configure.ac

#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_PREREQ([2.69])
AC_INIT([CMatrix], [2.0], [ewfalor@gmail.com])
AC_CONFIG_SRCDIR([cmatrix.c])
AC_CONFIG_HEADERS([config.h])

AM_INIT_AUTOMAKE([foreign -Wall -Werror subdir-objects])
AC_USE_SYSTEM_EXTENSIONS

# Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_MAKE_SET
PKG_PROG_PKG_CONFIG

# Checks for header files.
AC_CHECK_HEADERS([fcntl.h stddef.h stdint.h stdlib.h string.h sys/ioctl.h termio.h termios.h unistd.h])
AC_CHECK_HEADERS([curses.h ncurses.h ncursesw/curses.h])

# Detect curses (prefer ncursesw via pkg-config, fall back to search)
have_ncurses_pkg=no
CURSES_LIB_NAME=""
PKG_CHECK_MODULES([NCURSES], [ncursesw], [have_ncurses_pkg=yes
                                         CURSES_LIB_NAME=ncursesw], [
  PKG_CHECK_MODULES([NCURSES], [ncurses], [have_ncurses_pkg=yes
                                          CURSES_LIB_NAME=ncurses], [
    have_ncurses_pkg=no
  ])
])

AS_IF([test "x$have_ncurses_pkg" = "xyes"], [
  : # use NCURSES_CFLAGS/NCURSES_LIBS via Makefile
], [
  AC_SEARCH_LIBS([initscr], [ncursesw ncurses curses tinfo], [
    AS_CASE(["$ac_cv_search_initscr"],
      [no], [AC_MSG_ERROR([curses (ncurses) development files not found])],
      ["none required"], [CURSES_LIB_NAME=""],
      [-l*], [CURSES_LIB_NAME=`echo "$ac_cv_search_initscr" | sed 's/^-l//'`]
    )
    AS_IF([test -n "$CURSES_LIB_NAME"], [NCURSES_LIBS="-l$CURSES_LIB_NAME"], [NCURSES_LIBS=""]) 
  ], [
    AC_MSG_ERROR([curses (ncurses) development files not found])
  ])
])

AC_SUBST([NCURSES_CFLAGS])
AC_SUBST([NCURSES_LIBS])
AC_SUBST([CURSES_LIB_NAME])

# Checks for typedefs, structures, and compiler characteristics.
AC_C_INLINE
AC_TYPE_PID_T
AC_TYPE_SIZE_T

# Checks for library functions.
AC_CHECK_FUNCS([atexit dup2 getpagesize memset putenv strcasecmp strdup])

# Optional curses functions (after libraries are known)
AC_CHECK_FUNCS([use_default_colors resizeterm wresize])

AC_CONFIG_FILES([Makefile])

AC_ARG_ENABLE(debug, [  --enable-debug          Enable debugging (def disabled)],)

AC_OUTPUT