export QT_NO_<foo> equivalents to the build system

this makes it possible to properly exclude entire subprojects based on the
availability of features, rather than stuffing every single source file
with #ifdefs.

the defines are aggregated from the -qconfig <profile>,
-no-feature-<foo> and some other configure flags.

usage:

load(qfeatures)
!contains(QT_DISABLED_FEATURES, textarea): SUBDIRS += textstuff

Task-number: QTBUG-28102
Change-Id: I83400632d64312fa4b907e1318dddfe27c432387
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Reviewed-by: Peter Hartmann <phartmann@blackberry.com>
Reviewed-by: Tasuku Suzuki <stasuku@gmail.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/configure b/configure
index 3a8665d1c2..b5e375baed 100755
--- a/configure
+++ b/configure
@@ -6682,6 +6682,16 @@ echo "QT_BUILD_PARTS += $CFG_BUILD_PARTS" >> "$QTMODULE.tmp"
 if [ -n "$CFG_SKIP_MODULES" ]; then
     echo "QT_SKIP_MODULES += $CFG_SKIP_MODULES" >> "$QTMODULE.tmp"
 fi
+DISABLED_FEATURES=
+for cfg in $QCONFIG_FLAGS; do
+    ncfg=${cfg#QT_NO_}
+    if [ x$ncfg != x$cfg ]; then
+        DISABLED_FEATURES="$DISABLED_FEATURES $ncfg"
+    fi
+done
+if [ -n "$DISABLED_FEATURES" ]; then
+    echo "QT_NO_DEFINES = $DISABLED_FEATURES" >> "$QTMODULE.tmp"
+fi
 echo "QT_QCONFIG_PATH = ${CFG_QCONFIG_PATH#$relpath/src/corelib/global/}" >> "$QTMODULE.tmp"
 
 cat >>"$QTMODULE.tmp" <<EOF