{"id":315,"date":"2022-02-07T22:45:44","date_gmt":"2022-02-07T14:45:44","guid":{"rendered":"https:\/\/www.fanyamin.com\/wordpress\/?p=315"},"modified":"2022-03-19T20:57:22","modified_gmt":"2022-03-19T12:57:22","slug":"ninja-%e5%8f%88%e4%b8%80%e4%b8%aac%e6%9e%84%e5%bb%ba%e5%b7%a5%e5%85%b7","status":"publish","type":"post","link":"https:\/\/www.fanyamin.com\/wordpress\/?p=315","title":{"rendered":"\u7528 Ninja and GN \u6765\u52a0\u901f C++\u6784\u5efa"},"content":{"rendered":"

Ninja<\/h1>\n

Ninja \u539f\u610f\u662f\u5fcd\u8005\u7684\u610f\u601d\uff0c\u5b83\u662f\u4e00\u4e2a\u4e13\u6ce8\u4e8e\u901f\u5ea6\u7684\u5c0f\u578b\u6784\u5efa\u5de5\u5177\u3002\u5b83\u662f\u4e00\u4e2a\u6784\u5efa\u7cfb\u7edf\u3002 \u5b83\u5c06\u6587\u4ef6\u7684\u76f8\u4e92\u4f9d\u8d56\u5173\u7cfb\uff08\u901a\u5e38\u662f\u6e90\u4ee3\u7801\u548c\u8f93\u51fa\u53ef\u6267\u884c\u6587\u4ef6\uff09\u4f5c\u4e3a\u8f93\u5165\uff0c\u5e76\u5feb\u901f\u7f16\u6392\u6784\u5efa\u5b83\u4eec\u3002<\/p>\n

\u8fd0\u884cNinja\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5b83\u4f1a\u5728\u5f53\u524d\u76ee\u5f55\u4e2d\u67e5\u627e\u540d\u4e3a build.ninja \u7684\u6587\u4ef6\u5e76\u6784\u5efa\u6240\u6709\u8fc7\u65f6\u7684\u76ee\u6807\u3002 \u60a8\u53ef\u4ee5\u6307\u5b9a\u8981\u6784\u5efa\u7684\u76ee\u6807\uff08\u6587\u4ef6\uff09\u4f5c\u4e3a\u547d\u4ee4\u884c\u53c2\u6570\u3002<\/p>\n

\u8fd8\u6709\u4e00\u4e2a\u7279\u6b8a\u7684\u8bed\u6cd5 target^ \u7528\u4e8e\u5c06\u76ee\u6807\u6307\u5b9a\u4e3a\u67d0\u4e2a\u89c4\u5219\u7684\u7b2c\u4e00\u4e2a\u8f93\u51fa\uff0c\u5176\u4e2d\u5305\u542b\u60a8\u5728\u547d\u4ee4\u884c\u4e2d\u8f93\u5165\u7684\u6e90\uff08\u5982\u679c\u5b58\u5728\uff09\u3002 \u4f8b\u5982\uff0c\u5982\u679c\u60a8\u5c06\u76ee\u6807\u6307\u5b9a\u4e3a foo.c^\uff0c\u90a3\u4e48 foo.o \u5c06\u88ab\u6784\u5efa\uff08\u5047\u8bbe\u60a8\u7684\u6784\u5efa\u6587\u4ef6\u4e2d\u6709\u8fd9\u4e9b\u76ee\u6807\uff09\u3002<\/p>\n

\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u4e0d\u9700\u8981\u624b\u5199 ninja \u6587\u4ef6\uff0c\u901a\u8fc7 gn \u6216 cmake \u6765\u63cf\u8ff0\u9879\u76ee\u7ed3\u6784\u548c\u4f9d\u8d56\u5173\u7cfb\uff0c\u518d\u901a\u8fc7\u5b83\u4eec\u6765\u751f\u6210 build.ninja \u6587\u4ef6<\/p>\n

