mingw/gettext/gettext-tools/examples/hello-c++-qt/m4/qt.m4 - kiwivm - Git at Google

 # Copyright (C) 2001 David Johnson
 # This file is free software; the author gives unlimited permission to  copy
 # and/or distribute it, with or without modifications, as long as this notice
 # is preserved.

 # FUN_TYPE BOOL
 # check for a built-in bool type
 # HAVE_BOOL will be defined in the config header

 AC_DEFUN([FUN_TYPE_BOOL],
 [
   AC_REQUIRE([AC_PROG_CXX])

   AC_LANG_PUSH(C++)
   AC_CHECK_TYPE(bool, ac_check_bool=yes, ac_check_bool=no)
   AC_LANG_POP(C++)
   if test "x$ac_check_bool" = "xyes" ; then
     AC_DEFINE(HAVE_BOOL,,[define if bool is a built-in type])
   fi

   AH_BOTTOM([#ifndef HAVE_BOOL])
   AH_BOTTOM([enum booltyp { false, true }; typedef enum booltyp bool;])
   AH_BOTTOM([#endif])
 ])# FUN_TYPE_BOOL

 # FUN_HEADER_STDCXX
 # check for standard ISO C++ headers

 AC_DEFUN([FUN_HEADER_STDCXX],
 [
   AC_REQUIRE([AC_PROG_CXX])

   AC_LANG_PUSH(C++)

   ac_check_headers=no
   AC_CHECK_HEADER(cstdlib,
       ac_check_headers=yes,
       ac_check_headers=no)
   AC_CHECK_HEADER(cstring,
       ac_check_headers=$ac_check_headers,
       ac_check_headers=no)
   AC_CHECK_HEADER(iostream,
       ac_check_headers=$ac_check_headers,
       ac_check_headers=no)

   AC_LANG_POP(C++)

   if test "x$ac_check_headers" = "xno" ; then
     AC_MSG_ERROR(standard ISO C++ headers not found!)
   fi
 ])#FUN_HEADER_STDCXX

 # FUN_CHECK_PTHREAD
 # check for posix pthreads
 # sets PTHREAD_LIBS and PTHREAD_CFLAGS
 # sets HAVE_PTHREADS in the configuration header

 AC_DEFUN([FUN_CHECK_PTHREAD],
 [
   AC_REQUIRE([AC_CANONICAL_HOST])
   AC_REQUIRE([AC_PROG_CC])

   PTHREAD_LIBS=""
   PTHREAD_CFLAGS=""

   AC_ARG_ENABLE(threads, AC_HELP_STRING([--enable-threads],
                                 [enable the use of the threads [[default=no]]]),
     ac_use_threads=$enableval, ac_use_threads=no)

   if test "x$ac_use_threads" = "xyes" ; then

     AC_CHECK_HEADER(pthread.h, ac_posix_threads=yes, ac_posix_threads=no)

     if test "x$ac_posix_threads" = "xyes" ; then

       AC_MSG_CHECKING([whether ${CC} accepts -pthread])
       ac_cflags_save="$CFLAGS"
       CFLAGS="$CFLAGS -pthread"
       AC_TRY_COMPILE([#include <pthread.h>], [pthread_attr_init(0)],
         ac_cc_pthread=yes, ac_cc_pthread=no)
       CFLAGS="$ac_cflags_save"

       if test "x$ac_cc_pthread" = "xyes" ; then
         AC_MSG_RESULT([yes])
         PTHREAD_CFLAGS="-pthread"
       else
         AC_MSG_RESULT([no])
         ac_thread_library=none

         if test "x$ac_thread_library" = "xnone" ; then
           AC_CHECK_LIB(c_r, pthread_self, ac_thread_library=c_r)
         fi
         if test "x$ac_thread_library" = "xnone" ; then
           AC_CHECK_LIB(pthread, pthread_self, ac_thread_library=pthread)
         fi
         if test "x$ac_thread_library" = "xnone" ; then
           AC_CHECK_LIB(pthreads, pthread_self, ac_thread_library=pthreads)
         fi
         if test "x$ac_thread_library" = "xnone" ; then
           AC_CHECK_LIB(thread, pthread_self, ac_thread_library=thread)
         fi
         if test "x$ac_thread_library" = "xnone" ; then
           AC_CHECK_LIB(gthreads, pthread_self, ac_thread_library=gthreads)
         fi
         if test "x$ac_thread_library" = "xnone" ; then
           AC_CHECK_LIB(c, pthread_self, ac_thread_library=c)
         fi
         if test "x$ac_thread_library" = "xnone" ; then
           ac_use_threads=no
         else
           PTHREAD_LIBS="-l$ac_thread_library"
         fi
       fi
     else
       ac_use_threads=no
     fi
   fi

