linuxfb: Add config.test and configure support

The code is exactly the same as what is already done for DirectFB.

Change-Id: I3b84e67a3e999f692da4110f3ac9c82d98b0637c
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
Reviewed-by: Girish Ramakrishnan <girish.1.ramakrishnan@nokia.com>

4 files changed, 101 insertions, 2 deletions

diff --git a/config.tests/qpa/linuxfb/linuxfb.cpp b/config.tests/qpa/linuxfb/linuxfb.cpp
new file mode 100644
index 0000000000..bfc78dce5f
--- /dev/null
+++ b/config.tests/qpa/linuxfb/linuxfb.cpp
@@ -0,0 +1,55 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the config.tests of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <linux/fb.h>
+#include <sys/ioctl.h>
+
+int main(int, char **)
+{
+    fb_fix_screeninfo finfo;
+    fb_var_screeninfo vinfo;
+
+    int fd = 3;
+    ioctl(fd, FBIOGET_FSCREENINFO, &finfo);
+    ioctl(fd, FBIOGET_VSCREENINFO, &vinfo);
+
+    return 0;
+}
diff --git a/config.tests/qpa/linuxfb/linuxfb.pro b/config.tests/qpa/linuxfb/linuxfb.pro
new file mode 100644
index 0000000000..45db4b78dd
--- /dev/null
+++ b/config.tests/qpa/linuxfb/linuxfb.pro
@@ -0,0 +1,3 @@
+SOURCES = linuxfb.cpp
+
+CONFIG -= qt
diff --git a/configure b/configure
index 6054437a5b..5f118ee2cc 100755
--- a/configure
+++ b/configure
@@ -747,6 +747,7 @@ CFG_XCB=auto
 CFG_XCB_LIMITED=yes
 CFG_EGLFS=auto
 CFG_DIRECTFB=auto
+CFG_LINUXFB=auto
 CFG_LIBUDEV=auto
 CFG_OBSOLETE_WAYLAND=no
 CFG_EVDEV=auto
@@ -1660,6 +1661,13 @@ while [ "$#" -gt 0 ]; do
             UNKNOWN_OPT=yes
         fi
         ;;
+    linuxfb)
+        if [ "$VAL" = "yes" ] || [ "$VAL" = "no" ]; then
+            CFG_LINUXFB="$VAL"
+        else
+            UNKNOWN_OPT=yes
+        fi
+        ;;
     libudev)
         if [ "$VAL" = "yes" ] || [ "$VAL" = "no" ]; then
             CFG_LIBUDEV="$VAL"
@@ -2848,6 +2856,15 @@ if [ "$OPT_HELP" = "yes" ]; then
         DFBY="*"
         DFBN=" "
     fi
+
+    if [ "$CFG_LINUXFB" = "no" ]; then
+        LFBY=" "
+        LFBN="*"
+    else
+        LFBY="*"
+        LFBN=" "
+    fi
+
     if [ "$CFG_XINPUT2" = "no" ]; then
         X2Y=" "
         X2N="*"
@@ -3140,6 +3157,9 @@ Additional options:
  $DFBN  -no-directfb ....... Do not compile DirectFB support.
  $DFBY  -directfb .......... Compile DirectFB support.
 
+ $LFBN  -no-linuxfb ........ Do not compile Linux Framebuffer support.
+ $LFBY  -linuxfb ........... Compile Linux Framebuffer support.
+
     -qpa <name> ......... Sets the default QPA platform (e.g xcb, cocoa, windows).
 
     -xplatform target ... The target platform when cross-compiling.
@@ -4592,6 +4612,7 @@ fi
 ORIG_CFG_XCB="$CFG_XCB"
 ORIG_CFG_EGLFS="$CFG_EGLFS"
 ORIG_CFG_DIRECTFB="$CFG_DIRECTFB"
+ORIG_CFG_LINUXFB="$CFG_LINUXFB"
 
 if [ "$CFG_LIBUDEV" != "no" ]; then
     if [ -n "$PKG_CONFIG" ] && $PKG_CONFIG --exists libudev 2>/dev/null; then
@@ -4717,6 +4738,20 @@ if [ "$CFG_DIRECTFB" != "no" ]; then
     fi
 fi
 
+if [ "$CFG_LINUXFB" != "no" ]; then
+    if "$unixtests/compile.test" "$XQMAKESPEC" "$QMAKE_CONFIG" $OPT_VERBOSE "$relpath" "$outpath" "config.tests/qpa/linuxfb" "LinuxFB" $L_FLAGS $I_FLAGS $D_FLAGS $l_FLAGS; then
+        CFG_LINUXFB=yes
+    elif [ "$CFG_LINUXFB" = "yes" ] && [ "$CFG_CONFIGURE_EXIT_ON_ERROR" = "yes" ]; then
+        echo " Linux Framebuffer support cannot be enabled due to functionality tests!"
+        echo " Turn on verbose messaging (-v) to $0 to see the final report."
+        echo " If you believe this message is in error you may use the continue"
+        echo " switch (-continue) to $0 to continue."
+        exit 101
+    else
+        CFG_LINUXFB=no
+    fi
+fi
+
 # Detect libxkbcommon
 if [ -n "$PKG_CONFIG" ] && $PKG_CONFIG --exists xkbcommon 2>/dev/null; then
     QMAKE_CFLAGS_XKBCOMMON="`$PKG_CONFIG --cflags xkbcommon 2>/dev/null`"
@@ -4790,6 +4825,9 @@ if [ "$CFG_DIRECTFB" = "yes" ]; then
     QMakeVar set QMAKE_CFLAGS_DIRECTFB "$QMAKE_CFLAGS_DIRECTFB"
     QMakeVar set QMAKE_LIBS_DIRECTFB "$QMAKE_LIBS_DIRECTFB"
 fi
+if [ "$CFG_LINUXFB" = "yes" ]; then
+    QT_CONFIG="$QT_CONFIG linuxfb"
+fi
 
 if [ "$BUILD_ON_MAC" = "yes" ]; then
     if "$unixtests/compile.test" "$XQMAKESPEC" "$QMAKE_CONFIG" $OPT_VERBOSE "$relpath" "$outpath" config.tests/mac/coreservices "CoreServices" $L_FLAGS $I_FLAGS $D_FLAGS $l_FLAGS $MAC_CONFIG_TEST_COMMANDLINE; then
@@ -4800,9 +4838,9 @@ if [ "$BUILD_ON_MAC" = "yes" ]; then
 fi
 
 if [ "$BUILD_ON_MAC" = "no" ] && [ "$XPLATFORM_MINGW" = "no" ] && [ "$XPLATFORM_QNX" = "no" ]; then
-    if [ "$CFG_XCB" = "no" ] && [ "$CFG_EGLFS" = "no" ] && [ "$CFG_DIRECTFB" = "no" ]; then
+    if [ "$CFG_XCB" = "no" ] && [ "$CFG_EGLFS" = "no" ] && [ "$CFG_DIRECTFB" = "no" ] && [ "$CFG_LINUXFB" = "no" ]; then
         if [ "$QPA_PLATFORM_GUARD" = "yes" ] &&
-            ( [ "$ORIG_CFG_XCB" = "auto" ] || [ "$ORIG_CFG_EGLFS" = "auto" ] || [ "$ORIG_CFG_DIRECTFB" = "auto" ] ); then
+            ( [ "$ORIG_CFG_XCB" = "auto" ] || [ "$ORIG_CFG_EGLFS" = "auto" ] || [ "$ORIG_CFG_DIRECTFB" = "auto" ] || [ "$ORIG_CFG_LINUXFB" = "auto" ] ); then
         echo "No QPA platform plugin enabled!"
         echo " If you really want to build without a QPA platform plugin you must pass"
         echo " -no-qpa-platform-guard to configure. Doing this will"
@@ -6093,6 +6131,7 @@ if [ "$XPLATFORM_MAEMO" = "yes" ] && [ "$CFG_XCB" = "yes" ]; then
 fi
 echo "EGLFS support .......... $CFG_EGLFS"
 echo "DirectFB support ....... $CFG_DIRECTFB"
+echo "LinuxFB support ........ $CFG_LINUXFB"
 echo
 
 # complain about not being able to use dynamic plugins if we are using a static build
diff --git a/src/plugins/platforms/platforms.pro b/src/plugins/platforms/platforms.pro
index 3d3b647ff0..fe3b9d707a 100644
--- a/src/plugins/platforms/platforms.pro
+++ b/src/plugins/platforms/platforms.pro
@@ -22,3 +22,5 @@ contains(QT_CONFIG, eglfs) {
 contains(QT_CONFIG, directfb) {
     SUBDIRS += directfb
 }
+
+contains(QT_CONFIG, linuxfb): SUBDIRS += linuxfb