--- qsampler/trunk/configure.ac	2018/01/10 21:27:30	3407
+++ qsampler/trunk/configure.ac	2021/04/01 21:49:01	3869
@@ -1,5 +1,5 @@
 # Process this file with autoconf to produce a configure script.
-AC_INIT(Qsampler, 0.5.1, rncbc@rncbc.org, qsampler)
+AC_INIT(Qsampler, 0.9.3, rncbc@rncbc.org, qsampler)
 
 AC_CONFIG_SRCDIR(src/qsampler.cpp)
 AC_CONFIG_HEADERS(src/config.h)
@@ -9,7 +9,7 @@
 AC_CACHE_VAL([ac_cv_build_version], [
    ac_cv_build_version=$(git describe --tags --dirty --abbrev=6 2>/dev/null)
    if test -n "$ac_cv_build_version"; then
-      ac_cv_build_version=$(echo $ac_cv_build_version | sed 's/^[[^_]]*[[_v]]//i')
+      ac_cv_build_version=$(echo $ac_cv_build_version | sed 's/^[[^0-9]]\+//')
       ac_cv_build_version=$(echo $ac_cv_build_version | sed 's/-g/git./')
       ac_cv_build_version=$(echo $ac_cv_build_version | sed 's/[[_|-]]\+/./g')
       ac_cv_build_version_extra=$(git rev-parse --abbrev-ref HEAD 2>/dev/null)
@@ -67,6 +67,13 @@
   AS_HELP_STRING([--enable-debug], [enable debugging (default=no)]),
   [ac_debug="$enableval"])
 
+# Enable Qt6 build preference.
+AC_ARG_ENABLE(qt6,
+  AS_HELP_STRING([--enable-qt6], [enable Qt6 build (default=no)]),
+  [ac_qt6="$enableval"],
+  [ac_qt6="no"])
+
+
 if test "x$ac_debug" = "xyes"; then
    AC_DEFINE(CONFIG_DEBUG, 1, [Define if debugging is enabled.])
    ac_stacktrace="yes"
@@ -78,22 +85,15 @@
 AC_SUBST(ac_debug)
 
 
-# Enable Qt4/5 availability.
-AC_ARG_ENABLE(qt4,
-  AS_HELP_STRING([--enable-qt4], [enable Qt4 build (default=no)]),
-  [ac_qt4="$enableval"],
-  [ac_qt4="no"])
-
-
 # Enable libgig availability.
 AC_ARG_ENABLE(libgig,
   AS_HELP_STRING([--enable-libgig], [enable libgig interface (default=yes)]),
   [ac_libgig="$enableval"],
   [ac_libgig="yes"])
 
-# Enable X11 unique/single instance.
+# Enable unique/single instance.
 AC_ARG_ENABLE(xunique,
-  AS_HELP_STRING([--enable-xunique], [enable X11 unique/single instance (default=yes)]),
+  AS_HELP_STRING([--enable-xunique], [enable unique/single instance (default=yes)]),
   [ac_xunique="$enableval"],
   [ac_xunique="yes"])
 
@@ -105,33 +105,17 @@
 
 # Standard installation base dirs.
 ac_path=$PATH
+ac_pkg_config_path=$PKG_CONFIG_PATH
 ac_with_paths=""
 
-# Set for alternate Qt4/5 installation dir.
+# Set for alternate Qt installation dir.
 AC_ARG_WITH(qt,
   AS_HELP_STRING([--with-qt=PATH], [use alternate Qt install path]),
   [ac_qt_path="$withval"], [ac_qt_path="no"])
 
-AC_ARG_WITH(qt4,
-  AS_HELP_STRING([--with-qt4=PATH], [use alternate Qt4 install path]),
-  [ac_qt4_path="$withval"], [ac_qt4_path="no"])
-
-AC_ARG_WITH(qt5,
-  AS_HELP_STRING([--with-qt5=PATH], [use alternate Qt5 install path]),
-  [ac_qt5_path="$withval"], [ac_qt5_path="no"])
-
 if test "x$ac_qt_path" != "xno"; then
    ac_path="$ac_qt_path/bin:$ac_path"
-fi
-
-if test "x$ac_qt4_path" != "xno"; then
-   ac_path="$ac_qt4_path/bin:$ac_path"
-   ac_qt4="yes"
-fi
-
-if test "x$ac_qt5_path" != "xno"; then
-   ac_path="$ac_qt5_path/bin:$ac_path"
-   ac_qt4="no"
+   ac_pkg_config_path="$ac_qt_path/lib/pkgconfig:$ac_pkg_config_path"
 fi
 