   if test "x$ac_use_threads" = "xyes" ; then
     AC_DEFINE(HAVE_PTHREAD, 1, [Define if you have POSIX threads])
     case $host_os in
       aix* | freebsd*)
         PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_THREAD_SAFE"
         ;;
       linux* | solaris*)
         PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_REENTRANT"
         ;;
       *)
         ;;
     esac
   fi
 ])#FUN_CHECK_PTHREAD

 # FUN_CHECK_QT([qt_min_version],[qt_max_version])
 # check for qt headers, libs, progs and compilation
 # substs QT_CXXFLAGS, QT_LDFLAGS, and QT_LIBS
 # substs QTVERSION, MOC and UIC
 # LIBQT, MOC and UIC 'precious' variables

 AC_DEFUN([FUN_CHECK_QT],
 [
   AC_REQUIRE([AC_PROG_CXX])
   AC_REQUIRE([AC_PATH_X])
   AC_REQUIRE([AC_PATH_XTRA])
   AC_REQUIRE([FUN_CHECK_PTHREAD])

   # some 'precious' variables for configure --help
   AC_ARG_VAR(QTMIN, minimum version of Qt to search for  e.g. 220)
   AC_ARG_VAR(QTMAX, maximum version of Qt to search for  e.g. 399)
   AC_ARG_VAR(LIBQT, library flag for the Qt libary  e.g. -lqt)
   AC_ARG_VAR(MOC, QT meta object compiler command)
   AC_ARG_VAR(UIC, Qt UI compiler command)

   AC_CACHE_SAVE

   AC_MSG_NOTICE([checking for Qt])

   # process our args
   if test -z "$1" ; then
     qt_min_version=0
   else
     qt_min_version=$1
   fi
   if test -z "$2" ; then
     qt_max_version=9999
   else
     qt_max_version=$2
   fi
   # adjust for user preferences
   if test "x$QTMIN" != "x" ; then
     if expr $QTMIN '>' $qt_min_version > /dev/null ; then
       qt_min_version=$QTMIN;
     fi
   fi
   if test "x$QTMAX" != "x" ; then
     if expr $QTMAX '<' $qt_max_version > /dev/null ; then
       qt_max_version=$QTMAX;
     fi
   fi

   # set up our configuration options
   qt_dir=""
   qt_includes=""
   qt_libraries=""
   qt_programs=""
   AC_ARG_WITH([qt_dir], AC_HELP_STRING([--with-qt-dir=DIR],
                         [where the Qt package is installed]),
     [ qt_dir="$withval"
       qt_includes="$withval"/include
       qt_libraries="$withval"/lib
       qt_programs="$withval"/bin
     ])
   AC_ARG_WITH([qt_includes], AC_HELP_STRING([--with-qt-includes=DIR],
                              [where the Qt includes are installed]),
     [qt_includes="$withval"])
   AC_ARG_WITH([qt_libraries], AC_HELP_STRING([--with-qt-libraries=DIR],
                               [where the Qt libraries are installed]),
     [qt_libraries="$withval"])
   AC_ARG_WITH([qt_programs], AC_HELP_STRING([--with-qt-programs=DIR],
                              [where the Qt programs are installed]),
     [qt_programs="$withval"])

   QTVERSION="000"

   FUN_QT_HEADERS

   # check for a traditional qt installation tree
   if ls $qt_includes/../lib/libqt* > /dev/null 2> /dev/null; then
     qt_dir="`echo $qt_includes | sed s,'/include',,`"
     qt_libraries="$qt_dir/lib"
     qt_programs="$qt_dir/bin"
   fi

   FUN_QT_LIBRARIES
   FUN_QT_PROGRAMS
   FUN_QT_COMPILE

   AC_MSG_NOTICE([Found Qt version $QTVERSION])

