I am trying to have the Android studio to be my main development IDE for java AND c/c++ code. I want to be able to debug native code.
In this case i am trying to use ARToolkit5 as a library.
Due to some examples in the ARToolkit5 i am having this build file.
i am having this Android.mk file
MY_LOCAL_PATH := $(call my-dir)
LOCAL_PATH := $(MY_LOCAL_PATH)
# Pull ARToolKit into the build
include $(CLEAR_VARS)
ARTOOLKIT_DIR := $(MY_LOCAL_PATH)/../../../../../artoolkit5/android
ARTOOLKIT_LIBDIR := $(call host-path, $(ARTOOLKIT_DIR)/obj/local/$(TARGET_ARCH_ABI))
define add_artoolkit_module
include $(CLEAR_VARS)
LOCAL_MODULE:=$1
LOCAL_SRC_FILES:=lib$1.a
include $(PREBUILT_STATIC_LIBRARY)
endef
ARTOOLKIT_LIBS := ar2 kpm util eden argsub_es armulti ar aricp jpeg arvideo
LOCAL_PATH := $(ARTOOLKIT_LIBDIR)
$(foreach module,$(ARTOOLKIT_LIBS),$(eval $(call add_artoolkit_module,$(module))))
LOCAL_PATH := $(MY_LOCAL_PATH)
# Android arvideo depends on CURL.
CURL_DIR := $(ARTOOLKIT_DIR)/jni/curl
CURL_LIBDIR := $(call host-path, $(CURL_DIR)/libs/$(TARGET_ARCH_ABI))
define add_curl_module
include $(CLEAR_VARS)
LOCAL_MODULE:=$1
#LOCAL_SRC_FILES:=lib$1.so
#include $(PREBUILT_SHARED_LIBRARY)
LOCAL_SRC_FILES:=lib$1.a
include $(PREBUILT_STATIC_LIBRARY)
endef
#CURL_LIBS := curl ssl crypto
CURL_LIBS := curl
LOCAL_PATH := $(CURL_LIBDIR)
$(foreach module,$(CURL_LIBS),$(eval $(call add_curl_module,$(module))))
LOCAL_PATH := $(MY_LOCAL_PATH)
include $(CLEAR_VARS)
# ARToolKit libs use lots of floating point, so don't compile in thumb mode.
LOCAL_ARM_MODE := arm
LOCAL_PATH := $(MY_LOCAL_PATH)
LOCAL_MODULE := ndkDebugModule
LOCAL_SRC_FILES := nftSimple.cpp ARMarkerNFT.c trackingSub.c
# Make sure DEBUG is defined for debug builds. (NDK already defines NDEBUG for release builds.)
ifeq ($(APP_OPTIM),debug)
LOCAL_CPPFLAGS += -DDEBUG
endif
LOCAL_C_INCLUDES += $(ARTOOLKIT_DIR)/../include/android $(ARTOOLKIT_DIR)/../include
LOCAL_LDLIBS += -llog -lGLESv1_CM -lz
LOCAL_WHOLE_STATIC_LIBRARIES += ar
LOCAL_STATIC_LIBRARIES += ar2 kpm util eden argsub_es armulti aricp jpeg arvideo cpufeatures
#LOCAL_SHARED_LIBRARIES += $(CURL_LIBS)
LOCAL_STATIC_LIBRARIES += $(CURL_LIBS)
include $(BUILD_SHARED_LIBRARY)
$(call import-module,android/cpufeatures)
This build is working properly. Now i am trying to convert this to the android experimental gradle file in order to be able to debug it. Well for now I am having this state:
apply plugin: 'com.android.model.application'
model {
android {
compileSdkVersion = 23
buildToolsVersion = "23.0.3"
defaultConfig.with {
applicationId = "com.nomad5.ndkdebug"
minSdkVersion.apiLevel = 16
targetSdkVersion.apiLevel = 23
versionCode = 1
versionName = "0.1"
}
}
/*
* native build settings
*/
android.ndk {
moduleName = "ndkDebugModule"
cppFlags.add("-I./../../../../../artoolkit5/include/ ")
}
android.buildTypes {
release {
minifyEnabled = false
proguardFiles.add(file('proguard-rules.txt'))
}
debug {
debuggable = true
ndk.with {
debuggable = true
}
}
}
}
/**
* The android native sources
*/
android.sources.main {
jni {
exportedHeaders {
srcDirs = [arRoot.absolutePath + "/include",
arRoot.absolutePath + "/android/jni/curl/include"]
}
source {
/* we set this to NOT automatically compile everything */
srcDirs = ["src/main"]
include "jni/nativeCodeA.cpp"
include "jni/nativeCodeB.cpp"
}
dependencies {
library "lib_ar2" linkage "static"
library "lib_kpm" linkage "static"
library "lib_util" linkage "static"
library "lib_eden" linkage "static"
library "lib_argsub_es" linkage "static"
library "lib_armulti" linkage "static"
library "lib_ar" linkage "static"
library "lib_aricp" linkage "static"
library "lib_jpeg" linkage "static"
library "lib_arvideo" linkage "static"
library "lib_cpufeatures" linkage "static"
library "lib_curl" linkage "static"
}
}
jniLibs {
source {
srcDirs = [arRoot.absolutePath + "/include",
arRoot.absolutePath + "/android/jni/curl/include"]
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile project(':aRBaseLib')
compile 'com.android.support:appcompat-v7:23.4.0'
}
The problem with the gradle ndk build is, that in my files (nativeCodeA.cpp for example) all includes that are in ../../../../../artoolkit5/android are not found. So all of the
#include <AR/ar.h>
#include <AR/arMulti.h>
#include <AR/video.h>
...
