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BNV_HAVE_QT [--with-Qt-dir=DIR] [--with-Qt-lib-dir=DIR]
[--with-Qt-lib=LIB]
BNV_HAVE_QT [--with-Qt-include-dir=DIR] [--with-Qt-bin-dir=DIR]
[--with-Qt-lib-dir=DIR] [--with-Qt-lib=LIB]
Searches common directories for Qt include files, libraries and Qt binary utilities. The macro supports several different versions of the Qt framework being installed on the same machine. Without options, the macro is designed to look for the latest library, i.e., the highest definition of QT_VERSION in qglobal.h. By use of one or more options a different library may be selected. There are two different sets of options. Both sets contain the option --with-Qt-lib=LIB which can be used to force the use of a particular version of the library file when more than one are available. LIB must be in the form as it would appear behind the "-l" option to the compiler. Examples for LIB would be "qt-mt" for the multi-threaded version and "qt" for the regular version. In addition to this, the first set consists of an option --with-Qt-dir=DIR which can be used when the installation conforms to Trolltech's standard installation, which means that header files are in DIR/include, binary utilities are in DIR/bin and the library is in DIR/lib. The second set of options can be used to indicate individual locations for the header files, the binary utilities and the library file, in addition to the specific version of the library file.
The following shell variable is set to either "yes" or "no":
have_qt
Additionally, the following variables are exported:
QT_CXXFLAGS QT_LIBS QT_MOC QT_UIC QT_DIR
which respectively contain an "-I" flag pointing to the Qt include directory (and "-DQT_THREAD_SUPPORT" when LIB is "qt-mt"), link flags necessary to link with Qt and X, the name of the meta object compiler and the user interface compiler both with full path, and finaly the variable QTDIR as Trolltech likes to see it defined (if possible).
Example lines for Makefile.in:
CXXFLAGS = @QT_CXXFLAGS@ MOC = @QT_MOC@
After the variables have been set, a trial compile and link is performed to check the correct functioning of the meta object compiler. This test may fail when the different detected elements stem from different releases of the Qt framework. In that case, an error message is emitted and configure stops.
No common variables such as $LIBS or $CFLAGS are polluted.
Options:
--with-Qt-dir=DIR: DIR is equal to $QTDIR if you have followed the installation instructions of Trolltech. Header files are in DIR/include, binary utilities are in DIR/bin and the library is in DIR/lib.
--with-Qt-include-dir=DIR: Qt header files are in DIR.
--with-Qt-bin-dir=DIR: Qt utilities such as moc and uic are in DIR.
--with-Qt-lib-dir=DIR: The Qt library is in DIR.
--with-Qt-lib=LIB: Use -lLIB to link with the Qt library.
If some option "=no" or, equivalently, a --without-Qt-* version is given in stead of a --with-Qt-*, "have_qt" is set to "no" and the other variables are set to the empty string.
Bastiaan Veelo <Bastiaan@Veelo.net>
2006-03-12
dnl Copyright (C) 2001, 2002, 2003, 2005, 2006 Bastiaan Veelo
dnl THANKS! This code includes bug fixes and contributions made by:
dnl Tim McClarren,
dnl Dennis R. Weilert,
dnl Qingning Huo,
dnl Brian Mingus,
dnl Jens Hannemann,
dnl Pavel Roskin,
dnl Scott J. Bertin.
dnl ChangeLog
dnl 2006-03-12 * Hide output of ls and fix an m4 quoting problem (due to Scott J. Bertin).
dnl 2006-02-13 * Check compiler return value instead of parsing the error stream,
dnl which detected warnings as false negatives (due to Jens Hannemann).
dnl 2006-02-02 * Spelling of "Success".
dnl * Fixed unsave test for $bnv_qt_lib without quotes.
dnl * Put dnl in front of all comments.
dnl * Changed -l$bnv_qt_lib_dir into -L$bnv_qt_lib_dir (all due to Pavel Roskin).
dnl 2006-01-19 * Support for 64bit architectures.
dnl * Updated documentation.
dnl 2006-01-18: * Fix "cat: bnv_qt_test.c: No such file or directory" (due to Jens Hannemann).
dnl * Hide output of failing ls.
dnl 2006-01-11: * Check in /Developer on Mac OS X; Check in $QTDIR (due to Brian Mingus).
dnl Calls BNV_PATH_QT_DIRECT (contained in this file) as a subroutine.
