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c++eclipseqtmulticorenmake

How do I utilise all the cores for nmake?

I just got a new quad core computer and noticed that nmake is only using 1 process.

I used to use make which had the switch -j4 for launching 4 processes. What is the nmake equivalent?

[edit] Based on the information below I have been able to add a command to my qmake project file:

QMAKE_CXXFLAGS += /MP

Which effectively did it for me. Many thanks.

Solution

  • According to MSDN, there's no such option for nmake.

    You can however make the compiler build multiple files in parallel by using the /MP option with the VC++ command line compiler and passing multiple files at the same time:

    > cl /MP a.cpp b.cpp c.cpp

    However note that most Makefiles don't call the compiler like this - they usual invoke the compiler separate for each individual source file, which would prevent the /MP option from doing anything useful.