[Tinycc-devel] Regression building GMP with tcc, bisected

[John Scott]

tcc 0.9.27 works, but current mob fails during GMP's configure step. For GMP I 
use --disable-assembly and --disable-static, and it fails on
checking how to define a 32-bit word... configure: error: cannot determine how 
to define a 32-bit word

I don't know for certain that this is tcc's fault; it could be a normal change 
that broke the configure script's heuristics. You can fetch GMP from
https://gmplib.org/download/gmp/gmp-6.2.0.tar.lz

Here's the culprit:
72729d8e360489416146d6d4fd6bc57c9c72c29b is the first bad commit
commit 72729d8e360489416146d6d4fd6bc57c9c72c29b
Author: grischka <grischka>
Date:   Wed Dec 11 00:37:18 2019 +0100

allow libtcc states to be used concurrently

This allows creation of TCCStates and operation with API
calls independently from each other, even from threads.

Frontend (option parsing/libtcc.c) and backend (linker/tccelf.c)
now depend only on the TCCState (s1) argument.

Compilation per se (tccpp.c, tccgen.c) is still using
globals for convenience.  There is only one entry point
to this section which is tcc_compile() which is protected
by a semaphore.

There are some hacks involved to avoid too many changes,
as well as some changes in order to avoid too many hacks ;)

The test libtcc_test_mt.c shows the feature.  Except this
new file the patch adds 87 lines overall.

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