Remove support for -no-largefile

It's 2016, and file sizes larger than 4G are common, so
-no-largefile is something we really shouldn't support
anymore.

For now left the implementation as is, just removed the
configurability from the command line. But this should
really get replaced by decent configure checks that
check for 64bit stat() vs stat64() vs 32bit stat().

Change-Id: I057515e3cc1f06a022d80f02e866944428026b1d
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>

configure

@@ -699,7 +699,7 @@ CFG_ICONV=auto
 CFG_DBUS=auto
 CFG_GLIB=auto
 CFG_GTK=auto
-CFG_LARGEFILE=auto
+CFG_LARGEFILE=yes
 CFG_OPENSSL=auto
 CFG_LIBPROXY=auto
 CFG_SECURETRANSPORT=auto
@@ -1959,13 +1959,6 @@ while [ "$#" -gt 0 ]; do
             UNKNOWN_OPT=yes
         fi
         ;;
-    largefile)
-        if [ "$VAL" = "yes" ] || [ "$VAL" = "no" ]; then
-            CFG_LARGEFILE="$VAL"
-        else
-            UNKNOWN_OPT=yes
-        fi
-        ;;
     openssl)
         if [ "$VAL" = "yes" ] || [ "$VAL" = "no" ]; then
             CFG_OPENSSL="$VAL"
@@ -2335,9 +2328,6 @@ Configure options:
  *  -shared ............ Create and use shared Qt libraries.
     -static ............ Create and use static Qt libraries.
 
-    -no-largefile ...... Disables large file support.
- +  -largefile ......... Enables Qt to access files larger than 4 GB.
-
     -no-accessibility .. Do not compile Accessibility support.
                          Disabling accessibility is not recommended, as it will break QStyle
                          and may break other internal parts of Qt.
@@ -4619,11 +4609,6 @@ if [ "$CFG_SYSLOG" != "no" ]; then
     fi
 fi
 
-if [ "$CFG_LARGEFILE" = "auto" ]; then
-    #Large files should be enabled for all Linux systems
-    CFG_LARGEFILE=yes
-fi
-
 if [ "$CFG_GUI" = "no" ]; then
     QPA_PLATFORM_GUARD=no
 fi
@@ -6063,11 +6048,6 @@ elif [ "$CFG_GSTREAMER" = "1.0" ]; then
     fi
 fi
 
-if [ "$CFG_LARGEFILE" != "yes" ] && [ "$XPLATFORM_MINGW" = "yes" ]; then
-    echo "Warning: largefile support cannot be disabled for win32."
-    CFG_LARGEFILE="yes"
-fi
-
 #-------------------------------------------------------------------------------
 # ask for all that hasn't been auto-detected or specified in the arguments
 #-------------------------------------------------------------------------------
@@ -6998,7 +6978,6 @@ report_support "  Qt D-Bus ..............." "$CFG_DBUS" runtime "loading dbus-1
 report_support "  Qt Concurrent .........." "$CFG_CONCURRENT"
 report_support "  Qt GUI ................." "$CFG_GUI"
 report_support "  Qt Widgets ............." "$CFG_WIDGETS"
-report_support "  Large File ............." "$CFG_LARGEFILE"
 report_support "  QML debugging .........." "$CFG_QML_DEBUG"
 report_support "  Use system proxies ....." "$CFG_SYSTEM_PROXIES"
 

tools/configure/configureapp.cpp

@@ -1225,10 +1225,6 @@ void Configure::parseCmdLine()
             dictionary["QT_INOTIFY"] = "no";
         }
 
-        else if (configCmdLine.at(i) == "-largefile") {
-            dictionary["LARGE_FILE"] = "yes";
-        }
-
         else if (configCmdLine.at(i) == "-fontconfig") {
             dictionary["FONT_CONFIG"] = "yes";
         } else if (configCmdLine.at(i) == "-no-fontconfig") {
@@ -1776,8 +1772,6 @@ bool Configure::displayHelp()
         desc("QT_EVENTFD",  "yes",     "-eventfd",      "Enable eventfd(7) support in the UNIX event loop.");
         desc("QT_EVENTFD",  "no",      "-no-eventfd",   "Disable eventfd(7) support in the UNIX event loop.\n");
 
-        desc("LARGE_FILE",  "yes",     "-largefile",    "Enables Qt to access files larger than 4 GB.\n");
-
         desc("POSIX_IPC",   "yes",     "-posix-ipc",    "Enable POSIX IPC.\n");
 
         desc("QT_GLIB",     "yes",     "-glib",         "Compile Glib support.\n");
@@ -3630,7 +3624,6 @@ void Configure::displayConfig()
          << (dictionary[ "AVX512" ].isEmpty() ? QString("<none>") : dictionary[ "AVX512" ].toUpper()) << endl;
     sout << "NEON support................" << dictionary[ "NEON" ] << endl;
     sout << "OpenGL support.............." << dictionary[ "OPENGL" ] << endl;
-    sout << "Large File support.........." << dictionary[ "LARGE_FILE" ] << endl;
     sout << "NIS support................." << dictionary[ "NIS" ] << endl;
     sout << "Iconv support..............." << dictionary[ "QT_ICONV" ] << endl;
     sout << "Evdev support..............." << dictionary[ "QT_EVDEV" ] << endl;