Fixing some warnings on Linux

gm/gmmain.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /*
  * Code for the "gm" (Golden Master) rendering comparison tool.
  *
@@ skipping 1147 matching lines @@
 
     bool doPDF = true;
     bool doReplay = true;
     bool doPipe = true;
     bool doTiledPipe = false;
     bool doSerialize = true;
     bool doDeferred = true;
     bool doRTree = true;
     bool doTileGrid = true;
     bool doVerbose = false;
+#if SK_SUPPORT_GPU
     bool disableTextureCache = false;
+#endif
     SkTDArray<size_t> configs;
     SkTDArray<size_t> excludeConfigs;
     SkTDArray<SkScalar> tileGridReplayScales;
     *tileGridReplayScales.append() = SK_Scalar1; // By default only test at scale 1.0
     bool userConfig = false;
 
     int moduloRemainder = -1;
     int moduloDivisor = -1;
 
     const char* const commandName = argv[0];
@@ skipping 116 matching lines @@
                    (0 == strcmp(*argv, "-i"))) {
             argv++;
             if (argv < stop && **argv) {
                 resourcePath = *argv;
             }
         } else if (strcmp(*argv, "--serialize") == 0) {
             doSerialize = true;
         } else if (strcmp(*argv, "--noserialize") == 0) {
             doSerialize = false;
         } else if (strcmp(*argv, "--notexturecache") == 0) {
+#if SK_SUPPORT_GPU
             disableTextureCache = true;
+#endif
         } else if (strcmp(*argv, "--tiledPipe") == 0) {
             doTiledPipe = true;
         } else if (!strcmp(*argv, "--verbose") || !strcmp(*argv, "-v")) {
             doVerbose = true;
         } else if ((0 == strcmp(*argv, "--writePath")) ||
             (0 == strcmp(*argv, "-w"))) {
             argv++;
             if (argv < stop && **argv) {
                 writePath = *argv;
             }
@@ skipping 376 matching lines @@
     SkGraphics::Term();
 
     return (0 == testsFailed) ? 0 : -1;
 }
 
 #if !defined(SK_BUILD_FOR_IOS) && !defined(SK_BUILD_FOR_NACL)
 int main(int argc, char * const argv[]) {
     return tool_main(argc, (char**) argv);
 }
 #endif