Add ncurses hello world app

- Bump CMake version to 3.17
- Require ncurses
- Include ncurses libraries

Signed-off-by: Pavel Kalugin <paul.kalug@gmail.com>

CMakeLists.txt

@@ -1,5 +1,9 @@
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.17)
 project(rang)
 
+set(CURSES_NEED_NCURSES TRUE)
+find_package(Curses REQUIRED)
+
 add_subdirectory(src)
-target_include_directories(rang PRIVATE include)
+
+target_include_directories(rang PUBLIC include)

src/CMakeLists.txt

@@ -1 +1,4 @@
 add_executable (rang rang.cpp)
+
+target_include_directories(rang PUBLIC ${CURSES_INCLUDE_DIRS})
+target_link_libraries(rang PUBLIC ${CURSES_LIBRARIES})

src/rang.cpp

@@ -1,8 +1,12 @@
 #include "rang.h"
-#include <iostream>
+#include <ncurses.h>
 
 int main(int argc, char *argv[])
 {
-        std::cout << rang::MESSAGE;
+        initscr();                     /* Start curses mode 		  */
+        printw(rang::MESSAGE.c_str()); /* Print Hello World		  */
+        refresh();                     /* Print it on to the real screen */
+        getch();                       /* Wait for user input */
+        endwin();                      /* End curses mode		  */
         return 0;
 }