超哥 使用 Android NDK 编译 Lua
启动 Android Studio ,创建一个 Android 项目，勾选 C++ Support。
一路 Next 到这里，直接 Finish，不用勾选保持默认即可。
如果之前没有安装 NDK 和 Cmake 工具，到这里会提示安装 NDK 等工具，直接安装，我这里之前已经安装了，所以略过。
等待工程就绪之后，正常构建一次，看 Hello World 能不能正常构建运行起来。查看编译后的 APK 文件，看看里面是否有下列目录和 .so 文件。
Executing tasks: [:app:assembleDebug] 省略一堆Log External native generate JSON debug: JSON generation completed without problems :app:externalNativeBuildDebug Build native-lib x86_64 [1/2] Building CXX object CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o [2/2] Linking CXX shared library ........buildintermediatescmakedebugobjx86_64libnative-lib.so Build native-lib x86 [1/2] Building CXX object CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o [2/2] Linking CXX shared library ........buildintermediatescmakedebugobjx86libnative-lib.so Build native-lib arm64-v8a [1/2] Building CXX object CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o [2/2] Linking CXX shared library ........buildintermediatescmakedebugobjarm64-v8alibnative-lib.so Build native-lib armeabi-v7a [1/2] Building CXX object CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o [2/2] Linking CXX shared library ........buildintermediatescmakedebugobjarmeabi-v7alibnative-lib.so :app:compileDebugSources :app:mergeDebugShaders :app:compileDebugShaders :app:generateDebugAssets :app:mergeDebugAssets :app:transformClassesWithDexBuilderForDebug :app:transformDexArchiveWithExternalLibsDexMergerForDebug :app:transformDexArchiveWithDexMergerForDebug :app:mergeDebugJniLibFolders :app:transformNativeLibsWithMergeJniLibsForDebug :app:transformNativeLibsWithStripDebugSymbolForDebug :app:processDebugJavaRes NO-SOURCE :app:transformResourcesWithMergeJavaResForDebug :app:validateSigningDebug :app:packageDebug :app:assembleDebug BUILD SUCCESSFUL in 12s 29 actionable tasks: 16 executed, 13 up-to-date 通过 7-Zip 可以查看 APK 里面的文件组成结构，如下是 lib 目录下的内容，分别对应不同的 CPU 架构。
如果能到这一步，说明至少 Android Studio 配置基本是 OK 的，NDK 能正常工作。
在 Android Studio 3.1 后，Gradle Console 就不见了，要查看构建过程和步骤，在 Build 窗口点击 Toggle View 就可以查看构建步骤了。
在 Project 面板中，CPP 目录下的文件就是 C/CPP 的源文件目录，我们从 Lua 官网下载源码后，将 .c 和 .h 文件当道这个目录下面。
目前我能下载到最新的 Lua 版本是 5.3.5 ，粘贴到 CPP 目录后，文件并不会显示，不知道这是不是 Android Studio 的 bug，接下来修改 CMakeLists.txt 里面的内容，将源代码增加到构建列表。
add_library( # Sets the name of the library. luajit # Sets the library as a shared library. SHARED # Provides a relative path to your source file(s). src/main/cpp/lapi.c src/main/cpp/lauxlib.c src/main/cpp/lbaselib.c src/main/cpp/lbitlib.c src/main/cpp/lcode.c src/main/cpp/lcorolib.c src/main/cpp/lctype.c src/main/cpp/ldblib.c src/main/cpp/ldebug.c src/main/cpp/ldo.c src/main/cpp/ldump.c src/main/cpp/lfunc.c src/main/cpp/lgc.c src/main/cpp/linit.c src/main/cpp/liolib.c src/main/cpp/llex.c src/main/cpp/lmathlib.c src/main/cpp/lmem.c src/main/cpp/loadlib.c src/main/cpp/lobject.c src/main/cpp/lopcodes.c src/main/cpp/loslib.c src/main/cpp/lparser.c src/main/cpp/lstate.c src/main/cpp/lstate.h src/main/cpp/lstring.c src/main/cpp/lstrlib.c src/main/cpp/ltable.c src/main/cpp/ltablib.c src/main/cpp/ltm.c src/main/cpp/lua.c src/main/cpp/lua.hpp src/main/cpp/lundump.c src/main/cpp/lutf8lib.c src/main/cpp/lvm.c src/main/cpp/lzio.c) 执行编译，这个时候 Build 窗口可能会出现一片红 …
具体错误内容如下：
Execution failed for task ':app:externalNativeBuildDebug'. > Build command failed. Error while executing process D:ANDROIDSdkcmake3.6.4111459bincmake.exe with arguments {--build D:ANDROID_PROJECTSHelloLua2app.externalNativeBuildcmakedebugx86_64 --target luajit} [1/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lcode.c.o [2/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lcorolib.c.o [3/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lauxlib.c.o [4/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lbitlib.c.o [5/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lapi.c.o [6/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lbaselib.c.o [7/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/loadlib.c.o [8/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldo.c.o [9/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lgc.c.o [10/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldump.c.o [11/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lmathlib.c.o [12/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/liolib.c.o [13/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lctype.c.o [14/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldebug.c.o [15/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/linit.c.o [16/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldblib.c.o [17/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/llex.c.o [18/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lfunc.c.o [19/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lmem.c.o [20/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lobject.c.o [21/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltm.c.o [22/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lopcodes.c.o [23/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstate.c.o [24/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstrlib.c.o [25/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltablib.c.o [26/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lparser.c.o [27/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lua.c.o [28/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/luac.c.o [29/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstring.c.o [30/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lundump.c.o [31/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lutf8lib.c.o [32/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lvm.c.o [33/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltable.c.o [34/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/loslib.c.o [35/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lzio.c.o D:ANDROID_PROJECTSHelloLua2appsrcmaincpploslib.c:169:3: warning: 'tmpnam' is deprecated: tempnam is unsafe, use mkstemp or tmpfile instead [-Wdeprecated-declarations] lua_tmpnam(buff, err); ^ D:ANDROID_PROJECTSHelloLua2appsrcmaincpploslib.c:131:33: note: expanded from macro 'lua_tmpnam' #define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); } ^ D:/ANDROID/Sdk/ndk-bundle/sysroot/usr/includestdio.h:167:5: note: 'tmpnam' has been explicitly marked deprecated here __warnattr("tempnam is unsafe, use mkstemp or tmpfile instead"); ^ D:/ANDROID/Sdk/ndk-bundle/sysroot/usr/includesys/cdefs.h:160:40: note: expanded from macro '__warnattr' #define __warnattr(msg) __attribute__((deprecated(msg))) ^ 1 warning generated. [36/36] Linking C shared library ........buildintermediatescmakedebugobjx86_64libluajit.so FAILED: cmd.exe /C "cd . && D:ANDROIDSdkndk-bundletoolchainsllvmprebuiltwindows-x86_64binclang.exe --target=x86_64-none-linux-android21 --gcc-toolchain=D:/ANDROID/Sdk/ndk-bundle/toolchains/x86_64-4.9/prebuilt/windows-x86_64 --sysroot=D:/ANDROID/Sdk/ndk-bundle/sysroot -fPIC -isystem D:/ANDROID/Sdk/ndk-bundle/sysroot/usr/include/x86_64-linux-android -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -Wa,--noexecstack -Wformat -Werror=format-security -O0 -fno-limit-debug-info -Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libatomic.a -nostdlib++ --sysroot D:/ANDROID/Sdk/ndk-bundle/platforms/android-21/arch-x86_64 -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -LD:/ANDROID/Sdk/ndk-bundle/sources/cxx-stl/llvm-libc++/libs/x86_64 -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname,libluajit.so -o ........buildintermediatescmakedebugobjx86_64libluajit.so CMakeFiles/luajit.dir/src/main/cpp/lapi.c.o CMakeFiles/luajit.dir/src/main/cpp/lauxlib.c.o CMakeFiles/luajit.dir/src/main/cpp/lbaselib.c.o CMakeFiles/luajit.dir/src/main/cpp/lbitlib.c.o CMakeFiles/luajit.dir/src/main/cpp/lcode.c.o CMakeFiles/luajit.dir/src/main/cpp/lcorolib.c.o CMakeFiles/luajit.dir/src/main/cpp/lctype.c.o CMakeFiles/luajit.dir/src/main/cpp/ldblib.c.o CMakeFiles/luajit.dir/src/main/cpp/ldebug.c.o CMakeFiles/luajit.dir/src/main/cpp/ldo.c.o CMakeFiles/luajit.dir/src/main/cpp/ldump.c.o CMakeFiles/luajit.dir/src/main/cpp/lfunc.c.o CMakeFiles/luajit.dir/src/main/cpp/lgc.c.o CMakeFiles/luajit.dir/src/main/cpp/linit.c.o CMakeFiles/luajit.dir/src/main/cpp/liolib.c.o CMakeFiles/luajit.dir/src/main/cpp/llex.c.o CMakeFiles/luajit.dir/src/main/cpp/lmathlib.c.o CMakeFiles/luajit.dir/src/main/cpp/lmem.c.o CMakeFiles/luajit.dir/src/main/cpp/loadlib.c.o CMakeFiles/luajit.dir/src/main/cpp/lobject.c.o CMakeFiles/luajit.dir/src/main/cpp/lopcodes.c.o