\u8be6\u89c1Ninja \u624b\u518c - https:\/\/ninja-build.org\/manual.html<\/a>\uff0c<\/p>\n

Example<\/h1>\n

byteorder.c<\/h2>\n
#include <stdio.h>\n\nint main(int argc, char **argv)\n{\n    union {\n        short s;\n        char c[sizeof(short)];\n    }un;\n    un.s = 0x0102;\n\n    if (sizeof(short) == 2) {\n        if (un.c[0] == 1 && un.c[1] == 2)\n            printf("big-endian\\n");\n        else if (un.c[0] == 2 && un.c[1] == 1)\n            printf("little-endian\\n");\n        else\n            printf("unknown\\n");\n   } else{\n        printf("sizeof(short) = %ld\\n", sizeof(short));\n   }\n\n   return 0;\n}\n<\/code><\/pre>\n
build.ninja<\/h2>\n
cflags = -Wall\n\nrule cc\n  command = gcc $cflags -c $in -o $out\n\nbuild byteorder.o: cc byteorder.c<\/code><\/pre>\n
\u53ef\u4ee5\u901a\u8fc7 ninja -C build -j 20 <\/code> \u6765\u6784\u5efa<\/p>\n
gn<\/h1>\n
\u987e\u540d\u601d\u4e49\uff0cGN is \u201cGenerate Ninja\u201d \u4e00\u4e2a\u7528\u6765\u751f\u6210 Ninja \u7684\u5de5\u5177<\/p>\n
\u7528\u4e8e\u4e3a Google Chrome \u548c\u76f8\u5173\u9879\u76ee\uff08v8\u3001node.js\uff09\u4ee5\u53ca Google Fuchsia \u751f\u6210\u6784\u5efa\u6587\u4ef6\u7684\u5143\u6784\u5efa\u7cfb\u7edf\u3002 gn \u53ef\u4ee5\u4e3a Chrome \u652f\u6301\u7684\u6240\u6709\u5e73\u53f0\u751f\u6210 Ninja \u6587\u4ef6\u3002<\/p>\n
GN \u6709\u81ea\u5df1\u5b9a\u4e49\u7684\u4e00 \u5957\u6bd4\u8f83\u7b80\u5355\u7684\u63cf\u8ff0\u6027\u8bed\u8a00\uff0c\u8be6\u89c1 https:\/\/gn.googlesource.com\/gn\/+\/main\/docs\/language.md<\/a><\/p>\n
GN \u4e2d\u6709\u4e09\u4e2a\u91cd\u8981\u7684\u6587\u4ef6<\/p>\n
    \n
  1. .gn<\/code><\/li>\n<\/ol>\n
    \u5b83\u5b9a\u4e49\u4e86 GN \u6784\u5efa\u6811\u7684\u6839\u8282\u70b9<\/p>\n
    \u8be6\u89c1\u547d\u4ee4 \u201cgn help dotfile\u201d<\/p>\n
      \n
    1. \/\/build\/config\/BUILDCONFIG.gn<\/code><\/li>\n<\/ol>\n
      Exact location defined by \u201c.gn\u201d file
      \nSets up global variables and default settings<\/p>\n
        \n
      1. BUILD.gn<\/code>
        \n\u63cf\u8ff0\u4e86\u6784\u5efa\u76ee\u6807\uff0c\u6e90\u7801\u6587\u4ef6\uff0c\u53ca\u5176\u4f9d\u8d56\u5173\u7cfb\u7b49<\/li>\n<\/ol>\n
