Partial Revert "Disable pkg-config, when x-compiling for mingw"

This partially reverts commit c7d5071afc6c76925c90ff35041dc4eb86511271.

Despite what the commit message said, pkg-config previously worked
and was useful, particularly for static Qt. Qt itself even installs
its own .pc files.

Note: The mkspec win32-g++-cross had a PKG_CONFIG definition to avoid
using the pkg-config installation on the build machine.

cherry-picked from qt5/qtbase commit 7d9b5e8e7d2094dedbe7e3e2f961544f233ce57e
Change-Id: I6c6ed81b2ab42c9cf7f7e250feeeb9c34c8877e7
Reviewed-by: Peter Kümmel <syntheticpp@gmx.net>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/configure b/configure
index d19f4432d0..bfaee0e361 100755
--- a/configure
+++ b/configure
@@ -1684,7 +1684,6 @@ while [ "$#" -gt 0 ]; do
         case `basename "$XPLATFORM"` in win32-g++*)
             XPLATFORM_MINGW=yes
             CFG_RPATH=no
-            PKG_CONFIG=no
             CFG_REDUCE_EXPORTS=no
             ;;
         esac