are not found.
How can I add a folder to the gradle aware ndk build like LOCAL_C_INCLUDES does in the makefile. And how can i specify specific files to compile like LOCAL_SRC_FILES in the makefile. (How does gradle know the files even if not specifying those explicitly?)
By the way i am using
distributionUrl=https\://services.gradle.org/distributions/gradle-2.8-all.zip
with
'com.android.tools.build:gradle-experimental:0.4.0'
Okay, I researched a lot and found some examples that are working. First of all you have to use the latest gradle experimantal plugin like this in your root build.gradle
'com.android.tools.build:gradle-experimental:0.4.0'
Then your gradle file will look like this
apply plugin: 'com.android.model.application'
/**
* The ar.dir in relative format
*/
def arRoot = new File("../artoolkit5")
def arPath = arRoot.absolutePath + '/android/obj/local/'
def curlPath = arRoot.absolutePath + '/android/jni/curl/libs/'
/**
* The main experimental model
*/
model {
/**
* Android APK values
*/
android {
compileSdkVersion = 23
buildToolsVersion = "23.0.3"
defaultConfig.with {
applicationId = "com.nomad5.ndkdebug"
minSdkVersion.apiLevel = 16
targetSdkVersion.apiLevel = 23
versionCode = 1
versionName = "0.1"
}
}
/**
* The build types
*/
android.buildTypes {
release {
minifyEnabled = false
proguardFiles.add(file('proguard-rules.txt'))
}
debug {
debuggable = true
ndk.with {
debuggable = true
}
}
}
/**
* All statically linked libs
*/
repositories {
libs(PrebuiltLibraries) {
lib_ar2 {
binaries.withType(StaticLibraryBinary) {
staticLibraryFile = file("${arPath}${targetPlatform.getName()}/libar2.a")
}
}
lib_kpm {
binaries.withType(StaticLibraryBinary) {
staticLibraryFile = file("${arPath}${targetPlatform.getName()}/libkpm.a")
}
}
lib_util {
binaries.withType(StaticLibraryBinary) {
staticLibraryFile = file("${arPath}${targetPlatform.getName()}/libutil.a")
}
}
lib_eden {
binaries.withType(StaticLibraryBinary) {
staticLibraryFile = file("${arPath}${targetPlatform.getName()}/libeden.a")
}
}
lib_argsub_es {
binaries.withType(StaticLibraryBinary) {
staticLibraryFile = file("${arPath}${targetPlatform.getName()}/libargsub_es.a")
}
}
lib_armulti {
binaries.withType(StaticLibraryBinary) {
staticLibraryFile = file("${arPath}${targetPlatform.getName()}/libarmulti.a")
}
}
lib_ar {
binaries.withType(StaticLibraryBinary) {
staticLibraryFile = file("${arPath}${targetPlatform.getName()}/libar.a")
}
}
lib_aricp {
binaries.withType(StaticLibraryBinary) {
staticLibraryFile = file("${arPath}${targetPlatform.getName()}/libaricp.a")
}
}
lib_jpeg {
binaries.withType(StaticLibraryBinary) {
staticLibraryFile = file("${arPath}${targetPlatform.getName()}/libjpeg.a")
}
}
lib_arvideo {
binaries.withType(StaticLibraryBinary) {
staticLibraryFile = file("${arPath}${targetPlatform.getName()}/libarvideo.a")
}
}
lib_cpufeatures {
binaries.withType(StaticLibraryBinary) {
staticLibraryFile = file("${arPath}${targetPlatform.getName()}/libcpufeatures.a")
}
}
lib_curl {
binaries.withType(StaticLibraryBinary) {
staticLibraryFile = file("${curlPath}${targetPlatform.getName()}/libcurl.a")
}
}
}
}
/*
* native build settings
*/
android.ndk {
moduleName = "ndkDebugModule"
toolchain = "clang"
stl = "c++_static"
platformVersion = 15