   AC_SUBST(QTVERSION)
   AC_SUBST(MOC)
   AC_SUBST(UIC)
   QT_CXXFLAGS="-I$qt_includes"
   AC_SUBST(QT_CXXFLAGS)
   QT_LDFLAGS="-L$qt_libraries"
   AC_SUBST(QT_LDFLAGS)
   QT_LIBS="$LIBQT"
   AC_SUBST(QT_LIBS)
 ])#FUN_CHECK_QT

 # FUN_QT_HEADERS
 # helper function for FUN_CHECK_QT
 # check for qt headers in standard locations

 AC_DEFUN([FUN_QT_HEADERS],
 [
   AC_MSG_CHECKING([for Qt headers])

   if test "x$qt_includes" = "x" ; then
     # look in standard locations
     qt_found_dirs=""
     qt_include_dirs="
       $QTDIR
       /usr/include
       /usr/local/include
       /usr/X11R6/include
       `ls -dr /usr/include/qt* 2>/dev/null`
       `ls -dr /usr/local/include/qt* 2>/dev/null`
       `ls -dr /usr/X11R6/include/qt* 2>/dev/null`
       `ls -dr /usr/lib/qt*/include 2>/dev/null`
       `ls -dr /usr/local/lib/qt*/include 2>/dev/null`
       `ls -dr /usr/X11R6/lib/qt*/include 2>/dev/null`
       `ls -dr /usr/local/qt*/include 2>/dev/null`
       `ls -dr /opt/qt*/include 2>/dev/null` "
     for n in $qt_include_dirs ; do
       if test -r "$n/qglobal.h"; then
         qt_found_dirs="$qt_found_dirs $n"
       fi
     done

     # find the latest version between min_version and max_version
     qt_prev_version=$qt_min_version
     qt_found_version=""
     for n in $qt_found_dirs ; do
       qt_current_version=`grep -w '#define QT_VERSION' $n/qglobal.h |
         sed s/'#define QT_VERSION'//`
       if expr $qt_current_version '>=' $qt_prev_version > /dev/null ; then
         if expr $qt_current_version '<=' $qt_max_version > /dev/null ; then
           qt_includes=$n
           qt_prev_version=$qt_current_version
         fi
       fi
     done
   fi

   if test "x$qt_includes" = "x" ; then
     AC_MSG_RESULT([no])
     AC_MSG_ERROR([cannot find correct Qt headers!])
   else
     dnl TODO need to strip out white space
     QTVERSION=$qt_prev_version;
     AC_MSG_RESULT([$qt_includes])
   fi
 ])#FUN_QT_HEADERS

 # FUN_QT_LIBRARIES
 # helper function for FUN_CHECK_QT
 # check for qt libs in standard locations

 AC_DEFUN([FUN_QT_LIBRARIES],
 [
   AC_REQUIRE([FUN_QT_HEADERS])

   AC_MSG_CHECKING([for Qt libraries])

   # check which library to look for
   if test -z "$LIBQT" ; then
     if test "x$ac_use_threads" = "xyes" ; then
       LIBQT="-lqt-mt"
     else
       LIBQT="-lqt"
     fi
   fi

   lib_qt=`echo $LIBQT | sed s/'-l'//`

   if test "x$qt_libraries" = "x" ; then
     # see if it is relative to the includes
     qt_tree="$qt_includes"
     while test "x$qt_tree" != "x" ; do
       # first go around will fail...
       if ls $qt_tree/lib/libqt* > /dev/null 2> /dev/null ; then
         qt_libraries=$qt_tree/lib
         break
       else
         # lop off tail of path
         dnl not as portable as it should be...
         qt_tree="`dirname $qt_tree`"
       fi
     done
   fi

   if test "x$qt_libraries" = "x" ; then
     AC_MSG_RESULT([no])
     AC_MSG_ERROR([cannot find Qt libraries!])
   else
     # check that we're looking at the right library
     if ls $qt_libraries/lib$lib_qt.* > /dev/null 2> /dev/null ; then
       AC_MSG_RESULT([$qt_libraries])
     else
       AC_MSG_RESULT([no])
       if test "x$ac_use_threads" = "xyes" ; then
         AC_MSG_ERROR([cannot find the threaded Qt library in $qt_libraries!])
       else
         AC_MSG_ERROR([cannot find the non-threaded Qt library in $qt_libraries!])
       fi
     fi
   fi
 ])#FUN_QT_LIBRARIES

 # FUN_QT_PROGRAMS
 # helper function for FUN_CHECK_QT
 # searches for moc and uic

 AC_DEFUN([FUN_QT_PROGRAMS],
 [
   AC_REQUIRE([FUN_QT_LIBRARIES])

