No problem, always glad to help someone use MacPorts !

On 23/10/2019 10:38 am, Hans Goedbloed wrote:
Thanks!, I now know what to expect and how to fix it.
Hans
________________________________________
From: macports-users <macports-users-boun...@lists.macports.org> on behalf of Chris 
Jones <jon...@hep.phy.cam.ac.uk>
Sent: Wednesday, October 23, 2019 11:30 AM
To: macports-users@lists.macports.org
Subject: Re: executing gcc9 on macOS 10.14

On 23/10/2019 10:23 am, Hans Goedbloed wrote:
The xcrun did work, I do have turn around now!
Thanks for the help, Chris.

I do have macOs 10.14.4 with Xcode 11.0 installed though, Should I change Xcode 
right now or can I wait for the next SDK issue to turn up?

That is up to you. It is just it is known that using Xcode 11 on macOS
10.14 does lead to these sort of SDK issues. They are being ironed out,
slowly, but if you want to just avoid them its best to still to Xcode 10
on 10.14..


Hans

________________________________________
From: macports-users <macports-users-boun...@lists.macports.org> on behalf of Chris 
Jones <jon...@hep.phy.cam.ac.uk>
Sent: Wednesday, October 23, 2019 10:46 AM
To: macports-users@lists.macports.org
Subject: Re: executing gcc9 on macOS 10.14

Another idea.

What Xcode version are you running on mac OS 10.14 ?

If Xcode 11, this is not recommended as it does lead to a lot of SDK
related issues, due to the fact Xcode 11 only has the 10.15 SDK (yes,
even on macOS 10.14).

It is recommended to use Xcode 10 on macOS 10.14.

Chris

On 23/10/2019 9:37 am, Hans Goedbloed wrote:
I updated the ports. looked allright (reply was "nothing to upgrade"), but the 
same problem:
"ld: library not found for -lSystem"

I also checked for the ld64 port and the reply was:
"The following ports are currently installed:
ld64 @3_1+ld64_xcode (active)"

Any other suggestions?

Hans
________________________________________
From: macports-users <macports-users-boun...@lists.macports.org> on behalf of Chris 
Jones <jon...@hep.phy.cam.ac.uk>
Sent: Wednesday, October 23, 2019 10:27 AM
To: macports-users@lists.macports.org
Subject: Re: executing gcc9 on macOS 10.14

Hi,

One other comment. What version of the ld64 port do you have installed ?
If it is not using the xcode variant, then please reinstall in using that

     > port installed ld64
The following ports are currently installed:
      ld64 @3_1+ld64_xcode (active)

if you do not get the above, run

    > sudo port -f uninstall ld64
    > sudo port install ld64

Chris

On 23/10/2019 9:21 am, Chris Jones wrote:
Hi,

( Please always reply to the list )

The error below looks like one we addressed recently. Have you updated
your ports ? Please run

    > sudo port sync
    > sudo port upgrade outdated

then try again.

Chris


On 23/10/2019 9:17 am, Hans Goedbloed wrote:
Thanks Chris,

Looks like what I hoped for: no other tools than gcc9 needed.
However, when I do precisely what you said, I still get

hanss-imac:resabs hansgoedbloed$ gfortran-mp-9 -o test.exe ./test.f
ld: library not found for -lSystem
collect2: error: ld returned 1 exit status

All the libraries listed from your otool command are there, except
/usr/lib/libSystem.B.dylib.
Could that be the problem?

Hans

________________________________________
From: macports-users <macports-users-boun...@lists.macports.org> on
behalf of Chris Jones <jon...@hep.phy.cam.ac.uk>
Sent: Tuesday, October 22, 2019 7:09 PM
To: macports-users@lists.macports.org
Subject: Re: executing gcc9 on macOS 10.14

Hi,

Your ld command is incomplete. You aren't passing any of the runtime
libraries needed to link the .o file into an executable.

The simplest approach is to let gcc do the full job.

Titan ~/Documents/Code > cat test.f
           program hello
               print *, "Hello World!"
           end program hello
Titan ~/Documents/Code > gfortran-mp-9 -o test.exe ./test.f
Titan ~/Documents/Code > ./test.exe
      Hello World!

Titan ~/Documents/Code > otool -L ./test.exe
./test.exe:
            /opt/local/lib/libgcc/libgfortran.5.dylib (compatibility
version 6.0.0,
current version 6.0.0)
            /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
version 1252.200.5)
            /opt/local/lib/libgcc/libgcc_s.1.dylib (compatibility version
1.0.0,
current version 1.0.0)
            /opt/local/lib/libgcc/libquadmath.0.dylib (compatibility
version 1.0.0,
current version 1.0.0)

Chris

On 22/10/2019 5:41 pm, Hans Goedbloed wrote:
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?‚Äč


Hans


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