Re: [PATCH, Modula-2 (C/C++/D/F/Go/Jit)] (Register spec fn) (v2)

[Matthias Klose <doko@ubuntu.com>]

On 08.07.19 23:19, Matthias Klose wrote:
> On 14.06.19 15:09, Gaius Mulley wrote:
>>
>> Hello,
>>
>> here is version two of the patches which introduce Modula-2 into the
>> GCC trunk.  The patches include:
>>
>>   (*)  a patch to allow all front ends to register a lang spec function.
>>        (included are patches for all front ends to provide an empty
>>         callback function).
>>   (*)  patch diffs to allow the Modula-2 front end driver to be
>>        built using GCC Makefile and friends.
>>
>> The compressed tarball includes:
>>
>>   (*)  gcc/m2  (compiler driver and lang-spec stuff for Modula-2).
>>        Including the need for registering lang spec functions.
>>   (*)  gcc/testsuite/gm2  (a Modula-2 dejagnu test to ensure that
>>        the gm2 driver is built and can understands --version).
>>
>> These patches have been re-written after taking on board the comments
>> found in this thread:
>>
>>    https://gcc.gnu.org/ml/gcc-patches/2013-11/msg02620.html
>>
>> it is a revised patch set from:
>>
>>    https://gcc.gnu.org/ml/gcc-patches/2019-06/msg00220.html
>>
>> I've run make bootstrap and run the regression tests on trunk and no
>> extra failures occur for all languages touched in the ChangeLog.
>>
>> I'm currently tracking gcc trunk and gcc-9 with gm2 (which works well
>> with amd64/arm64/i386) - these patches are currently simply for the
>> driver to minimise the patch size.  There are also > 1800 tests in a
>> dejagnu testsuite for gm2 which can be included at some future time.
> 
> I had a look at the GCC 9 version of the patches, with a build including a make
> install. Some comments:

A look at the licenses:

libgm2/p2c/*: GPL 3+
libgm2/libiso/*: LGPL 2.1+
libgm2/libmin/libc.c: GPL 3+
libgm2/liblog/*: LGPL 2.1+
libgm2/libpim/*: LGPL 2.1+
libgm2/libpim/Selective.c: GPL 3+
libgm2/libpim/wrapc.c: GPL 3+
libgm2/libpth/*: LGPL 2.1+

gcc/gm2/ulm-lib-gm2/* GPL 3+, Ulm copyright holder?

gcc/gm2/gm2-libs/*.def GPL 3+
gcc/gm2/gm2-libs/Break.def LGPL 2.1+
gcc/gm2/gm2-libs/*.mod LGPL 2.1+
gcc/gm2/gm2-libs/Builtins.mod GPL 3+

I didn't look at everything in gcc/gm2, however it's not clear for me when a
file is LGPL or GPL.  And at least in gm2-libs, it seems to be mixed randomly.
First I thought all definition modules were GPL, and implementation modules were
LGPL, but that's not the case.

So currently all code linked with the runtime libs becomes GPL 3+?

For the ulm lib, the files mention the Ulm university as the copyright holder,
but it's not clear which license these files had before they were imported.

libgm2 seems to be mostly LGPL except for two files. Intended?

Matthias