diff --git a/bin/syncqt b/bin/syncqt
index eb7d9f0533..4b1338ef36 100755
--- a/bin/syncqt
+++ b/bin/syncqt
@@ -87,7 +87,7 @@ my $qtbasedir = dirname(dirname($0));
 normalizePath(\$qtbasedir) if (defined $qtbasedir);
 
 # will be defined based on the modules sync.profile
-our (%modules, %moduleheaders, @allmoduleheadersprivate, %classnames, %mastercontent, %modulepris, %explicitheaders, %deprecatedheaders);
+our (%modules, %moduleheaders, @allmoduleheadersprivate, %classnames, %modulepris, %explicitheaders, %deprecatedheaders);
 
 # global variables (modified by options)
 my $isunix = 0;
@@ -179,30 +179,6 @@ sub checkRelative {
     return 1;
 }
 
-######################################################################
-# Syntax:  shouldMasterInclude(iheader)
-# Params:  iheader, string, filename to verify inclusion
-#
-# Purpose: Determines if header should be in the master include file.
-# Returns: 0 if file contains "#pragma qt_no_master_include" or not
-#          able to open, else 1.
-######################################################################
-sub shouldMasterInclude {
-    my ($iheader) = @_;
-    return 0 if(basename($iheader) =~ /_/);
-    return 0 if(basename($iheader) =~ /qconfig/);
-    if(open(F, "<$iheader")) {
-        while(<F>) {
-            chomp;
-            return 0 if(/^\#pragma qt_no_master_include$/);
-        }
-        close(F);
-    } else {
-        return 0;
-    }
-    return 1;
-}
-
 ######################################################################
 # Syntax:  classNames(iheader)
 # Params:  iheader, string, filename to parse for classname "symlinks"
@@ -845,28 +821,6 @@ foreach my $lib (@modules_to_sync) {
     my $pri_install_pfiles = "";
     my $pri_install_qpafiles = "";
 
-    my $libcapitals = $lib;
-    $libcapitals =~ y/a-z/A-Z/;
-    my $master_contents = "#ifndef QT_".$libcapitals."_MODULE_H\n#define QT_".$libcapitals."_MODULE_H\n";
-
-    #get dependencies
-    if(-e "$dir/" . basename($dir) . ".pro") {
-        if(open(F, "<$dir/" . basename($dir) . ".pro")) {
-            while(my $line = <F>) {
-                chomp $line;
-                if($line =~ /^ *QT *\+?= *([^\r\n]*)/) {
-                    foreach(split(/ /, $1)) {
-                        $_ =~ s/-private$//;
-                        my $content = $mastercontent{$_};
-                        $master_contents .= $content if ($content);
-                    }
-                    last; #consecutive appearances are assumed to be private dependencies
-                }
-            }
-            close(F);
-        }
-    }
-
     push @{$inject_headers{$dir}}, lc($lib)."version.h";
     $classnames{lc($lib)."version.h"} = $lib."Version";
 
@@ -1026,9 +980,6 @@ foreach my $lib (@modules_to_sync) {
                             }
 
                             if($public_header) {
-                                #put it into the master file
-                                $master_contents .= "#include \"$public_header\"\n" if(shouldMasterInclude($iheader));
-
                                 #deal with the install directives
                                 if($public_header) {
                                     my $pri_install_iheader = fixPaths($iheader, $current_dir);
@@ -1086,9 +1037,6 @@ foreach my $lib (@modules_to_sync) {
         }
     }
 
-    # close the master include:
-    $master_contents .= "#endif\n";
-
     unless($showonly) {
         # create deprecated headers
         my $first = 1;
@@ -1151,35 +1099,9 @@ foreach my $lib (@modules_to_sync) {
             print " }\n" unless ($first);
         }
 
-        my @master_includes;
-        push @master_includes, "$out_basedir/include/$lib/$lib";
-        foreach my $master_include (@master_includes) {
-            #generate the "master" include file
-            my @tmp = split(/;/,$modules{$lib});
-            $pri_install_files .= fixPaths($master_include, $tmp[0]) . " "; #get the master file installed too
-            if($master_include && -e $master_include) {
-                open MASTERINCLUDE, "<$master_include";
-                local $/;
-                binmode MASTERINCLUDE;
-                my $oldmaster = <MASTERINCLUDE>;
-                close MASTERINCLUDE;
-                $oldmaster =~ s/\r//g; # remove \r's , so comparison is ok on all platforms
-                $master_include = 0 if($oldmaster eq $master_contents);
-            }
-            if($master_include && $master_contents) {
-                my $master_dir = dirname($master_include);
-                make_path($master_dir, $lib, $verbose_level);
-                open MASTERINCLUDE, ">$master_include";
-                print MASTERINCLUDE $master_contents;
-                close MASTERINCLUDE;
-                print "$lib: created header (master) file\n" if($verbose_level);
-            }
-        }
-
         # KDE-Compat master header for Phonon
         if ($lib eq "phonon") {
             syncHeader($lib, "$out_basedir/include/phonon_compat/Phonon/Phonon", "$out_basedir/include/phonon/phonon", 0);
-            $pri_install_files .= fixPaths("$out_basedir/include/phonon/phonon", "$basedir/src/phonon") . " ";
         }
 
