Make checks more OS X friendly

src/check-internal-symbols.sh

@@ -14,15 +14,20 @@ else
 	exit 77
 fi
 
-so=.libs/libharfbuzz.so
-if test -f "$so"; then
+tested=false
+for suffix in so; do
+	so=.libs/libharfbuzz.$suffix
+	if test -f "$so"; then
 		echo "Checking that we are exposing internal symbols"
 		if nm $so | grep ' T ' | grep -v ' T _fini\>\| T _init\>\| T hb_'; then
 			echo "Ouch, internal symbols exposed"
 			stat=1
 		fi
-else
-	echo "check-internal-symbols.sh: libharfbuzz.so not found; skipping test"
+		tested=true
+	fi
+done
+if ! $tested; then
+	echo "check-internal-symbols.sh: libharfbuzz shared library not found; skipping test"
 	exit 77
 fi
 

src/check-libstdc++.sh

@@ -14,15 +14,20 @@ else
 	exit 77
 fi
 
-so=.libs/libharfbuzz.so
-if test -f "$so"; then
+tested=false
+for suffix in so dylib; do
+	so=.libs/libharfbuzz.$suffix
+	if test -f "$so"; then
 		echo "Checking that we are not linking to libstdc++"
 		if ldd $so | grep 'libstdc[+][+]'; then
 			echo "Ouch, linked to libstdc++"
 			stat=1
 		fi
-else
-	echo "check-libstdc++.sh: libharfbuzz.so not found; skipping test"
+		tested=true
+	fi
+done
+if ! $tested; then
+	echo "check-internal-symbols.sh: libharfbuzz shared library not found; skipping test"
 	exit 77
 fi