Package: libncursesw5-dev Packages: libncursesw?5.* Version: 6.0+20161126-1+deb9u2 (for libncursesw5-dev)
warning: implicit declaration of function ‘mvaddnwstr’ [-Wimplicit-function-declaration] when compiling with -lncursesw. However, the resulting binary _does_ work so the linker does find the correct function. I suggest the development package be corrected. I am using Linux 4.9.0-8-amd64 #1 SMP Debian 4.9.130-2 (2018-10-27) x86_64 GNU/Linux and Debian GLIBC 2.24-11+deb9u3 Emil