Hello,
cc1: warnings being treated as errors x_gem.c: In function `wind_set_proc':x_gem.c:33: warning: passing arg 3 of `mt_wind_set_str' from incompatible pointer typemake: *** [../obj/x_gem.o] Error 1
A cast should solve this. in src/x_gem.c line 33, replace return wind_set_str( WindowHandle, 201, icon); by: return wind_set_str( WindowHandle, 201, (char*)icon); HTH, Arnaud.