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Re: [Tinycc-devel] Add support of musl-libc to tinycc
From: |
grischka |
Subject: |
Re: [Tinycc-devel] Add support of musl-libc to tinycc |
Date: |
Sat, 13 May 2017 09:00:31 +0200 |
User-agent: |
Thunderbird 2.0.0.23 (Windows/20090812) |
avih wrote:
I tested tcc on alpine linux (has gcc and musl-libc only) and noticed:
1. tcc commit 1094891 broke musl detection on alpine.
I disabled auto-detection and added a switch instead
./configure --config-musl
and a suggestion to use it if musl is detected
"Perhaps you want ./configure --config-musl"
2. While all the tests now pass, if tcc is used to build tcc again, tests fail.
Could be setjmp/longjmp or jmp_buf size/alignment.
3. It seems that (with musl) tcc needs stdarg.h included before stdio.h, or else
You could create a stdio.h in <tccdir>/include
#include "stdarg.h"
#include_next <stdio.h>
4. Initializers of NAN fail with "division by 0 in a constant", but I was _not_
tcc knows __nan__
5. tcc dislikes some #defines (I couldn't reproduce in a minimal case), e.g.:
A: #define HAVE_CHMAP_API \
(defined(SND_CHMAP_API_VERSION) && SND_CHMAP_API_VERSION >= (1 << 16))
According to the standard "#define ... defined" is undefined.
Undefined identifiers however evaluate to 0:
#define HAVE_CHMAP_API (SND_CHMAP_API_VERSION >= (1 << 16))
All that being said, after replacing the NANs with 0, moving include stdarg to
the top, and modifying the #define, mpv builds with tcc cleanly and runs fine
on alpine (with video, opengl, audio, etc).
Doesn't sound too bad ;)
--- grischka
- Re: [Tinycc-devel] Add support of musl-libc to tinycc, (continued)
- Re: [Tinycc-devel] Add support of musl-libc to tinycc, Larry Doolittle, 2017/05/07
- Re: [Tinycc-devel] Add support of musl-libc to tinycc, Marc Vertes, 2017/05/08
- Re: [Tinycc-devel] Add support of musl-libc to tinycc, avih, 2017/05/11
- Re: [Tinycc-devel] Add support of musl-libc to tinycc, avih, 2017/05/12
- Re: [Tinycc-devel] Add support of musl-libc to tinycc, u-jps5, 2017/05/12
- Re: [Tinycc-devel] Add support of musl-libc to tinycc, Kamil Rytarowski, 2017/05/12
- Re: [Tinycc-devel] Add support of musl-libc to tinycc, u-jps5, 2017/05/12
- Re: [Tinycc-devel] Add support of musl-libc to tinycc, Kamil Rytarowski, 2017/05/12
- Re: [Tinycc-devel] Add support of musl-libc to tinycc, u-jps5, 2017/05/12
- Re: [Tinycc-devel] Add support of musl-libc to tinycc, Kamil Rytarowski, 2017/05/12
- Re: [Tinycc-devel] Add support of musl-libc to tinycc,
grischka <=
- Re: [Tinycc-devel] Add support of musl-libc to tinycc, avih, 2017/05/13