[linux] Added WebP build deps

configure

@@ -105,6 +105,7 @@ print_flags variant static_libs cflags ldflags
 print_flags rapidjson static_libs cflags ldflags
 print_flags gtest static_libs cflags ldflags
 print_flags pixelmatch static_libs cflags ldflags
+print_flags webp static_libs cflags ldflags
 
 CONFIG+="  }
 }

gyp/platform-linux.gypi

@@ -35,6 +35,7 @@
           '<@(nunicode_cflags)',
           '<@(boost_cflags)',
           '<@(sqlite_cflags)',
+          '<@(webp_cflags)',
         ],
         'ldflags': [
           '<@(libpng_ldflags)',
@@ -43,6 +44,7 @@
           '<@(nunicode_ldflags)',
           '<@(sqlite_ldflags)',
           '<@(zlib_ldflags)',
+          '<@(webp_ldflags)',
         ],
         'libraries': [
           '<@(libpng_static_libs)',
@@ -51,6 +53,7 @@
           '<@(nunicode_static_libs)',
           '<@(sqlite_static_libs)',
           '<@(zlib_static_libs)',
+          '<@(webp_static_libs)',
         ],
       },
 

platform/linux/scripts/configure.sh

@@ -15,6 +15,7 @@ VARIANT_VERSION=1.0
 RAPIDJSON_VERSION=1.0.2
 GTEST_VERSION=1.7.0
 PIXELMATCH_VERSION=0.9.0
+WEBP_VERSION=0.5.0
 
 function print_opengl_flags {
     CONFIG+="    'opengl_cflags%': $(quote_flags $(pkg-config gl x11 --cflags)),"$LN