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# (C) Copyright 2005-2007 EDF-EADS-Phimeca
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License.
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# This library is distributed in the hope that it will be useful
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# @author: $LastChangedBy: dutka $
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# @date: $LastChangedDate: 2008-05-21 11:21:38 +0200 (mer, 21 mai 2008) $
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# Id: $Id: bnv_have_qt.m4 815 2008-05-21 09:21:38Z dutka $
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dnl @synopsis BNV_HAVE_QT [--with-Qt-dir=DIR] [--with-Qt-lib-dir=DIR] [--with-Qt-lib=LIB]
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dnl @synopsis BNV_HAVE_QT [--with-Qt-include-dir=DIR] [--with-Qt-bin-dir=DIR] [--with-Qt-lib-dir=DIR] [--with-Qt-lib=LIB]
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dnl @summary Search for Trolltech's Qt GUI framework.
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dnl Searches common directories for Qt include files, libraries and Qt
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dnl binary utilities. The macro supports several different versions of
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dnl the Qt framework being installed on the same machine. Without
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dnl options, the macro is designed to look for the latest library,
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dnl i.e., the highest definition of QT_VERSION in qglobal.h. By use of
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dnl one or more options a different library may be selected. There are
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dnl two different sets of options. Both sets contain the option
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dnl --with-Qt-lib=LIB which can be used to force the use of a
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dnl particular version of the library file when more than one are
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dnl available. LIB must be in the form as it would appear behind the
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dnl "-l" option to the compiler. Examples for LIB would be "qt-mt" for
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dnl the multi-threaded version and "qt" for the regular version. In
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dnl addition to this, the first set consists of an option
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dnl --with-Qt-dir=DIR which can be used when the installation conforms
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dnl to Trolltech's standard installation, which means that header files
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dnl are in DIR/include, binary utilities are in DIR/bin and the library
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dnl is in DIR/lib. The second set of options can be used to indicate
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dnl individual locations for the header files, the binary utilities and
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dnl the library file, in addition to the specific version of the
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dnl The following shell variable is set to either "yes" or "no":
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dnl Additionally, the following variables are exported:
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dnl which respectively contain an "-I" flag pointing to the Qt include
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dnl directory (and "-DQT_THREAD_SUPPORT" when LIB is "qt-mt"), link
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dnl flags necessary to link with Qt and X, the name of the meta object
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dnl compiler and the user interface compiler both with full path, and
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dnl finaly the variable QTDIR as Trolltech likes to see it defined (if
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dnl Example lines for Makefile.in:
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dnl CXXFLAGS = @QT_CXXFLAGS@
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dnl After the variables have been set, a trial compile and link is
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dnl performed to check the correct functioning of the meta object
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dnl compiler. This test may fail when the different detected elements
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dnl stem from different releases of the Qt framework. In that case, an
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dnl error message is emitted and configure stops.
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dnl No common variables such as $LIBS or $CFLAGS are polluted.
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dnl --with-Qt-dir=DIR: DIR is equal to $QTDIR if you have followed the
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dnl installation instructions of Trolltech. Header files are in
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dnl DIR/include, binary utilities are in DIR/bin and the library is in
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dnl --with-Qt-include-dir=DIR: Qt header files are in DIR.
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dnl --with-Qt-bin-dir=DIR: Qt utilities such as moc and uic are in DIR.
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dnl --with-Qt-lib-dir=DIR: The Qt library is in DIR.
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dnl --with-Qt-lib=LIB: Use -lLIB to link with the Qt library.
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dnl If some option "=no" or, equivalently, a --without-Qt-* version is
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dnl given in stead of a --with-Qt-*, "have_qt" is set to "no" and the
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dnl other variables are set to the empty string.
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dnl @category InstalledPackages
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dnl @author Bastiaan Veelo <Bastiaan@Veelo.net>
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dnl @version 2006-03-12
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dnl @license AllPermissive
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dnl Copyright (C) 2001, 2002, 2003, 2005, 2006 Bastiaan Veelo
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dnl THANKS! This code includes bug fixes and contributions made by:
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dnl Dennis R. Weilert,
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dnl 2006-03-12 * Hide output of ls and fix an m4 quoting problem (due to Scott J. Bertin).
