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buildtools: fix build with coverage

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A compiler can reuse a variable name and prefix it when instrumenting
with coverage.

Example:
$ make defconfig T=x86_64-native-linux-gcc O=master
$ make EXTRA_CFLAGS='--coverage' O=master
[...]
    CC rte_flow.o
 rte_flow_dynf_metadata_offs is not flagged as experimental but is listed
 in version map
 Please add __rte_experimental to the definition of
 rte_flow_dynf_metadata_offs

$ objdump -t master/build/lib/librte_ethdev/rte_flow.o |grep _offs$
0000000000000000 l     F .text.startup	000000000000000a
  _GLOBAL__sub_I_65535_0_rte_flow_dynf_metadata_offs
0000000000000620 g     O .data	0000000000000004
  rte_flow_dynf_metadata_offs

Protect against this by adding a space character in the pattern.

Fixes: a4bcd61de82d ("buildtools: add script to check experimental API exports")
Cc: stable@dpdk.org

Reported-by: Andrew Rybchenko <arybchenko@solarflare.com>
Signed-off-by: David Marchand <david.marchand@redhat.com>
Tested-by: Andrew Rybchenko <arybchenko@solarflare.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
This commit is contained in:
David Marchand 2019-11-25 09:10:07 +01:00
parent 72e75e1f1b
commit 24252a60ad
1 changed files with 2 additions and 2 deletions
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4
buildtools/check-experimental-syms.sh
View File

@ -25,8 +25,8 @@ objdump -t $OBJFILE >$DUMPFILE
ret=0
for SYM in `$LIST_SYMBOL -S EXPERIMENTAL $MAPFILE |cut -d ' ' -f 3`
do
if grep -q "\.text.*$SYM$" $DUMPFILE &&
! grep -q "\.text\.experimental.*$SYM$" $DUMPFILE
if grep -q "\.text.*[[:space:]]$SYM$" $DUMPFILE &&
! grep -q "\.text\.experimental.*[[:space:]]$SYM$" $DUMPFILE
then
cat >&2 <<- END_OF_MESSAGE
$SYM is not flagged as experimental