        gn args<\/h2>\n
        \u8fd9\u4e2a\u5de5\u5177\u6709\u4e24\u4e2a\u4f5c\u7528\uff0c\u4e00\u662f\u751f\u6210.ninja\u7f16\u8bd1\u914d\u7f6e\u6587\u4ef6\uff0c\u4e8c\u662f\u67e5\u770b\u5f53\u524d\u7f16\u8bd1\u7684\u6240\u6709\u6807\u8bb0\u9879\u3002<\/p>\n
        \u751f\u6210.ninja<\/h3>\n
        \u8fd9\u4e2a\u5de5\u5177\u7ed9\u7528\u6237\u63d0\u4f9b\u4e00\u4e2a\u63a5\u53e3\uff0c\u6765\u5bf9\u6784\u5efa\u8fdb\u884c\u6574\u4f53\u7684\u914d\u7f6e\u3002\u5982\u5728Chromium Android\u7f16\u8bd1\u6307\u5357\u4e2d\uff0c\u4e3aAndroid\u7248chromium\u505a\u7f16\u8bd1\u914d\u7f6e\u65f6\uff0c\u6240\u6267\u884c\u7684\u547d\u4ee4\uff1a<\/p>\n
        gn args out\/Default<\/code><\/pre>\n
        \u53c2\u6570\u662foutput\u76ee\u5f55\u8def\u5f84\u3002\u8fd9\u4e2a\u547d\u4ee4\u542f\u52a8\u7cfb\u7edf\u9ed8\u8ba4\u7684\u7f16\u8f91\u5668\uff0c\u521b\u5efaout\/Default\/args.gn\u6587\u4ef6\uff0c\u6211\u4eec\u5728\u7f16\u8f91\u5668\u4e2d\u52a0\u5165\u6211\u4eec\u81ea\u5df1\u7279\u5b9a\u7684\u914d\u7f6e\u9879\uff0c\u5982\uff1a<\/p>\n
        target_os = "android"\ntarget_cpu = "arm"  # (default)\nis_debug = true  # (default)\n# Other args you may want to set:\nis_component_build = true\nis_clang = true\nsymbol_level = 1  # Faster build with fewer symbols. -g1 rather than -g2\nenable_incremental_javac = true  # Much faster; experimental<\/code><\/pre>\n
        gn\u6839\u636e\u521b\u5efa\u5f97\u8fd9\u4e2aout\/Default\/args.gn\u6587\u4ef6\u7684\u5185\u5bb9\u6765\u4ea7\u751fninja\u6587\u4ef6\u3002<\/p>\n
        \u67e5\u770b\u5f53\u524d\u7f16\u8bd1\u7684\u6240\u6709\u6807\u8bb0\u9879<\/h3>\n
        \u8fd9\u4e2a\u5de5\u5177\u8fd8\u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u7f16\u8bd1\u7684\u6240\u6709\u6807\u8bb0\u914d\u7f6e\u9879\u3002chromium\u4e2d\u7528\u5230\u4e86\u8bb8\u8bb8\u591a\u591a\u7684\u6807\u8bb0\u9879\uff0c\u5bf9\u4e8e\u8fd9\u4e9b\u6807\u8bb0\u9879\u4e2d\u7684\u8bb8\u591a\u9879\uff0c\u5373\u4f7f\u7528\u6237\u4e0d\u8fdb\u884c\u914d\u7f6e\uff0cchromium\u7684\u7f16\u8bd1\u7cfb\u7edf\u4e5f\u4f1a\u63d0\u4f9b\u9ed8\u8ba4\u7684\u914d\u7f6e\u3002\u4e86\u89e3\u5230\u5f53\u524d\u7f16\u8bd1\u7684\u6240\u6709\u6807\u8bb0\u914d\u7f6e\u9879\uff0c\u5bf9\u4e8e\u6211\u4eec\u4e86\u89e3\u5b9e\u9645\u7f16\u8bd1\u65f6\u6240\u7528\u7684\u7f16\u8bd1\u53c2\u6570\u975e\u5e38\u91cd\u8981\u3002<\/p>\n
