Meaning of -DHAVE_CONFIG_H in Makefiles

Posted by Werner on Stack Overflow See other posts from Stack Overflow or by Werner
Published on 2010-03-13T12:17:06Z Indexed on 2010/03/13 12:25 UTC
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makefile

Hi,

I am starting to learn about Makefiles. Looking at the output I see a lot of occurrences of:

g++ -DHAVE_CONFIG_H -I .....

what is "-DHAVE_CONFIG_H" exactly? What is the function of this compilation option?

Thanks

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Developer IT

Meaning of -DHAVE_CONFIG_H in Makefiles - Developer IT

Meaning of -DHAVE_CONFIG_H in Makefiles

makefile

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how to use pkg-config or something equivalent in makefile

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