AC_DEFUN([BNV_HAVE_QT],
[
AC_REQUIRE([AC_PROG_CXX])
AC_REQUIRE([AC_PATH_X])
AC_REQUIRE([AC_PATH_XTRA])
AC_MSG_CHECKING(for Qt)
AC_ARG_WITH([Qt-dir],
[ --with-Qt-dir=DIR DIR is equal to $QTDIR if you have followed the
installation instructions of Trolltech. Header
files are in DIR/include, binary utilities are
in DIR/bin. The library is in DIR/lib, unless
--with-Qt-lib-dir is also set.])
AC_ARG_WITH([Qt-include-dir],
[ --with-Qt-include-dir=DIR
Qt header files are in DIR])
AC_ARG_WITH([Qt-bin-dir],
[ --with-Qt-bin-dir=DIR Qt utilities such as moc and uic are in DIR])
AC_ARG_WITH([Qt-lib-dir],
[ --with-Qt-lib-dir=DIR The Qt library is in DIR])
AC_ARG_WITH([Qt-lib],
[ --with-Qt-lib=LIB Use -lLIB to link with the Qt library])
if test x"$with_Qt_dir" = x"no" ||
test x"$with_Qt_include-dir" = x"no" ||
test x"$with_Qt_bin_dir" = x"no" ||
test x"$with_Qt_lib_dir" = x"no" ||
test x"$with_Qt_lib" = x"no"; then
# user disabled Qt. Leave cache alone.
have_qt="User disabled Qt."
else
# "yes" is a bogus option
if test x"$with_Qt_dir" = xyes; then
with_Qt_dir=
fi
if test x"$with_Qt_include_dir" = xyes; then
with_Qt_include_dir=
fi
if test x"$with_Qt_bin_dir" = xyes; then
with_Qt_bin_dir=
fi
if test x"$with_Qt_lib_dir" = xyes; then
with_Qt_lib_dir=
fi
if test x"$with_Qt_lib" = xyes; then
with_Qt_lib=
fi
# No Qt unless we discover otherwise
have_qt=no
# Check whether we are requested to link with a specific version
if test x"$with_Qt_lib" != x; then
bnv_qt_lib="$with_Qt_lib"
fi
# Check whether we were supplied with an answer already
if test x"$with_Qt_dir" != x; then
have_qt=yes
bnv_qt_dir="$with_Qt_dir"
bnv_qt_include_dir="$with_Qt_dir/include"
bnv_qt_bin_dir="$with_Qt_dir/bin"
bnv_qt_lib_dir="$with_Qt_dir/lib"
# Only search for the lib if the user did not define one already
if test x"$bnv_qt_lib" = x; then
bnv_qt_lib="`ls $bnv_qt_lib_dir/libqt* | sed -n 1p |
sed s@$bnv_qt_lib_dir/lib@@ | [sed s@[.].*@@]`"
fi
bnv_qt_LIBS="-L$bnv_qt_lib_dir -l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
else
# Use cached value or do search, starting with suggestions from
# the command line
AC_CACHE_VAL(bnv_cv_have_qt,
[
# We are not given a solution and there is no cached value.
bnv_qt_dir=NO
bnv_qt_include_dir=NO
bnv_qt_lib_dir=NO
if test x"$bnv_qt_lib" = x; then
bnv_qt_lib=NO
fi
BNV_PATH_QT_DIRECT
if test "$bnv_qt_dir" = NO ||
test "$bnv_qt_include_dir" = NO ||
test "$bnv_qt_lib_dir" = NO ||
test "$bnv_qt_lib" = NO; then
# Problem with finding complete Qt. Cache the known absence of Qt.
bnv_cv_have_qt="have_qt=no"