CMakeFiles/luajit.dir/src/main/cpp/loslib.c.o CMakeFiles/luajit.dir/src/main/cpp/lparser.c.o CMakeFiles/luajit.dir/src/main/cpp/lstate.c.o CMakeFiles/luajit.dir/src/main/cpp/lstring.c.o CMakeFiles/luajit.dir/src/main/cpp/lstrlib.c.o CMakeFiles/luajit.dir/src/main/cpp/ltable.c.o CMakeFiles/luajit.dir/src/main/cpp/ltablib.c.o CMakeFiles/luajit.dir/src/main/cpp/ltm.c.o CMakeFiles/luajit.dir/src/main/cpp/lua.c.o CMakeFiles/luajit.dir/src/main/cpp/luac.c.o CMakeFiles/luajit.dir/src/main/cpp/lundump.c.o CMakeFiles/luajit.dir/src/main/cpp/lutf8lib.c.o CMakeFiles/luajit.dir/src/main/cpp/lvm.c.o CMakeFiles/luajit.dir/src/main/cpp/lzio.c.o -llog -latomic -lm && cd ." D:/ANDROID/Sdk/ndk-bundle/toolchains/x86_64-4.9/prebuilt/windows-x86_64/lib/gcc/x86_64-linux-android/4.9.x/../../../../x86_64-linux-android/binld: error: CMakeFiles/luajit.dir/src/main/cpp/luac.c.o: multiple definition of 'main' D:/ANDROID/Sdk/ndk-bundle/toolchains/x86_64-4.9/prebuilt/windows-x86_64/lib/gcc/x86_64-linux-android/4.9.x/../../../../x86_64-linux-android/binld: CMakeFiles/luajit.dir/src/main/cpp/lua.c.o: previous definition here clang.exe: error: linker command failed with exit code 1 (use -v to see invocation) ninja: build stopped: subcommand failed. * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights. * Get more help at https://help.gradle.org BUILD FAILED in 9s 21 actionable tasks: 18 executed, 3 up-to-date 提示中说的也比较清楚，我们使用了已经废弃了的函数：warning: ‘tmpnam’ is deprecated: tempnam is unsafe, use mkstemp or tmpfile instead，但是项目中，使用这个 tmpnam 的比较多，而且需要改 Lua 源代码，本着不对 Lua 改动的原则，我们在 CMakeLists.txt 中增加下面的一行代码，屏蔽废弃函数的错误警告。
add_definitions(-Wno-deprecated) 最终，文件结构如下：
继续编译，发现依然编译不通过，Build 窗口依然一片红，如下：
Executing tasks: [clean, :app:assembleDebug] 省略一堆Log * What went wrong: Execution failed for task ':app:externalNativeBuildDebug'. > Build command failed. Error while executing process D:ANDROIDSdkcmake3.6.4111459bincmake.exe with arguments {--build D:ANDROID_PROJECTSHelloLua2app.externalNativeBuildcmakedebugx86_64 --target luajit} Recompacting log... [1/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lcorolib.c.o [2/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lapi.c.o [3/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lbaselib.c.o [4/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lbitlib.c.o [5/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lcode.c.o [6/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lauxlib.c.o [7/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldebug.c.o [8/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lfunc.c.o [9/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/linit.c.o [10/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/liolib.c.o [11/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lctype.c.o [12/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lgc.c.o [13/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/llex.c.o [14/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldblib.c.o [15/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldo.c.o [16/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lmem.c.o [17/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/loadlib.c.o [18/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lmathlib.c.o [19/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldump.c.o [20/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lobject.c.o [21/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstrlib.c.o [22/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/loslib.c.o [23/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lopcodes.c.o [24/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltable.c.o [25/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lua.c.o [26/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lundump.c.o [27/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lparser.c.o [28/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstring.c.o [29/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltablib.c.o [30/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltm.c.o [31/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstate.c.o [32/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lutf8lib.c.o [33/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lvm.c.o [34/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/luac.c.o [35/36] Building C object CMakeFiles/luajit.dir/src/main/cpp/lzio.c.o [36/36] Linking C shared library ........buildintermediatescmakedebugobjx86_64libluajit.so FAILED: cmd.exe /C "cd . && D:ANDROIDSdkndk-bundletoolchainsllvmprebuiltwindows-x86_64binclang.exe --target=x86_64-none-linux-android21 --gcc-toolchain=D:/ANDROID/Sdk/ndk-bundle/toolchains/x86_64-4.9/prebuilt/windows-x86_64 --sysroot=D:/ANDROID/Sdk/ndk-bundle/sysroot -fPIC -isystem D:/ANDROID/Sdk/ndk-bundle/sysroot/usr/include/x86_64-linux-android -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -Wa,--noexecstack -Wformat -Werror=format-security -O0 -fno-limit-debug-info -Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libatomic.a -nostdlib++ --sysroot D:/ANDROID/Sdk/ndk-bundle/platforms/android-21/arch-x86_64 -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -LD:/ANDROID/Sdk/ndk-bundle/sources/cxx-stl/llvm-libc++/libs/x86_64 -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname,libluajit.so -o ........buildintermediatescmakedebugobjx86_64libluajit.so CMakeFiles/luajit.dir/src/main/cpp/lapi.c.o CMakeFiles/luajit.dir/src/main/cpp/lauxlib.c.o CMakeFiles/luajit.dir/src/main/cpp/lbaselib.c.o CMakeFiles/luajit.dir/src/main/cpp/lbitlib.c.o CMakeFiles/luajit.dir/src/main/cpp/lcode.c.o CMakeFiles/luajit.dir/src/main/cpp/lcorolib.c.o CMakeFiles/luajit.dir/src/main/cpp/lctype.c.o CMakeFiles/luajit.dir/src/main/cpp/ldblib.c.o CMakeFiles/luajit.dir/src/main/cpp/ldebug.c.o CMakeFiles/luajit.dir/src/main/cpp/ldo.c.o CMakeFiles/luajit.dir/src/main/cpp/ldump.c.o CMakeFiles/luajit.dir/src/main/cpp/lfunc.c.o CMakeFiles/luajit.dir/src/main/cpp/lgc.c.o CMakeFiles/luajit.dir/src/main/cpp/linit.c.o CMakeFiles/luajit.dir/src/main/cpp/liolib.c.o CMakeFiles/luajit.dir/src/main/cpp/llex.c.o CMakeFiles/luajit.dir/src/main/cpp/lmathlib.c.o CMakeFiles/luajit.dir/src/main/cpp/lmem.c.o CMakeFiles/luajit.dir/src/main/cpp/loadlib.c.o CMakeFiles/luajit.dir/src/main/cpp/lobject.c.o CMakeFiles/luajit.dir/src/main/cpp/lopcodes.c.o CMakeFiles/luajit.dir/src/main/cpp/loslib.c.o CMakeFiles/luajit.dir/src/main/cpp/lparser.c.o CMakeFiles/luajit.dir/src/main/cpp/lstate.c.o CMakeFiles/luajit.dir/src/main/cpp/lstring.c.o CMakeFiles/luajit.dir/src/main/cpp/lstrlib.c.o CMakeFiles/luajit.dir/src/main/cpp/ltable.c.o CMakeFiles/luajit.dir/src/main/cpp/ltablib.c.o CMakeFiles/luajit.dir/src/main/cpp/ltm.c.o CMakeFiles/luajit.dir/src/main/cpp/lua.c.o CMakeFiles/luajit.dir/src/main/cpp/luac.c.o CMakeFiles/luajit.dir/src/main/cpp/lundump.c.o CMakeFiles/luajit.dir/src/main/cpp/lutf8lib.c.o CMakeFiles/luajit.dir/src/main/cpp/lvm.c.o CMakeFiles/luajit.dir/src/main/cpp/lzio.c.o -llog -latomic -lm && cd ." D:/ANDROID/Sdk/ndk-bundle/toolchains/x86_64-4.9/prebuilt/windows-x86_64/lib/gcc/x86_64-linux-android/4.9.x/../../../../x86_64-linux-android/binld: error: CMakeFiles/luajit.dir/src/main/cpp/luac.c.o: multiple definition of 'main' D:/ANDROID/Sdk/ndk-bundle/toolchains/x86_64-4.9/prebuilt/windows-x86_64/lib/gcc/x86_64-linux-android/4.9.x/../../../../x86_64-linux-android/binld: CMakeFiles/luajit.dir/src/main/cpp/lua.c.o: previous definition here clang.exe: error: linker command failed with exit code 1 (use -v to see invocation) ninja: build stopped: subcommand failed. * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights. * Get more help at https://help.gradle.org BUILD FAILED in 9s 21 actionable tasks: 19 executed, 2 up-to-date 在这个错误里，有两处非常明显：
error: CMakeFiles/luajit.dir/src/main/cpp/luac.c.o: multiple definition of 'main' CMakeFiles/luajit.dir/src/main/cpp/lua.c.o: previous definition here 事实上，我们也不需要 Main 函数的定义，因为编译为 SHARE_LIBRARY ，所以屏蔽这个文件即可。
再次构建，发现还是一片红… 错误如下：
