taskReproducible paper template - Tasks: task #15745, Automatically check if non-C...


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task #15745: Automatically check if non-C compilers exist

Submitted by:  Mohammad Akhlaghi <makhlaghi>
Submitted on:  Sat 08 Aug 2020 05:55:13 PM UTC  
Should Start On:  Fri 07 Aug 2020 11:00:00 PM UTC Should be Finished on:  Fri 07 Aug 2020 11:00:00 PM UTC
Category:  Software Priority:  5 - Normal
Status:  Postponed Privacy:  Public
Percent Complete:  0% Assigned to:  None
Open/Closed:  Open Effort:  0.00

Sat 08 Aug 2020 05:55:13 PM UTC, original submission:  

While building GCC, we also build some other compilers besides the C compiler that we have found are necessary for some high-level software. Currently GCC also builds a C++, Fortran, Objective-C and Objective-C++.

So when Maneage doesn't build GCC itself and relies on the host's compiler, if these compilers don't exist the configuration will fail in the middle and can be very annoying (as reported in bug #58917).

But the manual solution there is really not scalable and can itself cause bugs and annoying situations (for example if a project author forgets to set 'need_gfortran'!).

So we should define a way to use the software building Makefiles to see if special compilers are necessary. This is what occurs to me right now:

For those packages that need non C/C++ compilers, we can add a special prerequisite for that compiler that is also defined during the building of GCC. In this way, with a '--dry-run' run of the 'high-level.mk', we should be able to see if certain compilers are necessary. 

Mohammad Akhlaghi <makhlaghi>
Project Administrator


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