else
# Record where we found Qt for the cache.
bnv_cv_have_qt="have_qt=yes \
bnv_qt_dir=$bnv_qt_dir \
bnv_qt_include_dir=$bnv_qt_include_dir \
bnv_qt_bin_dir=$bnv_qt_bin_dir \
bnv_qt_LIBS=\"$bnv_qt_LIBS\""
fi
])dnl
eval "$bnv_cv_have_qt"
fi # all $bnv_qt_* are set
fi # $have_qt reflects the system status
if test x"$have_qt" = xyes; then
QT_CXXFLAGS="-I$bnv_qt_include_dir"
if test x"$bnv_qt_lib" = xqt-mt; then
QT_CXXFLAGS="$QT_CXXFLAGS -DQT_THREAD_SUPPORT"
fi
QT_DIR="$bnv_qt_dir"
QT_LIBS="$bnv_qt_LIBS"
# If bnv_qt_dir is defined, utilities are expected to be in the
# bin subdirectory
if test x"$bnv_qt_dir" != x; then
if test -x "$bnv_qt_dir/bin/uic"; then
QT_UIC="$bnv_qt_dir/bin/uic"
else
# Old versions of Qt don't have uic
QT_UIC=
fi
QT_MOC="$bnv_qt_dir/bin/moc"
else
# Or maybe we are told where to look for the utilities
if test x"$bnv_qt_bin_dir" != x; then
if test -x "$bnv_qt_bin_dir/uic"; then
QT_UIC="$bnv_qt_bin_dir/uic"
else
# Old versions of Qt don't have uic
QT_UIC=
fi
QT_MOC="$bnv_qt_bin_dir/moc"
else
# Last possibility is that they are in $PATH
QT_UIC="`which uic`"
QT_MOC="`which moc`"
fi
fi
# All variables are defined, report the result
AC_MSG_RESULT([$have_qt:
QT_CXXFLAGS=$QT_CXXFLAGS
QT_DIR=$QT_DIR
QT_LIBS=$QT_LIBS
QT_UIC=$QT_UIC
QT_MOC=$QT_MOC])
else
# Qt was not found
QT_CXXFLAGS=
QT_DIR=
QT_LIBS=
QT_UIC=
QT_MOC=
AC_MSG_RESULT($have_qt)
fi
AC_SUBST(QT_CXXFLAGS)
AC_SUBST(QT_DIR)
AC_SUBST(QT_LIBS)
AC_SUBST(QT_UIC)
AC_SUBST(QT_MOC)
#### Being paranoid:
if test x"$have_qt" = xyes; then
AC_MSG_CHECKING(correct functioning of Qt installation)
AC_CACHE_VAL(bnv_cv_qt_test_result,
[
cat > bnv_qt_test.h << EOF
#include <qobject.h>
class Test : public QObject
{
Q_OBJECT
public:
Test() {}
~Test() {}
public slots:
void receive() {}
signals:
void send();
};
EOF
cat > bnv_qt_main.$ac_ext << EOF
#include "bnv_qt_test.h"
#include <qapplication.h>
int main( int argc, char **argv )
{
QApplication app( argc, argv );
Test t;
QObject::connect( &t, SIGNAL(send()), &t, SLOT(receive()) );
}
EOF
bnv_cv_qt_test_result="failure"
bnv_try_1="$QT_MOC bnv_qt_test.h -o moc_bnv_qt_test.$ac_ext >/dev/null 2>/dev/null"
AC_TRY_EVAL(bnv_try_1)
if test x"$ac_status" != x0; then
echo "$bnv_err_1" >&AC_FD_CC
echo "configure: could not run $QT_MOC on:" >&AC_FD_CC
cat bnv_qt_test.h >&AC_FD_CC
else
bnv_try_2="$CXX $QT_CXXFLAGS -c $CXXFLAGS -o moc_bnv_qt_test.o moc_bnv_qt_test.$ac_ext >/dev/null 2>/dev/null"
AC_TRY_EVAL(bnv_try_2)
if test x"$ac_status" != x0; then
echo "$bnv_err_2" >&AC_FD_CC
echo "configure: could not compile:" >&AC_FD_CC
cat moc_bnv_qt_test.$ac_ext >&AC_FD_CC
else
bnv_try_3="$CXX $QT_CXXFLAGS -c $CXXFLAGS -o bnv_qt_main.o bnv_qt_main.$ac_ext >/dev/null 2>/dev/null"
AC_TRY_EVAL(bnv_try_3)
if test x"$ac_status" != x0; then
echo "$bnv_err_3" >&AC_FD_CC
echo "configure: could not compile:" >&AC_FD_CC
cat bnv_qt_main.$ac_ext >&AC_FD_CC
else
bnv_try_4="$CXX $QT_LIBS $LIBS -o bnv_qt_main bnv_qt_main.o moc_bnv_qt_test.o >/dev/null 2>/dev/null"
AC_TRY_EVAL(bnv_try_4)
if test x"$ac_status" != x0; then
echo "$bnv_err_4" >&AC_FD_CC
else
bnv_cv_qt_test_result="success"
fi
fi
fi
fi
])dnl AC_CACHE_VAL bnv_cv_qt_test_result
AC_MSG_RESULT([$bnv_cv_qt_test_result]);
if test x"$bnv_cv_qt_test_result" = "xfailure"; then
AC_MSG_ERROR([Failed to find matching components of a complete
Qt installation. Try using more options,
see ./configure --help.])