 # Set for alternate liblscp installation dir.
@@ -172,6 +156,10 @@
 ac_gxx_version_major=$ac_cv_gxx_version_major
 if test $ac_gxx_version_major -ge 4 -a $ac_gxx_version_major -lt 6; then
    CXXFLAGS="-std=c++11 $CXXFLAGS"
+   ac_cflags="-std=c++11 $ac_cflags"
+elif test $ac_gxx_version_major -ge 6 -a $ac_gxx_version_major -lt 11; then
+   CXXFLAGS="-std=c++17 $CXXFLAGS"
+   ac_cflags="-std=c++17 $ac_cflags"
 fi
 
 # Check for proper flags.
@@ -201,19 +189,37 @@
      if test -d $X/$Y; then
         LIBS="-L$X/$Y $LIBS"
         ac_libs="-L$X/$Y $ac_libs"
+        if test -d $X/$Y/pkgconfig; then
+           ac_pkg_config_path="$X/$Y/pkgconfig:$ac_pkg_config_path"
+        fi
      fi
   done
 done
 
+# Set pkg-config path.
+if test -n "$ac_pkg_config_path"; then
+   export PKG_CONFIG_PATH=$ac_pkg_config_path
+fi
+
+
 # A common error message:
 ac_errmsg="not found in current PATH. Maybe QT development environment isn't available."
 
+# Check for qtchooser availability.
+AC_PATH_TOOL(ac_qtchooser, qtchooser, [no], $ac_path)
+if test -x $ac_qtchooser; then
+   if test "x$ac_qt6" = "xyes"; then
+      export QT_SELECT=6
+   else
+      export QT_SELECT=5
+   fi
+fi
+
 # Check for proper qmake path/version alternatives.
 AC_PATH_TOOL(ac_qmake, qmake, [no], $ac_path)
-
 if test "x$ac_qmake" = "xno"; then
-   if test "x$ac_qt4" = "xyes"; then
-      AC_PATH_TOOL(ac_cv_qmake, qmake-qt4, [no], $ac_path)
+   if test "x$ac_qt6" = "xyes"; then
+      AC_PATH_TOOL(ac_cv_qmake, qmake-qt6, [no], $ac_path)
       ac_qmake=$ac_cv_qmake
    else
       AC_PATH_TOOL(ac_cv_qmake, qmake-qt5, [no], $ac_path)
@@ -223,27 +229,17 @@
 
 # Check for proper Qt major version.
 AC_CACHE_CHECK([for Qt major version], [ac_cv_qt_version_major], [
-   ac_cv_qt_version_major=$($ac_qmake -query QT_VERSION | cut -d'.' -f1)
+   ac_cv_qt_version=$($ac_qmake -query QT_VERSION)
+   ac_cv_qt_version_major=$(echo $ac_cv_qt_version | cut -d'.' -f1)
    ac_cv_qt_version_major=$(($ac_cv_qt_version_major + 0))
 ])
+ac_qt_version=$ac_cv_qt_version
 ac_qt_version_major=$ac_cv_qt_version_major
-if test "x$ac_qt4" = "xyes"; then
-   if test $ac_qt_version_major -ne 4; then
-      AC_PATH_TOOL(ac_cv_qmake, qmake-qt4, [no], $ac_path)
-      ac_qmake=$ac_cv_qmake
-   fi
-else
-   if test $ac_qt_version_major -ne 5; then
-      AC_PATH_TOOL(ac_cv_qmake, qmake-qt5, [no], $ac_path)
-      ac_qmake=$ac_cv_qmake
-   fi
-fi
-
 if test "x$ac_qmake" = "xno"; then
-   if test "x$ac_qt4" = "xyes"; then
-      AC_MSG_ERROR([qmake-qt4 $ac_errmsg (qt4-devel)])
-   else
+   if test $ac_qt_version_major -lt 6; then
       AC_MSG_ERROR([qmake-qt5 $ac_errmsg (qt5-devel)])
+   else
+      AC_MSG_ERROR([qmake-qt6 $ac_errmsg (qt6-devel)])
    fi
 fi
 