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dnl 2006-02-13 * Check compiler return value instead of parsing the error stream,
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dnl which detected warnings as false negatives (due to Jens Hannemann).
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dnl 2006-02-02 * Spelling of "Success".
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dnl * Fixed unsave test for $bnv_qt_lib without quotes.
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dnl * Put dnl in front of all comments.
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dnl * Changed -l$bnv_qt_lib_dir into -L$bnv_qt_lib_dir (all due to Pavel Roskin).
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dnl 2006-01-19 * Support for 64bit architectures.
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dnl * Updated documentation.
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dnl 2006-01-18: * Fix "cat: bnv_qt_test.c: No such file or directory" (due to Jens Hannemann).
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dnl * Hide output of failing ls.
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dnl 2006-01-11: * Check in /Developer on Mac OS X; Check in $QTDIR (due to Brian Mingus).
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dnl Calls BNV_PATH_QT_DIRECT (contained in this file) as a subroutine.
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AC_DEFUN([BNV_HAVE_QT],
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AC_REQUIRE([AC_PROG_CXX])
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AC_REQUIRE([AC_PATH_X])
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AC_REQUIRE([AC_PATH_XTRA])
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AC_MSG_CHECKING(for Qt)
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AC_ARG_WITH([Qt-dir],
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[ --with-Qt-dir=DIR DIR is equal to $QTDIR if you have followed the
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installation instructions of Trolltech. Header
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files are in DIR/include, binary utilities are
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in DIR/bin. The library is in DIR/lib, unless
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--with-Qt-lib-dir is also set.])
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AC_ARG_WITH([Qt-include-dir],
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[ --with-Qt-include-dir=DIR
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Qt header files are in DIR])
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AC_ARG_WITH([Qt-bin-dir],
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[ --with-Qt-bin-dir=DIR Qt utilities such as moc and uic are in DIR])
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AC_ARG_WITH([Qt-lib-dir],
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[ --with-Qt-lib-dir=DIR The Qt library is in DIR])
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AC_ARG_WITH([Qt-lib],
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[ --with-Qt-lib=LIB Use -lLIB to link with the Qt library])
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if test x"$with_Qt_dir" = x"no" ||
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test x"$with_Qt_include-dir" = x"no" ||
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test x"$with_Qt_bin_dir" = x"no" ||
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test x"$with_Qt_lib_dir" = x"no" ||
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test x"$with_Qt_lib" = x"no"; then
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# user disabled Qt. Leave cache alone.
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have_qt="User disabled Qt."
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# "yes" is a bogus option
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if test x"$with_Qt_dir" = xyes; then
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if test x"$with_Qt_include_dir" = xyes; then
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if test x"$with_Qt_bin_dir" = xyes; then
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if test x"$with_Qt_lib_dir" = xyes; then
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if test x"$with_Qt_lib" = xyes; then
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# No Qt unless we discover otherwise
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# Check whether we are requested to link with a specific version
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if test x"$with_Qt_lib" != x; then
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bnv_qt_lib="$with_Qt_lib"
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# Check whether we were supplied with an answer already
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if test x"$with_Qt_dir" != x; then
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bnv_qt_dir="$with_Qt_dir"
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bnv_qt_include_dir="$with_Qt_dir/include"
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bnv_qt_bin_dir="$with_Qt_dir/bin"
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bnv_qt_lib_dir="$with_Qt_dir/lib"
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# Only search for the lib if the user did not define one already
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if test x"$bnv_qt_lib" = x; then
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bnv_qt_lib="`ls $bnv_qt_lib_dir/libqt* | sed -n 1p |
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sed s@$bnv_qt_lib_dir/lib@@ | [sed s@[.].*@@]`"
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bnv_qt_LIBS="-L$bnv_qt_lib_dir -l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
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# Use cached value or do search, starting with suggestions from
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AC_CACHE_VAL(bnv_cv_have_qt,
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# We are not given a solution and there is no cached value.
