Install FLUKA4-1.0 on Mac OS Catalina with gfortran-10 from homebrew

Installation
1

Dear developers,

I am new to FLUKA and am trying to install the latest release on my personal Macbook (Catalina) using gfortran-10 (from homebrew).

❯ which gfortran
/usr/local/bin/gfortran
❯ /usr/local/bin/gfortran --version
GNU Fortran (Homebrew GCC 10.2.0) 10.2.0
Copyright (C) 2020 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.

As instructed in https://fluka.cern/documentation/installation/fluka-linux-macos
I am in the directory of

❯ pwd
/Users/yz/Documents/fluka4-1.0/src

and use the command make -j 4.
But I got this error message:

...
gfortran -c -o usrsuwev.o -I/Users/yz/Documents/fluka4-1.0//include -J/Users/yz/Documents/fluka4-1.0//include -g -O3 -fd-lines-as-comments -Wall -Waggregate-return -Wcast-align -Wline-truncation -Wno-conversion -Wno-integer-division -Wno-tabs -Wno-unused-dummy-argument -Wno-unused-function -Wno-unused-parameter -Wno-unused-variable -Wsystem-headers -Wuninitialized -Wunused-label -mtune=generic -msse2 -mfpmath=sse -fPIC -fexpensive-optimizations -funroll-loops -fstrength-reduce -fno-automatic -finit-local-zero -ffixed-line-length-132 -fbackslash -funderscoring -frecord-marker=4 -falign-commons -fbacktrace -frange-check -fbounds-check -fdump-core -ftrapping-math -ffpe-trap=invalid,zero,overflow  usrsuwev.f
gcc -c -o usbmax.o -I/Users/yz/Documents/fluka4-1.0//include -g -O3 -Wpadded -Wpacked -malign-double -mpreferred-stack-boundary=8 usbmax.c
clang: error: unknown argument: '-mpreferred-stack-boundary=8'
make[1]: *** [usbmax.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [tools] Error 2

I searched it in this user forum a little bit but didn’t find a related answer, so I am posting a new one.

Thanks in advance!
Best,
Yao

3

Dear Yao,

it seems, that gcc command doesn’t call the gcc installed from MacPorts, but clang.

Did you run the following command during the installation?

sudo port select --set gcc mp-gcc10

Cheers,
David

P.S.: You may have to run the make clean command before you try to compile again.

4

Dear David,

Thanks for the timely reply.
As I mentioned, I am now using homebrew, not MacPorts.
And I also find it strange that a clang-related message appears.

❯ which gcc
gcc: aliased to gcc-10
❯ gcc --version
gcc-10 (Homebrew GCC 10.2.0) 10.2.0
Copyright (C) 2020 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.

Do you have any ideas how I should get rid of clang besides using MacPorts?
As far as I know, I shouldn’t use MacPorts and Homebrew at the same time, no?

Best,
Yao

5

Dear Yao,

sorry I missed that you are using Homebrew.

The issue is the alias you set is it not used by the makefile.

You could try to create a symbolic link instead. See: https://apple.stackexchange.com/questions/245891/installed-gcc-with-homebrew-now-how-to-use-that-gcc-instead-of-clang

Cheers,
David

1 Like
6

Dear David,

Thanks for the information.
And the compilation now works fine!

I guess the alias I use before only works when I directly use gcc, but not for the makefile.

Thanks again and best wishes,
Yao