省略一堆Log Execution failed for task ':app:externalNativeBuildDebug'. > Build command failed. Error while executing process D:ANDROIDSdkcmake3.6.4111459bincmake.exe with arguments {--build D:ANDROID_PROJECTSHelloLua2app.externalNativeBuildcmakedebugx86 --target luajit} [1/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lbaselib.c.o [2/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lbitlib.c.o [3/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lcode.c.o [4/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lauxlib.c.o [5/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lcorolib.c.o [6/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lapi.c.o [7/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lgc.c.o [8/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/loadlib.c.o [9/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lobject.c.o [10/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldblib.c.o [11/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lctype.c.o [12/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldump.c.o [13/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/llex.c.o [14/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/liolib.c.o [15/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldo.c.o [16/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lmathlib.c.o [17/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lmem.c.o [18/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/linit.c.o [19/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lfunc.c.o [20/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldebug.c.o [21/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lvm.c.o [22/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lutf8lib.c.o [23/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/loslib.c.o [24/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstrlib.c.o [25/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lzio.c.o [26/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lparser.c.o [27/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lua.c.o [28/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstring.c.o [29/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltm.c.o [30/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lopcodes.c.o [31/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstate.c.o [32/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltablib.c.o [33/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lundump.c.o [34/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltable.c.o [35/35] Linking C shared library ........buildintermediatescmakedebugobjx86libluajit.so FAILED: cmd.exe /C "cd . && D:ANDROIDSdkndk-bundletoolchainsllvmprebuiltwindows-x86_64binclang.exe --target=i686-none-linux-android19 --gcc-toolchain=D:/ANDROID/Sdk/ndk-bundle/toolchains/x86-4.9/prebuilt/windows-x86_64 --sysroot=D:/ANDROID/Sdk/ndk-bundle/sysroot -fPIC -isystem D:/ANDROID/Sdk/ndk-bundle/sysroot/usr/include/i686-linux-android -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -mstackrealign -Wa,--noexecstack -Wformat -Werror=format-security -O0 -fno-limit-debug-info -Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libatomic.a -nostdlib++ --sysroot D:/ANDROID/Sdk/ndk-bundle/platforms/android-19/arch-x86 -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -LD:/ANDROID/Sdk/ndk-bundle/sources/cxx-stl/llvm-libc++/libs/x86 -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname,libluajit.so -o ........buildintermediatescmakedebugobjx86libluajit.so CMakeFiles/luajit.dir/src/main/cpp/lapi.c.o CMakeFiles/luajit.dir/src/main/cpp/lauxlib.c.o CMakeFiles/luajit.dir/src/main/cpp/lbaselib.c.o CMakeFiles/luajit.dir/src/main/cpp/lbitlib.c.o CMakeFiles/luajit.dir/src/main/cpp/lcode.c.o CMakeFiles/luajit.dir/src/main/cpp/lcorolib.c.o CMakeFiles/luajit.dir/src/main/cpp/lctype.c.o CMakeFiles/luajit.dir/src/main/cpp/ldblib.c.o CMakeFiles/luajit.dir/src/main/cpp/ldebug.c.o CMakeFiles/luajit.dir/src/main/cpp/ldo.c.o CMakeFiles/luajit.dir/src/main/cpp/ldump.c.o CMakeFiles/luajit.dir/src/main/cpp/lfunc.c.o CMakeFiles/luajit.dir/src/main/cpp/lgc.c.o CMakeFiles/luajit.dir/src/main/cpp/linit.c.o CMakeFiles/luajit.dir/src/main/cpp/liolib.c.o CMakeFiles/luajit.dir/src/main/cpp/llex.c.o CMakeFiles/luajit.dir/src/main/cpp/lmathlib.c.o CMakeFiles/luajit.dir/src/main/cpp/lmem.c.o CMakeFiles/luajit.dir/src/main/cpp/loadlib.c.o CMakeFiles/luajit.dir/src/main/cpp/lobject.c.o CMakeFiles/luajit.dir/src/main/cpp/lopcodes.c.o CMakeFiles/luajit.dir/src/main/cpp/loslib.c.o CMakeFiles/luajit.dir/src/main/cpp/lparser.c.o CMakeFiles/luajit.dir/src/main/cpp/lstate.c.o CMakeFiles/luajit.dir/src/main/cpp/lstring.c.o CMakeFiles/luajit.dir/src/main/cpp/lstrlib.c.o CMakeFiles/luajit.dir/src/main/cpp/ltable.c.o