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How can I find out if I have gcc installed on my machine? I am trying to run CodeRunner, but it isn't responding. I know you have to have gcc installed in order for it to work properly. I do have Xcode 4.0.2 installed (from what I've read, if Xcode is installed then you already have gcc).

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Should be on superuser or elsewhere; this isn't a question about programming. – Seth Johnson Apr 30 '11 at 2:30
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migrated from stackoverflow.com Apr 30 '11 at 2:47

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4 Answers

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  1. Type gcc at the Terminal prompt. If it says "command not found", you don't. Otherwise, you do.
  2. If that fails, then install from your OSX CD.
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Technically, that is testing to see if gcc is in his PATH. Typing gcc could fail even if it is installed. – objectiveGeek Apr 30 '11 at 2:31
@objectiveGeek - Yes, but if it's not in his $PATH it's not going to be useful, as most scripts that rely on it being "installed" will probably rely on it also being in $PATH and thus callable as gcc instead of /my/dumb/install/location/gcc – Chris Lutz Apr 30 '11 at 2:33
@Ernest: It gave me 'no input files'. Does this mean its installed. I'm assuming yes? – willis0924 Apr 30 '11 at 2:36
@wilis0924: Yes. Also try gcc -v to get the installed version number. – Drew Hall Apr 30 '11 at 2:37
@Chris Installing gcc under /usr/bin is optional in Xcode’s installer. – Bavarious Apr 30 '11 at 2:38
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up vote 0 down vote

You could just try to see if a gcc executable is present. Try:

ls /usr/bin/gcc*
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Better with whereis gcc or which gcc. – jweyrich Apr 30 '11 at 2:38
which only works if the PATH is correctly configured. – highBandWidth Apr 30 '11 at 2:39
Yet, if you don't have /usr/bin in your PATH, your Mac OS is likely to be broken. – jweyrich Apr 30 '11 at 2:42
If someone messed up the .bash_profile for the particular user, the PATH could be messed up while the system is ok. – highBandWidth Apr 30 '11 at 2:45
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up vote 0 down vote

You can use "locate gcc" to find all filenames with gcc in them.

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up vote 0 down vote

Try any terminal command, like:

$ gcc --help

If gcc isn't installed, you will often see a message with a "how to install it" note, complete with the package manager's command.

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