Build improvements

src/init.cc

@@ -51,9 +51,16 @@ init (Handle<Object> target) {
   }
   target->Set(String::New("jpegVersion"), String::New(jpeg_version));
 #endif
+
 #ifdef HAVE_GIF
+#ifndef GIF_LIB_VERSION
+  char gif_version[10];
+  snprintf(gif_version, 10, "%d.%d.%d", GIFLIB_MAJOR, GIFLIB_MINOR, GIFLIB_RELEASE);
+  target->Set(String::New("gifVersion"), String::New(gif_version));
+#else
   target->Set(String::New("gifVersion"), String::New(GIF_LIB_VERSION));
 #endif
+#endif
 }
 
 NODE_MODULE(canvas,init);

util/has_lib.sh

@@ -1,15 +1,15 @@
 #!/usr/bin/env bash
 has_lib() {
-  local regex="lib$1.+(so|dylib)(?!\.)"
+  local regex="lib$1.+(so|dylib)$"
 
   # Try using ldconfig on linux systems
-  for LINE in `which ldconfig > /dev/null && ldconfig -p 2>/dev/null | grep -P $regex`; do
+  for LINE in `which ldconfig > /dev/null && ldconfig -p 2>/dev/null | grep -E $regex`; do
     return 0
   done
 
   # Try just checking common library locations
   for dir in /lib /usr/lib /usr/local/lib /opt/local/lib; do
-    test -d $dir && ls $dir | grep -P $regex && return 0
+    test -d $dir && ls $dir | grep -E $regex && return 0
   done
 
   return 1