issues with Zlib while building libvips

[euzada]

Hi @kleisauke and @jcupitt,

I configured docker, wsl2 (Ubuntu) correctly, but when I tried to build libvips, I got an error regarding zlib library (Download failed).

here is a copy of the error about zlib, as you see below. I checked zlib release, and the newer version is 1.3, as you can see here : zlib. Will you please help me solve the download issues?:

  View a summary of image vulnerabilities and recommendations → docker scout quickview
Skip cloning, MXE already exists at /data/mxe
[ignore settings.mk]
[download]    zlib-1.2.13.tar.xz
MXE Warning! Downloading zlib from second URL.
MXE Warning! Downloading zlib from backup.

Download failed or wrong checksum of package zlib!
------------------------------------------------------------
2023-09-15 12:51:53 ERROR 404: Not Found.
--2023-09-15 12:51:53--  http://d1yihgixbnrglp.cloudfront.net/zlib%2D1%2E2%2E13%2Etar%2Exz_d14c38e313afc35a9a8760dadf26042f51ea0f5d154b0630a31da0540107fb98
Reusing existing connection to d1yihgixbnrglp.cloudfront.net:80.
HTTP request sent, awaiting response... 404 Not Found
2023-09-15 12:51:53 ERROR 404: Not Found.
Download failed!
------------------------------------------------------------
[log]      /data/mxe/log/zlib-download

make: *** [Makefile:741: download-only-zlib-1.2.13.tar.xz] Error 1

[lovell]

This relates to https://github.com/mxe/mxe/issues/3006 - we're likely to be updating dependency versions in this repo over the new few days.

[euzada]

Great, that makes sense. In the meantime, is there any workaround?

[kleisauke]

I'm currently doing a test build with commit f9a56b57bd1eded028cf3ca862683d5a841334e4, which should fix this.

[euzada]

Try it and get pixman error, which also need to be changed.

broken pixman URL

working pixman URL

MXE Warning! Downloading pixman from second URL.
MXE Warning! Downloading pixman from backup.

Download failed or wrong checksum of package pixman!
------------------------------------------------------------
2023-09-15 21:08:32 ERROR 404: Not Found.
--2023-09-15 21:08:32--  http://d1yihgixbnrglp.cloudfront.net/pixman%2D0%2E42%2E2%2Etar%2Egz
Reusing existing connection to d1yihgixbnrglp.cloudfront.net:80.
HTTP request sent, awaiting response... 404 Not Found
2023-09-15 21:08:32 ERROR 404: Not Found.
Download failed!
------------------------------------------------------------
[log]      /data/mxe/log/pixman-download

make: *** [Makefile:743: download-only-pixman-0.42.2.tar.gz] Error 1

[kleisauke]

@euzada Both URLs are functional on my end. As as workaround, you could place pixman-0.42.2.tar.gz into the build/mxe/pkg directory, assuming that the SHA256 checksum matches. https://github.com/libvips/build-win64-mxe/blob/56e617244d540ec0b4a3333f703ca1a379ecc9cc/build/overrides.mk#L131

[euzada]

You are right. The problem is in my network at work. Our IT blocks some links. So, I replaced all the blocked URLs with equivalent ones and the build was successful.

I wonder if I can use the container and the extra libraries and add libgtk-dev to try to build vipsdisp for Windows. Do you have any recommendations on how or if it is feasible? Because I believe the only extra library I need to add is only related to GTK4, but I could be wrong.

So I can close this issues after your answer or open another one.

[kleisauke]

Indeed, the only dependency that is extra needed by vipsdisp is GTK 4. I'm uncertain about the effort required to incorporate this into this build system.