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dnl From autoqt-0.03 by Geoffrey Wossum (gwossum@acm.org)
dnl http://autoqt.sourceforge.net/

# Copyright (c) 2002, Geoffrey Wossum
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without 
# modification, are permitted provided that the following conditions are 
# met:
# 
#  - Redistributions of source code must retain the above copyright notice, 
#    this list of conditions and the following disclaimer.
# 
#  - Redistributions in binary form must reproduce the above copyright 
#    notice, this list of conditions and the following disclaimer in the 
#    documentation and/or other materials provided with the distribution.
# 
#  - Neither the name of Geoffrey Wossum nor the names of its 
#    contributors may be used to endorse or promote products derived from 
#    this software without specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

dnl 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)

dnl Check that QTDIR is defined or that --with-qtdir given
if test x"$QTDIR" = x ; then
    QT_SEARCH="qt-3.3 qt31 qt3 qt2 qt"
    for i in $QT_SEARCH; do
	QT_SEARCH2="/usr/share/$i /usr/lib/$i /usr/local/$i"
	for j in $QT_SEARCH2; do
            if test -f $j/include/qglobal.h -a x$QTDIR = x; then
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                QTDIR=$j
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                break 2
            fi
        done
    done
fi
if test x"$QTDIR" = x ; then
    AC_MSG_ERROR([*** QTDIR must be defined, or --with-qtdir option given])
fi
AC_MSG_RESULT([$QTDIR])

dnl Change backslashes in QTDIR to forward slashes to prevent escaping
dnl problems later on in the build process, mainly for Cygwin build
dnl environment using MSVC as the compiler
dnl TODO: Use sed instead of perl
QTDIR=`echo $QTDIR | perl -p -e 's/\\\\/\\//g'`

dnl 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)])

dnl Check that moc is in path
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AC_PATH_PROG(MOC, moc, [], [$QTDIR/bin:$PATH])
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if test x$MOC = x ; then
        AC_MSG_ERROR([*** moc must be in path])
fi

dnl uic is the Qt user interface compiler
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AC_PATH_PROG(UIC, uic, [], [$QTDIR/bin:$PATH])
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if test x$UIC = x ; then
        AC_MSG_ERROR([*** uic must be in path])
fi

dnl qembed is the Qt data embedding utility.
dnl It is located in $QTDIR/tools/qembed, and must be compiled and installed
dnl manually, we'll let it slide if it isn't present
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AC_PATH_PROG(QEMBED, qembed, [], [$QTDIR/bin:$PATH])
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dnl Calculate Qt include path
QT_CXXFLAGS="-I$QTDIR/include"

QT_IS_EMBEDDED="no"
dnl 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 $QTDIR/lib/*.so 2> /dev/null` 
            if test "x$QT_IS_DYNAMIC" = x;  then
                AC_MSG_ERROR([*** Couldn't find any Qt libraries])
            fi
        fi

        if test "x`ls $QTDIR/lib/libqt.* 2> /dev/null`" != x ; then
            QT_LIB="-lqt"
            QT_IS_MT="no"
        elif test "x`ls $QTDIR/lib/libqt-mt.* 2> /dev/null`" != x ; then
            QT_LIB="-lqt-mt"
            QT_IS_MT="yes"
        elif test "x`ls $QTDIR/lib/libqte.* 2> /dev/null`" != x ; then
            QT_LIB="-lqte"
            QT_IS_MT="no"
            QT_IS_EMBEDDED="yes"
        elif test "x`ls $QTDIR/lib/libqte-mt.* 2> /dev/null`" != x ; then
            QT_LIB="-lqte-mt"
            QT_IS_MT="yes"
            QT_IS_EMBEDDED="yes"
        fi
        ;;
esac
AC_MSG_CHECKING([if Qt is static])
AC_MSG_RESULT([$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"
case "${host}" in
    *irix*)
        QT_LIBS="$QT_LIB"
        if test $QT_IS_STATIC = yes ; then
            QT_LIBS="$QT_LIBS -L$x_libraries -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 -L$x_libraries -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 -L$x_libraries -lXext -lX11 -lm -lSM -lICE"
        fi
        ;;

    *solaris*)
        QT_LIBS="$QT_LIB"
        if test $QT_IS_STATIC = yes ; then
            QT_LIBS="$QT_LIBS -L$x_libraries -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/lib $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")
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dnl    LIBS="$LIBS"
    LIBS=""
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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)
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AC_SUBST(QT_LIBS)
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])