I have been using g95 for my fortran codes for many years, but it did not work
anymore after upgrading to macOS 10.14 Mojave. I was advised to install gccc9
from MacPorts instead. This I did through "sudo port selfupdate" and "sudo port
install gcc9".
This appeared to give all the required tools. When I then tried to compile and
execute the simplest fortran program test.f (the usual just writing of the
message "Hello") by first compiling
/opt/local/bin/gfortran-mp-9 -v -c test.f
giving the required object file test.o, and then loading:
/opt/local/bin/ld -v test.o
this resulted in the messages
@(#)PROGRAM:ld PROJECT:ld64-512.4
BUILD 05:06:53 Aug 16 2019
configured to support archs: armv6 armv7 armv7s arm64 arm64e arm64_32 i386
x86_64 x86_64h armv6m armv7k armv7m armv7em
Library search paths:
/usr/lib
Framework search paths:
/Library/Frameworks/
/System/Library/Frameworks/
Undefined symbols for architecture x86_64:
"__gfortran_set_args", referenced from:
_main in test.o
"__gfortran_set_options", referenced from:
_main in test.o
"__gfortran_st_write", referenced from:
_MAIN__ in test.o
"__gfortran_st_write_done", referenced from:
_MAIN__ in test.o
ld: symbol(s) not found for architecture x86_64
I thought installation of gcc9 would include everything. How should I fix this??
Hans