CMakeFiles/luajit.dir/src/main/cpp/ltablib.c.o CMakeFiles/luajit.dir/src/main/cpp/ltm.c.o CMakeFiles/luajit.dir/src/main/cpp/lua.c.o CMakeFiles/luajit.dir/src/main/cpp/lundump.c.o CMakeFiles/luajit.dir/src/main/cpp/lutf8lib.c.o CMakeFiles/luajit.dir/src/main/cpp/lvm.c.o CMakeFiles/luajit.dir/src/main/cpp/lzio.c.o -llog -latomic -lm && cd ." D:ANDROID_PROJECTSHelloLua2appsrcmaincpp/liolib.c:446: error: undefined reference to 'localeconv' D:ANDROID_PROJECTSHelloLua2appsrcmaincpp/lobject.c:287: error: undefined reference to 'localeconv' D:ANDROID_PROJECTSHelloLua2appsrcmaincpp/lobject.c:381: error: undefined reference to 'localeconv' D:ANDROID_PROJECTSHelloLua2appsrcmaincpp/lstrlib.c:936: error: undefined reference to 'localeconv' clang.exe: error: linker command failed with exit code 1 (use -v to see invocation) ninja: build stopped: subcommand failed. * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights. * Get more help at https://help.gradle.org BUILD FAILED in 12s 21 actionable tasks: 18 executed, 3 up-to-date 这次的错误都是这一个：undefined reference to ‘localeconv’，解决办法是提高 API Level ，我们把它改为 21 以上就可以解决这个问题。
再次构建，终于不再报错了，结果如下：
Executing tasks: [clean, :app:assembleDebug] 省略一堆Log :app:externalNativeBuildCleanDebug Clean luajit armeabi-v7a Cleaning... 0 files. Clean luajit arm64-v8a Cleaning... 0 files. Clean luajit x86 Cleaning... 0 files. Clean luajit x86_64 Cleaning... 35 files. :app:externalNativeBuildCleanRelease Clean luajit armeabi-v7a Cleaning... 0 files. Clean luajit arm64-v8a Cleaning... 0 files. Clean luajit x86 Cleaning... 0 files. Clean luajit x86_64 Cleaning... 0 files. :app:clean :app:preBuild UP-TO-DATE :app:preDebugBuild :app:compileDebugAidl :app:compileDebugRenderscript :app:checkDebugManifest :app:generateDebugBuildConfig :app:prepareLintJar UP-TO-DATE :app:mainApkListPersistenceDebug :app:generateDebugResValues :app:generateDebugResources :app:mergeDebugResources :app:createDebugCompatibleScreenManifests :app:processDebugManifest :app:splitsDiscoveryTaskDebug :app:processDebugResources :app:generateDebugSources :app:javaPreCompileDebug :app:compileDebugJavaWithJavac :app:generateJsonModelDebug UP-TO-DATE :app:externalNativeBuildDebug Build luajit x86_64 Recompacting log... [1/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lcorolib.c.o [2/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lauxlib.c.o [3/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lbaselib.c.o [4/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lbitlib.c.o [5/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lcode.c.o [6/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lapi.c.o [7/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lctype.c.o [8/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lmathlib.c.o [9/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/liolib.c.o [10/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lfunc.c.o [11/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lmem.c.o [12/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/loadlib.c.o [13/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/linit.c.o [14/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldblib.c.o [15/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lobject.c.o [16/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/llex.c.o [17/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldebug.c.o [18/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lgc.c.o [19/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldo.c.o [20/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldump.c.o [21/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lzio.c.o [22/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstring.c.o [23/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/loslib.c.o [24/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltable.c.o [25/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lundump.c.o [26/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lopcodes.c.o [27/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltm.c.o [28/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstate.c.o [29/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lparser.c.o [30/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltablib.c.o [31/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstrlib.c.o [32/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lutf8lib.c.o [33/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lvm.c.o [34/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lua.c.o [35/35] Linking C shared library ........buildintermediatescmakedebugobjx86_64libluajit.so Build luajit x86 [1/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lcorolib.c.o [2/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lapi.c.o [3/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lbaselib.c.o [4/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lbitlib.c.o [5/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lauxlib.c.o [6/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lcode.c.o [7/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lmem.c.o [8/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/loadlib.c.o [9/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldo.c.o [10/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lctype.c.o [11/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lobject.c.o [12/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/liolib.c.o [13/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/llex.c.o [14/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/linit.c.o [15/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldebug.c.o [16/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lfunc.c.o [17/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lgc.c.o [18/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldblib.c.o [19/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldump.c.o [20/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lmathlib.c.o [21/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lutf8lib.c.o [22/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstate.c.o [23/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lvm.c.o [24/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lzio.c.o [25/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lparser.c.o [26/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstrlib.c.o [27/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltable.c.o [28/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltm.c.o [29/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltablib.c.o [30/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstring.c.o [31/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lopcodes.c.o [32/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lua.c.o [33/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lundump.c.o [34/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/loslib.c.o [35/35] Linking C shared library ........buildintermediatescmakedebugobjx86libluajit.so Build luajit arm64-v8a [1/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lbitlib.c.o [2/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lauxlib.c.o [3/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lbaselib.c.o [4/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lcode.c.o [5/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lcorolib.c.o [6/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lapi.c.o [7/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lfunc.c.o [8/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/liolib.c.o [9/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/linit.c.o [10/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/loadlib.c.o [11/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lobject.c.o [12/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldump.c.o [13/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldebug.c.o [14/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldblib.c.o [15/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldo.c.o [16/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/llex.c.o [17/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lctype.c.o [18/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lmathlib.c.o [19/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lmem.c.o [20/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lgc.c.o [21/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstring.c.o [22/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lvm.c.o [23/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltablib.c.o [24/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lzio.c.o [25/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lua.c.o [26/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstate.c.o [27/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstrlib.c.o [28/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltable.c.o [29/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lutf8lib.c.o [30/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/loslib.c.o [31/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lundump.c.o [32/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lopcodes.c.o [33/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltm.c.o [34/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lparser.c.o [35/35] Linking C shared library ........buildintermediatescmakedebugobjarm64-v8alibluajit.so Build luajit armeabi-v7a [1/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lcorolib.c.o [2/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lbitlib.c.o [3/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lapi.c.o [4/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lauxlib.c.o [5/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lbaselib.c.o [6/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lcode.c.o [7/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldo.c.o [8/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/llex.c.o [9/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldump.c.o [10/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lobject.c.o [11/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/liolib.c.o [12/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lmathlib.c.o [13/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lmem.c.o [14/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/loadlib.c.o [15/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldebug.c.o [16/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lfunc.c.o [17/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ldblib.c.o [18/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lgc.c.o [19/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/linit.c.o [20/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lctype.c.o [21/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lua.c.o [22/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lopcodes.c.o [23/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltm.c.o [24/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/loslib.c.o [25/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lundump.c.o [26/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltable.c.o [27/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstring.c.o [28/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lutf8lib.c.o [29/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lzio.c.o [30/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstate.c.o [31/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lvm.c.o [32/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/ltablib.c.o [33/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lstrlib.c.o [34/35] Building C object CMakeFiles/luajit.dir/src/main/cpp/lparser.c.o [35/35] Linking C shared library ........buildintermediatescmakedebugobjarmeabi-v7alibluajit.so :app:compileDebugSources :app:mergeDebugShaders :app:compileDebugShaders :app:generateDebugAssets :app:mergeDebugAssets :app:transformClassesWithDexBuilderForDebug :app:transformDexArchiveWithExternalLibsDexMergerForDebug :app:transformDexArchiveWithDexMergerForDebug :app:mergeDebugJniLibFolders :app:transformNativeLibsWithMergeJniLibsForDebug :app:transformNativeLibsWithStripDebugSymbolForDebug :app:processDebugJavaRes NO-SOURCE :app:transformResourcesWithMergeJavaResForDebug :app:validateSigningDebug :app:packageDebug :app:assembleDebug BUILD SUCCESSFUL in 20s 33 actionable tasks: 30 executed, 3 up-to-date 再生成 APK，使用 7-ZIP 查看 APK，就可以看到我们 Lua 已经稳妥妥的在 APK 安装包中了，达到 340 KB了，对于 so 库来说也不小了。
至此，Lua 已经编译好了，如果需要使用，还需要写 JNI 方法调用，不过那是后话了。
Github 地址：https://github.com/yahch/Luandroid
原文出处：jianshu -> https://www.jianshu.com/p/b5ebf70f8307
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