diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index b644a8d82d..e6a0b9741a 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -17,6 +17,12 @@
    past entries belonging to author(s): Viktor Szakats.
 */
 
+2010-03-25 23:19 UTC+0100 Viktor Szakats (harbour.01 syenar.hu)
+  ! bin/postinst.bat
+    Fixed to not make unnecessary hbmk2 calls and warnings for
+    unset external components when HB_BUILD_IMPLIB=yes.
+    sf.bet bug #2976700
+
 2010-03-25 21:37 UTC+0100 Przemyslaw Czerpak (druzus/at/priv.onet.pl)
   * harbour/src/vm/hvmall.c
     ! added missing HB_STACK_PRELOAD - the performance of MT HVM
@@ -53,7 +59,7 @@
       1) Click the icon itself to define a tool,
       2) Select from icon's drop-down list to execute.
          The execution is also available from within its interface <Execute> button.
-    
+
     ! Reworked: "Panels" interface. Now it is a toolbar icon with drop-down menu.
       This interface is much-more elegant and effective in operations.
 
@@ -63,17 +69,17 @@
                 concating after its original name. c:\x\my.prg => c:\x\my.prg.tmp
               if application exits normally, theis temp file is deleted,
               the same is done with every "SAve" invocation.
-              if at next run, this file is detected, it is asked to replace the 
+              if at next run, this file is detected, it is asked to replace the
                 original one.
 
     + Introduced: again, the animated controls, i.e., gradients on the menus, toolbars, etc,
       but are controlled via "Toggle Animation" option in the "View" sub-menu of main menu.
       This implementation is not made persistent, need to hera from you.
 
-    ! Removed: "Always_On_Top" flag of Harbour Splash Screen. It was causing that in case 
+    ! Removed: "Always_On_Top" flag of Harbour Splash Screen. It was causing that in case
       of startup error, or info rendering, user was unable to view the same.
-    
-    . Back to the pavilion, after a tiring outing. So I could not compile 
+
+    . Back to the pavilion, after a tiring outing. So I could not compile
       all the changes I did before leaving, so please be patient if something goes weired.
 
 2010-03-25 13:52 UTC+0100 Przemyslaw Czerpak (druzus/at/priv.onet.pl)
diff --git a/harbour/bin/postinst.bat b/harbour/bin/postinst.bat
index d72169f3a6..8b1499bac8 100644
--- a/harbour/bin/postinst.bat
+++ b/harbour/bin/postinst.bat
@@ -81,32 +81,32 @@ if "%HB_SHELL%" == "nt" goto _SH_NT
 
