build: Fix Qt processing of configure script for depends with DEBUG=1

Now, if depends is built with DEBUG=1, the configure script correctly
finds Qt for macOS and Windows.

Author: hebasto

build-aux/m4/bitcoin_qt.m4

@@ -64,6 +64,13 @@ AC_DEFUN([BITCOIN_QT_INIT],[
     ],
     [bitcoin_qt_want_version=auto])
 
+  AS_IF([test "x$with_gui" = xqt5_debug],
+        [AS_CASE([$host],
+                 [*darwin*], [qt_lib_suffix=_debug],
+                 [*mingw*], [qt_lib_suffix=d],
+                 [qt_lib_suffix= ]); bitcoin_qt_want_version=qt5],
+        [qt_lib_suffix= ])
+
   AC_ARG_WITH([qt-incdir],[AS_HELP_STRING([--with-qt-incdir=INC_DIR],[specify qt include path (overridden by pkgconfig)])], [qt_include_path=$withval], [])
   AC_ARG_WITH([qt-libdir],[AS_HELP_STRING([--with-qt-libdir=LIB_DIR],[specify qt lib path (overridden by pkgconfig)])], [qt_lib_path=$withval], [])
   AC_ARG_WITH([qt-plugindir],[AS_HELP_STRING([--with-qt-plugindir=PLUGIN_DIR],[specify qt plugin path (overridden by pkgconfig)])], [qt_plugin_path=$withval], [])
@@ -285,13 +292,13 @@ dnl Output: QT_LIBS is prepended or configure exits.
 AC_DEFUN([_BITCOIN_QT_CHECK_STATIC_PLUGINS],[
   AC_MSG_CHECKING(for static Qt plugins: $2)
   CHECK_STATIC_PLUGINS_TEMP_LIBS="$LIBS"
-  LIBS="$2 $QT_LIBS $LIBS"
+  LIBS="$2${qt_lib_suffix} $QT_LIBS $LIBS"
   AC_LINK_IFELSE([AC_LANG_PROGRAM([[
     #define QT_STATICPLUGIN
     #include <QtPlugin>
     $1]],
     [[return 0;]])],
-    [AC_MSG_RESULT(yes); QT_LIBS="$2 $QT_LIBS"],
+    [AC_MSG_RESULT(yes); QT_LIBS="$2${qt_lib_suffix} $QT_LIBS"],
     [AC_MSG_RESULT(no); BITCOIN_QT_FAIL(Could not resolve: $2)])
   LIBS="$CHECK_STATIC_PLUGINS_TEMP_LIBS"
 ])
@@ -308,18 +315,18 @@ AC_DEFUN([_BITCOIN_QT_FIND_STATIC_PLUGINS],[
       if test -d "$qt_plugin_path/platforms/android"; then
         QT_LIBS="$QT_LIBS -L$qt_plugin_path/platforms/android -lqtfreetype -lEGL"
       fi
-      PKG_CHECK_MODULES([QTFONTDATABASE], [Qt5FontDatabaseSupport], [QT_LIBS="-lQt5FontDatabaseSupport $QT_LIBS"])
-      PKG_CHECK_MODULES([QTEVENTDISPATCHER], [Qt5EventDispatcherSupport], [QT_LIBS="-lQt5EventDispatcherSupport $QT_LIBS"])
-      PKG_CHECK_MODULES([QTTHEME], [Qt5ThemeSupport], [QT_LIBS="-lQt5ThemeSupport $QT_LIBS"])
-      PKG_CHECK_MODULES([QTDEVICEDISCOVERY], [Qt5DeviceDiscoverySupport], [QT_LIBS="-lQt5DeviceDiscoverySupport $QT_LIBS"])
-      PKG_CHECK_MODULES([QTACCESSIBILITY], [Qt5AccessibilitySupport], [QT_LIBS="-lQt5AccessibilitySupport $QT_LIBS"])
-      PKG_CHECK_MODULES([QTFB], [Qt5FbSupport], [QT_LIBS="-lQt5FbSupport $QT_LIBS"])
+      PKG_CHECK_MODULES([QTFONTDATABASE], [Qt5FontDatabaseSupport${qt_lib_suffix}], [QT_LIBS="-lQt5FontDatabaseSupport${qt_lib_suffix} $QT_LIBS"])
+      PKG_CHECK_MODULES([QTEVENTDISPATCHER], [Qt5EventDispatcherSupport${qt_lib_suffix}], [QT_LIBS="-lQt5EventDispatcherSupport${qt_lib_suffix} $QT_LIBS"])
+      PKG_CHECK_MODULES([QTTHEME], [Qt5ThemeSupport${qt_lib_suffix}], [QT_LIBS="-lQt5ThemeSupport${qt_lib_suffix} $QT_LIBS"])
+      PKG_CHECK_MODULES([QTDEVICEDISCOVERY], [Qt5DeviceDiscoverySupport${qt_lib_suffix}], [QT_LIBS="-lQt5DeviceDiscoverySupport${qt_lib_suffix} $QT_LIBS"])
+      PKG_CHECK_MODULES([QTACCESSIBILITY], [Qt5AccessibilitySupport${qt_lib_suffix}], [QT_LIBS="-lQt5AccessibilitySupport${qt_lib_suffix} $QT_LIBS"])
+      PKG_CHECK_MODULES([QTFB], [Qt5FbSupport${qt_lib_suffix}], [QT_LIBS="-lQt5FbSupport${qt_lib_suffix} $QT_LIBS"])
       if test "x$TARGET_OS" = xlinux; then
         PKG_CHECK_MODULES([QTXCBQPA], [Qt5XcbQpa], [QT_LIBS="$QTXCBQPA_LIBS $QT_LIBS"])