   AC_MSG_CHECKING([for Qt utilities])

   if test "x$q_programs" = "x" ; then
     # see if it is relative to the libraries
     qt_tree="$qt_libraries"
     while test "x$qt_tree" != "x" ; do
       # first go around will fail
       if ls $qt_tree/bin/moc* > /dev/null 2> /dev/null ; then
         qt_programs=$qt_tree/bin
         break
       else
         # lop off tail of path
         dnl not as portable as it should be...
         qt_tree="`dirname $qt_tree`"
       fi
     done
     # if we haven't found the progs, there's not much more we can do
   fi

   if test "x$qt_programs" = "x" ; then
     AC_MSG_RESULT([no])
     AC_MSG_ERROR([cannot find Qt utilities!])
   else
     AC_MSG_RESULT([$qt_programs])
     # find the right moc
     if test -z "$MOC" ; then
       AC_CHECK_PROG(MOC, moc, moc)
       if test "x$MOC" = "x" ; then
         # could be renamed to avoid clashes
         if ls $qt_programs/moc > /dev/null 2> /dev/null ; then
           MOC="$qt_programs/moc"
         else
           if expr "$QTVERSION" '>=' "200" > /dev/null ; then
             if ls $qt_programs/moc2 > /dev/null 2> /dev/null ; then
               MOC="$qt_programs/moc2"
             fi
           else
             if expr "$QTVERSION" '>=' "300" > /dev/null ; then
               if $qt_programs/moc3 > /dev/null 2> /dev/null ; then
                 MOC="$qt_programs/moc3"
               fi
             fi
           fi
         fi
       fi
       if test "x$MOC" = "x" ; then
         AC_MSG_RESULT([no])
         AC_MSG_ERROR([cannot find Qt meta object compiler!])
       fi
     fi

     # find the right uic
     if expr "$QTVERSION" '>=' "220" > /dev/null ; then
       if test -z "$UIC" ; then
         AC_CHECK_PROG(UIC, uic, uic)
         if test "x$UIC" = "x" ; then
           # could be renamed to avoid clashes
           if ls $qt_programs/uic > /dev/null 2> /dev/null ; then
             UIC="$qt_programs/uic"
           else
             if expr "$QTVERSION" '>=' "300" > /dev/null ; then
               if ls $qt_programs/uic3 > /dev/null 2> /dev/null ; then
                 UIC="$qt_programs/uic3"
               fi
             fi
           fi
         fi
       fi
     else
       # if uic is important to the build, change this
       UIC=""
     fi
   fi
 ])#FUN_QT_PROGRAMS

 # FUN_QT_COMPILE
 # helper function for FUN_CHECK_QT
 # compile a simple qt program

 AC_DEFUN([FUN_QT_COMPILE],
 [
   AC_REQUIRE([FUN_QT_HEADERS])
   AC_REQUIRE([FUN_QT_LIBRARIES])
   AC_REQUIRE([FUN_QT_PROGRAMS])

   AC_MSG_CHECKING([whether a simple Qt program compiles])

   AC_LANG_PUSH(C++)

   ac_cxxflags_save="$CXXFLAGS"
   ac_ldflags_save="$LDFLAGS"
   ac_libs_save="$LIBS"
   CXXFLAGS="$CXXFLAGS $PTHREAD_CFLAGS -I$qt_includes $X_CFLAGS $all_includes"
   LDFLAGS="$LDFLAGS -L$qt_libraries $X_LIBS "
   LIBS="$LIBS $PTHREAD_LIBS $X_PRE_LIBS $X_EXTRA_LIBS -lXext -lX11 $LIBQT"

   AC_TRY_LINK([
     #include <qglobal.h>
     #include <qmessagebox.h>
     #include <qstring.h>],
     [QString s = "hello world";
     QMessageBox::information(0, s, "no he is not");
     return 0;],
   qt_compile=yes, qt_compile=no)

   CXXFLAGS="$ac_cxxflags_save"
   LDFLAGS="$ac_ldflags_save"
   LIBS="$ac_libs_save"

   AC_LANG_POP(C++)

   if test "x$qt_compile" = "xyes" ; then
     AC_MSG_RESULT([yes])
   else
     AC_MSG_RESULT([no])
     AC_MSG_ERROR([cannot compile a Qt program!])
   fi
 ])#FUN_QT_COMPILE
	# Copyright (C) 2001 David Johnson
	# This file is free software; the author gives unlimited permission to copy
	# and/or distribute it, with or without modifications, as long as this notice
	# is preserved.

