basic android support (WiP)

.gitignore

@@ -32,6 +32,7 @@ cache
 
 /external
 /third_party
+/third_party_android
 
 node_modules
 .temp

android.mk

@@ -0,0 +1,137 @@
+# -------------------- VALUES TO CONFIGURE --------------------
+
+include versions.mk
+
+ifeq ($(V),)
+HIDE=@
+MAKE += --no-print-directory
+endif
+PWD	:= $(shell pwd)
+
+# Path to Android NDK
+# NDK version must match ndkVersion in app/build.gradle
+NDK_PATH := /home/sreimers/Android/Sdk/ndk/$(shell grep ndkVersion app/android/app/build.gradle.kts | sed 's/[^0-9.]*//g')
+
+# Android API level
+API_LEVEL	:= 26
+
+
+# Set default from following values: [armeabi-v7a, arm64-v8a, x86_64]
+ANDROID_TARGET_ARCH := arm64-v8a
+
+# -------------------- GENERATED VALUES --------------------
+
+ifeq ($(ANDROID_TARGET_ARCH), armeabi-v7a)
+	TARGET       := arm-linux-androideabi
+	CLANG_TARGET := armv7a-linux-androideabi
+	ARCH         := arm
+	OPENSSL_ARCH := android-arm
+	MARCH        := armv7-a
+else
+ifeq ($(ANDROID_TARGET_ARCH), arm64-v8a)
+	TARGET       := aarch64-linux-android
+	CLANG_TARGET := $(TARGET)
+	ARCH         := arm
+	OPENSSL_ARCH := android-arm64
+	MARCH        := armv8-a
+else
+ifeq ($(ANDROID_TARGET_ARCH), x86_64)
+	TARGET       := x86_64-linux-android
+	CLANG_TARGET := $(TARGET)
+	ARCH         := x86
+	OPENSSL_ARCH := android-x86_64
+	MARCH        := x86-64
+else
+	exit 1
+endif
+endif
+endif
+
+PLATFORM := android-$(API_LEVEL)
+
+OS := $(shell uname -s | tr "[A-Z]" "[a-z]")
+ifeq ($(OS),linux)
+	HOST_OS   := linux-x86_64
+endif
+ifeq ($(OS),darwin)
+	HOST_OS   := darwin-x86_64
+endif
+
+# Toolchain and sysroot
+TOOLCHAIN				:= $(NDK_PATH)/toolchains/llvm/prebuilt/$(HOST_OS)
+CMAKE_TOOLCHAIN_FILE	:= $(NDK_PATH)/build/cmake/android.toolchain.cmake
+SYSROOT					:= $(TOOLCHAIN)/sysroot
+PKG_CONFIG_LIBDIR		:= $(NDK_PATH)/prebuilt/$(HOST_OS)/lib/pkgconfig
+
+# Toolchain tools
+PATH	:= $(TOOLCHAIN)/bin:${PATH}
+AR		:= llvm-ar
+AS		:= $(CLANG_TARGET)$(API_LEVEL)-clang
+CC		:= $(CLANG_TARGET)$(API_LEVEL)-clang
+CXX		:= $(CLANG_TARGET)$(API_LEVEL)-clang++
+LD		:= ld.lld
+RANLIB	:= llvm-ranlib
+STRIP	:= llvm-strip
+
+CMAKE_ANDROID_FLAGS := \
+	-DANDROID=ON \
+	-DANDROID_PLATFORM=$(API_LEVEL) \
+	-DCMAKE_SYSTEM_NAME=Android \
+	-DCMAKE_SYSTEM_VERSION=$(API_LEVEL) \
+	-DCMAKE_TOOLCHAIN_FILE=$(CMAKE_TOOLCHAIN_FILE) \
+	-DANDROID_ABI=$(ANDROID_TARGET_ARCH) \
+	-DCMAKE_ANDROID_ARCH_ABI=$(ANDROID_TARGET_ARCH) \
+	-DCMAKE_SKIP_INSTALL_RPATH=ON \
+	-DCMAKE_C_COMPILER=$(CC) \
+	-DCMAKE_CXX_COMPILER=$(CXX) \
+	-DCMAKE_POSITION_INDEPENDENT_CODE=ON \
+	-DCMAKE_BUILD_TYPE=Release
+
+THIRD_PARTY_ROOT := ${PWD}/third_party_android/${ANDROID_TARGET_ARCH}
+
+default: all
+
+.PHONY: third_party_dir
+third_party_dir:
+	mkdir -p ${THIRD_PARTY_ROOT}/include
+	mkdir -p ${THIRD_PARTY_ROOT}/lib
+
+.PHONY: openssl
+openssl: third_party_dir
+	$(HIDE)cd third_party_android && \
+		wget ${OPENSSL_MIRROR}/openssl-${OPENSSL_VERSION}.tar.gz && \
+		tar -xzf openssl-${OPENSSL_VERSION}.tar.gz && \
+		cp -a openssl-${OPENSSL_VERSION} openssl
+	@rm -f third_party/openssl-${OPENSSL_VERSION}.tar.gz
+	$(HIDE)cd third_party_android/openssl && \
+		ANDROID_NDK_ROOT=$(NDK_PATH) \
+		./Configure $(OPENSSL_ARCH) no-shared no-tests \
+		-U__ANDROID_API__ -D__ANDROID_API__=$(API_LEVEL) && \
+		make -j build_libs && \
+		cp *.a ${THIRD_PARTY_ROOT}/lib && \
+		cp -a include/openssl ${THIRD_PARTY_ROOT}/include/
+
+.PHONY: lmdb
+lmdb: third_party_dir
+	$(HIDE)cd third_party_android && \
+		git clone https://github.com/LMDB/lmdb && \
+		cd lmdb/libraries/liblmdb && \
+		make CC=$(CC) -j && \
+		cp liblmdb.a ${THIRD_PARTY_ROOT}/lib/ && \
+		cp lmdb.h ${THIRD_PARTY_ROOT}/include/
+
+.PHONY: opus
+opus: third_party_dir
+	$(HIDE)cd third_party_android && \
+		wget ${OPUS_MIRROR}/opus-${OPUS_VERSION}.tar.gz && \
+		tar -xzf opus-${OPUS_VERSION}.tar.gz && \
+		mv opus-${OPUS_VERSION} opus
+	$(HIDE)cd third_party_android/opus && \
+		CC=$(CC) ./configure --host=${TARGET} --disable-shared --with-pic --enable-dred \
+		--enable-deep-plc --enable-osce && \
+		make -j && \
+		cp .libs/libopus.a ${THIRD_PARTY_ROOT}/lib/ && \
+		mkdir -p ${THIRD_PARTY_ROOT}/include/opus && \
+		cp include/*.h ${THIRD_PARTY_ROOT}/include/opus/
+
+all: openssl lmdb opus

app/android/.gitignore

@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties