 tools/lib/bpf/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile
index 761691bd72ad..a05c43468bd0 100644
--- a/tools/lib/bpf/Makefile
+++ b/tools/lib/bpf/Makefile
@@ -132,9 +132,9 @@  BPF_IN    := $(OUTPUT)libbpf-in.o
 LIB_FILE := $(addprefix $(OUTPUT),$(LIB_FILE))
 VERSION_SCRIPT := libbpf.map
 
-GLOBAL_SYM_COUNT = $(shell readelf -s $(BPF_IN) | \
+GLOBAL_SYM_COUNT = $(shell readelf -s --wide $(BPF_IN) | \
 			   awk '/GLOBAL/ && /DEFAULT/ && !/UND/ {s++} END{print s}')
-VERSIONED_SYM_COUNT = $(shell readelf -s $(OUTPUT)libbpf.so | \
+VERSIONED_SYM_COUNT = $(shell readelf -s --wide $(OUTPUT)libbpf.so | \
 			      grep -Eo '[^ ]+@LIBBPF_' | cut -d@ -f1 | sort -u | wc -l)
 
 CMD_TARGETS = $(LIB_FILE)