Compiler Failing because of implicit declarations about rgbds HOT 12 CLOSED

This is with using Clang, I should probably add.

from rgbds.

Tried with gcc, was able to build with the release 0.24 version however, not sure what the issue is then.

from rgbds.

What version of libpng are you using? Have you tried a current one?

from rgbds.

I've tried with a few different versions, I've tried, libpng3, libpng12, libpng16, same error each time. But I was able to make and install This version without any issues. Has something major changed?

from rgbds.

Well, the obvious change since 0.2.4 is that there’s now a program that actually uses libpng, rgbgfx.

from rgbds.

What operating system are you running?

rgbgfx builds fine here with clang and libpng-1.6.25. You should definitely be using 1.6.something—rgbgfx uses libpng APIs from that version.

from rgbds.

I'm on Ubuntu Linux 16.04.

Ill double check and get back to you with full versions and compiler output

On 13 Sep 2016 9:06 am, "Anthony J. Bentley" [email protected]
wrote:

What operating system are you using?

rgbgfx builds fine here with clang and libpng-1.6.25. You should
definitely be using 1.6.something—rgbgfx uses libpng APIs from that
version.

—
You are receiving this because you authored the thread.
Reply to this email directly, view it on GitHub
#92 (comment), or mute
the thread
https://github.com/notifications/unsubscribe-auth/AKaur-2hKXfuzEezZxJ_coZBxlKYPX8sks5qplmFgaJpZM4J6ttB
.

from rgbds.

#94

from rgbds.

I also just ran into this error and fixed it by installing the latest 1.6 version of libpng from sourceforge.

Xubuntu 16.04 (and consequently Ubuntu 16.04) uses libpng 1.2.54 so we must install libpng from source.
Even installing libpng-dev does not install a newer version (perhaps that's obvious to more experienced people unlike myself)

from rgbds.

Right, this can be solved by installing a current libpng (too bad they keep “improving” the API all the time). Not related to #94 either.

from rgbds.

I honestly wouldn't have thought to install the newer version of libpng if it weren't for this issue.
Is there anyway we can make checks during the make process?
pkg-config --modversion libpng
will return the version of libpng

from rgbds.

I hope I'm not bothering anyone writing in a closed issue, but #104 addresses the issue stated by @SirSharpest, grating compatibility with older libpng versions.

from rgbds.