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-rwxr-xr-xscripts/trylink14
1 files changed, 9 insertions, 5 deletions
diff --git a/scripts/trylink b/scripts/trylink
index c24d49d52..adc045ad8 100755
--- a/scripts/trylink
+++ b/scripts/trylink
@@ -126,11 +126,12 @@ try $CC $CFLAGS $LDFLAGS \
while test "$LDLIBS"; do
$debug && echo "Trying libraries: $LDLIBS"
all_needed=true
+ last_needed=false
for one in $LDLIBS; do
without_one=`echo " $LDLIBS " | sed "s/ $one / /g" | xargs`
# "lib1 lib2 lib3" -> "-llib1 -llib2 -llib3"
l_list=`echo "$without_one" | sed -e 's/ / -l/g' -e 's/^/-l/' -e 's/^-l$//'`
- test "x$l_list" != "x" && l_list="-Wl,--start-group $l_list -Wl,--end-group"
+ test x"$l_list" != x"" && l_list="-Wl,--start-group $l_list -Wl,--end-group"
$debug && echo "Trying -l options: '$l_list'"
try $CC $CFLAGS $LDFLAGS \
-o $EXE \
@@ -143,16 +144,19 @@ while test "$LDLIBS"; do
echo " Library $one is not needed"
LDLIBS="$without_one"
all_needed=false
+ last_needed=false
else
echo " Library $one is needed"
+ last_needed=true
fi
done
# All libs were needed, can't remove any
$all_needed && break
- # If there is no space char, the list has just one lib.
- # I'm not sure that in this case lib really is 100% needed.
- # Let's try linking without it anyway... thus commented out.
- #{ echo "$LDLIBS" | grep -q ' '; } || break
+ # Optimization: was the last tried lib needed?
+ if $last_needed; then
+ # Was it the only one lib left? Don't test again then.
+ { echo "$LDLIBS" | grep -q ' '; } || break
+ fi
done
# Make the binary with final, minimal list of libs