# Check for Qt compiler flags, linker flags, and binary packages

AC_DEFUN([gw_CHECK_QT],

[

AC_REQUIRE([AC_PROG_CXX])

AC_REQUIRE([AC_PATH_X])

AC_MSG_CHECKING([QTDIR])

AC_ARG_WITH([qtdir], [  --with-qtdir=DIR        Qt installation directory [default=$QTDIR]], QTDIR=$withval)

# Check that QTDIR is defined or that --with-qtdir given

if test x"$QTDIR" = x ; then

    QT_SEARCH="/usr/lib64/qt31 /usr/local/lib64/qt31 /usr/lib64/qt3 /usr/local/qt64/qt3 /usr/lib/qt31 /usr/local/qt31 /usr/lib/qt3 /usr/local/qt3 /usr/lib/qt2 /usr/local/qt2 /usr/lib/qt /usr/local/qt"

    for i in $QT_SEARCH; do

        if test -f $i/include/qglobal.h -a x$QTDIR = x; then QTDIR=$i; fi

    done

fi

if test x"$QTDIR" = x ; then

    AC_MSG_ERROR([*** QTDIR must be defined, or --with-qtdir option given])

fi

AC_MSG_RESULT([$QTDIR])

AC_MSG_CHECKING([QTFORCE32])

AC_ARG_ENABLE([qtforce32], [  --enable-qtforce32      Force search for 32-bit Qt libraries], [QTFORCE32="$enableval"], [QTFORCE32="no"])

AC_MSG_RESULT([$QTFORCE32])

# Change backslashes in QTDIR to forward slashes to prevent escaping

# problems later on in the build process, mainly for Cygwin build

# environment using MSVC as the compiler

# TODO: Use sed instead of perl

QTDIR=`echo $QTDIR | perl -p -e 's/\\\\/\\//g'`

# Figure out which version of Qt we are using

AC_MSG_CHECKING([Qt version])

QT_VER=`grep 'define.*QT_VERSION_STR\W' $QTDIR/include/qglobal.h | perl -p -e 's/\D//g'`

case "${QT_VER}" in

    2*)

        QT_MAJOR="2"

    ;;

    3*)

        QT_MAJOR="3"

    ;;

    *)

        AC_MSG_ERROR([*** Don't know how to handle this Qt major version])

    ;;

esac

AC_MSG_RESULT([$QT_VER ($QT_MAJOR)])

# Check that moc is in path

AC_PATH_PROG([MOC], [moc], [$QTDIR/bin/moc], [$PATH:$QTDIR/bin])

if test x$MOC = x ; then

        AC_MSG_ERROR([*** moc must be in path])

fi

# uic is the Qt user interface compiler

AC_PATH_PROG([UIC], [uic], [$QTDIR/bin/uic], [$PATH:$QTDIR/bin])

if test x$UIC = x ; then

        AC_MSG_ERROR([*** uic must be in path])

fi

# qembed is the Qt data embedding utility.

# It is located in $QTDIR/tools/qembed, and must be compiled and installed

# manually, we'll let it slide if it isn't present

AC_PATH_PROG([QEMBED], [qembed], [$QTDIR/bin/qembed], [$PATH:$QTDIR/bin])

# Calculate Qt include path

QT_CXXFLAGS="-I$QTDIR/include"

QT_IS_EMBEDDED="no"

QT_LIB_DIR="lib"

# On unix, figure out if we're doing a static or dynamic link

case "${host}" in

    *-cygwin)

	AC_DEFINE_UNQUOTED(WIN32, "", Defined if on Win32 platform)

        if test -f "$QTDIR/lib/qt.lib" ; then

            QT_LIB="qt.lib"

            QT_IS_STATIC="yes"

            QT_IS_MT="no"

        elif test -f "$QTDIR/lib/qt-mt.lib" ; then

            QT_LIB="qt-mt.lib" 

            QT_IS_STATIC="yes"

            QT_IS_MT="yes"

        elif test -f "$QTDIR/lib/qt$QT_VER.lib" ; then

            QT_LIB="qt$QT_VER.lib"

            QT_IS_STATIC="no"

            QT_IS_MT="no"

        elif test -f "$QTDIR/lib/qt-mt$QT_VER.lib" ; then

            QT_LIB="qt-mt$QT_VER.lib"

            QT_IS_STATIC="no"

            QT_IS_MT="yes"

        fi

        ;;

    *)

        QT_IS_STATIC=`ls $QTDIR/lib/*.a 2> /dev/null`

        if test "x$QT_IS_STATIC" = x; then

            QT_IS_STATIC="no"

        else

            QT_IS_STATIC="yes"

        fi

        if test x$QT_IS_STATIC = xno ; then

            QT_IS_DYNAMIC=`ls $QTDIR/lib/*.so 2> /dev/null` 

            QT_IS_DYNAMIC64=`ls $QTDIR/lib64/*.so 2> /dev/null` 

            if test "x$QT_IS_DYNAMIC" = x && test "x$QT_IS_DYNAMIC64" = x;  then

                AC_MSG_ERROR([*** Couldn't find any Qt libraries])

            fi

            if test "$QTFORCE32" = "no" && test "x$QT_IS_DYNAMIC64" != x;  then

            	QT_LIB_DIR="lib64"

            fi

        fi

        if test "x`ls $QTDIR/$QT_LIB_DIR/libqt.{a,so} 2> /dev/null`" != x ; then

            QT_LIB="-lqt"

