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1 # ===========================================================================
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2 # https://www.gnu.org/software/autoconf-archive/ax_have_qt.html
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3 # ===========================================================================
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4 #
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5 # SYNOPSIS
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6 #
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7 # AX_HAVE_QT
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8 #
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9 # DESCRIPTION
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10 #
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11 # Searches $PATH and queries qmake for Qt include files, libraries and Qt
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12 # binary utilities. The macro only supports Qt5 or later.
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13 #
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14 # The following shell variable is set to either "yes" or "no":
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15 #
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16 # have_qt
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17 #
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18 # Additionally, the following variables are exported:
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19 #
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20 # QT_CXXFLAGS
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21 # QT_LIBS
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22 # QT_MOC
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23 # QT_UIC
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24 # QT_RCC
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25 # QT_LRELEASE
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26 # QT_LUPDATE
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27 # QT_DIR
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28 # QMAKE
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29 #
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30 # which respectively contain an "-I" flag pointing to the Qt include
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31 # directory, link flags necessary to link with Qt and X, the full path to
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32 # the meta object compiler and the user interface compiler both, and
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33 # finally the variable QTDIR as Qt likes to see it defined.
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34 #
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35 # Example lines for Makefile.in:
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36 #
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37 # CXXFLAGS = @QT_CXXFLAGS@
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38 # MOC = @QT_MOC@
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39 #
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40 # After the variables have been set, a trial compile and link is performed
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41 # to check the correct functioning of the meta object compiler. This test
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42 # may fail when the different detected elements stem from different
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43 # releases of the Qt framework. In that case, an error message is emitted
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44 # and configure stops.
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45 #
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46 # No common variables such as $LIBS or $CFLAGS are polluted.
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47 #
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48 # LICENSE
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49 #
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50 # Copyright (c) 2008 Bastiaan Veelo <Bastiaan@Veelo.net>
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51 # Copyright (c) 2014 Alex Henrie <alexhenrie24@gmail.com>
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52 #
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53 # Copying and distribution of this file, with or without modification, are
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54 # permitted in any medium without royalty provided the copyright notice
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55 # and this notice are preserved. This file is offered as-is, without any
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56 # warranty.
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57
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58 #serial 25
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59
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60 AU_ALIAS([BNV_HAVE_QT], [AX_HAVE_QT])
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61 AC_DEFUN([AX_HAVE_QT],
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62 [
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63 AC_REQUIRE([AC_PROG_CXX])
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64 AC_REQUIRE([AC_PATH_X])
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65 AC_REQUIRE([AC_PATH_XTRA])
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66 # openSUSE leap 15.3 installs qmake-qt5, not qmake, for example.
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67 # Store the full name (like qmake-qt5) into QMAKE
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68 # and the specifier (like -qt5 or empty) into am_have_qt_qmexe_suff.
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69 AC_ARG_VAR([QMAKE],"Qt make tool")
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70 AC_CHECK_TOOLS([QMAKE],[qmake qmake-qt6 qmake-qt5],[false])
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71
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72 AC_MSG_CHECKING(for Qt)
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73 am_have_qt_qmexe_suff=`echo $QMAKE | sed 's,^.*qmake,,'`
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74 # If we have Qt5 or later in the path, we're golden
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75 ver=`$QMAKE --version | grep -o "Qt version ."`
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76
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77 if test "$ver" ">" "Qt version 4"; then
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78 have_qt=yes
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79 # This pro file dumps qmake's variables, but it only works on Qt 5 or later
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80 am_have_qt_dir=`mktemp -d`
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81 am_have_qt_pro="$am_have_qt_dir/test.pro"
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82 am_have_qt_stash="$am_have_qt_dir/.qmake.stash"
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83 am_have_qt_makefile="$am_have_qt_dir/Makefile"
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264
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84 am_have_qt_makefile_vars="$am_have_qt_dir/Makefile.vars"
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258
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85 # http://qt-project.org/doc/qt-5/qmake-variable-reference.html#qt
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86 cat > $am_have_qt_pro << EOF
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87 win32 {
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88 CONFIG -= debug_and_release
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89 CONFIG += release
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90 }
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91 qtHaveModule(core): QT += core
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92 qtHaveModule(gui): QT += gui
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93 qtHaveModule(widgets): QT += widgets
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264
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94 EOF
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95 cat > "$am_have_qt_makefile_vars" << EOF
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96 include $am_have_qt_makefile
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97
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98 # todo: use printf here
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99 CXXFLAGS:
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100 @echo \$(CXXFLAGS) \$(INCPATH)
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101
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102 LIBS:
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103 @echo \$(LIBS)
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258
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104 EOF
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105 $QMAKE $am_have_qt_pro -o $am_have_qt_makefile
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264
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106 QT_CXXFLAGS=`cd $am_have_qt_dir; make -s -f $am_have_qt_makefile_vars CXXFLAGS`
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107 QT_LIBS=`cd $am_have_qt_dir; make -s -f $am_have_qt_makefile_vars LIBS`
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258
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108 rm $am_have_qt_pro $am_have_qt_stash $am_have_qt_makefile
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109 rmdir $am_have_qt_dir
