# $Id: configure.ac 98 2006-09-22 16:27:37Z sam $

AC_INIT(neercs, 0.0)

AC_PREREQ(2.50)
AC_CONFIG_SRCDIR(src/main.c)
AC_CONFIG_AUX_DIR(.auto)
AC_CANONICAL_SYSTEM

AM_INIT_AUTOMAKE(neercs, 0.0)
AM_CONFIG_HEADER(config.h)

AM_PROG_CC_C_O
AC_PROG_CPP

dnl AC_PROG_EGREP only exists in autoconf 2.54+, so we use AC_EGREP_CPP right
dnl now otherwise it might be set in an obscure if statement. Same thing for
dnl PKG_PROG_PKG_CONFIG which needs to be called first.
AC_EGREP_CPP(yes, foo)
PKG_PROG_PKG_CONFIG()

dnl Don't let pkg-config fuck our cross-compilation environment
m4_pattern_allow([^PKG_CONFIG_LIBDIR$])
if test "$build" != "$host" -a "${PKG_CONFIG_LIBDIR}" = ""; then
  export PKG_CONFIG_LIBDIR=/dev/null
fi

dnl conditional builds
AC_ARG_ENABLE(debug,
  [  --enable-debug          build debug versions of neercs (default no)])

CACA="no"
PKG_CHECK_MODULES(CACA, caca >= 0.99.beta15,
 [CACA="yes"],
 [AC_MSG_RESULT(no)
  AC_MSG_ERROR([you need libcaca version 0.99.beta15 or later])])

AC_CHECK_HEADERS(stdio.h pty.h sys/ioctl.h sys/ptrace.h sys/stat.h sys/syscall.h sys/user.h sys/wait.h linux/kdev_t.h linux/major.h security/pam_appl.h security/pam_misc.h)

AC_CHECK_LIB(pam, pam_authenticate,
 [PAM_LIBS="${PAM_LIBS} -lpam"
  AC_DEFINE(USE_LOCK, 1, [Locking the PTY is supported])])
AC_SUBST(PAM_LIBS)

AC_CHECK_LIB(caca, caca_clear_dirty_rect_list,
 [AC_DEFINE(HAVE_CACA_DIRTY_RECTANGLES, 1, [libcaca has dirty rectangles])])

AC_CHECK_LIB(caca, caca_fill_triangle_textured,
 [AC_DEFINE(HAVE_CACA_TRIANGLE_TEXTURING, 1, [libcaca has trifiller])])

AC_CHECK_LIB(util, forkpty, UTIL_LIBS="${UTIL_LIBS} -lutil")
AC_SUBST(UTIL_LIBS)

AC_MSG_CHECKING(for pty grab support)
case $target in
  i?86-*-linux-*|amd64-*-linux-*|x86_64-*-linux-*)
    AC_DEFINE(USE_GRAB, 1, [Grabbing processes is supported])
    grab=yes ;;
  *)
    grab=no ;;
esac
AC_MSG_RESULT($grab)

if test "${enable_debug}" = "yes"; then
  AC_DEFINE(DEBUG, 1, Define to 1 to activate debug)
fi

AC_DEFINE(_GNU_SOURCE, 1, [Use GNU extentions])

# Optimizations
CFLAGS="${CFLAGS} -g -O2 -fno-strength-reduce -fomit-frame-pointer"
# Code qui fait des warnings == code de porc == deux baffes dans ta gueule
CFLAGS="${CFLAGS} -Wall -Wpointer-arith -Wcast-align -Wcast-qual -Wstrict-prototypes -Wshadow -Waggregate-return -Wmissing-prototypes -Wnested-externs -Wsign-compare"

AC_OUTPUT([
  Makefile
  doc/Makefile
  src/Makefile
  data/Makefile
])