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cmGlobalNinjaGenerator: only restat build.ninja

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This reduces the work that ninja needs to do on a CMake reconfigure.
This commit is contained in:
Ben Boeckel
2020-01-20 10:42:23 -05:00
parent 5e38b8f608
commit eb2da206d9
1 changed files with 19 additions and 5 deletions
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24
Source/cmGlobalNinjaGenerator.cxx
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@@ -531,11 +531,13 @@ void cmGlobalNinjaGenerator::Generate()
return;
}
auto run_ninja_tool = [this](char const* tool) {
auto run_ninja_tool = [this](std::vector<char const*> const& args) {
std::vector<std::string> command;
command.push_back(this->NinjaCommand);
command.emplace_back("-t");
command.emplace_back(tool);
for (auto const& arg : args) {
command.emplace_back(arg);
}
std::string error;
if (!cmSystemTools::RunSingleCommand(command, nullptr, &error, nullptr,
nullptr,
@@ -551,13 +553,25 @@ void cmGlobalNinjaGenerator::Generate()
};
if (this->NinjaSupportsCleanDeadTool) {
run_ninja_tool("cleandead");
run_ninja_tool({ "cleandead" });
}
if (this->NinjaSupportsUnconditionalRecompactTool) {
run_ninja_tool("recompact");
run_ninja_tool({ "recompact" });
}
if (this->NinjaSupportsRestatTool) {
run_ninja_tool("restat");
// XXX(ninja): We only list `build.ninja` entry files here because CMake
// *always* rewrites these files on a reconfigure. If CMake ever gets
// smarter about this, all CMake-time created/edited files listed as
// outputs for the reconfigure build statement will need to be listed here.
cmNinjaDeps outputs;
this->AddRebuildManifestOutputs(outputs);
std::vector<const char*> args;
args.reserve(outputs.size() + 1);
args.push_back("restat");
for (auto const& output : outputs) {
args.push_back(output.c_str());
}
run_ninja_tool(args);
}
}