make errors on windows

I am running on windows having Msys2 installed as shell, when I try to run the make I get some errors.

lex.l:308:8: error: 'struct tm' has no member named 'tm_zone'

To solve this I tried to remove the following code from lex.l:

307 #if !defined(__CYGWIN__) && !defined(__sun)
308     tm.tm_zone = 0;
309 #endif

However I now get a new error when running make:

main.c:9:10: fatal error: regex.h: No such file or directory

I was hoping this was solved by adding a package to msys2 with the pacman installer, however there are no package with the name regex. How do I solve theese problems?

I would love to convert my windows CVS to something else and your tool seems to be the one that could help me.

Windows update: I have managed to fix the regex.h issue by installing libsystre like this:

pacman -S $MINGW_PACKAGE_PREFIX-libsystre

However this introduced another issue:

main.c:12:10: fatal error: sys/resource.h: No such file or directory