    if not "%HB_BUILD_IMPLIB%" == "yes" goto _NO_IMPLIB
 
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ace32"     "%HB_WITH_ADS%\Redistribute\ace32.dll"
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ace32"     "%HB_WITH_ADS%\ace32.dll"
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ace32"     "%HB_WITH_ADS%\32bit\ace32.dll"
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\alleg"     "%HB_WITH_ALLEGRO%\..\bin\alleg42.dll"        -mkimplibms
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\sde61"     "%HB_WITH_APOLLO%\..\sde61.dll"
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\sde7"      "%HB_WITH_APOLLO%\..\sde7.dll"
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\blat"      "%HB_WITH_BLAT%\..\blat.dll"                  -mkimplibms
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\cairo"     "%HB_WITH_CAIRO%\..\..\bin\libcairo-2.dll"    -mkimplibms
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libcurl"   "%HB_WITH_CURL%\..\libcurl.dll"               -mkimplibms
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libcurl"   "%HB_WITH_CURL%\..\bin\libcurl.dll"           -mkimplibms
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\fbclient"  "%HB_WITH_FIREBIRD%\..\bin\fbclient.dll"
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\FreeImage" "%HB_WITH_FREEIMAGE%\..\Dist\FreeImage.dll"
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\bgd"       "%HB_WITH_GD%\..\bin\bgd.dll"
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libhpdf"   "%HB_WITH_LIBHARU%\..\libhpdf.dll"
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libhpdf"   "%HB_WITH_LIBHARU%\..\lib_dll\libhpdf.dll"
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libmysql"  "%HB_WITH_MYSQL%\..\bin\libmySQL.dll"
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ociliba"   "%HB_WITH_OCILIB%\..\lib32\ociliba.dll"
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ocilibm"   "%HB_WITH_OCILIB%\..\lib32\ocilibm.dll"
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ocilibw"   "%HB_WITH_OCILIB%\..\lib32\ocilibw.dll"
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libeay32"  "%HB_WITH_OPENSSL%\..\out32dll\libeay32.dll"  -mkimplibms
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ssleay32"  "%HB_WITH_OPENSSL%\..\out32dll\ssleay32.dll"  -mkimplibms
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libeay32"  "%HB_WITH_OPENSSL%\..\dll\libeay32.dll"       -mkimplibms
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ssleay32"  "%HB_WITH_OPENSSL%\..\dll\ssleay32.dll"       -mkimplibms
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libeay32"  "%HB_WITH_OPENSSL%\..\libeay32.dll"           -mkimplibms
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ssleay32"  "%HB_WITH_OPENSSL%\..\ssleay32.dll"           -mkimplibms
-   "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libpq"     "%HB_WITH_PGSQL%..\lib\libpq.dll"             -mkimplibms
+   if not "%HB_WITH_ADS%"       == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ace32"     "%HB_WITH_ADS%\Redistribute\ace32.dll"
+   if not "%HB_WITH_ADS%"       == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ace32"     "%HB_WITH_ADS%\ace32.dll"
+   if not "%HB_WITH_ADS%"       == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ace32"     "%HB_WITH_ADS%\32bit\ace32.dll"
+   if not "%HB_WITH_ALLEGRO%"   == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\alleg"     "%HB_WITH_ALLEGRO%\..\bin\alleg42.dll"        -mkimplibms
+   if not "%HB_WITH_APOLLO%"    == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\sde61"     "%HB_WITH_APOLLO%\..\sde61.dll"
+   if not "%HB_WITH_APOLLO%"    == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\sde7"      "%HB_WITH_APOLLO%\..\sde7.dll"
+   if not "%HB_WITH_BLAT%"      == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\blat"      "%HB_WITH_BLAT%\..\blat.dll"                  -mkimplibms
+   if not "%HB_WITH_CAIRO%"     == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\cairo"     "%HB_WITH_CAIRO%\..\..\bin\libcairo-2.dll"    -mkimplibms
+   if not "%HB_WITH_CURL%"      == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libcurl"   "%HB_WITH_CURL%\..\libcurl.dll"               -mkimplibms
+   if not "%HB_WITH_CURL%"      == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libcurl"   "%HB_WITH_CURL%\..\bin\libcurl.dll"           -mkimplibms
+   if not "%HB_WITH_FIREBIRD%"  == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\fbclient"  "%HB_WITH_FIREBIRD%\..\bin\fbclient.dll"
+   if not "%HB_WITH_FREEIMAGE%" == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\FreeImage" "%HB_WITH_FREEIMAGE%\..\Dist\FreeImage.dll"
+   if not "%HB_WITH_GD%"        == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\bgd"       "%HB_WITH_GD%\..\bin\bgd.dll"
+   if not "%HB_WITH_LIBHARU%"   == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libhpdf"   "%HB_WITH_LIBHARU%\..\libhpdf.dll"
+   if not "%HB_WITH_LIBHARU%"   == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libhpdf"   "%HB_WITH_LIBHARU%\..\lib_dll\libhpdf.dll"
+   if not "%HB_WITH_MYSQL%"     == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libmysql"  "%HB_WITH_MYSQL%\..\bin\libmySQL.dll"
+   if not "%HB_WITH_OCILIB%"    == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ociliba"   "%HB_WITH_OCILIB%\..\lib32\ociliba.dll"
+   if not "%HB_WITH_OCILIB%"    == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ocilibm"   "%HB_WITH_OCILIB%\..\lib32\ocilibm.dll"
+   if not "%HB_WITH_OCILIB%"    == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ocilibw"   "%HB_WITH_OCILIB%\..\lib32\ocilibw.dll"
+   if not "%HB_WITH_OPENSSL%"   == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libeay32"  "%HB_WITH_OPENSSL%\..\out32dll\libeay32.dll"  -mkimplibms
+   if not "%HB_WITH_OPENSSL%"   == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ssleay32"  "%HB_WITH_OPENSSL%\..\out32dll\ssleay32.dll"  -mkimplibms
+   if not "%HB_WITH_OPENSSL%"   == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libeay32"  "%HB_WITH_OPENSSL%\..\dll\libeay32.dll"       -mkimplibms
+   if not "%HB_WITH_OPENSSL%"   == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ssleay32"  "%HB_WITH_OPENSSL%\..\dll\ssleay32.dll"       -mkimplibms
+   if not "%HB_WITH_OPENSSL%"   == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libeay32"  "%HB_WITH_OPENSSL%\..\libeay32.dll"           -mkimplibms
+   if not "%HB_WITH_OPENSSL%"   == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\ssleay32"  "%HB_WITH_OPENSSL%\..\ssleay32.dll"           -mkimplibms
+   if not "%HB_WITH_PGSQL%"     == "" "%HB_HOST_BIN_DIR%\hbmk2" "-mkimplib=%HB_LIB_INSTALL%\libpq"     "%HB_WITH_PGSQL%..\lib\libpq.dll"             -mkimplibms
 
    rem ; Exception: We use static libs with mingw.
    if "%HB_COMPILER%" == "mingw" copy /b /y "%HB_WITH_OCILIB%\..\lib32\libociliba.a" "%HB_LIB_INSTALL%\libociliba.a"