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bnv_qt_include_dir=NO
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if test x"$bnv_qt_lib" = x; then
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if test "$bnv_qt_dir" = NO ||
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test "$bnv_qt_include_dir" = NO ||
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test "$bnv_qt_lib_dir" = NO ||
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test "$bnv_qt_lib" = NO; then
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# Problem with finding complete Qt. Cache the known absence of Qt.
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bnv_cv_have_qt="have_qt=no"
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# Record where we found Qt for the cache.
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bnv_cv_have_qt="have_qt=yes \
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bnv_qt_dir=$bnv_qt_dir \
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bnv_qt_include_dir=$bnv_qt_include_dir \
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bnv_qt_bin_dir=$bnv_qt_bin_dir \
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bnv_qt_LIBS=\"$bnv_qt_LIBS\""
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eval "$bnv_cv_have_qt"
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fi # all $bnv_qt_* are set
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fi # $have_qt reflects the system status
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if test x"$have_qt" = xyes; then
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QT_CXXFLAGS="-I$bnv_qt_include_dir"
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if test x"$bnv_qt_lib" = xqt-mt; then
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QT_CXXFLAGS="$QT_CXXFLAGS -DQT_THREAD_SUPPORT"
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QT_LIBS="$bnv_qt_LIBS"
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# If bnv_qt_dir is defined, utilities are expected to be in the
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if test x"$bnv_qt_dir" != x; then
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if test -x "$bnv_qt_dir/bin/uic"; then
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QT_UIC="$bnv_qt_dir/bin/uic"
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# Old versions of Qt don't have uic
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QT_MOC="$bnv_qt_dir/bin/moc"
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# Or maybe we are told where to look for the utilities
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if test x"$bnv_qt_bin_dir" != x; then
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if test -x "$bnv_qt_bin_dir/uic"; then
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QT_UIC="$bnv_qt_bin_dir/uic"
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# Old versions of Qt don't have uic
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QT_MOC="$bnv_qt_bin_dir/moc"
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# Last possibility is that they are in $PATH
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# All variables are defined, report the result
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AC_MSG_RESULT([$have_qt:
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QT_CXXFLAGS=$QT_CXXFLAGS
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AC_MSG_RESULT($have_qt)
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AC_SUBST(QT_CXXFLAGS)
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if test x"$have_qt" = xyes; then
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AC_MSG_CHECKING(correct functioning of Qt installation)
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AC_CACHE_VAL(bnv_cv_qt_test_result,
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cat > bnv_qt_test.h << EOF
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class Test : public QObject
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cat > bnv_qt_main.$ac_ext << EOF
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#include "bnv_qt_test.h"
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#include <qapplication.h>
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int main( int argc, char **argv )
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QApplication app( argc, argv );
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QObject::connect( &t, SIGNAL(send()), &t, SLOT(receive()) );
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bnv_cv_qt_test_result="failure"
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bnv_try_1="$QT_MOC bnv_qt_test.h -o moc_bnv_qt_test.$ac_ext >/dev/null 2>/dev/null"
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AC_TRY_EVAL(bnv_try_1)
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if test x"$ac_status" != x0; then
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echo "$bnv_err_1" >&AC_FD_CC
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echo "configure: could not run $QT_MOC on:" >&AC_FD_CC
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cat bnv_qt_test.h >&AC_FD_CC
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bnv_try_2="$CXX $QT_CXXFLAGS -c $CXXFLAGS -o moc_bnv_qt_test.o moc_bnv_qt_test.$ac_ext >/dev/null 2>/dev/null"
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AC_TRY_EVAL(bnv_try_2)
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if test x"$ac_status" != x0; then
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echo "$bnv_err_2" >&AC_FD_CC
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echo "configure: could not compile:" >&AC_FD_CC
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cat moc_bnv_qt_test.$ac_ext >&AC_FD_CC
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bnv_try_3="$CXX $QT_CXXFLAGS -c $CXXFLAGS -o bnv_qt_main.o bnv_qt_main.$ac_ext >/dev/null 2>/dev/null"
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AC_TRY_EVAL(bnv_try_3)
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if test x"$ac_status" != x0; then
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echo "$bnv_err_3" >&AC_FD_CC
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echo "configure: could not compile:" >&AC_FD_CC
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cat bnv_qt_main.$ac_ext >&AC_FD_CC
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bnv_try_4="$CXX $QT_LIBS $LIBS -o bnv_qt_main bnv_qt_main.o moc_bnv_qt_test.o $QT_LIBS>/dev/null 2>/dev/null"
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AC_TRY_EVAL(bnv_try_4)
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if test x"$ac_status" != x0; then
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echo "$bnv_err_4" >&AC_FD_CC
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bnv_cv_qt_test_result="success"
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])dnl AC_CACHE_VAL bnv_cv_qt_test_result
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AC_MSG_RESULT([$bnv_cv_qt_test_result]);
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if test x"$bnv_cv_qt_test_result" = "xfailure"; then
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AC_MSG_ERROR([Failed to find matching components of a complete
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Qt installation. Try using more options,
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see ./configure --help.])