	# FUN_TYPE BOOL
	# check for a built-in bool type
	# HAVE_BOOL will be defined in the config header

	AC_DEFUN([FUN_TYPE_BOOL],
	[
	AC_REQUIRE([AC_PROG_CXX])

	AC_LANG_PUSH(C++)
	AC_CHECK_TYPE(bool, ac_check_bool=yes, ac_check_bool=no)
	AC_LANG_POP(C++)
	if test "x$ac_check_bool" = "xyes" ; then
	AC_DEFINE(HAVE_BOOL,,[define if bool is a built-in type])
	fi

	AH_BOTTOM([#ifndef HAVE_BOOL])
	AH_BOTTOM([enum booltyp { false, true }; typedef enum booltyp bool;])
	AH_BOTTOM([#endif])
	])# FUN_TYPE_BOOL

	# FUN_HEADER_STDCXX
	# check for standard ISO C++ headers

	AC_DEFUN([FUN_HEADER_STDCXX],
	[
	AC_REQUIRE([AC_PROG_CXX])

	AC_LANG_PUSH(C++)

	ac_check_headers=no
	AC_CHECK_HEADER(cstdlib,
	ac_check_headers=yes,
	ac_check_headers=no)
	AC_CHECK_HEADER(cstring,
	ac_check_headers=$ac_check_headers,
	ac_check_headers=no)
	AC_CHECK_HEADER(iostream,
	ac_check_headers=$ac_check_headers,
	ac_check_headers=no)

	AC_LANG_POP(C++)

	if test "x$ac_check_headers" = "xno" ; then
	AC_MSG_ERROR(standard ISO C++ headers not found!)
	fi
	])#FUN_HEADER_STDCXX

	# FUN_CHECK_PTHREAD
	# check for posix pthreads
	# sets PTHREAD_LIBS and PTHREAD_CFLAGS
	# sets HAVE_PTHREADS in the configuration header

	AC_DEFUN([FUN_CHECK_PTHREAD],
	[
	AC_REQUIRE([AC_CANONICAL_HOST])
	AC_REQUIRE([AC_PROG_CC])

	PTHREAD_LIBS=""
	PTHREAD_CFLAGS=""

	AC_ARG_ENABLE(threads, AC_HELP_STRING([--enable-threads],
	[enable the use of the threads [[default=no]]]),
	ac_use_threads=$enableval, ac_use_threads=no)

	if test "x$ac_use_threads" = "xyes" ; then

	AC_CHECK_HEADER(pthread.h, ac_posix_threads=yes, ac_posix_threads=no)

	if test "x$ac_posix_threads" = "xyes" ; then

	AC_MSG_CHECKING([whether ${CC} accepts -pthread])
	ac_cflags_save="$CFLAGS"
	CFLAGS="$CFLAGS -pthread"
	AC_TRY_COMPILE([#include <pthread.h>], [pthread_attr_init(0)],
	ac_cc_pthread=yes, ac_cc_pthread=no)
	CFLAGS="$ac_cflags_save"

	if test "x$ac_cc_pthread" = "xyes" ; then
	AC_MSG_RESULT([yes])
	PTHREAD_CFLAGS="-pthread"
	else
	AC_MSG_RESULT([no])
	ac_thread_library=none

	if test "x$ac_thread_library" = "xnone" ; then
	AC_CHECK_LIB(c_r, pthread_self, ac_thread_library=c_r)
	fi
	if test "x$ac_thread_library" = "xnone" ; then
	AC_CHECK_LIB(pthread, pthread_self, ac_thread_library=pthread)
	fi
	if test "x$ac_thread_library" = "xnone" ; then
	AC_CHECK_LIB(pthreads, pthread_self, ac_thread_library=pthreads)
	fi
	if test "x$ac_thread_library" = "xnone" ; then
	AC_CHECK_LIB(thread, pthread_self, ac_thread_library=thread)
	fi
	if test "x$ac_thread_library" = "xnone" ; then
	AC_CHECK_LIB(gthreads, pthread_self, ac_thread_library=gthreads)
	fi
	if test "x$ac_thread_library" = "xnone" ; then
	AC_CHECK_LIB(c, pthread_self, ac_thread_library=c)
	fi
	if test "x$ac_thread_library" = "xnone" ; then
	ac_use_threads=no
	else
	PTHREAD_LIBS="-l$ac_thread_library"
	fi
	fi
	else
	ac_use_threads=no
	fi
	fi

