Скачать или смотреть How to Run a C Program Using GCC on Mac Without Clang

Discover how to compile and run C programs using the `GCC` compiler installed via Homebrew on your Mac, bypassing the default `Clang` compiler.
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This video is based on the question https://stackoverflow.com/q/75353464/ asked by the user 'KABIR Kapoor' ( https://stackoverflow.com/u/20163014/ ) and on the answer https://stackoverflow.com/a/75354130/ provided by the user 'Mark Setchell' ( https://stackoverflow.com/u/2836621/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Run a C Program Using GCC on Mac Without Clang

If you're working on a Mac and have installed GCC using Homebrew, you might encounter some hurdles when trying to compile your C programs without relying on Clang. This post will guide you through the steps of ensuring that your system uses the GCC compiler from Homebrew instead of the default Clang.

Understanding the Problem

When you check your installed versions of GCC and Clang, you may notice they both point to the Clang compiler. This can be problematic, as it doesn't allow you to utilize the GCC features you want. Here’s an example of what you might see when checking versions:

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Despite having installed GCC via Homebrew, your shell defaults to using Clang, as evidenced by the command outputs.

Step-by-Step Solution

Let's break down the solution to ensure that you can use GCC as your compiler:

1. Check Your Current PATH

Your system's PATH environment variable determines the order in which your shell looks for executable files. To see your current PATH, use the following command:

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2. Identify Which GCC is Running

You need to check which version of GCC will be executed when you type gcc. Run:

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This will tell you the path of the gcc command being used. If it shows /usr/bin/gcc, you're using the default Clang.

3. Update Your PATH Variable

To ensure your shell looks for Homebrew binaries first, you need to modify your PATH. Add the following line to your shell's configuration file (e.g., .bash_profile, .zshrc, etc.):

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This change prioritizes any programs installed by Homebrew over system-installed programs like Clang.

4. Verify Your GCC Installation

After updating the PATH, check where GCC is installed with:

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This command will list all the GCC binaries available through Homebrew. You might see something like gcc-11, indicating the version you need to use.

5. Compile Your C Program

Now that you have verified the correct GCC version, compile your C program using the specific GCC version. Replace gcc-11 with the version you found in the previous step:

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Note on C+ + Programs

If you're compiling C+ + files, use g+ + instead:

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Conclusion

By updating your PATH and selecting the correct GCC version, you can successfully compile and run your C programs on your Mac without using Clang. This setup not only allows the use of GCC features but also ensures you have the flexibility in your development environment.

Now you're ready to write and compile your next C program using GCC effortlessly!