cppFlags.addAll(["-frtti",
"-fexceptions",
"-I${file(arRoot.absolutePath + "/include")}".toString(),
"-I${file(arRoot.absolutePath + "/android/jni/curl/include")}".toString()
])
ldLibs.addAll(['android',
'log',
'z',
'GLESv1_CM'])
abiFilters.addAll(["armeabi-v7a",
/*"arm64-v8a",*/
"x86",
/*"x86_64"*/])
}
/**
* The android native sources
*/
android.sources.main {
jni {
exportedHeaders {
srcDirs = [arRoot.absolutePath + "/include",
arRoot.absolutePath + "/android/jni/curl/include"]
}
source {
/* we set this to NOT automatically compile everything */
srcDirs = ["src/main"]
include "jni/nativeCodeA.cpp"
include "jni/nativeCodeB.cpp"
}
dependencies {
library "lib_ar2" linkage "static"
library "lib_kpm" linkage "static"
library "lib_util" linkage "static"
library "lib_eden" linkage "static"
library "lib_argsub_es" linkage "static"
library "lib_armulti" linkage "static"
library "lib_ar" linkage "static"
library "lib_aricp" linkage "static"
library "lib_jpeg" linkage "static"
library "lib_arvideo" linkage "static"
library "lib_cpufeatures" linkage "static"
library "lib_curl" linkage "static"
}
}
jniLibs {
source {
srcDirs = [arRoot.absolutePath + "/include",
arRoot.absolutePath + "/android/jni/curl/include"]
}
}
}
}
/**
* The Java dependencies
*/
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile project(':aRBaseLib')
compile 'com.android.support:appcompat-v7:23.4.0'
compile 'com.android.support:design:23.4.0'
}
/**
* Dynamically add libs to the linker
*/
class SampleMigrationRuleSource extends RuleSource {
@Mutate
void injectArmeabiV7aDebugLinkerFlags(
@Path('tasks.linkNdkDebugModuleArmeabi-v7aDebugSharedLibrary')
Task linkTask) {
injectLinkerFlags(linkTask, 'armeabi-v7a', 'debug')
}
@Mutate
void injectArmeabiV7aReleaseLinkerFlags(
@Path('tasks.linkNdkDebugModuleArmeabi-v7aReleaseSharedLibrary')
Task linkTask) {
injectLinkerFlags(linkTask, 'armeabi-v7a', 'release')
}
@Mutate
void injectX86DebugLinkerFlags(
@Path('tasks.linkNdkDebugModuleX86DebugSharedLibrary')
Task linkTask) {
injectLinkerFlags(linkTask, 'x86', 'debug')
}
@Mutate
void injectX86ReleaseLinkerFlags(
@Path('tasks.linkNdkDebugModuleX86ReleaseSharedLibrary')
Task linkTask) {
injectLinkerFlags(linkTask, 'x86', 'release')
}
private void injectLinkerFlags(linkTask, arch, buildType) {
def arRoot = new File("../artoolkit5")
def arPath = arRoot.absolutePath + '/android/obj/local/'
def curlPath = arRoot.absolutePath + '/android/jni/curl/libs/'
linkTask.doFirst {
// We are pretty clueless on this one but it is needed
if (arch.equals('arm64-v8a')) {
properties["linkerArgs"].add("-fuse-ld=gold")
}
properties["linkerArgs"].addAll([
"-l${arPath}/${arch}/libar.a".toString(),
"-l${arPath}/${arch}/libar2.a".toString(),
"-l${arPath}/${arch}/libutil.a".toString(),
"-l${arPath}/${arch}/libkpm.a".toString(),
"-l${arPath}/${arch}/libeden.a".toString(),
"-l${arPath}/${arch}/libargsub_es.a".toString(),
"-l${arPath}/${arch}/libarmulti.a".toString(),
"-l${arPath}/${arch}/libaricp.a".toString(),
"-l${arPath}/${arch}/libjpeg.a".toString(),
"-l${arPath}/${arch}/libarvideo.a".toString(),
"-l${arPath}/${arch}/libcpufeatures.a".toString(),
"-l${curlPath}/${arch}/libcurl.a".toString(),
])
}
}
}
apply plugin: SampleMigrationRuleSource