Fails to build and run in Gentoo

[acidrums4]

Greetings,

I've tried so long to successfully run this game but sadly, still can't.

In Gentoo (amd64, gcc-11.3.0, glibc-2.34-r13, ld 2.37, ncurses-6.3_p20220423) it fails to build:

mkdir -p bin build                                     
g++  build/main.o  build/shape.o  build/screen.o  build/game.o  build/functions.o -std=c++11 -MMD -MP  -O2 -lncursesw -o bin/tetris
/usr/lib/gcc/x86_64-pc-linux-gnu/11.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: build/main.o: undefined reference to symbol 'keypad'
/usr/lib/gcc/x86_64-pc-linux-gnu/11.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: /lib64/libtinfow.so.6: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status                                                                                                                                    
make: *** [Makefile:30: main] Error 1

But learned that adding -ltinfo in Makefile's CXXFLAGS var lets it build:

mkdir -p bin build 
g++ -std=c++11 -MMD -MP  -O2 -lncursesw -ltinfo -MT build/main.o src/main.cpp -c -o build/main.o
g++ -std=c++11 -MMD -MP  -O2 -lncursesw -ltinfo -MT build/shape.o src/shape.cpp -c -o build/shape.o
src/shape.cpp: In member function 'void Shape::draw()':
src/shape.cpp:246:25: warning: format not a string literal and no format arguments [-Wformat-security]
246 |                 mvprintw(currentPos[0], currentPos[1], string("██").c_str());
|                 ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/shape.cpp:249:25: warning: format not a string literal and no format arguments [-Wformat-security]
249 |                 mvprintw(currentPos[0], currentPos[1], string("").c_str());
|                 ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/shape.cpp: In member function 'void Shape::groundDraw(int)':
src/shape.cpp:380:25: warning: format not a string literal and no format arguments [-Wformat-security]
380 |                 mvprintw(currentPos[0], currentPos[1], string("░░").c_str());
|                 ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/shape.cpp:383:25: warning: format not a string literal and no format arguments [-Wformat-security]
383 |                 mvprintw(currentPos[0], currentPos[1], string("").c_str());
|                 ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
g++ -std=c++11 -MMD -MP  -O2 -lncursesw -ltinfo -MT build/screen.o src/screen.cpp -c -o build/screen.o
src/screen.cpp: In member function 'void Screen::top()':
src/screen.cpp:30:11: warning: format not a string literal and no format arguments [-Wformat-security]
30 |     printw(readLine(screenstr, 0).c_str());
|     ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/screen.cpp: In member function 'void Screen::draw()':
src/screen.cpp:64:27: warning: format not a string literal and no format arguments [-Wformat-security]
64 |                     printw(printChar.c_str());
|                     ~~~~~~^~~~~~~~~~~~~~~~~~~
src/screen.cpp:71:27: warning: format not a string literal and no format arguments [-Wformat-security]
71 |                     printw(string(" ").c_str());
|                     ~~~~~~^~~~~~~~~~~~~~~~~~~~~
src/screen.cpp:75:23: warning: format not a string literal and no format arguments [-Wformat-security]
75 |                 printw(window[i][j].c_str());
|                 ~~~~~~^~~~~~~~~~~~~~~~~~~~~~
src/screen.cpp:78:15: warning: format not a string literal and no format arguments [-Wformat-security]
78 |         printw(string("\n").c_str());
|         ~~~~~~^~~~~~~~~~~~~~~~~~~~~~
g++ -std=c++11 -MMD -MP  -O2 -lncursesw -ltinfo -MT build/game.o src/game.cpp -c -o build/game.o
src/game.cpp: In function 'void game(Shape, Screen, int, bool, std::string)':
src/game.cpp:166:13: warning: format not a string literal and no format arguments [-Wformat-security]
166 |     mvprintw(9,8,string("Game over!").c_str());
|     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/game.cpp:167:13: warning: format not a string literal and no format arguments [-Wformat-security]
167 |     mvprintw(10,5,string("Try again? (y/n)").c_str());
|     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
g++ -std=c++11 -MMD -MP  -O2 -lncursesw -ltinfo -MT build/functions.o src/functions.cpp -c -o build/functions.o
g++  build/main.o  build/shape.o  build/screen.o  build/game.o  build/functions.o -std=c++11 -MMD -MP  -O2 -lncursesw -ltinfo -o bin/tetris

But trying to run the output binary (bin/tetris) causes a segfault (Sorry, can't provide a coredump since I don't have debug symbols set up).

Is there something I'm doing wrong here? Not familiar with Make or debugging so am kind of lost here.