distrib/android-emugl: Move Android GPU emulation sources here.

This patch is used to add the unmodified sources of the GPU
emulation libraries that are normally under sdk/emulator/opengl/.

These sources were originally built with the platform build system,
but this is no longer the case. Since they are only built through
the emulator's own build system (i.e. android-rebuild.sh), it's
easier to put them under external/qemu/ to ensure that they are
always in sync with the rest of the emulator.

Note that the encoder sources are still in the platform under
device/generic/goldfish/opengl/.

A future patch will update the emulator build system to pick
the sources from here, and another one will remove the sources
from sdk/ after that.

Note: these are the unmodified sources from the following
      commit in https://android.googlesource.com/platform/sdk.git :

    182e469 emulator/opengl: Fix Windows cross-build.

Change-Id: If2010577ef4af4c6755ab345f424af0b546f9282

1 files changed, 29 insertions, 0 deletions

diff --git a/distrib/android-emugl/host/tools/emugen/Android.mk b/distrib/android-emugl/host/tools/emugen/Android.mk
new file mode 100644
index 000000000..4d09c42c0
--- /dev/null
+++ b/distrib/android-emugl/host/tools/emugen/Android.mk
@@ -0,0 +1,29 @@
+# Determine if the emugen build needs to be builts from
+# sources.
+LOCAL_PATH:=$(call my-dir)
+
+$(call emugl-begin-host-executable,emugen)
+
+LOCAL_SRC_FILES := \
+    ApiGen.cpp \
+    EntryPoint.cpp \
+    main.cpp \
+    Parser.cpp \
+    strUtils.cpp \
+    TypeFactory.cpp \
+
+LOCAL_HOST_BUILD := true
+
+$(call emugl-end-module)
+
+# The location of the emugen host tool that is used to generate wire
+# protocol encoders/ decoders. This variable is used by other emugl modules.
+EMUGL_EMUGEN := $(LOCAL_BUILT_MODULE)
+
+$(call emugl-begin-host-executable,emugen_unittests)
+LOCAL_SRC_FILES := \
+    Parser.cpp \
+    Parser_unittest.cpp
+LOCAL_HOST_BUILD := true
+$(call emugl-import,libemugl_gtest_host)
+$(call emugl-end-module)