	if test "x$ac_use_threads" = "xyes" ; then
	AC_DEFINE(HAVE_PTHREAD, 1, [Define if you have POSIX threads])
	case $host_os in
	aix* \| freebsd*)
	PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_THREAD_SAFE"
	;;
	linux* \| solaris*)
	PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_REENTRANT"
	;;
	*)
	;;
	esac
	fi
	])#FUN_CHECK_PTHREAD

	# FUN_CHECK_QT([qt_min_version],[qt_max_version])
	# check for qt headers, libs, progs and compilation
	# substs QT_CXXFLAGS, QT_LDFLAGS, and QT_LIBS
	# substs QTVERSION, MOC and UIC
	# LIBQT, MOC and UIC 'precious' variables

	AC_DEFUN([FUN_CHECK_QT],
	[
	AC_REQUIRE([AC_PROG_CXX])
	AC_REQUIRE([AC_PATH_X])
	AC_REQUIRE([AC_PATH_XTRA])
	AC_REQUIRE([FUN_CHECK_PTHREAD])

	# some 'precious' variables for configure --help
	AC_ARG_VAR(QTMIN, minimum version of Qt to search for e.g. 220)
	AC_ARG_VAR(QTMAX, maximum version of Qt to search for e.g. 399)
	AC_ARG_VAR(LIBQT, library flag for the Qt libary e.g. -lqt)
	AC_ARG_VAR(MOC, QT meta object compiler command)
	AC_ARG_VAR(UIC, Qt UI compiler command)

	AC_CACHE_SAVE

	AC_MSG_NOTICE([checking for Qt])

	# process our args
	if test -z "$1" ; then
	qt_min_version=0
	else
	qt_min_version=$1
	fi
	if test -z "$2" ; then
	qt_max_version=9999
	else
	qt_max_version=$2
	fi
	# adjust for user preferences
	if test "x$QTMIN" != "x" ; then
	if expr $QTMIN '>' $qt_min_version > /dev/null ; then
	qt_min_version=$QTMIN;
	fi
	fi
	if test "x$QTMAX" != "x" ; then
	if expr $QTMAX '<' $qt_max_version > /dev/null ; then
	qt_max_version=$QTMAX;
	fi
	fi

	# set up our configuration options
	qt_dir=""
	qt_includes=""
	qt_libraries=""
	qt_programs=""
	AC_ARG_WITH([qt_dir], AC_HELP_STRING([--with-qt-dir=DIR],
	[where the Qt package is installed]),
	[ qt_dir="$withval"
	qt_includes="$withval"/include
	qt_libraries="$withval"/lib
	qt_programs="$withval"/bin
	])
	AC_ARG_WITH([qt_includes], AC_HELP_STRING([--with-qt-includes=DIR],
	[where the Qt includes are installed]),
	[qt_includes="$withval"])
	AC_ARG_WITH([qt_libraries], AC_HELP_STRING([--with-qt-libraries=DIR],
	[where the Qt libraries are installed]),
	[qt_libraries="$withval"])
	AC_ARG_WITH([qt_programs], AC_HELP_STRING([--with-qt-programs=DIR],
	[where the Qt programs are installed]),
	[qt_programs="$withval"])

	QTVERSION="000"

	FUN_QT_HEADERS

	# check for a traditional qt installation tree
	if ls $qt_includes/../lib/libqt* > /dev/null 2> /dev/null; then
	qt_dir="`echo $qt_includes \| sed s,'/include',,`"
	qt_libraries="$qt_dir/lib"
	qt_programs="$qt_dir/bin"
	fi

	FUN_QT_LIBRARIES
	FUN_QT_PROGRAMS
	FUN_QT_COMPILE

	AC_MSG_NOTICE([Found Qt version $QTVERSION])

	AC_SUBST(QTVERSION)
	AC_SUBST(MOC)
	AC_SUBST(UIC)
	QT_CXXFLAGS="-I$qt_includes"
	AC_SUBST(QT_CXXFLAGS)
	QT_LDFLAGS="-L$qt_libraries"
	AC_SUBST(QT_LDFLAGS)
	QT_LIBS="$LIBQT"
	AC_SUBST(QT_LIBS)
	])#FUN_CHECK_QT