       elif test "x$TARGET_OS" = xdarwin; then
-        PKG_CHECK_MODULES([QTCLIPBOARD], [Qt5ClipboardSupport], [QT_LIBS="-lQt5ClipboardSupport $QT_LIBS"])
-        PKG_CHECK_MODULES([QTGRAPHICS], [Qt5GraphicsSupport], [QT_LIBS="-lQt5GraphicsSupport $QT_LIBS"])
-        PKG_CHECK_MODULES([QTCGL], [Qt5CglSupport], [QT_LIBS="-lQt5CglSupport $QT_LIBS"])
+        PKG_CHECK_MODULES([QTCLIPBOARD], [Qt5ClipboardSupport${qt_lib_suffix}], [QT_LIBS="-lQt5ClipboardSupport${qt_lib_suffix} $QT_LIBS"])
+        PKG_CHECK_MODULES([QTGRAPHICS], [Qt5GraphicsSupport${qt_lib_suffix}], [QT_LIBS="-lQt5GraphicsSupport${qt_lib_suffix} $QT_LIBS"])
+        PKG_CHECK_MODULES([QTCGL], [Qt5CglSupport${qt_lib_suffix}], [QT_LIBS="-lQt5CglSupport${qt_lib_suffix} $QT_LIBS"])
       fi
     fi
 ])
@@ -329,26 +336,26 @@ dnl Outputs: All necessary QT_* variables are set.
 dnl Outputs: have_qt_test and have_qt_dbus are set (if applicable) to yes|no.
 AC_DEFUN([_BITCOIN_QT_FIND_LIBS],[
   BITCOIN_QT_CHECK([
-    PKG_CHECK_MODULES([QT_CORE], [${qt_lib_prefix}Core $qt_version], [],
-                      [BITCOIN_QT_FAIL([${qt_lib_prefix}Core $qt_version not found])])
+    PKG_CHECK_MODULES([QT_CORE], [${qt_lib_prefix}Core${qt_lib_suffix} $qt_version], [],
+                      [BITCOIN_QT_FAIL([${qt_lib_prefix}Core${qt_lib_suffix} $qt_version not found])])
   ])
   BITCOIN_QT_CHECK([
-    PKG_CHECK_MODULES([QT_GUI], [${qt_lib_prefix}Gui $qt_version], [],
-                      [BITCOIN_QT_FAIL([${qt_lib_prefix}Gui $qt_version not found])])
+    PKG_CHECK_MODULES([QT_GUI], [${qt_lib_prefix}Gui${qt_lib_suffix} $qt_version], [],
+                      [BITCOIN_QT_FAIL([${qt_lib_prefix}Gui${qt_lib_suffix} $qt_version not found])])
   ])
   BITCOIN_QT_CHECK([
-    PKG_CHECK_MODULES([QT_WIDGETS], [${qt_lib_prefix}Widgets $qt_version], [],
-                      [BITCOIN_QT_FAIL([${qt_lib_prefix}Widgets $qt_version not found])])
+    PKG_CHECK_MODULES([QT_WIDGETS], [${qt_lib_prefix}Widgets${qt_lib_suffix} $qt_version], [],
+                      [BITCOIN_QT_FAIL([${qt_lib_prefix}Widgets${qt_lib_suffix} $qt_version not found])])
   ])
   BITCOIN_QT_CHECK([
-    PKG_CHECK_MODULES([QT_NETWORK], [${qt_lib_prefix}Network $qt_version], [],
-                      [BITCOIN_QT_FAIL([${qt_lib_prefix}Network $qt_version not found])])
+    PKG_CHECK_MODULES([QT_NETWORK], [${qt_lib_prefix}Network${qt_lib_suffix} $qt_version], [],
+                      [BITCOIN_QT_FAIL([${qt_lib_prefix}Network${qt_lib_suffix} $qt_version not found])])
   ])
   QT_INCLUDES="$QT_CORE_CFLAGS $QT_GUI_CFLAGS $QT_WIDGETS_CFLAGS $QT_NETWORK_CFLAGS"
   QT_LIBS="$QT_CORE_LIBS $QT_GUI_LIBS $QT_WIDGETS_LIBS $QT_NETWORK_LIBS"
 
   BITCOIN_QT_CHECK([
-    PKG_CHECK_MODULES([QT_TEST], [${qt_lib_prefix}Test $qt_version], [QT_TEST_INCLUDES="$QT_TEST_CFLAGS"; have_qt_test=yes], [have_qt_test=no])
+    PKG_CHECK_MODULES([QT_TEST], [${qt_lib_prefix}Test${qt_lib_suffix} $qt_version], [QT_TEST_INCLUDES="$QT_TEST_CFLAGS"; have_qt_test=yes], [have_qt_test=no])
     if test "x$use_dbus" != xno; then
       PKG_CHECK_MODULES([QT_DBUS], [${qt_lib_prefix}DBus $qt_version], [QT_DBUS_INCLUDES="$QT_DBUS_CFLAGS"; have_qt_dbus=yes], [have_qt_dbus=no])
     fi

depends/config.site.in

@@ -54,6 +54,10 @@ if test -z "$with_gui" && test -n "@no_qt@"; then
   with_gui=no
 fi
 
+if test -n "@debug@" && test -z "@no_qt@" && test "x$with_gui" != xno; then
+  with_gui=qt5_debug
+fi
+
 if test -z "$enable_zmq" && test -n "@no_zmq@"; then
   enable_zmq=no
 fi