Build Skia for a bare-bones embedded Linux system.

gyp/freetype.gyp

Index: gyp/freetype.gyp
diff --git a/gyp/freetype.gyp b/gyp/freetype.gyp
index 6717c78f65ca01c8e066357771c11b8199cd6e9b..9e4b94f466e075a148711413915a4f4e2c854c25 100644
--- a/gyp/freetype.gyp
+++ b/gyp/freetype.gyp
@@ -5,39 +5,41 @@
       'target_name': 'freetype',
       'type': 'none',
       'conditions': [
-        [ 'skia_os in ["linux", "freebsd", "openbsd", "solaris", "chromeos"]', {
-          'direct_dependent_settings': {
-            'include_dirs' : [
-              '/usr/include/freetype2',
+        [ 'skia_freetype_static',
+          {
+            'dependencies': [
+              'freetype_static'
             ],
-            'link_settings': {
-              'libraries': [
-                '-lfreetype',
-              ],
+            'export_dependent_settings': [
+              'freetype_static'
+            ],
+            'direct_dependent_settings': {
               'defines': [
-                #The font host requires at least FreeType 2.3.0 at runtime.
-                'SK_FONTHOST_FREETYPE_RUNTIME_VERSION=0x020300',\
-                'SK_CAN_USE_DLOPEN=1',
+                # Both Android and NaCl provide at least FreeType 2.4.0
+                'SK_FONTHOST_FREETYPE_RUNTIME_VERSION=0x020400',

[scroggo, 2014/02/19 18:33:57]

If I understand Eric's comment in
https://codereview.chromium.org/152513007/diff/740001/gyp/freetype.gyp#newcode8,
these should perhaps depend on the OS, not on skia_freetype_static. I could
imagine a situation where we added a new OS which links freetype statically, and
got the side effect of setting the freetype runtime version to 2.4 and
preventing Skia from using dlopen.

[borenet, 2014/02/21 15:24:34]

Yes, everything in this block only makes sense on the OS which were listed
before.  I think we should keep these under the original conditional.

[hal.canary, 2014/02/24 17:42:35]

I think I've got it right now.

+                'SK_CAN_USE_DLOPEN=0',
               ],
-            }
-          },
-        }],
-        [ 'skia_os in ["android", "nacl"]', {
-          'dependencies': [
-            'freetype_static'
-          ],
-          'export_dependent_settings': [
-            'freetype_static'
-          ],
-          'direct_dependent_settings': {
-            'defines': [
-              # Both Android and NaCl provide at least FreeType 2.4.0
-              'SK_FONTHOST_FREETYPE_RUNTIME_VERSION=0x020400',
-              'SK_CAN_USE_DLOPEN=0',
-            ],
-          },
-        }],
-        [ 'skia_android_framework', {
+            },
+          }, { # (not skia_freetype_static)
+            'direct_dependent_settings': {
+              'include_dirs' : [
+                '/usr/include/freetype2',
+              ],
+              'link_settings': {
+                'libraries': [
+                  '-lfreetype',
+                ],
+                'defines': [
+                  #The font host requires at least FreeType 2.3.0 at runtime.
+                  'SK_FONTHOST_FREETYPE_RUNTIME_VERSION=0x020300',
+                  'SK_CAN_USE_DLOPEN=1',
+                ],
+              }
+            },
+          }
+        ],
+        [ 'skia_android_framework',
+          {
             'include_dirs': [
               'external/expat/lib',
               'external/freetype/include',
@@ -61,7 +63,7 @@
       'standalone_static_library': 1,
       'dependencies': [
         # we are dependent upon PNG for color emoji glyphs
-        'images.gyp:images'
+        'libpng.gyp:libpng',
       ],
       'includes': [
         # common freetype sources needed for both the base Skia build and the