	# FUN_QT_HEADERS
	# helper function for FUN_CHECK_QT
	# check for qt headers in standard locations

	AC_DEFUN([FUN_QT_HEADERS],
	[
	AC_MSG_CHECKING([for Qt headers])

	if test "x$qt_includes" = "x" ; then
	# look in standard locations
	qt_found_dirs=""
	qt_include_dirs="
	$QTDIR
	/usr/include
	/usr/local/include
	/usr/X11R6/include
	`ls -dr /usr/include/qt* 2>/dev/null`
	`ls -dr /usr/local/include/qt* 2>/dev/null`
	`ls -dr /usr/X11R6/include/qt* 2>/dev/null`
	`ls -dr /usr/lib/qt*/include 2>/dev/null`
	`ls -dr /usr/local/lib/qt*/include 2>/dev/null`
	`ls -dr /usr/X11R6/lib/qt*/include 2>/dev/null`
	`ls -dr /usr/local/qt*/include 2>/dev/null`
	`ls -dr /opt/qt*/include 2>/dev/null` "
	for n in $qt_include_dirs ; do
	if test -r "$n/qglobal.h"; then
	qt_found_dirs="$qt_found_dirs $n"
	fi
	done

	# find the latest version between min_version and max_version
	qt_prev_version=$qt_min_version
	qt_found_version=""
	for n in $qt_found_dirs ; do
	qt_current_version=`grep -w '#define QT_VERSION' $n/qglobal.h \|
	sed s/'#define QT_VERSION'//`
	if expr $qt_current_version '>=' $qt_prev_version > /dev/null ; then
	if expr $qt_current_version '<=' $qt_max_version > /dev/null ; then
	qt_includes=$n
	qt_prev_version=$qt_current_version
	fi
	fi
	done
	fi

	if test "x$qt_includes" = "x" ; then
	AC_MSG_RESULT([no])
	AC_MSG_ERROR([cannot find correct Qt headers!])
	else
	dnl TODO need to strip out white space
	QTVERSION=$qt_prev_version;
	AC_MSG_RESULT([$qt_includes])
	fi
	])#FUN_QT_HEADERS

	# FUN_QT_LIBRARIES
	# helper function for FUN_CHECK_QT
	# check for qt libs in standard locations

	AC_DEFUN([FUN_QT_LIBRARIES],
	[
	AC_REQUIRE([FUN_QT_HEADERS])

	AC_MSG_CHECKING([for Qt libraries])

	# check which library to look for
	if test -z "$LIBQT" ; then
	if test "x$ac_use_threads" = "xyes" ; then
	LIBQT="-lqt-mt"
	else
	LIBQT="-lqt"
	fi
	fi

	lib_qt=`echo $LIBQT \| sed s/'-l'//`

	if test "x$qt_libraries" = "x" ; then
	# see if it is relative to the includes
	qt_tree="$qt_includes"
	while test "x$qt_tree" != "x" ; do
	# first go around will fail...
	if ls $qt_tree/lib/libqt* > /dev/null 2> /dev/null ; then
	qt_libraries=$qt_tree/lib
	break
	else
	# lop off tail of path
	dnl not as portable as it should be...
	qt_tree="`dirname $qt_tree`"
	fi
	done
	fi

	if test "x$qt_libraries" = "x" ; then
	AC_MSG_RESULT([no])
	AC_MSG_ERROR([cannot find Qt libraries!])
	else
	# check that we're looking at the right library
	if ls $qt_libraries/lib$lib_qt.* > /dev/null 2> /dev/null ; then
	AC_MSG_RESULT([$qt_libraries])
	else
	AC_MSG_RESULT([no])
	if test "x$ac_use_threads" = "xyes" ; then
	AC_MSG_ERROR([cannot find the threaded Qt library in $qt_libraries!])
	else
	AC_MSG_ERROR([cannot find the non-threaded Qt library in $qt_libraries!])
	fi
	fi
	fi
	])#FUN_QT_LIBRARIES

	# FUN_QT_PROGRAMS
	# helper function for FUN_CHECK_QT
	# searches for moc and uic

	AC_DEFUN([FUN_QT_PROGRAMS],
	[
	AC_REQUIRE([FUN_QT_LIBRARIES])

