#45 Doesn't compile: error in ratio.c

[RoBorg]

ratio.c:25: error: conflicting types for ‘opng_longest_impl_t’
ratio.c:24: error: previous declaration of ‘opng_longest_impl_t’ was here

Line 25 should have "opng_ulongest_impl_t" not "opng_longest_impl_t"

[Cosmin Truta]

You are correct, thank you for your report.

Out of curiosity, which compiler/platform are you using? That piece of code is enabled only if a 64-bit integer type is not assumed to exist. Is that indeed the case?

[Ryan]

I'm running into the same thing

Linux cld01-devops01 2.6.18-308.4.1.el5xen #1 SMP Tue Apr 17 17:49:15 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux
gcc version 4.1.2 20080704 (Red Hat 4.1.2-54)

[Cosmin Truta]

This seems to be happening when the compiler runs in C89 mode by default. As a workaround, enable the C99 mode (plus the POSIX extensions), e.g. by adding "-std=gnu99" to CFLAGS.

[Till Maas]

Here is also a patch for this: https://sourceforge.net/p/optipng/patches/7/