1 files changed, 52 insertions, 0 deletions
diff --git a/opts.gyp b/opts.gyp
new file mode 100644
index 0000000..a93bf44
--- /dev/null
+++ b/opts.gyp
@@ -0,0 +1,52 @@
+{
+  'includes': [
+    'target_defaults.gypi',
+  ],
+  'targets': [
+    # Due to an unfortunate intersection of lameness between gcc and gyp,
+    # we have to build the *_SSE2.cpp files in a separate target.  The
+    # gcc lameness is that, in order to compile SSE2 intrinsics code, it
+    # must be passed the -msse2 flag.  However, with this flag, it may
+    # emit SSE2 instructions even for scalar code, such as the CPUID
+    # test used to test for the presence of SSE2.  So that, and all other
+    # code must be compiled *without* -msse2.  The gyp lameness is that it
+    # does not allow file-specific CFLAGS, so we must create this extra
+    # target for those files to be compiled with -msse2.
+    #
+    # This is actually only a problem on 32-bit Linux (all Intel Macs have
+    # SSE2, Linux x86_64 has SSE2 by definition, and MSC will happily emit
+    # SSE2 from instrinsics, while generating plain ol' 386 for everything
+    # else).  However, to keep the .gyp file simple and avoid platform-specific
+    # build breakage, we do this on all platforms.
+
+    # For about the same reason, we need to compile the ARM opts files
+    # separately as well.
+    {
+      'target_name': 'opts',
+      'type': 'static_library',
+      'include_dirs': [
+        '../include/config',
+        '../include/core',
+        '../src/core',
+      ],
+      'conditions': [
+        [ '(OS == "linux" or OS == "freebsd" or OS == "openbsd")', {
+          'cflags': [
+            '-msse2',
+          ],
+        }],
+      ],
+      'sources': [
+        '../src/opts/SkBitmapProcState_opts_SSE2.cpp',
+        '../src/opts/SkBlitRow_opts_SSE2.cpp',
+        '../src/opts/SkUtils_opts_SSE2.cpp',
+      ],
+    },
+  ],
+}
+
+# Local Variables:
+# tab-width:2
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=2 shiftwidth=2: