Add configure options for [experimental] HarfBuzz-NG support

Change-Id: I15f49b56f49ae53c16db904e03f668c3135edaa5
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

config.tests/unix/harfbuzz/harfbuzz.cpp

@@ -0,0 +1,60 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the config.tests of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <harfbuzz/hb.h>
+
+#if ((HB_VERSION_MAJOR*10000 + HB_VERSION_MINOR*100 + HB_VERSION_MICRO) < 912)
+#  error "This version of harfbuzz is too old."
+#endif
+
+int main(int, char **)
+{
+    hb_buffer_t *buffer = hb_buffer_create();
+
+    const uint16_t string[] = { 'A', 'b', 'c' };
+    hb_buffer_add_utf16(buffer, string, 3, 0, 3);
+    hb_buffer_guess_segment_properties(buffer);
+    hb_buffer_set_flags(buffer, hb_buffer_flags_t(HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES));
+
+    hb_buffer_destroy(buffer);
+
+    return 0;
+}

config.tests/unix/harfbuzz/harfbuzz.pro

@@ -0,0 +1,3 @@
+SOURCES = harfbuzz.cpp
+CONFIG -= qt dylib
+LIBS += -lharfbuzz

configure

@@ -892,6 +892,7 @@ CFG_EGL=auto
 CFG_SSE=auto
 CFG_FONTCONFIG=auto
 CFG_LIBFREETYPE=auto
+CFG_HARFBUZZ=no
 CFG_SQL_AVAILABLE=
 QT_ALL_BUILD_PARTS=" libs tools examples tests "
 QT_DEFAULT_BUILD_PARTS="libs tools examples"
@@ -969,7 +970,6 @@ CFG_INOTIFY=auto
 CFG_EVENTFD=auto
 CFG_RPATH=yes
 CFG_FRAMEWORK=auto
-CFG_MAC_HARFBUZZ=no
 DEFINES=
 D_FLAGS=
 I_FLAGS=
@@ -1495,8 +1495,9 @@ while [ "$#" -gt 0 ]; do
         OPT_OBSOLETE_HOST_ARG=yes
         ;;
     harfbuzz)
-        if ([ "$BUILD_ON_MAC" = "yes" ] && [ "$VAL" = "yes" ]) || [ "$VAL" = "no" ]; then
+        [ "$VAL" = "yes" ] && VAL=qt
-            CFG_MAC_HARFBUZZ="$VAL"
+        if [ "$VAL" = "qt" ] || [ "$VAL" = "no" ] || [ "$VAL" = "system" ]; then
+            CFG_HARFBUZZ="$VAL"
         else
             UNKNOWN_OPT=yes
         fi
@@ -3534,6 +3535,14 @@ Third Party Libraries:
  +  -system-libjpeg .... Use libjpeg from the operating system.
                          See http://www.ijg.org
 
+ *  -no-harfbuzz ....... Do not compile HarfBuzz-NG support.
+    -qt-harfbuzz ....... (experimental) Use HarfBuzz-NG bundled with Qt
+                         to do text shaping. It can still be disabled
+                         by setting QT_HARFBUZZ environment variable to "old".
+    -system-harfbuzz ... (experimental) Use HarfBuzz-NG from the operating system
+                         to do text shaping. It can still be disabled
+                         by setting QT_HARFBUZZ environment variable to "old".
+
     -no-openssl ........ Do not compile support for OpenSSL.
  +  -openssl ........... Enable run-time OpenSSL support.
     -openssl-linked .... Enabled linked OpenSSL support.
@@ -3702,10 +3711,6 @@ Qt/Mac only:
     -sdk <sdk> ......... Build Qt using Apple provided SDK <sdk>. The argument should be
                          one of the available SDKs as listed by 'xcodebuild -showsdks'.
 
-    -harfbuzz .......... Use HarfBuzz to do text layout instead of Core Text when possible.
- *  -no-harfbuzz ....... Disable HarfBuzz on Mac. It can still be enabled by setting
-                         QT_ENABLE_HARFBUZZ environment variable.
-
 EOF
 fi
 
@@ -5588,6 +5593,16 @@ if [ "$CFG_LIBFREETYPE" = "auto" ]; then
     fi
 fi
 
+# harfbuzz support
+[ "$XPLATFORM_MINGW" = "yes" ] && [ "$CFG_HARFBUZZ" = "auto" ] && CFG_HARFBUZZ=no
+if [ "$CFG_HARFBUZZ" = "auto" ]; then
+    if compileTest unix/harfbuzz "HarfBuzz"; then
+        CFG_HARFBUZZ=system
+    else
+        CFG_HARFBUZZ=yes
+    fi
+fi
+
 if ! compileTest unix/stl "STL" &&
     [ "$CFG_CONFIGURE_EXIT_ON_ERROR" = "yes" ]; then
     echo "STL functionality check failed! Cannot build Qt with this STL library."
@@ -6002,6 +6017,14 @@ elif [ "$CFG_LIBFREETYPE" = "system" ]; then
 else
     QT_CONFIG="$QT_CONFIG freetype"
 fi
+if [ "$CFG_HARFBUZZ" = "no" ]; then
+    QT_CONFIG="$QT_CONFIG no-harfbuzz"
+    QCONFIG_FLAGS="$QCONFIG_FLAGS QT_NO_HARFBUZZ"
+elif [ "$CFG_HARFBUZZ" = "system" ]; then
+    QT_CONFIG="$QT_CONFIG system-harfbuzz"
+else
+    QT_CONFIG="$QT_CONFIG harfbuzz"
+fi
 if [ "$CFG_GUI" = "auto" ]; then
     CFG_GUI="yes"
 fi
@@ -6036,7 +6059,6 @@ fi
 [ "$CFG_DBUS" = "linked" ] && QT_CONFIG="$QT_CONFIG dbus dbus-linked"
 [ "$CFG_OPENSSL" = "yes" ] && QT_CONFIG="$QT_CONFIG openssl"
 [ "$CFG_OPENSSL" = "linked" ] && QT_CONFIG="$QT_CONFIG openssl-linked"
-[ "$CFG_MAC_HARFBUZZ" = "yes" ] && QT_CONFIG="$QT_CONFIG harfbuzz"
 [ "$CFG_XCB" != "no" ] && QT_CONFIG="$QT_CONFIG xcb"
 [ "$CFG_XINPUT2" = "yes" ] && QT_CONFIG="$QT_CONFIG xinput2"
 [ "$CFG_SYSTEM_PROXIES" = "yes" ] && QT_CONFIG="$QT_CONFIG system-proxies"
@@ -6849,6 +6871,8 @@ report_support "  CUPS ..................." "$CFG_CUPS"
     report_support "  DirectWrite ............" "$CFG_DIRECTWRITE"
 report_support "  FontConfig ............." "$CFG_FONTCONFIG"
 report_support "  FreeType ..............." "$CFG_FREETYPE"
+[ "$CFG_HARFBUZZ" != "no" ] && \
+    report_support "  HarfBuzz ..............." "$CFG_HARFBUZZ"
 report_support "  Iconv .................." "$CFG_ICONV"
 report_support "  ICU ...................." "$CFG_ICU"
 report_support "  Image formats:"

tools/configure/configureapp.cpp

@@ -260,6 +260,7 @@ Configure::Configure(int& argc, char** argv)
     dictionary[ "LIBJPEG" ]         = "auto";
     dictionary[ "LIBPNG" ]          = "auto";
     dictionary[ "FREETYPE" ]        = "yes";
+    dictionary[ "HARFBUZZ" ]        = "no";
 
     dictionary[ "ACCESSIBILITY" ]   = "yes";
     dictionary[ "OPENGL" ]          = "yes";
@@ -566,6 +567,13 @@ void Configure::parseCmdLine()
         else if (configCmdLine.at(i) == "-system-freetype")
             dictionary[ "FREETYPE" ] = "system";
 
+        else if (configCmdLine.at(i) == "-no-harfbuzz")
+            dictionary[ "HARFBUZZ" ] = "no";
+        else if (configCmdLine.at(i) == "-qt-harfbuzz")
+            dictionary[ "HARFBUZZ" ] = "yes";
+        else if (configCmdLine.at(i) == "-system-harfbuzz")
+            dictionary[ "HARFBUZZ" ] = "system";
+
         // CE- C runtime --------------------------------------------
         else if (configCmdLine.at(i) == "-crt") {
             ++i;
@@ -1821,6 +1829,14 @@ bool Configure::displayHelp()
         desc("FREETYPE", "yes",  "-qt-freetype",        "Use the libfreetype bundled with Qt.");
         desc("FREETYPE", "system","-system-freetype",   "Use the libfreetype provided by the system.");
 
+        desc("HARFBUZZ", "no",   "-no-harfbuzz",        "Do not compile in HarfBuzz-NG support.");
+        desc("HARFBUZZ", "yes",  "-qt-harfbuzz",        "(experimental) Use HarfBuzz-NG bundled with Qt\n"
+                                                        "to do text shaping. It can still be disabled\n"
+                                                        "by setting QT_HARFBUZZ environment variable to \"old\".");
+        desc("HARFBUZZ", "system","-system-harfbuzz",   "(experimental) Use HarfBuzz-NG from the operating system\n"
+                                                        "to do text shaping. It can still be disabled\n"
+                                                        "by setting QT_HARFBUZZ environment variable to \"old\".");
+
         if ((platform() == QNX) || (platform() == BLACKBERRY)) {
             desc("SLOG2", "yes",  "-slog2",             "Compile with slog2 support.");
             desc("SLOG2", "no",  "-no-slog2",           "Do not compile with slog2 support.");
@@ -2071,6 +2087,9 @@ bool Configure::checkAvailability(const QString &part)
         available = checkAngleAvailability();
     }
 
+    else if (part == "HARFBUZZ")
+        available = tryCompileProject("unix/harfbuzz");
+
     else if (part == "LIBJPEG")
         available = findFile("jpeglib.h");
     else if (part == "LIBPNG")
@@ -2487,6 +2506,11 @@ void Configure::generateOutputVars()
     else if (dictionary[ "FREETYPE" ] == "system")
         qtConfig += "system-freetype";
 
+    if (dictionary[ "HARFBUZZ" ] == "yes")
+        qtConfig += "harfbuzz";
+    else if (dictionary[ "HARFBUZZ" ] == "system")
+        qtConfig += "system-harfbuzz";
+
     // Styles -------------------------------------------------------
     if (dictionary[ "STYLE_WINDOWS" ] == "yes")
         qmakeStyles += "windows";
@@ -3319,6 +3343,7 @@ void Configure::generateConfigfiles()
         if (dictionary["DBUS"] == "no")              qconfigList += "QT_NO_DBUS";
         if (dictionary["QML_DEBUG"] == "no")         qconfigList += "QT_QML_NO_DEBUGGER";
         if (dictionary["FREETYPE"] == "no")          qconfigList += "QT_NO_FREETYPE";
+        if (dictionary["HARFBUZZ"] == "no")          qconfigList += "QT_NO_HARFBUZZ";
         if (dictionary["NATIVE_GESTURES"] == "no")   qconfigList += "QT_NO_NATIVE_GESTURES";
 
         if (dictionary["OPENGL_ES_CM"] == "yes" ||
@@ -3488,6 +3513,7 @@ void Configure::displayConfig()
     sout << "    JPEG support............" << dictionary[ "JPEG" ] << endl;
     sout << "    PNG support............." << dictionary[ "PNG" ] << endl;
     sout << "    FreeType support........" << dictionary[ "FREETYPE" ] << endl;
+    sout << "    HarfBuzz-NG support....." << dictionary[ "HARFBUZZ" ] << endl;
     sout << "    PCRE support............" << dictionary[ "PCRE" ] << endl;
     sout << "    ICU support............." << dictionary[ "ICU" ] << endl;
     if ((platform() == QNX) || (platform() == BLACKBERRY))