netcmp.c:55 declares oldinthandler with empty parameter list:
void (*oldinthandler)() = SIG_DFL;
In K&R / pre-C23, this means 'function with unspecified parameters'.
GCC 14+ infers void(*)(void), which is incompatible with signal(2)'s
expected void(*)(int) handler. The signal(SIGINT, oldinthandler) calls
at lines 8777 and 8784 then fail with -Wincompatible-pointer-types
(now a default error in GCC 14+).
This 1-line fix matches the actual usage as a SIGINT handler with int
signum parameter, and restores tclnetgen.so build on Fedora 41+ /
Debian 13+ / Ubuntu 24.04+ (any system with GCC 14+).
Tested: tclnetgen.so now builds successfully and 'netgen -batch lvs'
mode works again.
jalcim
a0c49a026a