message about libintl.h on Mac

CMakeLists.txt

@@ -35,8 +35,7 @@ else()
           if(GETTEXT_INCLUDE_PATH)
             include_directories(${GETTEXT_INCLUDE_PATH})
           else()
-            # disable i18n if there is no gettext
-            set(NO_GETTEXT "YesPlease")
+            message("Cannot found libintl.h, if you see errors about libintl.h, add the path to gettext header files into your include paths")
           endif()
         endif()
     else()

README.md

@@ -55,8 +55,9 @@ Special thanks to Arthur Titeica for the [AUR Package](https://aur.archlinux.org
 #### Dependency
 
 * CMake, pkg-config
-* compilers support C++11
+* compilers support C++11, for example
  * GCC >= 4.4.6
+ * I heard about successful build with Clang 
 * libpoppler with xpdf header >= 0.20.0 (compile with --enable-xpdf-headers)
  * Install libpng (and headers) BEFORE you compile libpoppler if you want background images generated
  * Install poppler-data if your want CJK support

src/include/HTMLRenderer.h

@@ -79,7 +79,7 @@ class HTMLRenderer : public OutputDev
         virtual GBool interpretType3Chars() { return gFalse; }
 
         // Does this device need non-text content?
-        virtual GBool needNonText() { return gFalse; }
+        virtual GBool needNonText() { return gTrue; }
 
         virtual void setDefaultCTM(double *ctm);