如何使用Homebrew安装的g++？编译出错寻求技术协助

Hey there, let's dig into why your make command isn't working as expected with the GCC 7.3 you installed via Homebrew. To diagnose this accurately, could you share the following details:

• Exact error output from make: Copy and paste the full error message(s) you see when running the command. Wrap this in triple backticks (```) so it's formatted as code for readability—this will show whether the issue is a missing compiler, a compilation/linking error, or something else entirely.
• Your Makefile content: If it's a small file, include the full text (again, wrapped in code blocks). If it's large, share the relevant sections, especially any lines setting variables like CC, CXX, CFLAGS, or LDFLAGS—these often dictate which compiler make uses.
• Output of echo $PATH: Run this in your terminal and share the result. This will confirm if the path to your Homebrew GCC binaries (e.g., /usr/local/Cellar/gcc/7.3.0/bin) is included in your PATH, and crucially, if it appears before /usr/bin (so your shell prioritizes your installed GCC over the system default).
• Results of which gcc and gcc --version: These commands will tell us which version of GCC your shell is currently pointing to. If it's still the system's default (usually Clang masquerading as GCC), that's likely part of the problem.
• Context on the project you're building: Is this a personal project, or a third-party open-source repo? Are there any specific build instructions you're following, or special dependencies required?

内容的提问来源于stack exchange，提问作者K Lahmers