diff --git a/mswindows/osgeo4w/build_osgeo4w.sh b/mswindows/osgeo4w/build_osgeo4w.sh
index f2524e67b9..cc1e4bc781 100755
--- a/mswindows/osgeo4w/build_osgeo4w.sh
+++ b/mswindows/osgeo4w/build_osgeo4w.sh
@@ -27,6 +27,13 @@ A=$(cygpath -w /mingw64/lib/pkgconfig)
 echo $A
 echo
 cygpath -u $A
+echo
+pkg-config --libs pdal
+pkg-config --libs /d/msys64/mingw64/lib/pkgconfig/pdal.pc
+pkg-config --libs /mingw64/lib/pkgconfig/pdal.pc
+echo
+which pkg-config
+echo
 
 ./configure \
     --host=${ARCH} \