fi
rm -f bnv_qt_test.h moc_bnv_qt_test.$ac_ext moc_bnv_qt_test.o \
bnv_qt_main.$ac_ext bnv_qt_main.o bnv_qt_main
fi
])
dnl Internal subroutine of BNV_HAVE_QT
dnl Set bnv_qt_dir bnv_qt_include_dir bnv_qt_bin_dir bnv_qt_lib_dir bnv_qt_lib
AC_DEFUN([BNV_PATH_QT_DIRECT],
[
## Binary utilities ##
if test x"$with_Qt_bin_dir" != x; then
bnv_qt_bin_dir=$with_Qt_bin_dir
fi
## Look for header files ##
if test x"$with_Qt_include_dir" != x; then
bnv_qt_include_dir="$with_Qt_include_dir"
else
# The following header file is expected to define QT_VERSION.
qt_direct_test_header=qglobal.h
# Look for the header file in a standard set of common directories.
bnv_include_path_list="
/usr/include
`ls -dr ${QTDIR}/include 2>/dev/null`
`ls -dr /usr/include/qt* 2>/dev/null`
`ls -dr /usr/lib/qt*/include 2>/dev/null`
`ls -dr /usr/local/qt*/include 2>/dev/null`
`ls -dr /opt/qt*/include 2>/dev/null`
`ls -dr /Developer/qt*/include 2>/dev/null`
"
for bnv_dir in $bnv_include_path_list; do
if test -r "$bnv_dir/$qt_direct_test_header"; then
bnv_dirs="$bnv_dirs $bnv_dir"
fi
done
# Now look for the newest in this list
bnv_prev_ver=0
for bnv_dir in $bnv_dirs; do
bnv_this_ver=`egrep -w '#define QT_VERSION' $bnv_dir/$qt_direct_test_header | sed s/'#define QT_VERSION'//`
if expr $bnv_this_ver '>' $bnv_prev_ver > /dev/null; then
bnv_qt_include_dir=$bnv_dir
bnv_prev_ver=$bnv_this_ver
fi
done
fi dnl Found header files.
# Are these headers located in a traditional Trolltech installation?
# That would be $bnv_qt_include_dir stripped from its last element:
bnv_possible_qt_dir=`dirname $bnv_qt_include_dir`
if (test -x $bnv_possible_qt_dir/bin/moc) &&
((ls $bnv_possible_qt_dir/lib/libqt* > /dev/null 2>/dev/null) ||
(ls $bnv_possible_qt_dir/lib64/libqt* > /dev/null 2>/dev/null)); then
# Then the rest is a piece of cake
bnv_qt_dir=$bnv_possible_qt_dir
bnv_qt_bin_dir="$bnv_qt_dir/bin"
if test x"$with_Qt_lib_dir" != x; then
bnv_qt_lib_dir="$with_Qt_lib_dir"
else
if (test -d $bnv_qt_dir/lib64); then
bnv_qt_lib_dir="$bnv_qt_dir/lib64"
else
bnv_qt_lib_dir="$bnv_qt_dir/lib"
fi
fi
# Only look for lib if the user did not supply it already
if test x"$bnv_qt_lib" = xNO; then
bnv_qt_lib="`ls $bnv_qt_lib_dir/libqt* | sed -n 1p |
sed s@$bnv_qt_lib_dir/lib@@ | [sed s@[.].*@@]`"
fi
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"
else
# There is no valid definition for $QTDIR as Trolltech likes to see it
bnv_qt_dir=
## Look for Qt library ##
if test x"$with_Qt_lib_dir" != x; then
bnv_qt_lib_dir="$with_Qt_lib_dir"
# Only look for lib if the user did not supply it already
if test x"$bnv_qt_lib" = xNO; then
bnv_qt_lib="`ls $bnv_qt_lib_dir/libqt* | sed -n 1p |
sed s@$bnv_qt_lib_dir/lib@@ | [sed s@[.].*@@]`"
fi
bnv_qt_LIBS="-L$bnv_qt_lib_dir -l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