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rm -f bnv_qt_test.h moc_bnv_qt_test.$ac_ext moc_bnv_qt_test.o \
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bnv_qt_main.$ac_ext bnv_qt_main.o bnv_qt_main
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dnl Internal subroutine of BNV_HAVE_QT
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dnl Set bnv_qt_dir bnv_qt_include_dir bnv_qt_bin_dir bnv_qt_lib_dir bnv_qt_lib
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AC_DEFUN([BNV_PATH_QT_DIRECT],
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## Binary utilities ##
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if test x"$with_Qt_bin_dir" != x; then
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bnv_qt_bin_dir=$with_Qt_bin_dir
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## Look for header files ##
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if test x"$with_Qt_include_dir" != x; then
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bnv_qt_include_dir="$with_Qt_include_dir"
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# The following header file is expected to define QT_VERSION.
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qt_direct_test_header=qglobal.h
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# Look for the header file in a standard set of common directories.
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bnv_include_path_list="
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`ls -dr ${QTDIR}/include 2>/dev/null`
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`ls -dr /usr/include/qt* 2>/dev/null`
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`ls -dr /usr/lib/qt*/include 2>/dev/null`
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`ls -dr /usr/local/qt*/include 2>/dev/null`
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`ls -dr /opt/qt*/include 2>/dev/null`
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`ls -dr /Developer/qt*/include 2>/dev/null`
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for bnv_dir in $bnv_include_path_list; do
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if test -r "$bnv_dir/$qt_direct_test_header"; then
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bnv_dirs="$bnv_dirs $bnv_dir"
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# Now look for the newest in this list
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for bnv_dir in $bnv_dirs; do
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bnv_this_ver=`egrep -w '#define QT_VERSION' $bnv_dir/$qt_direct_test_header | sed s/'#define QT_VERSION'//`
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if expr $bnv_this_ver '>' $bnv_prev_ver > /dev/null; then
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bnv_qt_include_dir=$bnv_dir
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bnv_prev_ver=$bnv_this_ver
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fi dnl Found header files.
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# Are these headers located in a traditional Trolltech installation?