         #handle the headers.pri for each module
@@ -1198,7 +1120,7 @@ foreach my $lib (@modules_to_sync) {
             $old_headers_pri_contents =~ s/\r//g; # remove \r's , so comparison is ok on all platforms
             $headers_pri_file = 0 if($old_headers_pri_contents eq $headers_pri_contents);
         }
-        if($headers_pri_file && $master_contents) {
+        if($headers_pri_file) {
             my $headers_pri_dir = dirname($headers_pri_file);
             make_path($headers_pri_dir, $lib, $verbose_level);
             open HEADERS_PRI_FILE, ">$headers_pri_file";
diff --git a/mkspecs/features/qt_module_headers.prf b/mkspecs/features/qt_module_headers.prf
index 37146ff6ec..6a1854a771 100644
--- a/mkspecs/features/qt_module_headers.prf
+++ b/mkspecs/features/qt_module_headers.prf
@@ -4,6 +4,15 @@ include($$MODULE_BASE_OUTDIR/include/$$TARGET/headers.pri, "", true)
 lctarget = $$lower($$TARGET)
 uctarget = $$upper($$TARGET)
 
+defineTest(shouldMasterInclude) {
+    bn = $$basename(1)
+    contains(bn, .*_.*):return(false)
+    contains(bn, ^qconfig.*):return(false)
+    lines = $$cat($$_PRO_FILE_PWD_/$$1, lines)
+    contains(lines, $${LITERAL_HASH}pragma qt_no_master_include):return(false)
+    return(true)
+}
+
 # Create module version header
 MODULE_VERSION_HEADER = $$find(SYNCQT.HEADER_FILES, (^|/)$${lctarget}version\\.h$)
 count(MODULE_VERSION_HEADER, 1) {
@@ -30,4 +39,23 @@ count(MODULE_VERSION_HEADER, 1) {
     HEADERS += $$MODULE_VERSION_HEADER
 }
 
+# Create a module master header
+MODULE_MASTER_HEADER = $$MODULE_BASE_OUTDIR/include/$$TARGET/$$TARGET
+!build_pass {
+    MODULE_MASTER_HEADER_CONT = \
+        "/* This file was generated by qmake with the info from $${_PRO_FILE_}. */" \
+        "$${LITERAL_HASH}ifndef QT_$${ucmodule}_MODULE_H" \
+        "$${LITERAL_HASH}define QT_$${ucmodule}_MODULE_H"
+    for(dep, MODULE_DEPENDS) {
+        depname = $$eval(QT.$${dep}.name)
+        MODULE_MASTER_HEADER_CONT += "$${LITERAL_HASH}include <$$depname/$$depname>"
+    }
+    for(hdr, SYNCQT.HEADER_FILES): \
+        shouldMasterInclude($$hdr): \
+            MODULE_MASTER_HEADER_CONT += "$${LITERAL_HASH}include \"$$replace(hdr, .*/, )\""
+    MODULE_MASTER_HEADER_CONT += "$${LITERAL_HASH}endif"
+    write_file($$MODULE_MASTER_HEADER, MODULE_MASTER_HEADER_CONT)|error("Aborting.")
+}
+SYNCQT.HEADER_FILES += $$MODULE_MASTER_HEADER
+
 CONFIG += qt_install_headers
diff --git a/sync.profile b/sync.profile
index 95ef1fd729..ee3014532a 100644
--- a/sync.profile
+++ b/sync.profile
@@ -32,16 +32,6 @@
     "qtconcurrentfilter.h" => "QtConcurrentFilter",
     "qtconcurrentrun.h" => "QtConcurrentRun",
 );
-%mastercontent = (
-    "core" => "#include <QtCore/QtCore>\n",
-    "gui" => "#include <QtGui/QtGui>\n",
-    "printsupport" => "#include <QtPrintSupport/QtPrintSupport>\n",
-    "widgets" => "#include <QtWidgets/QtWidgets>\n",
-    "network" => "#include <QtNetwork/QtNetwork>\n",
-    "opengl" => "#include <QtOpenGL/QtOpenGL>\n",
-    "xml" => "#include <QtXml/QtXml>\n",
-    "concurrent" => "#include <QtConcurrent/QtConcurrent>\n",
-);
 %deprecatedheaders = (
     "QtGui" =>  {
         "qplatformaccessibility_qpa.h" => "qpa/qplatformaccessibility.h",