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110
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111 # Look for specific tools in $PATH
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112 QT_MOC=`which moc$am_have_qt_qmexe_suff`
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113 QT_UIC=`which uic$am_have_qt_qmexe_suff`
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114 QT_RCC=`which rcc$am_have_qt_qmexe_suff`
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115 QT_LRELEASE=`which lrelease$am_have_qt_qmexe_suff`
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116 QT_LUPDATE=`which lupdate$am_have_qt_qmexe_suff`
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117
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118 # Get Qt version from qmake
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119 QT_DIR=`$QMAKE --version | grep -o -E /.+`
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120
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121 # All variables are defined, report the result
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122 AC_MSG_RESULT([$have_qt:
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123 QT_CXXFLAGS=$QT_CXXFLAGS
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124 QT_DIR=$QT_DIR
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125 QT_LIBS=$QT_LIBS
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126 QT_UIC=$QT_UIC
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127 QT_MOC=$QT_MOC
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128 QT_RCC=$QT_RCC
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129 QT_LRELEASE=$QT_LRELEASE
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130 QT_LUPDATE=$QT_LUPDATE])
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131 else
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132 # Qt was not found
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133 have_qt=no
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134 QT_CXXFLAGS=
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135 QT_DIR=
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136 QT_LIBS=
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137 QT_UIC=
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138 QT_MOC=
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139 QT_RCC=
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140 QT_LRELEASE=
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141 QT_LUPDATE=
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142 AC_MSG_RESULT($have_qt)
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143 fi
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144 AC_SUBST(QT_CXXFLAGS)
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145 AC_SUBST(QT_DIR)
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146 AC_SUBST(QT_LIBS)
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147 AC_SUBST(QT_UIC)
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148 AC_SUBST(QT_MOC)
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149 AC_SUBST(QT_RCC)
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150 AC_SUBST(QT_LRELEASE)
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151 AC_SUBST(QT_LUPDATE)
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152 AC_SUBST(QMAKE)
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153
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154 #### Being paranoid:
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155 if test x"$have_qt" = xyes; then
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156 AC_MSG_CHECKING(correct functioning of Qt installation)
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157 AC_CACHE_VAL(ax_cv_qt_test_result,
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158 [
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159 cat > ax_qt_test.h << EOF
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160 #include <qobject.h>
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161 class Test : public QObject
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162 {
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163 Q_OBJECT
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164 public:
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165 Test() {}
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166 ~Test() {}
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167 public slots:
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168 void receive() {}
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169 signals:
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170 void send();
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171 };
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172 EOF
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173
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174 cat > ax_qt_main.$ac_ext << EOF
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175 #include "ax_qt_test.h"
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176 #include <qapplication.h>
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177 int main( int argc, char **argv )
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178 {
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179 QApplication app( argc, argv );
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180 Test t;
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181 QObject::connect( &t, SIGNAL(send()), &t, SLOT(receive()) );
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182 }
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183 EOF
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184
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185 ax_cv_qt_test_result="failure"
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186 ax_try_1="$QT_MOC ax_qt_test.h -o moc_ax_qt_test.$ac_ext >/dev/null 2>/dev/null"
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187 AC_TRY_EVAL(ax_try_1)
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188 if test x"$ac_status" != x0; then
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189 echo "$ax_err_1" >&AS_MESSAGE_LOG_FD
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190 echo "configure: could not run $QT_MOC on:" >&AS_MESSAGE_LOG_FD
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191 cat ax_qt_test.h >&AS_MESSAGE_LOG_FD
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192 else
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193 ax_try_2="$CXX $QT_CXXFLAGS -c $CXXFLAGS -o moc_ax_qt_test.o moc_ax_qt_test.$ac_ext >/dev/null 2>/dev/null"
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194 AC_TRY_EVAL(ax_try_2)
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195 if test x"$ac_status" != x0; then
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196 echo "$ax_err_2" >&AS_MESSAGE_LOG_FD
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197 echo "configure: could not compile:" >&AS_MESSAGE_LOG_FD
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198 cat moc_ax_qt_test.$ac_ext >&AS_MESSAGE_LOG_FD
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199 else
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200 ax_try_3="$CXX $QT_CXXFLAGS -c $CXXFLAGS -o ax_qt_main.o ax_qt_main.$ac_ext >/dev/null 2>/dev/null"
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201 AC_TRY_EVAL(ax_try_3)
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202 if test x"$ac_status" != x0; then
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203 echo "$ax_err_3" >&AS_MESSAGE_LOG_FD
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204 echo "configure: could not compile:" >&AS_MESSAGE_LOG_FD
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205 cat ax_qt_main.$ac_ext >&AS_MESSAGE_LOG_FD
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206 else
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207 ax_try_4="$CXX -o ax_qt_main ax_qt_main.o moc_ax_qt_test.o $QT_LIBS $LIBS >/dev/null 2>/dev/null"
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208 AC_TRY_EVAL(ax_try_4)
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209 if test x"$ac_status" != x0; then
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210 echo "$ax_err_4" >&AS_MESSAGE_LOG_FD
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211 else
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212 ax_cv_qt_test_result="success"
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213 fi
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214 fi
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215 fi
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216 fi
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217 ])dnl AC_CACHE_VAL ax_cv_qt_test_result
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218 AC_MSG_RESULT([$ax_cv_qt_test_result])
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219 if test x"$ax_cv_qt_test_result" = "xfailure"; then
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220 AC_MSG_ERROR([Failed to find matching components of a complete
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221 Qt installation. Try using more options,
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222 see ./configure --help.])
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223 fi
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224
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225 rm -f ax_qt_test.h moc_ax_qt_test.$ac_ext moc_ax_qt_test.o \
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226 ax_qt_main.$ac_ext ax_qt_main.o ax_qt_main
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227 fi
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228 ])
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