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tools: libbpf: make sure readelf shows full names in build checks

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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 <[email protected]>
Reviewed-by: Quentin Monnet <[email protected]>
Acked-by: Andrii Nakryiko <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
This commit is contained in:
Jakub Kicinski 2019-02-27 19:04:14 -08:00 • committed by Daniel Borkmann
commit 771744f9dc
1 changed files with 2 additions and 2 deletions
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4
tools/lib/bpf/Makefile
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@ -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)