Am 01.01.22 um 13:16 schrieb s...@pandora.be:
Sorry I meant /usr/include/jpeglib.h ...
Sorry, I was too quick with my answer to your original mail.
Anyway this file points to the libjpeg6-ijg implementation.
I'd recommend for anyone testing libjpeg8-turbo to temporarily remove
/usr/include/jpeglib.h,
so to be 100% sure that somehow /usr/include/jpeglib.h is not included.
The sizeof of struct jpeg_decompress_struct and struct jpeg_compress_struct are
different,
between the JPEG_IMPLEMEN leading to hard to track allocation failures.
In the case of Squeak there is a Smalltalk primitive that returns the sizeof
the underlying C structs,
and this must be correct obviously when changing from e.g. libjpeg6-ijg to
libjpeg9-ijg or libjpeg8-turbo.
Some packages can be configured to use an explicit path, eg.
CONFIGURE_OPTIONS += --with-jpeg-dir=/usr/include/libjpeg8-turbo
Andreas
David Stes
----- Op 1 jan 2022 om 12:20 schreef stes s...@telenet.be:
I have meanwhile found out what the problem was with Squeak and libjpeg9-ijg and
libjpeg8-turbo.
Basically this is Squeak and OpenIndiana specific.
The header file
/usr/include/libjpeg.h
is a link to libjpeg6-ijg and that is why it only worked with libjpeg6-ijg.
I have in my Makefile for Squeak , CPPFLAGS set to add -I flag for the correct
JPEG_IMPLEMEN include directory,
but the Squeak configure script ignores or does not respect the CPPFLAGS, and
setting the -I flag in the CFLAGS,
fixes the issue.
It's important to use the right libjpeg.h header file.
The C struct size is different for some structs's like jpegcompress or
jpegdecompress
and these sizes differ between libjpeg6-ijg, libjpeg8-turbo and libjpeg9-ijg.
As soon as the right #include is used, Squeak links and opens JPEG files using
libjpeg8-turbo and libjpeg9-ijg as well.
To debug this, it helped to
rm /usr/include/libjpeg.h
Perhaps there could also be a IPS mediator to select which libjpeg
implementation is to be used.
Regards,
David Stes
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