[oi-dev] Heads-Up: building with libjpeg is broken

[Marcel Telka]

On Mon, Mar 04, 2024 at 09:46:59AM +0100, Marcel Telka wrote:
> If your installation is older than 2024-03-03 or you do not build using
> libjpeg then you can safely skip this message.
> 
> 
> If your system is up-to-date and you are building anything that requires
> libjpeg then please be aware that under some circumstances your build
> bits could be broken.
> 
> Simple test case showing the problem:
> 
> 
> $ cat > jpeg.c <<EOF
> #include <stdio.h>
> #include <stddef.h>
> #include <jpeglib.h>
> #include <jerror.h>
> 
> int
> main(void)
> {
> 	struct jpeg_decompress_struct info;
> 	struct jpeg_error_mgr err;
> 
> 	info.err = jpeg_std_error(&err);
> 	jpeg_create_decompress(&info);
> 
> 	return 0;
> }
> EOF
> $ gcc -Wall -ljpeg -ojpeg jpeg.c
> $ ./jpeg 
> Wrong JPEG library version: library is 62, caller expects 80
> $ echo $?
> 1
> $
> 
> 
> If the above is tested on an older system, then the ./jpeg command
> completes successfully.
> 
> 
> Please note that this depends on how exactly you integrate support for
> the libjpeg library, so it is possible that you are not affected.
> 
> It is not recommended to merge any PRs for oi-userland that could cause
> rebuild of components depending on libjpeg (either ijg or turbo) until
> this issue is solved.
> 
> Please also note that binaries built before 2024-03-03 that use libjpeg
> are not affected.

This issue has been fixed.  So if your system is up-to-date as of now
then you are safe to build with libjpeg again.

-- 
+-------------------------------------------+
| Marcel Telka   e-mail:   marcel at telka.sk  |
|                homepage: http://telka.sk/ |
+-------------------------------------------+