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make 的时候出现:
make[1]: warning: jobserver unavailable: using -j1. Add `+' to parent make rule
查make手册:
`warning: jobserver unavailable: using -j1. Add `+' to parent make rule.'
In order for make processes to communicate, the parent will pass information to the child. Since this could result in problems if the child process isn't actually a make, the parent will only do this if it thinks the child is a make. The parent uses the normal algorithms to determine this (see How the MAKE Variable Works). If the makefile is constructed such that the parent doesn't know the child is a make process, then the child will receive only part of the information necessary. In this case, the child will generate this warning message and proceed with its build in a sequential manner. 不大好看懂,有大侠帮忙解释下吗? |
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