Build Skia for a bare-bones embedded Linux system.

gyp/common_variables.gypi

Index: gyp/common_variables.gypi
diff --git a/gyp/common_variables.gypi b/gyp/common_variables.gypi
index c3ec7d8ce6a9efb65d8490d2ed73d9d2e089f4e9..6d101ed64c73932c43d99c6ca5b4a5cd44ec61ea 100644
--- a/gyp/common_variables.gypi
+++ b/gyp/common_variables.gypi
@@ -91,8 +91,42 @@
           'arm_version%': 0,
           'arm_neon%': 0,
         }],
+        [ 'skia_os in ["android", "nacl"] and not skia_android_framework',
+          # skia_freetype_static - on OS variants that normally would
+          #     dynamically link the system FreeType library, don't do
+          #     that; instead statically link to the version in
+          #     third_party/freetype and third_party/externals/freetype.
+          {
+            'skia_freetype_static%': '1',
+          }, {
+            'skia_freetype_static%': '0',
+          }
+        ],
       ],
 
+      # skia_giflib_static - on OS variants that normally would link giflib
+      #     with '-lgif' and include the headers from '/usr/include/gif_lib.h',
+      #     don't do that; instead compile and staticlly link the version of
+      #     giflib in third_party/externals/giflib.
+      'skia_giflib_static%': '0',
+
+      # skia_libpng_static - on OS variants that normally would link libpng
+      #     with '-lpng' and include the headers from '/usr/include/png.h',
+      #     don't do that; instead compile and staticlly link the version of
+      #     libpng in third_party/externals/libpng.
+      'skia_libpng_static%': '0',
+
+      # skia_zlib_static - on OS variants that normally would link zlib with
+      #     '-lz' or libz.dylib and include the headers from '<zlib.h>',
+      #     don't do that; instead compile and staticlly link the version of
+      #     zlib in third_party/externals/zlib.
+      'skia_zlib_static%': '0',
+
+      # skia_no_fontconfig - On POSIX systems that would normally use the
+      #     SkFontHost_fontconfig interface; use the SkFontHost_linux
+      #     version instead.
+      'skia_no_fontconfig%': '0',
+
       'skia_sanitizer%': '',
       'skia_scalar%': 'float',
       'skia_mesa%': 0,
@@ -151,6 +185,12 @@
     'arm_neon_optional%': 0,
     'skia_os%': '<(skia_os)',
     'os_posix%': '<(os_posix)',
+
+    'skia_freetype_static%': '<(skia_freetype_static)',
+    'skia_giflib_static%': '<(skia_giflib_static)',
+    'skia_libpng_static%': '<(skia_libpng_static)',
+    'skia_zlib_static%': '<(skia_zlib_static)',
+    'skia_no_fontconfig%': '<(skia_no_fontconfig)',
     'skia_sanitizer%': '<(skia_sanitizer)',
     'skia_scalar%': '<(skia_scalar)',
     'skia_mesa%': '<(skia_mesa)',