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# That would be $bnv_qt_include_dir stripped from its last element:
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bnv_possible_qt_dir=`dirname $bnv_qt_include_dir`
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if (test -x $bnv_possible_qt_dir/bin/moc) &&
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((ls $bnv_possible_qt_dir/lib/libqt* > /dev/null 2>/dev/null) ||
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(ls $bnv_possible_qt_dir/lib64/libqt* > /dev/null 2>/dev/null)); then
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# Then the rest is a piece of cake
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bnv_qt_dir=$bnv_possible_qt_dir
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bnv_qt_bin_dir="$bnv_qt_dir/bin"
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if test x"$with_Qt_lib_dir" != x; then
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bnv_qt_lib_dir="$with_Qt_lib_dir"
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if (test -d $bnv_qt_dir/lib64); then
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bnv_qt_lib_dir="$bnv_qt_dir/lib64"
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bnv_qt_lib_dir="$bnv_qt_dir/lib"
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# Only look for lib if the user did not supply it already
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if test x"$bnv_qt_lib" = xNO; then
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bnv_qt_lib="`ls $bnv_qt_lib_dir/libqt* | sed -n 1p |
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sed s@$bnv_qt_lib_dir/lib@@ | [sed s@[.].*@@]`"
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bnv_qt_LIBS="-L$bnv_qt_lib_dir -l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
426
# There is no valid definition for $QTDIR as Trolltech likes to see it
428
## Look for Qt library ##
429
if test x"$with_Qt_lib_dir" != x; then
430
bnv_qt_lib_dir="$with_Qt_lib_dir"
431
# Only look for lib if the user did not supply it already
432
if test x"$bnv_qt_lib" = xNO; then
433
bnv_qt_lib="`ls $bnv_qt_lib_dir/libqt* | sed -n 1p |
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sed s@$bnv_qt_lib_dir/lib@@ | [sed s@[.].*@@]`"
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bnv_qt_LIBS="-L$bnv_qt_lib_dir -l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
438
# Normally, when there is no traditional Trolltech installation,
439
# the library is installed in a place where the linker finds it
441
# If the user did not define the library name, try with qt
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if test x"$bnv_qt_lib" = xNO; then
445
qt_direct_test_header=qapplication.h
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qt_direct_test_main="
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QApplication app(argc,argv);
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# See if we find the library without any special options.
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# Don't add top $LIBS permanently yet
453
bnv_save_LIBS="$LIBS"
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LIBS="-l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
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bnv_save_CXXFLAGS="$CXXFLAGS"
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CXXFLAGS="-I$bnv_qt_include_dir"
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AC_TRY_LINK([#include <$qt_direct_test_header>],
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$qt_direct_test_main,
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# We can link with no special library directory.
465
# That did not work. Try the multi-threaded version
466
echo "Non-critical error, please neglect the above." >&AC_FD_CC
468
LIBS="-l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
469
AC_TRY_LINK([#include <$qt_direct_test_header>],
470
$qt_direct_test_main,
473
# We can link with no special library directory.
476
# That did not work. Try the OpenGL version
477
echo "Non-critical error, please neglect the above." >&AC_FD_CC
479
LIBS="-l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
480
AC_TRY_LINK([#include <$qt_direct_test_header>],
481
$qt_direct_test_main,
484
# We can link with no special library directory.
487
# That did not work. Maybe a library version I don't know about?
488
echo "Non-critical error, please neglect the above." >&AC_FD_CC
489
# Look for some Qt lib in a standard set of common directories.
491
`echo $bnv_qt_includes | sed ss/includess`
499
`ls -dr /usr/lib64/qt* 2>/dev/null`
500
`ls -dr /usr/lib64/qt*/lib64 2>/dev/null`
501
`ls -dr /usr/lib/qt* 2>/dev/null`
502
`ls -dr /usr/local/qt* 2>/dev/null`
503
`ls -dr /opt/qt* 2>/dev/null`
505
for bnv_dir in $bnv_dir_list; do
506
if ls $bnv_dir/libqt* >/dev/null 2>/dev/null; then
507
# Gamble that it's the first one...
508
bnv_qt_lib="`ls $bnv_dir/libqt* | sed -n 1p |
509
sed s@$bnv_dir/lib@@ | sed s/[[.]].*//`"
510
bnv_qt_lib_dir="$bnv_dir"
515
LIBS="-l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
516
AC_TRY_LINK([#include <$qt_direct_test_header>],
517
$qt_direct_test_main,
520
# We can link with no special library directory.
523
# Leave bnv_qt_lib_dir defined
528
if test x"$bnv_qt_lib_dir" != x; then
529
bnv_qt_LIBS="-L$bnv_qt_lib_dir $LIBS"
533
LIBS="$bnv_save_LIBS"
534
CXXFLAGS="$bnv_save_CXXFLAGS"
535
fi dnl $with_Qt_lib_dir was not given
536
fi dnl Done setting up for non-traditional Trolltech installation
added
removed
lib/m4/bnv_have_qt.m4