	AC_MSG_CHECKING([for Qt utilities])

	if test "x$q_programs" = "x" ; then
	# see if it is relative to the libraries
	qt_tree="$qt_libraries"
	while test "x$qt_tree" != "x" ; do
	# first go around will fail
	if ls $qt_tree/bin/moc* > /dev/null 2> /dev/null ; then
	qt_programs=$qt_tree/bin
	break
	else
	# lop off tail of path
	dnl not as portable as it should be...
	qt_tree="`dirname $qt_tree`"
	fi
	done
	# if we haven't found the progs, there's not much more we can do
	fi

	if test "x$qt_programs" = "x" ; then
	AC_MSG_RESULT([no])
	AC_MSG_ERROR([cannot find Qt utilities!])
	else
	AC_MSG_RESULT([$qt_programs])
	# find the right moc
	if test -z "$MOC" ; then
	AC_CHECK_PROG(MOC, moc, moc)
	if test "x$MOC" = "x" ; then
	# could be renamed to avoid clashes
	if ls $qt_programs/moc > /dev/null 2> /dev/null ; then
	MOC="$qt_programs/moc"
	else
	if expr "$QTVERSION" '>=' "200" > /dev/null ; then
	if ls $qt_programs/moc2 > /dev/null 2> /dev/null ; then
	MOC="$qt_programs/moc2"
	fi
	else
	if expr "$QTVERSION" '>=' "300" > /dev/null ; then
	if $qt_programs/moc3 > /dev/null 2> /dev/null ; then
	MOC="$qt_programs/moc3"
	fi
	fi
	fi
	fi
	fi
	if test "x$MOC" = "x" ; then
	AC_MSG_RESULT([no])
	AC_MSG_ERROR([cannot find Qt meta object compiler!])
	fi
	fi

	# find the right uic
	if expr "$QTVERSION" '>=' "220" > /dev/null ; then
	if test -z "$UIC" ; then
	AC_CHECK_PROG(UIC, uic, uic)
	if test "x$UIC" = "x" ; then
	# could be renamed to avoid clashes
	if ls $qt_programs/uic > /dev/null 2> /dev/null ; then
	UIC="$qt_programs/uic"
	else
	if expr "$QTVERSION" '>=' "300" > /dev/null ; then
	if ls $qt_programs/uic3 > /dev/null 2> /dev/null ; then
	UIC="$qt_programs/uic3"
	fi
	fi
	fi
	fi
	fi
	else
	# if uic is important to the build, change this
	UIC=""
	fi
	fi
	])#FUN_QT_PROGRAMS

	# FUN_QT_COMPILE
	# helper function for FUN_CHECK_QT
	# compile a simple qt program

	AC_DEFUN([FUN_QT_COMPILE],
	[
	AC_REQUIRE([FUN_QT_HEADERS])
	AC_REQUIRE([FUN_QT_LIBRARIES])
	AC_REQUIRE([FUN_QT_PROGRAMS])

	AC_MSG_CHECKING([whether a simple Qt program compiles])

	AC_LANG_PUSH(C++)

	ac_cxxflags_save="$CXXFLAGS"
	ac_ldflags_save="$LDFLAGS"
	ac_libs_save="$LIBS"
	CXXFLAGS="$CXXFLAGS $PTHREAD_CFLAGS -I$qt_includes $X_CFLAGS $all_includes"
	LDFLAGS="$LDFLAGS -L$qt_libraries $X_LIBS "
	LIBS="$LIBS $PTHREAD_LIBS $X_PRE_LIBS $X_EXTRA_LIBS -lXext -lX11 $LIBQT"

	AC_TRY_LINK([
	#include <qglobal.h>
	#include <qmessagebox.h>
	#include <qstring.h>],
	[QString s = "hello world";
	QMessageBox::information(0, s, "no he is not");
	return 0;],
	qt_compile=yes, qt_compile=no)

	CXXFLAGS="$ac_cxxflags_save"
	LDFLAGS="$ac_ldflags_save"
	LIBS="$ac_libs_save"

	AC_LANG_POP(C++)

	if test "x$qt_compile" = "xyes" ; then
	AC_MSG_RESULT([yes])
	else
	AC_MSG_RESULT([no])
	AC_MSG_ERROR([cannot compile a Qt program!])
	fi
	])#FUN_QT_COMPILE