dnl Process this file with autoconf to produce a configure script.
AC_INIT(main.c)

HELMPOT_MAJOR_VERSION=0
HELMPOT_MINOR_VERSION=1
HELMPOT_MICRO_VERSION=0
HELMPOT_VERSION=$HELMPOT_MAJOR_VERSION.$HELMPOT_MINOR_VERSION.$HELMPOT_MICRO_VERSION
VERSION=$HELMPOT_VERSION

AC_SUBST(HELMPOT_VERSION)

AC_ARG_ENABLE(
	checks,
	[  --enable-checks[=ARG]   include debugging checks [default=yes]],
	[
		if test $enableval = yes; then
			AC_DEFINE(ENABLE_CHECKS)
		fi
	],
	AC_DEFINE(ENABLE_CHECKS)
)

dnl Automake configuration
AM_CONFIG_HEADER(config.h)
AM_INIT_AUTOMAKE(helmpot, $HELMPOT_VERSION)

dnl Checks for programs.
AC_LANG_C
AC_PROG_CC
AC_ISC_POSIX
AC_CHECK_PROG(HAVE_COLORGCC, colorgcc, yes, no)

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(unistd.h)
AC_FUNC_VFORK

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST

dnl Check for iconv with const pointer as second argument
AC_LANG_C

dnl Checks for libraries
AM_PATH_GTK(1.2.0, gtklib="yes", gtklib="no")

if test $gtklib = "no"; then
	AC_MSG_ERROR(GTK is needed in order to use helmpot)
fi

AC_CHECK_PROG(HAVE_GTKMATHVIEW_CONFIG, gtkmathview-config, yes, no)
if test $HAVE_GTKMATHVIEW_CONFIG = "no"; then
	AC_MSG_ERROR(gtkmathview is required)
fi

GTKMATHVIEW_MIN_VERSION=0.3.0
AC_MSG_CHECKING(for gtkmathview >= $GTKMATHVIEW_MIN_VERSION)
vers=`gtkmathview-config --version | awk -F. '{ printf "%d", ($1 * 1000 + $2) * 1000 + $3;}'`
minvers=`echo $GTKMATHVIEW_MIN_VERSION | awk -F. '{ printf "%d", ($1 * 1000 + $2) * 1000 + $3;}'`
if test "$vers" -lt "$minvers"; then
	AC_MSG_RESULT(not found)
	AC_MSG_ERROR(gtkmathview >= $GTKMATHVIEW_MIN_VERSION is required)
else
	AC_MSG_RESULT(found)
fi

CFLAGS="$CFLAGS `gtkmathview-config --cflags`"
CXXFLAGS="$CXXFLAGS `gtkmathview-config --cflags`"
LIBS="$LIBS `gtkmathview-config --libs`"

if test $HAVE_COLORGCC = "yes"; then
	CC=colorgcc
	CXX=colorgcc
fi

CFLAGS="$CFLAGS -W -Wall"
CXXFLAGS="$CXXFLAGS -W -Wall"

AC_OUTPUT([
Makefile
helmpot.spec
])