在Fedora 38中用自己编译的gcc 12.2替换gcc 13？

Question

我已经将 (

make

+

make install

) 从 gcc 12.2 编译成

/usr/local/gcc12

.

现在

gcc --version

：

gcc (GCC) 13.0.1 20230401 (Red Hat 13.0.1-0)
Copyright (C) 2023 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.

列表

/usr/local/gcc122

：

bin  include  lib  lib64  libexec  share

/usr/local/gcc122/bin

：

drwxr-xr-x. 1 root root       676 Apr 25 22:25 .
drwxr-xr-x. 1 root root        60 Apr 25 22:25 ..
-rwxr-xr-x. 4 root root   5705624 Apr 25 22:25 c++122
-rwxr-xr-x. 1 root root   5701800 Apr 25 22:25 cpp122
-rwxr-xr-x. 4 root root   5705624 Apr 25 22:25 g++122
-rwxr-xr-x. 3 root root   5695360 Apr 25 22:25 gcc122
-rwxr-xr-x. 2 root root    145976 Apr 25 22:25 gcc-ar122
-rwxr-xr-x. 2 root root    145880 Apr 25 22:25 gcc-nm122
-rwxr-xr-x. 2 root root    145888 Apr 25 22:25 gcc-ranlib122
-rwxr-xr-x. 1 root root   5697728 Apr 25 22:25 gcov122
-rwxr-xr-x. 1 root root   3484168 Apr 25 22:25 gcov-dump122
-rwxr-xr-x. 1 root root   3660344 Apr 25 22:25 gcov-tool122
-rwxr-xr-x. 2 root root   5706568 Apr 25 22:25 gfortran122
-rwxr-xr-x. 1 root root 249334728 Apr 25 22:25 lto-dump122
-rwxr-xr-x. 4 root root   5705624 Apr 25 22:25 x86_64-pc-linux-gnu-c++122
-rwxr-xr-x. 4 root root   5705624 Apr 25 22:25 x86_64-pc-linux-gnu-g++122
-rwxr-xr-x. 3 root root   5695360 Apr 25 22:25 x86_64-pc-linux-gnu-gcc122
-rwxr-xr-x. 3 root root   5695360 Apr 25 22:25 x86_64-pc-linux-gnu-gcc-12.2.0
-rwxr-xr-x. 2 root root    145976 Apr 25 22:25 x86_64-pc-linux-gnu-gcc-ar122
-rwxr-xr-x. 2 root root    145880 Apr 25 22:25 x86_64-pc-linux-gnu-gcc-nm122
-rwxr-xr-x. 2 root root    145888 Apr 25 22:25 x86_64-pc-linux-gnu-gcc-ranlib122
-rwxr-xr-x. 2 root root   5706568 Apr 25 22:25 x86_64-pc-linux-gnu-gfortran122

./gcc122 --version

：

gcc122 (GCC) 12.2.0
Copyright (C) 2022 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.

如何正确地将安装的默认 gcc 13 替换为 gcc 12.2 (

/usr/local/gcc12

)（long stage make 后的最后一步）？

重启没有帮助。