            QT_IS_MT="no"

        elif test "x`ls $QTDIR/$QT_LIB_DIR/libqt-mt.{a,so} 2> /dev/null`" != x ; then

            QT_LIB="-lqt-mt"

            QT_IS_MT="yes"

        elif test "x`ls $QTDIR/$QT_LIB_DIR/libqte.{a,so} 2> /dev/null`" != x ; then

            QT_LIB="-lqte"

            QT_IS_MT="no"

            QT_IS_EMBEDDED="yes"

        elif test "x`ls $QTDIR/$QT_LIB_DIR/libqte-mt.{a,so} 2> /dev/null`" != x ; then

            QT_LIB="-lqte-mt"

            QT_IS_MT="yes"

            QT_IS_EMBEDDED="yes"

        fi

        ;;

esac

AC_MSG_CHECKING([if Qt is static])

AC_MSG_RESULT([$QT_IS_STATIC])

AC_MSG_CHECKING([if Qt is multithreaded])

AC_MSG_RESULT([$QT_IS_MT])

AC_MSG_CHECKING([if Qt is embedded])

AC_MSG_RESULT([$QT_IS_EMBEDDED])

QT_GUILINK=""

QASSISTANTCLIENT_LDADD="-lqassistantclient"

if test -z "$x_libraries"; then

  X_PATH=""

else

  X_PATH="-L$x_libraries"

fi

case "${host}" in

    *irix*)

        QT_LIBS="$QT_LIB"

        if test $QT_IS_STATIC = yes ; then

            QT_LIBS="$QT_LIBS $X_PATH -lXext -lX11 -lm -lSM -lICE"

        fi

        ;;

    *linux*)

        QT_LIBS="$QT_LIB"

        if test $QT_IS_STATIC = yes && test $QT_IS_EMBEDDED = no; then

            QT_LIBS="$QT_LIBS $X_PATH -lXext -lX11 -lm -lSM -lICE -ldl -ljpeg"

        fi

        ;;

    *osf*) 

        # Digital Unix (aka DGUX aka Tru64)

        QT_LIBS="$QT_LIB"

        if test $QT_IS_STATIC = yes ; then

            QT_LIBS="$QT_LIBS $X_PATH -lXext -lX11 -lm -lSM -lICE"

        fi

        ;;

    *solaris*)

        QT_LIBS="$QT_LIB"

        if test $QT_IS_STATIC = yes ; then

            QT_LIBS="$QT_LIBS $X_PATH -lXext -lX11 -lm -lSM -lICE -lresolv -lsocket -lnsl"

        fi

        ;;

    *win*)

        # linker flag to suppress console when linking a GUI app on Win32

        QT_GUILINK="/subsystem:windows"

	if test $QT_MAJOR = "3" ; then

	    if test $QT_IS_MT = yes ; then

        	QT_LIBS="/nodefaultlib:libcmt"

            else

            	QT_LIBS="/nodefaultlib:libc"

            fi

        fi

        if test $QT_IS_STATIC = yes ; then

            QT_LIBS="$QT_LIBS $QT_LIB kernel32.lib user32.lib gdi32.lib comdlg32.lib ole32.lib shell32.lib imm32.lib advapi32.lib wsock32.lib winspool.lib winmm.lib netapi32.lib"

            if test $QT_MAJOR = "3" ; then

                QT_LIBS="$QT_LIBS qtmain.lib"

            fi

        else

            QT_LIBS="$QT_LIBS $QT_LIB"        

            if test $QT_MAJOR = "3" ; then

                QT_CXXFLAGS="$QT_CXXFLAGS -DQT_DLL"

                QT_LIBS="$QT_LIBS qtmain.lib qui.lib user32.lib netapi32.lib"

            fi

        fi

        QASSISTANTCLIENT_LDADD="qassistantclient.lib"

        ;;

esac

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

        QT_CXXFLAGS="-DQWS $QT_CXXFLAGS"

fi

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

        QT_CXXFLAGS="$QT_CXXFLAGS -D_REENTRANT -DQT_THREAD_SUPPORT"

fi

QT_LDADD="-L$QTDIR/$QT_LIB_DIR $QT_LIBS"

if test x$QT_IS_STATIC = xyes ; then

    OLDLIBS="$LIBS"

    LIBS="$QT_LDADD"

    AC_CHECK_LIB(Xft, XftFontOpen, QT_LDADD="$QT_LDADD -lXft")

    LIBS="$LIBS"

fi

AC_MSG_CHECKING([QT_CXXFLAGS])

AC_MSG_RESULT([$QT_CXXFLAGS])

AC_MSG_CHECKING([QT_LDADD])

AC_MSG_RESULT([$QT_LDADD])

AC_SUBST(QT_CXXFLAGS)

AC_SUBST(QT_LDADD)

AC_SUBST(QT_GUILINK)

AC_SUBST(QASSISTANTCLIENT_LDADD)

])