Fix hang reported at #10307.

[lyx.git] / config / qt4.m4

diff --git a/config/qt4.m4 b/config/qt4.m4
index 14390f8443e7dce0d14bfc9fb604bcdf5faf2f91..2f5f775632cb63fa9ebff1d25e5e33bf4fa4e9e9 100644 (file)
--- a/config/qt4.m4
+++ b/config/qt4.m4
@@ -72,16 +72,19 @@ AC_DEFUN([QT_FIND_TOOL],
                qt_ext=qt5
        fi
 
-       lyx_qt_path=$PATH
        if test -n "$qt_cv_bin" ; then
-               lyx_qt_path=$qt_cv_bin:$PATH
-       fi
-
-       if qtchooser -l 2>/dev/null | grep -q ^$qt_ext\$ >/dev/null ; then
-               AC_CHECK_PROG($1, $2, [$2 -qt=$qt_ext],, [$lyx_qt_path])
+               AC_PATH_PROGS($1, [$2], [], $qt_cv_bin)
+       elif qtchooser -l 2>/dev/null | grep -q ^$qt_ext\$ >/dev/null ; then
+               AC_PATH_PROG(qtc_path, qtchooser, [], [$PATH])
+               AC_PATH_PROG($2_path, $2, [], [$PATH])
+               qtc_path=`dirname "$qtc_path"`
+               $2_path=`dirname "$$2_path"`
+               if test "$qtc_path" = "$$2_path" ; then
+                       AC_CHECK_PROG($1, $2, [$2 -qt=$qt_ext],, [$PATH])
+               fi
        fi
        if test -z "$$1"; then
-               AC_CHECK_PROGS($1, [$2-$qt_ext $2],[],$lyx_qt_path)
+               AC_CHECK_PROGS($1, [$2-$qt_ext $2],[],$PATH)
        fi
        if test -z "$$1"; then
                AC_MSG_ERROR([cannot find $2 binary.])
@@ -175,18 +178,30 @@ AC_DEFUN([QT_DO_IT_ALL],
        [AC_MSG_ERROR([LyX requires at least version $1 of Qt. Only version $QTLIB_VERSION has been found.])
        ])
 
+       save_CPPFLAGS=$CPPFLAGS
+       AC_MSG_CHECKING([whether Qt uses the X Window system])
+       CPPFLAGS="$save_CPPFLAGS $QT_CORE_INCLUDES"
        if test x$USE_QT5 = xyes ; then
-         save_CPPFLAGS=$CPPFLAGS
-         AC_MSG_CHECKING([whether Qt uses the X Window system])
-         CPPFLAGS="$save_CPPFLAGS $QT_CORE_INCLUDES"
          AC_EGREP_CPP(xcb,
            [#include <qconfig.h>
            QT_QPA_DEFAULT_PLATFORM_NAME],
            [AC_MSG_RESULT(yes)
             AC_DEFINE(QPA_XCB, 1, [Define if Qt uses the X Window System])],
            [AC_MSG_RESULT(no)])
-         CPPFLAGS=$save_CPPFLAGS
+       else
+         AC_PREPROC_IFELSE([AC_LANG_SOURCE([
+           [#include <qglobal.h>],
+           [#ifndef Q_WS_X11],
+           [#error Fail],
+           [#endif]])],
+           qt_use_x11=yes,
+           qt_use_x11=no)
+         AC_MSG_RESULT($qt_use_x11)
+         if test "x$qt_use_x11" = "xyes"; then
+           QT_LIB="$QT_LIB -lX11"
+         fi
        fi
+       CPPFLAGS=$save_CPPFLAGS
 
        QT_FIND_TOOL([QT_MOC], [moc])
        QT_FIND_TOOL([QT_UIC], [uic])
@@ -212,6 +227,13 @@ AC_DEFUN([QT_DO_PKG_CONFIG],
        if test "x$USE_QT5" != "xno" ; then
                qt_corelibs="Qt5Core"
                qt_guilibs="Qt5Core Qt5Concurrent Qt5Gui Qt5Svg Qt5Widgets"
+               lyx_use_x11extras=false
+               PKG_CHECK_EXISTS(Qt5X11Extras, [lyx_use_x11extras=true], [])
+               if $lyx_use_x11extras; then
+                       qt_guilibs="$qt_guilibs Qt5X11Extras xcb"
+                       AC_DEFINE(HAVE_QT5_X11_EXTRAS, 1,
+                               [Define if you have the Qt5X11Extras module])
+               fi
                lyx_use_winextras=false
                PKG_CHECK_EXISTS(Qt5WinExtras, [lyx_use_winextras=true], [])
                if $lyx_use_winextras; then