else
# Normally, when there is no traditional Trolltech installation,
# the library is installed in a place where the linker finds it
# automatically.
# If the user did not define the library name, try with qt
if test x"$bnv_qt_lib" = xNO; then
bnv_qt_lib=qt
fi
qt_direct_test_header=qapplication.h
qt_direct_test_main="
int argc;
char ** argv;
QApplication app(argc,argv);
"
# See if we find the library without any special options.
# Don't add top $LIBS permanently yet
bnv_save_LIBS="$LIBS"
LIBS="-l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
bnv_qt_LIBS="$LIBS"
bnv_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="-I$bnv_qt_include_dir"
AC_TRY_LINK([#include <$qt_direct_test_header>],
$qt_direct_test_main,
[
# Success.
# We can link with no special library directory.
bnv_qt_lib_dir=
], [
# That did not work. Try the multi-threaded version
echo "Non-critical error, please neglect the above." >&AC_FD_CC
bnv_qt_lib=qt-mt
LIBS="-l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
AC_TRY_LINK([#include <$qt_direct_test_header>],
$qt_direct_test_main,
[
# Success.
# We can link with no special library directory.
bnv_qt_lib_dir=
], [
# That did not work. Try the OpenGL version
echo "Non-critical error, please neglect the above." >&AC_FD_CC
bnv_qt_lib=qt-gl
LIBS="-l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
AC_TRY_LINK([#include <$qt_direct_test_header>],
$qt_direct_test_main,
[
# Success.
# We can link with no special library directory.
bnv_qt_lib_dir=
], [
# That did not work. Maybe a library version I don't know about?
echo "Non-critical error, please neglect the above." >&AC_FD_CC
# Look for some Qt lib in a standard set of common directories.
bnv_dir_list="
`echo $bnv_qt_includes | sed ss/includess`
/lib
/usr/lib64
/usr/lib
/usr/local/lib64
/usr/local/lib
/opt/lib64
/opt/lib
`ls -dr /usr/lib64/qt* 2>/dev/null`
`ls -dr /usr/lib64/qt*/lib64 2>/dev/null`
`ls -dr /usr/lib/qt* 2>/dev/null`
`ls -dr /usr/local/qt* 2>/dev/null`
`ls -dr /opt/qt* 2>/dev/null`
"
for bnv_dir in $bnv_dir_list; do
if ls $bnv_dir/libqt* >/dev/null 2>/dev/null; then
# Gamble that it's the first one...
bnv_qt_lib="`ls $bnv_dir/libqt* | sed -n 1p |
sed s@$bnv_dir/lib@@ | sed s/[[.]].*//`"
bnv_qt_lib_dir="$bnv_dir"
break
fi
done
# Try with that one
LIBS="-l$bnv_qt_lib $X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS"
AC_TRY_LINK([#include <$qt_direct_test_header>],
$qt_direct_test_main,
[
# Success.
# We can link with no special library directory.
bnv_qt_lib_dir=
], [
# Leave bnv_qt_lib_dir defined
])
])
])
])
if test x"$bnv_qt_lib_dir" != x; then
bnv_qt_LIBS="-L$bnv_qt_lib_dir $LIBS"
else
bnv_qt_LIBS="$LIBS"
fi
LIBS="$bnv_save_LIBS"
CXXFLAGS="$bnv_save_CXXFLAGS"
fi dnl $with_Qt_lib_dir was not given
fi dnl Done setting up for non-traditional Trolltech installation
])
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.