Macos – How to test if gcc is installed

cgccmacosxcode

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).

Best Answer

Type gcc at the Terminal prompt. If it says "command not found", you don't. Otherwise, you do.
If that fails, then install from your OSX CD.

Related Solutions

Macports gcc select error trying to exec i686-apple-darwin11-llvm-gcc-4.2

Most likely it is because bash has gcc hashed.

Run

$ hash

to see which commands are hashed. If /usr/bin/gcc appears on the list, run

$ hash gcc

to rehash gcc. Afterwards you should see /opt/local/bin/gcc if you run hash, and running gcc should run the macports version – providing of course that you have selected it.

/B2S

Edit: For zsh users, run $ rehash to refresh the hash in its entirety.

CentOS 7: installed devtoolset-7, but GCC 7.8 is using GCC 4.8 installation’s old C++ include files

Figured it out. cmake was using an old version of gcc/g++, not the one that my command line was picking up when I ran gcc or g++ myself. So, I had to export CC and CXX to the appropriate paths before running cmake.

export CC=/opt/rh/devtoolset-7/root/usr/bin/gcc
export CXX=/opt/rh/devtoolset-7/root/usr/bin/g++
cmake3 -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release ..

Previously, I was only running the last line above.

Best Answer

Related Solutions

Macports gcc select error trying to exec i686-apple-darwin11-llvm-gcc-4.2

CentOS 7: installed devtoolset-7, but GCC 7.8 is using GCC 4.8 installation’s old C++ include files

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