Android打包,通过命令行来控制CC++宏

it2023-05-22  67

参数传递流程

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.edge-pattern-dashed{stroke-dasharray:3}#mermaid-svg-dfBmdEZpofK3sXlw .edge-pattern-dotted{stroke-dasharray:2}#mermaid-svg-dfBmdEZpofK3sXlw .marker{fill:#333}#mermaid-svg-dfBmdEZpofK3sXlw .marker.cross{stroke:#333} :root { --mermaid-font-family: "trebuchet ms", verdana, arial;} #mermaid-svg-dfBmdEZpofK3sXlw { color: rgba(0, 0, 0, 0.75); font: ; } 构建命令行带有参数 解析参数 参数转为CMakeList参数 CMakeList控制宏是否存在 命令行 gradle gradle CMakeList C++

实现

gradle对命令行参数的响应

Android默认的C++构建方式

在默认的Android构建方式时,是支持debug类型,构建debug包时:./gradlew assembleDebug

对于C++构建配置如下:

android { buildTypes { release { minifyEnabled false } debug { externalNativeBuild { cmake{ arguments '-DCMAKE_BUILD_TYPE=DEBUG' } } } } externalNativeBuild { cmake { path "./src/CMakeLists.txt" } } packagingOptions { // exclude 'lib/*/libc++_shared.so' doNotStrip "**.so" } }

只需在debug类型下,加入自定义的一个参数CMAKE_BUILD_TYPE,那么这个参数就能传入CMakeList。

自定义的打包任务

自定义的,不符合Android默认规则的gradle任务,需要自定义一个参数: 假设如下:./gradlew assembleRelease -PcppDebug

那么gradle如下:

def cppDebug = project.hasProperty('cppDebug') // 自定义C++构建时,传入参数 arguments '-DCMAKE_BUILD_TYPE=' + (cppDebug ? 'DEBUG' : 'RELEASE')

CMakeList接受参数,生成代码内的宏

# debugif (CMAKE_BUILD_TYPE STREQUAL DEBUG) message('当前编译开启了DEBUG宏!!!') add_definitions(-DDEBUG) endif ()

C++代码文件内使用宏

#ifdef DEBUG // 配置了debug,就会输出日志 #pragma message("Warning:debug编译时!") #endif
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