Clang環境からGCC環境MacM

Last login: Mon Jun 10 14:36:06 on ttys000
% brew list | grep gcc

~
❯ % brew list | grep gcc                                                                                          15:02
fg: no job control in this shell.

~
❯ % brew list | grep gcc                                                                                          15:02

fg: no job control in this shell.

~
❯ brew list | grep gcc                                                                                            15:02

gcc

~
❯ % ls /usr/local/Cellar | grep gcc                                                                               15:03

fg: no job control in this shell.

~
❯ ls /usr/local/Cellar | grep gcc                                                                                 15:03

ls: /usr/local/Cellar: No such file or directory

~
❯ gcc --version                                                                                                   15:03
Apple clang version 15.0.0 (clang-1500.3.9.4)
Target: arm64-apple-darwin23.5.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

~
❯                                                                                                                 15:03

~
❯ g++ --version                                                                                                   15:03
Apple clang version 15.0.0 (clang-1500.3.9.4)
Target: arm64-apple-darwin23.5.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

~
❯ ls /usr/local/bin | grep gcc                                                                                    15:03

~
❯ cd /opt/homebrew/bin                                                                                            15:03

/opt/homebrew/bin
❯ ls /opt/homebrew/bin | grep gcc                                                                                 15:04
aarch64-apple-darwin23-gcc-14
aarch64-apple-darwin23-gcc-ar-14
aarch64-apple-darwin23-gcc-nm-14
aarch64-apple-darwin23-gcc-ranlib-14
gcc
gcc-14
gcc-ar-14
gcc-nm-14
gcc-ranlib-14

/opt/homebrew/bin
❯ ln -s /opt/homebrew/bin/gcc-14 /usr/local/bin/gcc                                                               15:04

ln: /usr/local/bin/gcc: Permission denied

/opt/homebrew/bin
❯ sudo ln -s /opt/homebrew/bin/gcc-14 /usr/local/bin/gcc                                                          15:05

Password:

/opt/homebrew/bin
❯ sudo ln -s /opt/homebrew/bin/g++-14 /usr/local/bin/g++                                                          15:05

/opt/homebrew/bin
❯ which gcc                                                                                                       15:06
/usr/local/bin/gcc

/opt/homebrew/bin
❯ gcc --version                                                                                                   15:06
gcc (Homebrew GCC 14.1.0_1) 14.1.0
Copyright (C) 2024 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


/opt/homebrew/bin
❯ g++ --version                                                                                                   15:06
g++ (Homebrew GCC 14.1.0_1) 14.1.0
Copyright (C) 2024 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


/opt/homebrew/bin
❯ which gcc                                                                                                       15:07
/usr/local/bin/gcc

/opt/homebrew/bin
❯                      

なんか出来たからヨシっ

考察解説

Homebrewのgcc（/opt/homebrew/bin）とAppleのclang（/usr/bin）がある

Appleのclangが優先されてHomebrewのgccがうんともすんとも言わない

シンボルックリンクを使ってgcc優先する