1*e4600f7fSJomo# 内核编译配置说明 2*e4600f7fSJomo 3*e4600f7fSJomo## 原理 4*e4600f7fSJomo 5*e4600f7fSJomo  在内核目录下，用kernel.config来设置内核编译配置信息，以类似解析toml文件的方式去解析该文件，然后接着去解析各模块下的d.config以获取feature的启用情况 6*e4600f7fSJomo 7*e4600f7fSJomo## 示例 8*e4600f7fSJomo 9*e4600f7fSJomo**kernel.config** 10*e4600f7fSJomo 11*e4600f7fSJomo```toml 12*e4600f7fSJomo[[module.include]] 13*e4600f7fSJomoname = "init" 14*e4600f7fSJomopath = "src/init/" 15*e4600f7fSJomoenable = "y" 16*e4600f7fSJomodescription = "" 17*e4600f7fSJomo 18*e4600f7fSJomo[[module.include]] 19*e4600f7fSJomoname = "mm" 20*e4600f7fSJomopath = "src/mm/" 21*e4600f7fSJomoenable = "y" 22*e4600f7fSJomodescription = "" 23*e4600f7fSJomo``` 24*e4600f7fSJomo 25*e4600f7fSJomo 26*e4600f7fSJomo- **[[module.include]]:** 将模块加入到include列表中 27*e4600f7fSJomo- **name:** 模块名 28*e4600f7fSJomo- **path:** 模块路径，存放着d.config 29*e4600f7fSJomo- **enable:** 30*e4600f7fSJomo - **y:** 启用，解析模块下的d.config 31*e4600f7fSJomo - **n:** 不启用，不解析 32*e4600f7fSJomo- **description:** 模块的描述信息 33*e4600f7fSJomo 34*e4600f7fSJomo 35*e4600f7fSJomo**src/mm/d.config** 36*e4600f7fSJomo 37*e4600f7fSJomo```toml 38*e4600f7fSJomo[module] 39*e4600f7fSJomoname = "mm" 40*e4600f7fSJomodescription = "" 41*e4600f7fSJomo 42*e4600f7fSJomo[[module.include]] 43*e4600f7fSJomoname = "allocator" 44*e4600f7fSJomopath = "src/mm/allocator/" 45*e4600f7fSJomoenable = "y" 46*e4600f7fSJomodescription = "" 47*e4600f7fSJomo 48*e4600f7fSJomo[[module.features]] 49*e4600f7fSJomoname = "mm_debug" 50*e4600f7fSJomoenable = "y" 51*e4600f7fSJomodescription = "" 52*e4600f7fSJomo``` 53*e4600f7fSJomo 54*e4600f7fSJomo 55*e4600f7fSJomo- **\[module\]:** 当前模块 56*e4600f7fSJomo - **name:** 当前模块名称 57*e4600f7fSJomo - **description:** 模块的描述信息 58*e4600f7fSJomo- **[[module.include]]:** 当前模块下所包含的模块，与kernel.config下的相同 59*e4600f7fSJomo- **[[module.features]]:** 当前模块下的feature 60*e4600f7fSJomo - **name:** feature名 61*e4600f7fSJomo - **enable:** 是否开启 62*e4600f7fSJomo - **y:** 开启 63*e4600f7fSJomo - **n:** 不开启 64*e4600f7fSJomo - **description:** feature的描述信息 65*e4600f7fSJomo 66*e4600f7fSJomo 67*e4600f7fSJomo*以下是其它模块下的d.config：* 68*e4600f7fSJomo 69*e4600f7fSJomo**src/mm/allocator/d.config** 70*e4600f7fSJomo 71*e4600f7fSJomo```toml 72*e4600f7fSJomo[module] 73*e4600f7fSJomoname = "allocator" 74*e4600f7fSJomodescription = "" 75*e4600f7fSJomo 76*e4600f7fSJomo[[module.features]] 77*e4600f7fSJomoname = "allocator_debug" 78*e4600f7fSJomoenable = "y" 79*e4600f7fSJomodescription = "" 80*e4600f7fSJomo``` 81*e4600f7fSJomo 82*e4600f7fSJomo**src/init/d.config** 83*e4600f7fSJomo 84*e4600f7fSJomo```toml 85*e4600f7fSJomo[module] 86*e4600f7fSJomoname = "init" 87*e4600f7fSJomodescription = "" 88*e4600f7fSJomo 89*e4600f7fSJomo[[module.features]] 90*e4600f7fSJomoname = "init_debug" 91*e4600f7fSJomoenable = "y" 92*e4600f7fSJomodescription = "" 93*e4600f7fSJomo``` 94*e4600f7fSJomo 95*e4600f7fSJomo 96*e4600f7fSJomo上面所有已开启模块的d.config中的feature，会最终生成到内核目录下的D.config文件，即D.config是最终内核编译的配置，如下： 97*e4600f7fSJomo 98*e4600f7fSJomo 99*e4600f7fSJomo**D.config** 100*e4600f7fSJomo 101*e4600f7fSJomo``` 102*e4600f7fSJomoinit_debug = y 103*e4600f7fSJomoallocator_debug = y 104*e4600f7fSJomomm_debug = y 105*e4600f7fSJomo```