使用 gnumake 和先决条件进行并行构建
我的第一个问题（是的！）是关于 gnumake 和并行构建的。这是一个简单的示例文件：
.PHONY: tool_1 tool_2 tool_3 tool_4 all tools
all: | tools
tools: | tool_2 tool_3 tool_4
tool_1:
# commands for tool 1
tool_2: | tool_1
# commands for tool 2
tool_3: | tool_1
# commands for tool 3
tool_4: | tool_1
# commands for tool 4
如果我对这个家伙执行 make -j ，我在这里所做的就是正确的，以确保 tool_1 的命令恰好执行一次，并且之前make 尝试构建任何 tool_[234]？
我正在寻找的是让 make -j 导致首先构建 tool_1，然后并行构建 tool_[234] ，但不执行 tool_1 的命令三次。我希望这是有道理的。感谢您的任何建议或想法！
My first question (yay!) is about gnumake and parallel builds. Here's a quick example file:
.PHONY: tool_1 tool_2 tool_3 tool_4 all tools
all: | tools
tools: | tool_2 tool_3 tool_4
tool_1:
# commands for tool 1
tool_2: | tool_1
# commands for tool 2
tool_3: | tool_1
# commands for tool 3
tool_4: | tool_1
# commands for tool 4
If I do make -j on this guy, is what I have here correct to ensure that the commands for tool_1 are executed exactly once, and before make tries to build any of tool_[234]?
What I'm looking for is to have make -j cause tool_1 to be built first, then tool_[234] to be built in parallel, but without executing the commands for tool_1 three times. I hope that makes sense. Thanks for any suggestions or ideas!
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
make -j的行为与您在问题中所期望的完全一样。它不会多次产生依赖关系。管道符 (
|) 在依赖项列表中起什么作用？make -jbehaves exactly as you expect in your question. It does not make dependencies multiple times.What does that pipe (
|) character do in your dependency list?