[英]How do I add a “something.a” library file to my C++ Android Gradle project?
我有一個名為somelibrary/lib/c++/armeabi-v7a/libsomelibrary.a
。 如何將其添加到Android項目中的Gradle文件中?
顯然該庫還包含somelibrary/include/somelibrary/*.h
下的標題, somelibrary/include/somelibrary/*.h
很簡單,因為我可以添加一行cppFlags.addAll(['-I' + file('somepath/somelibrary/include')])
到我的build.gradle
。
但是我如何將.a文件添加到項目中,以便鏈接適用於所有二進制格式,不僅是armeabi-v7a而且還有arm64-v8a,armeabi和x86? 該庫包含所有這些二進制格式的.a文件版本。 除此之外,它還包含兩個不同的c ++標准庫的版本:“c ++”和“gnustl”。 我沒有庫的源代碼。
它取決於gradle版本使用的內容,如果是build:gradle-experimental:0.7.3'
在app build.gradle文件中:
首先定義庫存儲庫
repositories { libs(PrebuiltLibraries) { your_lib { headers.srcDir "${your_lib_path}/include" binaries.withType(StaticLibraryBinary) { staticLibraryFile = file("${your_lib_path}/your_library.a") } } } }
定義你的ndk模塊
android.ndk { moduleName = "your_ndk_module" platformVersion = 9 toolchain "gcc" debuggable true cppFlags.add("-fexceptions") cppFlags.add("-std=c++11") stl = "gnustl_static" }
定義庫源
android.sources { main { jni { dependencies { library "your_lib" linkage "static" } } } }
定義您的產品口味
android.productFlavors { create("arm") { ndk.abiFilters.add("armeabi") ndk.ldFlags.add("-L${file('src/main/jniLibs/armeabi')}".toString()) ndk.ldLibs.addAll(["your_lib"]) } create("arm7") { ndk.abiFilters.add("armeabi-v7a") ndk.ldFlags.add("-L${file('src/main/jniLibs/armeabi-v7a')}".toString()) ndk.ldLibs.addAll(["your_lib"]) } create("arm8") { ndk.abiFilters.add("arm64-v8a") ndk.ldFlags.add("-L${file('src/main/jniLibs/arm64-v8a')}".toString()) ndk.ldLibs.addAll(["your_lib"]) } }
整碼:
apply plugin: 'com.android.model.application'
def your_lib_path = file(project(':app').projectDir).absolutePath + "/your_lib_path"
model {
repositories {
libs(PrebuiltLibraries) {
your_lib {
headers.srcDir "${your_lib_path}/include"
binaries.withType(StaticLibraryBinary) {
staticLibraryFile = file("${your_lib_path}/your_library.a")
}
}
}
}
//define your ndk-module:
android.ndk {
moduleName = "your_ndk_module"
platformVersion = 9
toolchain "gcc"
debuggable true
cppFlags.add("-fexceptions")
cppFlags.add("-std=c++11")
stl = "gnustl_static" // Which STL library to use: gnustl or stlport
}
//define your android sources
android.sources {
main {
jni {
dependencies {
library "your_lib" linkage "static"
}
}
}
}
//define your product flavours:
android.productFlavors {
// for detailed abiFilter descriptions, refer to "Supported ABIs" @
// https://developer.android.com/ndk/guides/abis.html#sa
create("arm") {
ndk.abiFilters.add("armeabi")
ndk.ldFlags.add("-L${file('src/main/jniLibs/armeabi')}".toString())
ndk.ldLibs.addAll(["your_lib"])
}
create("arm7") {
ndk.abiFilters.add("armeabi-v7a")
ndk.ldFlags.add("-L${file('src/main/jniLibs/armeabi-v7a')}".toString())
ndk.ldLibs.addAll(["your_lib"])
}
create("arm8") {
ndk.abiFilters.add("arm64-v8a")
ndk.ldFlags.add("-L${file('src/main/jniLibs/arm64-v8a')}".toString())
ndk.ldLibs.addAll(["your_lib"])
}
}
}
您必須根據您的gradle版本修改gradle文件。
希望這可以幫助。
干杯。
垂發。
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