libSystem not found using gfortran

[Chris Jones]

On 11/10/2019 1:41 pm, Guillaume Houzeaux @ BSC wrote:
> Chris, thanks a lot for your very quick answer!
> 
> 1. I followed the path for migration and reinstalled all packages. I 
> will try to do it once more to be sure.
> 2. Xcode version: 11.0

Please update to 11.1. 11.0 indeed has a number of issues since fixed.

> Reading specs from 
> /opt/local/lib/gcc9/gcc/x86_64-apple-darwin18/9.2.0/../../../libgfortran.spec
> rename spec lib to liborig
> COLLECT_GCC_OPTIONS='-v' '-mmacosx-version-min=10.15.0' '-shared-libgcc' 
> '-mtune=core2'
> COMPILER_PATH=/opt/local/libexec/gcc/x86_64-apple-darwin18/9.2.0/:/opt/local/libexec/gcc/x86_64-apple-darwin18/9.2.0/:/opt/local/libexec/gcc/x86_64-apple-darwin18/:/opt/local/lib/gcc9/gcc/x86_64-apple-darwin18/9.2.0/:/opt/local/lib/gcc9/gcc/x86_64-apple-darwin18/
> LIBRARY_PATH=/usr/lib/:/opt/local/lib/gcc9/gcc/x86_64-apple-darwin18/9.2.0/:/opt/local/lib/gcc9/gcc/x86_64-apple-darwin18/9.2.0/../../../
> COLLECT_GCC_OPTIONS='-v' '-mmacosx-version-min=10.15.0' '-shared-libgcc' 
> '-mtune=core2'
>   /opt/local/libexec/gcc/x86_64-apple-darwin18/9.2.0/collect2 
> -syslibroot 
> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/ 
> -dynamic -arch x86_64 -macosx_version_min 10.15.0 
> -weak_reference_mismatches non-weak -o a.out 
> -L/opt/local/lib/gcc9/gcc/x86_64-apple-darwin18/9.2.0 
> -L/opt/local/lib/gcc9/gcc/x86_64-apple-darwin18/9.2.0/../../.. 
> /var/folders/1z/j0r1q88d2_95cj4fd50r39mr0000gr/T//cce0rRJI.o -lgfortran 
> -no_compact_unwind -lSystem -lgcc_ext.10.5 -lgcc -lquadmath -lm 
> -lgcc_ext.10.5 -lgcc -lSystem -v
> collect2 version 9.2.0
> /opt/local/bin/ld -syslibroot 
> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/ 

This I think is your problem. You are using the 10.14 SDK, not the 10.15 
one. Does

/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk

even exist on your system ? I guess not.

Chris

> -dynamic -arch x86_64 -macosx_version_min 10.15.0 
> -weak_reference_mismatches non-weak -o a.out 
> -L/opt/local/lib/gcc9/gcc/x86_64-apple-darwin18/9.2.0 
> -L/opt/local/lib/gcc9/gcc/x86_64-apple-darwin18/9.2.0/../../.. 
> /var/folders/1z/j0r1q88d2_95cj4fd50r39mr0000gr/T//cce0rRJI.o -lgfortran 
> -no_compact_unwind -lSystem -lgcc_ext.10.5 -lgcc -lquadmath -lm 
> -lgcc_ext.10.5 -lgcc -lSystem -v
> @(#)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:
>      /opt/local/lib/gcc9/gcc/x86_64-apple-darwin18/9.2.0
>      /opt/local/lib/gcc9
> Framework search paths:
> ld: library not found for -lSystem
> collect2: error: ld returned 1 exit status
> 
> 
>>
>> one more request.
>>
>> please post the full output from compiling your test code with the -v 
>> option.
>>
>> cheers Chris
>>
>> On 11/10/2019 12:59 pm, Chris Jones wrote:
>>>
>>> can you please direct us to the exact test application code you are 
>>> using ?
>>>
>>> Also, can you confirm the exact Xcode version you are using ?
>>>
>>> Have you correctly followed the macports migration guide after 
>>> updating your OS ?
>>>
>>> https://trac.macports.org/wiki/Migration
>>>
>>> cheers Chris
>>>
>>> On 11/10/2019 12:55 pm, Guillaume Houzeaux @ BSC wrote:
>>>> Hello,
>>>>
>>>> I'm compiling with gfortran9 on catalina and get this error:
>>>>
>>>> gfortran test.f90
>>>> ld: library not found for -lSystem
>>>> collect2: error: ld returned 1 exit status
>>>>
>>>> Seems that it does not find the library libSystem. I changed all the 
>>>> library paths in my bash_profile
>>>>
>>>> to include /usr/lib but does not work. The only solution for the 
>>>> moment is to compile with
>>>>
>>>> gfortran test.f90-L/usr/lib
>>>>
>>>> but this is not a practical option... Any idea on how to fix this?
>>>>
>>>> Thanks in advance
>>>>
>>>> -- 
>>>> Guillaume Houzeaux
>>>> Team Leader
>>>> Dpt. Computer Applications in Science and Engineering
>>>> Barcelona Supercomputing Center (BSC-CNS)
>>>> Edificio NEXUS II - Office 3A, c) Jordi Girona 29
>>>> 08034 Barcelona, Spain
>>>>
>>>> Location: 
>>>> <https://www.google.es/maps/place/Carrer+de+Jordi+Girona,+08034+Barcelona/@41.3881175,2.1132195,17z/data=!3m1!4b1!4m8!1m2!10m1!1e2!3m4!1s0x12a4985099390467:0xd9abcf1987739b3e!8m2!3d41.3881175!4d2.1154135?hl=en> 
>>>>
>>>> Tel: +34 93 413 7781
>>>> Skype user: guillaume_houzeaux_bsc
>>>> WWW: BSC profile <https://www.bsc.es/houzeaux-guillaume>
>>>> ResearcherID: D-4950-2012
>>>> Scientific Profile: 
>>>> <https://www.researchgate.net/profile/Guillaume_Houzeaux> 
>>>> <http://scholar.google.es/citations?user=cL9khdYAAAAJ&hl=en> 
>>>> <http://orcid.org/0000-0002-2592-1426> 
>>>> <http://www.researcherid.com/rid/D-4950-2012>
>>>>
> 
> -- 
> Guillaume Houzeaux
> Team Leader
> Dpt. Computer Applications in Science and Engineering
> Barcelona Supercomputing Center (BSC-CNS)
> Edificio NEXUS II - Office 3A, c) Jordi Girona 29
> 08034 Barcelona, Spain
> 
> Location: 
> <https://www.google.es/maps/place/Carrer+de+Jordi+Girona,+08034+Barcelona/@41.3881175,2.1132195,17z/data=!3m1!4b1!4m8!1m2!10m1!1e2!3m4!1s0x12a4985099390467:0xd9abcf1987739b3e!8m2!3d41.3881175!4d2.1154135?hl=en> 
> 
> Tel: +34 93 413 7781
> Skype user: guillaume_houzeaux_bsc
> WWW: BSC profile <https://www.bsc.es/houzeaux-guillaume>
> ResearcherID: D-4950-2012
> Scientific Profile: 
> <https://www.researchgate.net/profile/Guillaume_Houzeaux> 
> <http://scholar.google.es/citations?user=cL9khdYAAAAJ&hl=en> 
> <http://orcid.org/0000-0002-2592-1426> 
> <http://www.researcherid.com/rid/D-4950-2012>
>