@@ -284,32 +280,18 @@
    ac_libs="-L$ac_qt_install_libs $ac_libs"
 fi
 
-# Finally, check for proper Qt4/5 version.
-if test "x$ac_qt4" = "xyes"; then
-   AC_CACHE_CHECK([for Qt library version >= 4.4],
-      ac_cv_qtversion, [
-      AC_TRY_COMPILE([#include "QtCore/qglobal.h"], [
-         #if QT_VERSION < 0x040400 || QT_VERSION >= 0x050000
-         #error Qt library 4.4 or greater required.
-         #endif
-      ], ac_cv_qtversion="yes", [
-         echo "no; Qt 4.4 or greater is required"
-         exit 1
-      ])
-   ])
-else
-   AC_CACHE_CHECK([for Qt library version >= 5.1],
-      ac_cv_qtversion, [
-      AC_TRY_COMPILE([#include "QtCore/qglobal.h"], [
-         #if QT_VERSION < 0x050100 || QT_VERSION >= 0x060000
-         #error Qt library 5.1 or greater required.
-         #endif
-      ], ac_cv_qtversion="yes", [
-         echo "no; Qt 5.1 or greater is required"
-         exit 1
-      ])
+# Finally, check for proper Qt version.
+AC_CACHE_CHECK([for Qt library version >= 5.1],
+   ac_cv_qtversion, [
+   AC_TRY_COMPILE([#include "QtCore/qglobal.h"], [
+      #if QT_VERSION < 0x050100
+      #error Qt library 5.1 or greater required.
+      #endif
+   ], ac_cv_qtversion="yes", [
+      echo "no; Qt 5.1 or greater is required"
+      exit 1
    ])
-fi
+])
 
 # Check for Qt moc utility.
 AC_PATH_TOOL(ac_moc, moc, [no], $ac_path)
@@ -325,17 +307,44 @@
 fi
 AC_SUBST(ac_uic)
 
+
 # Check for Qt lupdate utility.
 AC_PATH_TOOL(ac_lupdate, lupdate, [no], $ac_path)
 if test "x$ac_lupdate" = "xno"; then
-   AC_MSG_ERROR([lupdate $ac_errmsg])
+   if test $ac_qt_version_major -lt 6; then
+      AC_PATH_TOOL(ac_cv_lupdate, lupdate-qt5, [no], $ac_path)
+   else
+      AC_PATH_TOOL(ac_cv_lupdate, lupdate-qt6, [no], $ac_path)
+   fi
+   if test "x$ac_cv_lupdate" = "xno"; then
+      if test $ac_qt_version_major -lt 6; then
+         AC_MSG_ERROR([lupdate $ac_errmsg (qt5-linguist)])
+      else
+         AC_MSG_ERROR([lupdate $ac_errmsg (qt6-linguist)])
+      fi
+   else
+      ac_lupdate=$ac_cv_lupdate;
+   fi
 fi
 AC_SUBST(ac_lupdate)
 
 # Check for Qt lrelease utility.
 AC_PATH_TOOL(ac_lrelease, lrelease, [no], $ac_path)
-if test "x$ac_release" = "xno"; then
-   AC_MSG_ERROR([lrelease $ac_errmsg])
+if test "x$ac_lrelease" = "xno"; then
+   if test $ac_qt_version_major -lt 6; then
+      AC_PATH_TOOL(ac_cv_lrelease, lrelease-qt5, [no], $ac_path)
+   else
+      AC_PATH_TOOL(ac_cv_lrelease, lrelease-qt6, [no], $ac_path)
+   fi
+   if test "x$ac_cv_lrelease" = "xno"; then
+      if test $ac_qt_version_major -lt 6; then
+         AC_MSG_ERROR([lrelease $ac_errmsg (qt5-linguist)])
+      else
+         AC_MSG_ERROR([lrelease $ac_errmsg (qt6-linguist)])
+      fi
+   else
+      ac_lrelease=$ac_cv_lrelease;
+   fi
 fi
 AC_SUBST(ac_lrelease)
 
