On 4/23/25 01:17, Jing Luo wrote:
On 2025-04-23 13:13, Jacob Bachmeyer wrote:
On 4/22/25 06:13, Jing Luo via cfarm-users wrote:
[...]
Finally I also found a "we-violate-the-GPL-because-we-don't-care"
compiler [5], a sourceless, prebuilt and customized gnu toolchain by
Spacemit with "--build=x86_64-linux-gnu --host=riscv64-linux-gnu",
which is linked from [6]. This one deserves a ((dis)honorary)
mention because cfarm95 runs on the Spacemit CPU.
[...]
[5] https://archive.spacemit.com/toolchain/
[6]
https://milkv.io/docs/jupiter/development-guide/kernel-compilation
Hmmm, a blatant GPL violation on GCC? Have you contacted [A1] the FSF
about it?
[...]
[A1] https://www.gnu.org/licenses/gpl-violation.html
Not yet: I thought I should at least ask for the source code before
reporting it to FSF. But unfortunately I can't find any email address
or postal address or phone number to contact them...
My understanding is that the FSF will start by asking nicely for
sources, although that requires that the FSF be provided with some way
to contact the distributor in question...
On the other hand, I found a forum topic related to it [7]:
(a rough translation from Chinese)
[Q3] Is the source code of Spacemit's gcc available
[A3] No. But [we] didn't make a lot of changes on gcc, basically it's
[the same as] the open source (sic.) version. After all, the only
thing added was assembler support, i.e. changing binutils. The patches
supporting the instruction will be ready to be released, so that
everyone who build their own toolchain can also patch [it] themselves.
Oh well.
[7] https://forum.spacemit.com/t/topic/387
That "No." is a GPL violation right there, as I understand it. Can the
Chinese original be read as "GCC is unmodified from the GNU version" or
are they attempting to minimize the fact that they distribute a modified
*compiler*?
GNU binutils is another package, but could be conflated as part of GCC
because GCC uses binutils to generate binary output, and binary
distributions of GCC therefore normally include binutils.
This leads to a possible scenario: they are distributing a build of
unmodified GCC with their patched binutils bundled. Is the promised
binutils patch available?
-- Jacob
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