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xcode - fatal error: limits.h: No such file or directory

On OSX, I can't compile simple programs from the command-line when I use an externally-provided compiler (e.g. gcc, or a custom clang install). System headers like limits.h cannot be found.

Example error messages:

fatal error: limits.h: No such file or directory

Or:

fatal error: stdio.h: No such file or directory

Or:

fatal error: 'stdlib.h' file not found

and so on.

What's wrong?

See Question&Answers more detail:os

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1 Answer

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by (71.8m points)

Make sure you've installed the xcode command-line tools:

xcode-select --install

(Accept the pop-up dialog.)

That will install system headers into standard locations expected by tools like gcc, e.g. /usr/include.


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