diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index df1830f832..f05d0bd99a 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -8,6 +8,18 @@
    2009-12-31 13:59 UTC+0100 Foo Bar (foo.bar foobar.org)
 */
 
+2009-04-24 13:42 UTC+0200 Viktor Szakats (harbour.01 syenar hu)
+  * bin/postinst.bat
+    + Added support for HB_BUILD_IMPLIB for mingw.
+      (only when using Windows shell to build it, which is now the
+      preferred method.)
+      ace32 implib method was applied to most other libs, too. I didn't
+      test it, it may need further tweaks. I'll tweak it gradually, with
+      hbmk2 it is probably better to use implibs from native locations
+      where possible (like we do for QT on all platforms and like we do
+      for all non-Win platforms), so even other compilers may get
+      further changes.
+
 2009-04-24 13:18 UTC+0200 Viktor Szakats (harbour.01 syenar hu)
   * INSTALL
     * Changed QT examples according to 4.5.1 new default dir layout.
diff --git a/harbour/bin/postinst.bat b/harbour/bin/postinst.bat
index 3e3d757b4e..52b288eb97 100644
--- a/harbour/bin/postinst.bat
+++ b/harbour/bin/postinst.bat
@@ -107,6 +107,32 @@ if "%HB_BUILD_IMPLIB%" == "yes" (
          goto END
       )
 
+      if "%HB_COMPILER%" == "mingw" (
+
+         if exist "%HB_DIR_ADS%\Redistribute\ace32.lib"    copy /b /y "%HB_DIR_ADS%\Redistribute\ace32.lib"    "%HB_LIB_INSTALL%\libace32.a"
+         if exist "%HB_DIR_ADS%\ace32.lib"                 copy /b /y "%HB_DIR_ADS%\ace32.lib"                 "%HB_LIB_INSTALL%\libace32.a"
+         if exist "%HB_DIR_ADS%\32bit\ace32.lib"           copy /b /y "%HB_DIR_ADS%\32bit\ace32.lib"           "%HB_LIB_INSTALL%\libace32.a"
+         if exist "%HB_DIR_ALLEGRO%\lib\alleg.lib"         copy /b /y "%HB_DIR_ALLEGRO%\lib\alleg.lib"         "%HB_LIB_INSTALL%\liballeg.a"
+         if exist "%HB_DIR_BLAT%\full\blat.lib"            copy /b /y "%HB_DIR_BLAT%\full\blat.lib"            "%HB_LIB_INSTALL%\libblat.a"
+         if exist "%HB_DIR_CURL%\lib\libcurl.a"            copy /b /y "%HB_DIR_CURL%\lib\libcurl.a"            "%HB_LIB_INSTALL%\libcurl.a"
+         if exist "%HB_DIR_CURL%\lib\libcurldll.a"         copy /b /y "%HB_DIR_CURL%\lib\libcurldll.a"         "%HB_LIB_INSTALL%\libcurldll.a"
+         if exist "%HB_DIR_FIREBIRD%\lib\fbclient_ms.lib"  copy /b /y "%HB_DIR_FIREBIRD%\lib\fbclient_ms.lib"  "%HB_LIB_INSTALL%\libfbclient.a"
+         if exist "%HB_DIR_FREEIMAGE%\Dist\FreeImage.lib"  copy /b /y "%HB_DIR_FREEIMAGE%\Dist\FreeImage.lib"  "%HB_LIB_INSTALL%\libFreeImage.a"
+         if exist "%HB_DIR_GD%\lib\bgd.lib"                copy /b /y "%HB_DIR_GD%\lib\bgd.lib"                "%HB_LIB_INSTALL%\libbgd.a"
+         if exist "%HB_DIR_LIBHARU%\libhpdf.lib"           copy /b /y "%HB_DIR_LIBHARU%\libhpdf.lib"           "%HB_LIB_INSTALL%\libhpdf.a"
+         if exist "%HB_DIR_LIBHARU%\lib_dll\libhpdf.lib"   copy /b /y "%HB_DIR_LIBHARU%\lib_dll\libhpdf.lib"   "%HB_LIB_INSTALL%\libhpdf.a"
+         if exist "%HB_DIR_MYSQL%\lib\opt\libmySQL.lib"    copy /b /y "%HB_DIR_MYSQL%\lib\opt\libmySQL.lib"    "%HB_LIB_INSTALL%\libmySQL.a"
+         if exist "%HB_DIR_OPENSSL%\out32dll\libeay32.lib" copy /b /y "%HB_DIR_OPENSSL%\out32dll\libeay32.lib" "%HB_LIB_INSTALL%\libeay32.a"
+         if exist "%HB_DIR_OPENSSL%\dll\libeay32.lib"      copy /b /y "%HB_DIR_OPENSSL%\dll\libeay32.lib"      "%HB_LIB_INSTALL%\libeay32.a"
+         if exist "%HB_DIR_OPENSSL%\libeay32.lib"          copy /b /y "%HB_DIR_OPENSSL%\libeay32.lib"          "%HB_LIB_INSTALL%\libeay32.a"
+         if exist "%HB_DIR_OPENSSL%\out32dll\ssleay32.lib" copy /b /y "%HB_DIR_OPENSSL%\out32dll\ssleay32.lib" "%HB_LIB_INSTALL%\libssleay32.a"
+         if exist "%HB_DIR_OPENSSL%\dll\ssleay32.lib"      copy /b /y "%HB_DIR_OPENSSL%\dll\ssleay32.lib"      "%HB_LIB_INSTALL%\libssleay32.a"
+         if exist "%HB_DIR_OPENSSL%\ssleay32.lib"          copy /b /y "%HB_DIR_OPENSSL%\ssleay32.lib"          "%HB_LIB_INSTALL%\libssleay32.a"
+         if exist "%HB_DIR_PGSQL%\lib\libpq.lib"           copy /b /y "%HB_DIR_PGSQL%\lib\libpq.lib"           "%HB_LIB_INSTALL%\libpq.a"
+
+         goto END
+      )
+
       if "%HB_COMPILER%" == "pocc" (
 
          if exist "%HB_DIR_ADS%\Redistribute\ace32.lib"    copy /b /y "%HB_DIR_ADS%\Redistribute\ace32.lib"    "%HB_LIB_INSTALL%\ace32.lib"