        \u5bf9\u4e8e\u4e0a\u9762\u8f93\u5165\u7684\u53c2\u6570\uff0c\u4ea7\u751f\u7684\u6574\u4e2a\u7f16\u8bd1\u914d\u7f6e\u73af\u5883\u4e2d\uff0c\u6240\u6709\u7684\u6807\u8bb0\u914d\u7f6e\u9879\u5982\u4e0b\uff1a<\/p>\n
        $gn args --list out\/Default\/<\/code><\/pre>\n
        gn gen<\/h2>\n
        usage:  gn gen [] 
        \n\u8fd9\u4e2a\u5de5\u5177\u6839\u636e\u5f53\u524d\u7684\u4ee3\u7801\u6811\u53ca\u914d\u7f6e\uff0c\u4ea7\u751fninja\u6587\u4ef6\uff0c\u5e76\u628a\u5b83\u4eec\u653e\u5728\u7ed9\u5b9a\u5f97\u76ee\u5f55\u4e0b\u3002\u8f93\u51fa\u76ee\u5f55\u53ef\u4ee5\u662f\u6e90\u7801\u5e93\u7684\u7edd\u5bf9\u5730\u5740\uff0c\u6bd4\u5982\/\/out\/foo\uff0c\u4e5f\u53ef\u4ee5\u662f\u76f8\u5bf9\u4e8e\u5f53\u524d\u76ee\u5f55\u7684\u5730\u5740\uff0c\u5982\uff1aout\/foo\u3002 \u4e0a\u9762\u7684gn args \u7b49\u4ef7\u4e8e\uff0c\u5728\u542f\u52a8\u7f16\u8f91\u5668\u7f16\u8f91\u53c2\u6570\uff0c\u5728\u7f16\u8f91\u5668\u7f16\u8f91\u4e86\u53c2\u6570\u9000\u51fa\u4e4b\u540e\uff0c\u6267\u884cgn gen \u3002<\/p>\n
        gn clean<\/h2>\n
        usage:  gn clean <\/p>\n
        \u8fd9\u4e2a\u547d\u4ee4\u7528\u4e8e\u5bf9\u5386\u53f2\u7f16\u8bd1\u8fdb\u884c\u6e05\u7406\u3002\u5b83\u4f1a\u5220\u9664\u8f93\u51fa\u76ee\u5f55\u4e0b\u9664\u4e86args.gn\u5916\u5f97\u5185\u5bb9\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u53ef\u4ee5\u91cd\u65b0\u4ea7\u751f\u6784\u5efa\u914d\u7f6e\u7684Ninja\u6784\u5efa\u73af\u5883\u3002<\/p>\n
        gn desc<\/h2>\n
        usage:  gn desc  
        \u663e\u793a\u5173\u4e8e\u4e00\u4e2a\u7ed9\u5b9atarget\u6216config\u7684\u4fe1\u606f\u3002\u6784\u5efa\u53c2\u6570\u53d6\u81ea\u7ed9\u51fa\u7684\u3002
        \u5982\u6211\u4eec\u8981\u67e5\u770b webrtc \u4e2d gcc \u6a21\u5757\u76f8\u5173\u5f97\u6240\u6709\u4fe1\u606f\uff1a<\/p>\n
        $ gn desc out\/Default \/\/modules\/congestion_controller\/goog_cc --tree<\/code><\/pre>\n
        gn ls<\/h2>\n
        usage: gn ls  [] [--all-toolchains] [--as=...] [--type=...] [--testonly=...]
