https://github.com/z88dk/z88dk contains a bunch of C99 compatibility fixes, like: commit d577bf2c6eec362cb49caacc280df4abda7d6c1f Author: suborb <dom.uk> Date: Tue Mar 29 12:49:16 2016 +0000 Clean up some warnings commit 39b7c12bf41b422c9372fe3ed4ae181847048354 Author: suborb <dom.uk> Date: Tue Mar 29 12:08:55 2016 +0000 De-double line appmake + start of code cleanup commit 5bb32268abbcfe98f435b4cbcf33324121f05b4d Author: suborb <dom.uk> Date: Tue Mar 29 11:44:18 2016 +0000 Clean up code a bit to remove warnings
Fixed via backports in z88dk-1.10.1-26.20150709cvs.fc38.