Apple began the transition from Intel processors to Apple silicon (i.e., Apple M1 ARM64) in Mac computers [1]. Thus, the 15-year partnership with Intel is about to be ended [2].
In the other side, Intel introduced Intel oneAPI – an unified and cross-architecture performance programming model [3], without supporting new Apple chips. This challenges developers who need to use Intel Fortran Compiler [4] which only supports products using Intel processors.
A solution just come!
GNU Compiler Collection GCC 12.1 was released on May 6, 2022 [5] that support Fortran compilers on AArch64 (i.e., ARM64) architectures.
How to install GCC 12.1 on macOS M1?
gcc, g++
Open Terminal and check gcc --version, returns clang compiler only.
Install Homebrew, see instruction here.
Check brew version: brew --version.
Install GCC 12.1: brew install gcc@12.
Check GCC 12.1 installation: gcc-12 --version.
Go to its install location: cd /opt/homebrew/bin.
Make soft/symbolic links: ln -s gcc-12 gcc and ln -s g++-12 g++.
Check the gcc and g++ priorities and location: where gcc.
Exit and reinitiate the terminal, type in gcc --version returns the GCC 12.1 version through Homebrew installation.
gfortran-12
Check the version of gfortran: gfortran --version, still point to old version gfortran-11 within gcc-11.
Go to its install location: cd /opt/homebrew/bin.
Make soft/symbolic links: ln -sf gfortran-12 gfortran. The -f option remove existing destination files (if any) before creating the link [6].
References:
[1] https://support.apple.com/en-us/HT211814
[2] https://www.cnbc.com/2020/11/10/why-apple-is-breaking-a-15-year-partnership-with-intel-on-its-macs-.html
[3] https://www.intel.com/content/www/us/en/developer/tools/oneapi/overview.html
[4] https://www.intel.com/content/www/us/en/developer/tools/oneapi/fortran-compiler.html
[5] https://gcc.gnu.org/gcc-12/
[6] https://unix.stackexchange.com/questions/207294/create-symlink-overwrite-if-one-exists
I encountered a problem after the installation in compiling my program antsim.c:
In file included from antsim.c:4:
/opt/homebrew/Cellar/gcc/12.2.0/lib/gcc/current/gcc/aarch64-apple-darwin22/12/include-fixed/stdio.h:78:10: fatal error: _stdio.h: No such file or directory
78 | #include
| ^~~~~~~~~~
compilation terminated.
chuckh@Windom2 Simulation Automation % echo $PATH
/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/Little Snitch.app/Contents/Components:/Library/Apple/usr/bin
What should I do?
Thanks,
Chuck
ln -s gcc-12 gcc
ln -s g++-12 g++
when I am entering these commands it say file exists what should I do now??
what does this step mean: Check the gcc and g++ priorities and location: where gcc.?