Filter source files if CURSES not found ♻️

- Updated `Makefile` to exclude `athr_terminal_curses.c/h` if CURSES not found
- Defined `_POSIX_C_SOURCE 200809L` in `athr_terminal_ioctl.c` to ensure compatibility

These changes improve the build process by conditionally excluding source files
related to CURSES if not found, preventing build errors. Additionally, setting
_POSIC_C_SOURCE ensures the `athr_terminal_ioctl.c` file adheres to the correct
POSIX standard for broader compatibility.

Makefile

@@ -44,6 +44,11 @@ else
   HDR := $(filter-out athr_terminal_win32.h,$(SRC))
 endif
 
+ifeq ($(CURSES_FOUND),false)
+  SRC := $(filter-out athr_terminal_curses.c,$(SRC))
+  HDR := $(filter-out athr_terminal_curses.h,$(SRC))
+endif
+
 CFLAGS += -DATHR_TERMINAL_WIN32=$(ATHR_TERMINAL_WIN32)
 CFLAGS += -DATHR_TERMINAL_CURSES=$(ATHR_TERMINAL_CURSES)
 CFLAGS += -DATHR_TERMINAL_IOCTL=$(ATHR_TERMINAL_IOCTL)

athr_terminal_ioctl.c

@@ -1,3 +1,8 @@
+#if !defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE < 200809L
+#undef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 200809L
+#endif
+
 #include "athr_terminal_ioctl.h"
 #include "athr_logger.h"
 #include "athr_terminal.h"