build bgfx examples for android using cmakelist with android-ndk-native-activity-sample

cmakelist.txt

#
# Copyright (C) The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

cmake_minimum_required(VERSION 3.4.1)

# build native_app_glue as a static lib
set(${CMAKE_C_FLAGS}, "${CMAKE_C_FLAGS}")
add_library(native_app_glue STATIC
    ${ANDROID_NDK}/sources/android/native_app_glue/android_native_app_glue.c)

# now build app's shared lib
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -Werror -fno-exceptions -fno-rtti")

# Export ANativeActivity_onCreate(),
# Refer to: https://github.com/android-ndk/ndk/issues/381.
set(CMAKE_SHARED_LINKER_FLAGS
    "${CMAKE_SHARED_LINKER_FLAGS} -u ANativeActivity_onCreate")

add_library(native-activity SHARED
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/25-c99/helloworld.c
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/01-cubes/cubes.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/02-metaballs/metaballs.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/03-raymarch/raymarch.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/04-mesh/mesh.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/06-bump/bump.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/07-callback/callback.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/08-update/update.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/09-hdr/hdr.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/10-font/font.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/11-fontsdf/fontsdf.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/12-lod/lod.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/13-stencil/stencil.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/14-shadowvolumes/shadowvolumes.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/15-shadowmaps-simple/shadowmaps_simple.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/16-shadowmaps/shadowmaps.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/17-drawstress/drawstress.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/18-ibl/ibl.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/19-oit/oit.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/21-deferred/deferred.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/22-windows/windows.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/23-vectordisplay/main.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/23-vectordisplay/vectordisplay.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/24-nbody/nbody.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/26-occlusion/occlusion.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/27-terrain/terrain.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/28-wireframe/wireframe.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/29-debugdraw/debugdraw.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/30-picking/picking.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/31-rsm/reflectiveshadowmap.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/32-particles/particles.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/33-pom/pom.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/34-mvs/mvs.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/35-dynamic/dynamic.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/36-sky/sky.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/37-gpudrivenrendering/gpudrivenrendering.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/00-helloworld/helloworld.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/05-instancing/instancing.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/20-nanovg/nanovg.cpp
  )

target_include_directories(native-activity PRIVATE
    ${ANDROID_NDK}/sources/android/native_app_glue
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bx/include
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bimg/include
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/3rdparty
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/include
    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/examples/common
  )

add_library(bx STATIC IMPORTED)
add_library(bimg STATIC IMPORTED)
add_library(bimg_decode STATIC IMPORTED)
add_library(bgfx STATIC IMPORTED)
add_library(example_common STATIC IMPORTED)
add_library(example_glue STATIC IMPORTED)

set_target_properties(bx
  PROPERTIES IMPORTED_LOCATION
  ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/.build/android-x86/bin/libbxDebug.a)
set_target_properties(bimg
  PROPERTIES IMPORTED_LOCATION
  ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/.build/android-x86/bin/libbimgDebug.a)
set_target_properties(bimg_decode
  PROPERTIES IMPORTED_LOCATION
  ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/.build/android-x86/bin/libbimg_decodeDebug.a)
set_target_properties(bgfx
  PROPERTIES IMPORTED_LOCATION
  ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/.build/android-x86/bin/libbgfxDebug.a)
set_target_properties(example_common
  PROPERTIES IMPORTED_LOCATION
  ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/.build/android-x86/bin/libexample-commonDebug.a)
set_target_properties(example_glue
  PROPERTIES IMPORTED_LOCATION
  ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../submodules/bgfx/.build/android-x86/bin/libexample-glueDebug.a)

# add lib dependencies
target_link_libraries(native-activity
    example_common
    example_glue
    bgfx
    bimg
    bimg_decode
    bx
    native_app_glue
    c
    dl
    m
    android
    log
    gcc
    EGL
    GLESv2
  )