dnl Autoconf script for the GPL Speedtouch driver
dnl Written by Francois Rogler <francois@rogler.org>
dnl June 2001
dnl
dnl Supported options
dnl
dnl --enable-release
dnl --enable-debug
dnl --enable-syslog    (experimental)
dnl --enable-static    (experimental)


AC_INIT(speedtouch, 1.3, speedtouch@ml.free.fr)
VERSION="1.3"
AC_CONFIG_SRCDIR(AUTHORS)

dnl default prefix for user installed programs, RPMs will pass a new prefix
AC_PREFIX_DEFAULT("/usr/local")
AC_CANONICAL_HOST

dnl Check for several programs
AC_PROG_CC
AC_PROG_MAKE_SET
AC_PROG_INSTALL

test -n "GCC" && CWARN="-Wall"

test "x$enable_syslog" = "x" && enable_syslog="yes";
test "x$enable_syslog" = "xno" && unset enable_syslog;

# if no --sysconfdir is specified, default to /etc
# --sysconfdir='${prefix}/etc' is considered the system default
test "x$sysconfdir" = 'x${prefix}/etc' && sysconfdir="/etc"

CFLAGS=`echo $CFLAGS | sed s/"-g"/""/g`

dnl User options
AC_ARG_ENABLE(release,[  --enable-release	  set the compiler flags to -O6],
	CFLAGS="-O6")

AC_ARG_ENABLE(debug,[  --enable-debug	  set the compiler flags to -g],[
	CFLAGS="-g"; debug_flags="-DDEBUG"])

AC_ARG_ENABLE(syslog,[  --enable-syslog	  log messages via syslog],
	syslog_flags="-DUSE_SYSLOG")

AC_ARG_ENABLE(install,[  --enable-install=user	  install as non-root user],
	installuser=$enable_install)
: ${installuser:=root}

AC_ARG_ENABLE(static,[  --enable-static	   statically link libs (to avoid lib dependancies for cross-compiles)],
	[link_opts="--static"])

dnl Check for several headers
AC_CHECK_HEADERS(
	stdio.h \
	unistd.h \
	fcntl.h \
	errno.h \
	time.h \
	signal.h \
	stdlib.h \
	termios.h \
	limits.h \
	stdarg.h \
	string.h \
	sys/resource.h \
	sys/ioctl.h \
	sys/types.h \
	sys/stat.h \
	sys/time.h \
	sys/param.h \
	sys/socket.h \
	syslog.h
	, , AC_MSG_ERROR(Missing header file))

dnl Check for several types
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_C_CONST
AC_TYPE_SIGNAL

dnl Check for several functions
AC_CHECK_FUNCS([alarm])
AC_CHECK_FUNCS([gettimeofday])
AC_CHECK_FUNCS([memmove])
AC_CHECK_FUNCS([memset])
AC_CHECK_FUNCS([mkfifo])
AC_CHECK_FUNCS([select])
AC_CHECK_FUNCS([strdup])
AC_CHECK_FUNCS([strerror])

dnl pthread lib
MAKE_INSTALL_SCRIPT=""
case "$host" in
	*-freebsd4*)
		st_compile="modem_run pppoa2 pppoa3"
		THREAD_LIBS="-pthread"
		AC_MSG_WARN(pppoa3 is still experimental)
		AC_CHECK_HEADER(semaphore.h, , [AC_MSG_WARN([Missing header file, pppoa3 won't be compiled]); st_compile="modem_run pppoa2"])
		DOCDIR="doc-bsd"
		PUSB_SOURCE="pusb-bsd.c"
		AC_DEFINE(FREEBSD)
		;;
	*-freebsd5*)
		st_compile="modem_run pppoa2 pppoa3"
		THREAD_LIBS="-lkse"
		AC_CHECK_HEADER(semaphore.h, , [AC_MSG_WARN([Missing header file, pppoa3 won't be compiled]); st_compile="modem_run pppoa2"])
		DOCDIR="doc-bsd"
		PUSB_SOURCE="pusb-bsd.c"
		AC_DEFINE(FREEBSD)
		;;
	*-netbsd*)
  		st_compile="modem_run pppoa2"
		AC_MSG_WARN(pthread lib not yet supported)
		DOCDIR="doc-bsd"
		PUSB_SOURCE="pusb-bsd.c"
		AC_DEFINE(NETBSD)
		;;
	*-openbsd*)
  		st_compile="modem_run pppoa2"
		AC_MSG_WARN(pthread lib not yet supported)
		DOCDIR="doc-bsd"
		PUSB_SOURCE="pusb-bsd.c"
		AC_DEFINE(NETBSD)
		;;
	*-linux*)
		st_compile="modem_run pppoa2 pppoa3"
		AC_CHECK_LIB(pthread, pthread_create, THREAD_LIBS="-pthread",
		 [AC_MSG_WARN(pthread lib wasn't found : pppoa3 won't be compiled); st_compile="modem_run pppoa2"])
		DOCDIR="doc-linux"
		PUSB_SOURCE="pusb-linux.c"
		AC_DEFINE(LINUX)
		;;
	*)
		AC_MSG_ERROR(Your OS isn't supported)
		;;
esac
AC_SUBST(THREAD_LIBS)
AC_SUBST(st_compile)
AC_SUBST(MAKE_INSTALL_SCRIPT)

dnl Check for the existence of RPM tools and get the build root
dnl Either way we subsitute the RPM variables as nothing should
dnl break in the process.

AC_CHECK_PROG(RPM_ROOT,rpm,`rpm --eval=%_topdir`)
AC_SUBST(RPM_ROOT)

PWD=`pwd`
AC_SUBST(PWD)
AC_SUBST(CWARN)
AC_SUBST(VERSION)
AC_SUBST(DOCDIR)
AC_SUBST(PUSB_SOURCE)
AC_SUBST(USE_SYSLOG)
AC_SUBST(ac_configure_args)
AC_SUBST(installuser)
AC_SUBST(syslog_flags)
AC_SUBST(link_opts)

AC_CONFIG_FILES(
	Makefile \
        src/Makefile \
        src/speedtouch-setup \
        src/speedtouch-start \
        src/speedtouch-stop \
        hotplug/Makefile \
        hotplug/speedtouch \
        doc-linux/Makefile \
        doc-bsd/Makefile \
        speedtouch.spec)

AC_OUTPUT