        \n\u8fd9\u4e2a\u547d\u4ee4\u5c55\u793a\u7ed9\u5b9a\u8f93\u51fa\u76ee\u5f55\u4e0b\uff0c\u6ee1\u8db3\u67d0\u4e2a\u6a21\u5f0f\u7684\u6240\u6709\u7684targets\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u53ea\u663e\u793a\u9ed8\u8ba4\u5de5\u5177\u94fe\u7684target\u4f1a\u88ab\u5339\u914d\uff0c\u9664\u975e\u660e\u786e\u5730\u63d0\u4f9b\u4e86\u5de5\u5177\u94fe\u53c2\u6570\u3002\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u6807\u7b7e\u53c2\u6570\uff0c\u5219\u663e\u793a\u6240\u6709\u7684targets\u3002\u6a21\u5f0f\u4e0d\u662f\u5e38\u89c4\u7684\u6b63\u5219\u8868\u8fbe\u5f0f(\u53ef\u4ee5\u53c2\u8003"gn help label_pattern")\u3002<\/p>\n
        $ gn ls out\/Default "\/\/modules\/congestion_controller\/*"\n\/\/modules\/congestion_controller:congestion_controller\n\/\/modules\/congestion_controller:congestion_controller_unittests\n\/\/modules\/congestion_controller\/goog_cc:alr_detector\n\/\/modules\/congestion_controller\/goog_cc:delay_based_bwe\n\/\/modules\/congestion_controller\/goog_cc:estimators\n\/\/modules\/congestion_controller\/goog_cc:goog_cc\n\/\/modules\/congestion_controller\/goog_cc:goog_cc_unittests\n\/\/modules\/congestion_controller\/goog_cc:link_capacity_estimator\n\/\/modules\/congestion_controller\/goog_cc:loss_based_bwe_v1\n\/\/modules\/congestion_controller\/goog_cc:loss_based_bwe_v2\n\/\/modules\/congestion_controller\/goog_cc:probe_controller\n\/\/modules\/congestion_controller\/goog_cc:pushback_controller\n\/\/modules\/congestion_controller\/goog_cc:send_side_bwe\n\/\/modules\/congestion_controller\/goog_cc:test_goog_cc_printer\n\/\/modules\/congestion_controller\/pcc:bitrate_controller\n\/\/modules\/congestion_controller\/pcc:monitor_interval\n\/\/modules\/congestion_controller\/pcc:pcc\n\/\/modules\/congestion_controller\/pcc:pcc_controller\n\/\/modules\/congestion_controller\/pcc:pcc_unittests\n\/\/modules\/congestion_controller\/pcc:rtt_tracker\n\/\/modules\/congestion_controller\/pcc:utility_function\n\/\/modules\/congestion_controller\/rtp:congestion_controller_unittests\n\/\/modules\/congestion_controller\/rtp:control_handler\n\/\/modules\/congestion_controller\/rtp:transport_feedback<\/code><\/pre>\n
        gn check<\/h2>\n
        gn check  [] [--force]
        \n\u8fd9\u4e2a\u5de5\u5177\u53ef\u4ee5\u7528\u6765\u68c0\u67e5\u5934\u6587\u4ef6\u4f9d\u8d56\u5173\u7cfb\u5f97\u6709\u6548\u6027\u3002<\/p>\n
        $ gn check out\/Default\/ net\nHeader dependency check OK<\/code><\/pre>\n
        gn help<\/h2>\n
        \u5c55\u793a\u5e2e\u52a9\u4fe1\u606f\uff0c\u53ef\u4ee5\u7528\u6765\u83b7\u53d6\u5173\u4e8e\u4e0a\u9762\u6240\u6709\u7684gn\u547d\u4ee4\uff0c\u53ca\u5185\u7f6e\u5f97targets\uff0c\u5185\u5efa\u5f97\u9884\u5b9a\u4e49\u53d8\u91cf\u7684\u6240\u6709\u76f8\u5173\u4fe1\u606f\u3002\u5982\uff1a<\/p>\n
        $ gn help<\/code><\/pre>\n
        \u81ea CMake \u7248\u672c 2.8.8 \u8d77\uff0c\u53ef\u4ee5\u5728 Linux \u4e0a\u751f\u6210 Ninja \u6587\u4ef6\u7684\u5e7f\u6cdb\u4f7f\u7528\u7684\u5143\u6784\u5efa\u7cfb\u7edf\u3002 \u8f83\u65b0\u7248\u672c\u7684 CMake \u4e5f\u652f\u6301\u5728 Windows \u548c Mac OS X \u4e0a\u751f\u6210 Ninja \u6587\u4ef6\u3002<\/p>\n
        \u901a\u8fc7 GN \u6765\u751f\u6210 build.ninja<\/h2>\n
        \u4ee5 GN \u4e2d\u6240\u81ea\u5e26\u7684\u4f8b\u5b50 simple build<\/a> \u4e3a\u4f8b<\/p>\n