From Rafa Gaitan and Jorge Izquierdo, build support for Android NDK.

"- In order to build against GLES1 we execute:
$ mkdir build_android_gles1
$ cd build_android_gles1
$ cmake .. -DOSG_BUILD_PLATFORM_ANDROID=ON -DDYNAMIC_OPENTHREADS=OFF
-DDYNAMIC_OPENSCENEGRAPH=OFF -DANDROID_NDK=<path_to_android_ndk>/
-DOSG_GLES1_AVAILABLE=ON -DOSG_GL1_AVAILABLE=OFF
-DOSG_GL2_AVAILABLE=OFF -DOSG_GL_DISPLAYLISTS_AVAILABLE=OFF -DJ=2
-DOSG_CPP_EXCEPTIONS_AVAILABLE=OFF
$ make
 If all is correct you will have and static OSG inside:
build_android_gles1/bin/ndk/local/armeabi.

- GLES2 is not tested/proved, but I think it could be possible build
it with the correct cmake flags.
- The flag -DJ=2 is used to pass to the ndk-build the number of
processors to speed up the building.
- make install is not yet supported."

PlatformSpecifics/Android/Android.mk.master.in

@@ -0,0 +1,7 @@
+#ANDROID ROOT MAKEFILE
+OSG_ROOT := $(call my-dir)
+LOCAL_PATH := $(call my-dir)
+OSG_ROOT := $(LOCAL_PATH)
+OSGInclude :=   $(OSG_ROOT)/include/OpenThreads \
+                $(OSG_ROOT)/include/osg 
+include src/Android.mk

PlatformSpecifics/Android/Android.mk.modules.in

@@ -0,0 +1,23 @@
+#ANDROID makefile   ${MODULE_NAME}
+
+LOCAL_PATH :=       ${MODULE_DIR}
+
+include $(CLEAR_VARS)
+
+LOCAL_CPP_EXTENSION := ${CPP_EXTENSION}
+
+LOCAL_LDLIBS :=     ${MODULE_LIBS}
+
+LOCAL_MODULE :=     ${MODULE_NAME}
+
+LOCAL_SRC_FILES :=  ${MODULE_SOURCES}
+
+LOCAL_C_INCLUDES := ${MODULE_INCLUDES}
+
+LOCAL_CFLAGS :=     ${MODULE_FLAGS_C}
+
+LOCAL_CPPFLAGS :=   ${MODULE_FLAGS_CPP}
+
+#include $(BUILD_STATIC_LIBRARY)
+include ${MODULE_BUILD_TYPE}
+

PlatformSpecifics/Android/Android.mk.serializers.in

@@ -0,0 +1,17 @@
+#ANDROID makefile in src
+
+SERIALIZER_ROOT := $(call my-dir)
+LOCAL_PATH := $(call my-dir)
+SERIALIZER_ROOT := $(LOCAL_PATH)
+
+#include $(call all-subdir-makefiles)
+include $(SERIALIZER_ROOT)/osg/Android.mk
+include $(SERIALIZER_ROOT)/osgAnimation/Android.mk
+include $(SERIALIZER_ROOT)/osgFX/Android.mk
+include $(SERIALIZER_ROOT)/osgManipulator/Android.mk
+include $(SERIALIZER_ROOT)/osgParticle/Android.mk
+include $(SERIALIZER_ROOT)/osgShadow/Android.mk
+include $(SERIALIZER_ROOT)/osgSim/Android.mk
+include $(SERIALIZER_ROOT)/osgTerrain/Android.mk
+include $(SERIALIZER_ROOT)/osgText/Android.mk
+include $(SERIALIZER_ROOT)/osgVolume/Android.mk

PlatformSpecifics/Android/Android.mk.src.in

@@ -0,0 +1,8 @@
+#ANDROID makefile in src
+
+SRC_ROOT := $(call my-dir)
+LOCAL_PATH := $(call my-dir)
+SRC_ROOT := $(LOCAL_PATH)
+
+$ENV{AND_OSG_LIB_PATHS}
+

PlatformSpecifics/Android/AndroidManifest.xml.master.in

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+      package="com.openscenegraph"
+      android:versionCode="1"
+      android:versionName="1.0">
+   
+</manifest> 

PlatformSpecifics/Android/Application.mk.master.in

@@ -0,0 +1,15 @@
+#ANDROID APPLICATION MAKEFILE
+APP_BUILD_SCRIPT := $(call my-dir)/Android.mk
+APP_PROJECT_PATH := $(call my-dir)
+
+APP_OPTIM := release
+
+APP_PLATFORM := android-5
+APP_STL := gnustl_static
+APP_CPPFLAGS := -fexceptions -frtti
+#APP_CPPFLAGS := -Os -mthumb-interwork -fno-short-enums
+#APP_CPPFLAGS := -Wl,--no-undefined
+
+APP_ABI := armeabi 
+#armeabi-v7a
+APP_MODULES      := $ENV{AND_OSG_LIB_NAMES}