@@ -484,6 +493,11 @@
   AC_DEFINE(CONFIG_MAX_VOICES, 1, [Define if max. voices / streams is available.])
 fi
 
+AC_CHECK_LIB(lscp, lscp_client_connection_lost, [ac_lscp_conn_lost="yes"], [ac_lscp_conn_lost="no"])
+if test "x$ac_lscp_conn_lost" = "xyes"; then
+  AC_DEFINE(CONFIG_LSCP_CLIENT_CONNECTION_LOST, 1, [Define if liblscp function lscp_client_connection_lost() is available.])
+fi
+
 # Check for optional libraries.
 if test "x$ac_libgig" = "xyes"; then
    PKG_CHECK_MODULES([GIG], [gig >= 3.3.0], [ac_libgig="yes"], [ac_libgig="no"])
@@ -520,21 +534,19 @@
    fi
 fi
 
-# Check for X11 unique/single instance.
-if test "x$ac_xunique" = "xyes" -a "x$ac_qt4" = "xno"; then
-   PKG_CHECK_MODULES([QT5X11EXTRAS], [Qt5X11Extras], [ac_xunique="yes"], [ac_xunique="no"])
-fi
+# Check for unique/single instance support.
 if test "x$ac_xunique" = "xyes"; then
-   AC_DEFINE(CONFIG_XUNIQUE, 1, [Define if X11 unique/single instance is enabled.])
-   if test "x$ac_qt4" = "xno"; then
-      ac_qx11extras="x11extras"
-   fi
-   # Some recent distros (eg. fedora, debian) require this.
-   if test "x$ac_cv_lib_X11_main" = "xyes"; then
-      ac_libs="$ac_libs -lX11"
+   if test $ac_qt_version_major -lt 6; then
+      PKG_CHECK_MODULES([QT5NETWORK], [Qt5Network], [ac_xunique="yes"], [ac_xunique="no"])
+   else
+      PKG_CHECK_MODULES([QT6NETWORK], [Qt6Network], [ac_xunique="yes"], [ac_xunique="no"])
    fi
 fi
-AC_SUBST(ac_qx11extras)
+if test "x$ac_xunique" = "xyes"; then
+   AC_DEFINE(CONFIG_XUNIQUE, 1, [Define if unique/single instance is enabled.])
+   ac_qnetwork="network"
+fi
+AC_SUBST(ac_qnetwork)
 
 # Check for debugging stack-trace.
 if test "x$ac_stacktrace" = "xyes"; then
@@ -561,7 +573,7 @@
 # Output summary message
 
 echo
-echo "  $PACKAGE_NAME $ac_build_version"
+echo "  $PACKAGE_NAME $ac_build_version (Qt $ac_qt_version)"
 echo
 echo "  Build target . . . . . . . . . . . . . . . . . . .: $ac_debug"
 echo
@@ -582,8 +594,9 @@
 echo "  LSCP channel MIDI event support  . . . . . . . . .: $ac_channel_midi_event"
 echo "  LSCP device MIDI event support . . . . . . . . . .: $ac_device_midi_event"
 echo "  LSCP runtime max. voices / disk streams support  .: $ac_max_voices"
+echo "  LSCP connection loss support . . . . . . . . . . .: $ac_lscp_conn_lost"
 echo
-echo "  X11 Unique/Single instance . . . . . . . . . . . .: $ac_xunique"
+echo "  Unique/Single instance support . . . . . . . . . .: $ac_xunique"
 echo "  Debugger stack-trace (gdb) . . . . . . . . . . . .: $ac_stacktrace"
 echo
 echo "  Install prefix . . . . . . . . . . . . . . . . . .: $ac_prefix"