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wayland-egl: enhance the symbol test

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The current test had a few fall-outs:
 - it was checking only for T (.text) symbols
 - did not consider symbol removal

Fix that by fetching all the symbols and doing a bidirectional check -
for added and removed symbols. Error out with informative message for
each case.

v2: Rebase on top of $NM patch.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
This commit is contained in:
Emil Velikov 2018-03-15 14:30:28 +00:00 • committed by Pekka Paalanen
parent 2ba70f1f6d
commit 21b1f22eb0
1 changed files with 28 additions and 8 deletions
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36
egl/wayland-egl-symbols-check
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@ -8,17 +8,37 @@ if [ ! -f "$LIB" ]; then
exit 1
fi
FUNCS=$($NM -D --defined-only $LIB | grep -o "T .*" | cut -c 3- | while read func; do
( grep -q "^$func$" || echo $func ) <<EOF
wl_egl_window_resize
AVAIL_FUNCS="$($NM -D --format=bsd --defined-only $LIB | awk '{print $3}')"
# Platform specific symbols.
PLAT_FUNCS="__bss_start
_edata
_end
_fini
_init
"
# Official ABI, taken from the header.
REQ_FUNCS="wl_egl_window_resize
wl_egl_window_create
wl_egl_window_destroy
wl_egl_window_get_attached_size
_fini
_init
EOF
"
NEW_ABI=$(echo "$AVAIL_FUNCS" | while read func; do
echo "$REQ_FUNCS" | grep -q "^$func$" && continue
echo "$PLAT_FUNCS" | grep -q "^$func$" && continue
echo $func
done)
test ! -n "$FUNCS" || echo $FUNCS
test ! -n "$FUNCS"
test ! -n "$NEW_ABI" || echo "New ABI detected - If intentional, update the test."; echo "$NEW_ABI"
REMOVED_ABI=$(echo "$REQ_FUNCS" | while read func; do
echo "$AVAIL_FUNCS" | grep -q "^$func$" && continue
echo $func
done)
test ! -n "$REMOVED_ABI" || echo "ABI break detected - Required symbol(s) no longer exported!"; echo "$REMOVED_ABI"
test ! -n "$NEW_ABI" || test ! -n "$REMOVED_ABI"