The ports using c2hs and gtk2hs fail to build with modern compilers as the c11 features of the FreeBSD system headers are not hidden, yet the tools only understand c99.
* revert change to devel/hs-ncurses from r436451
* patch devel/hs-c2hs to pass -std=c99.
* patch devel/hs-gtk2-buildtools to pass -std=c99.
This should fix compilation of
* devel/hs-ncurses
* dns/hs-gnuidn
* graphics/hs-cairo
* x11-toolkits/hs-vte
* devel/hs-gconf
PR: 216707
Reviewed by: rakuco
Approved by: portmgr (antoine)
Differential Revision: https://reviews.freebsd.org/D10081
4492f249db