Opened 14 years ago

Closed 12 years ago

#35 closed defect (fixed)

DLL update procedure

Reported by: jef Owned by: jef
Priority: major Component: Installer
Version: 1.0 Keywords: dllupdate
Cc: hhayashi, warmerdam


Some DLLs should be update DLLs in %WINDIR%\system32 instead of just installing them into %OSGEO4W_ROOT%, if the are there.

E.g. it's likely to find an elder version of OpenSSL DLLs in %WINDIR%\system32, which breaks everything using SSL (like libcurl and in turn GDAL and everything that depends on it). This only applies to EXEs/DLLs that are loaded from different path than %OSGEO4W_ROOT%\bin (like Python extension, GRASS executables). About the DLL search order:

We should have a tool that can retrieve the version of a DLL and if necessary replaces it with a newer one. I found a code snippet that should how to retrieve the DLL version on

The update procedure should also consider replace on reboot, if the older version of the DLL is currently in use (osgeo4w-setup has code to do that).

A related posting of the qgis-developer list:

Attachments (1)

diff (3.3 KB ) - added by jef 14 years ago.
patch that adds a -reboot option to dllupdate that creates %OSGEO4W_ROOT%/etc/setup/reboot when a reboot is necessary, lets setup pick that up, issue a message box and remove the file.

Download all attachments as: .zip

Change History (7)

comment:1 by warmerdam, 14 years ago

Owner: changed from osgeo4w-dev@… to warmerdam
Status: newassigned

I have:

  • Implemented a dllupdate utility program that will replace a windows\system32 dll with a newer version if we have one. It is suitable for use from post install scripts.
  • I have factored libeay32.dll and ssleay32.dll out into a new pkg-openssl.
  • I have added a post install script in this package to use dllupdate to install these files into \windows\system32 if we appear to have a newer version.

I would appreciate testing of the new setting (via a standard package upgrade on a problem system).

Leaving open pending this test.

I would note that the PackagingInstructions have not been updated to reflect the availability of dllupdate (now part of pkg-msvcrt).

comment:2 by jef, 14 years ago

Summary: DLL installation procedureDLL update procedure

It might work better if we tried to install libeay32.dll/ssleay32.dll instead of libeay23.dll/ssleay23.dll ;)

Also Windows might be installed on a different drive. So I'd recommend to use %WINDIR% instead of hardcoding C:\WINDOWS.

Finally it would be nice if the installer scripts had a way to tell the installer to notify the user that a reboot is necessary. Maybe by creating a certain file (like %OSGEO4W_ROOT%/etc/reboot), which dllupdate could do in case a reboot is due.

comment:3 by warmerdam, 14 years ago

Keywords: dllupdate added

openssl.bat has been fixed to try and install libeay32.dll and ssleay32.dll in -2 package.

I have modified ddlupdate to use %WINDIR%, and this is in the -2 msvcrt package.

Modifying setup to report in use file replacement is more involved. I would be interested in doing it but I can't say when I will get to it. It might be prudent if it were filed as a distinct enhancement ticket.

by jef, 14 years ago

Attachment: diff added

patch that adds a -reboot option to dllupdate that creates %OSGEO4W_ROOT%/etc/setup/reboot when a reboot is necessary, lets setup pick that up, issue a message box and remove the file.

comment:4 by (none), 13 years ago

Milestone 1.0 Release deleted

comment:5 by warmerdam, 12 years ago

Cc: hhayashi warmerdam added
Owner: changed from warmerdam to jef
Status: assignednew


Sorry for neglecting this so long. I see I don't have my OSGeo4W setup.exe development environment setup any more. Perhaps you would like to apply the change and update packages accordingly yourself? Some notes are at:

I am adding Hayashi-san as a cc since he has done the most recent work on setup.exe and might want to know what is happening.

in reply to:  5 comment:6 by jef, 12 years ago

Resolution: fixed
Status: newclosed

Applied in r1168 (setup) and r1169 (dllupdate).

Also updated in testing:

  • osgeo4w-setup.exe in download and the packages
  • setup: containing the installer and dllupdate),
  • msvcrt: handling a reboot notification from vcredist install)
  • openssl: running dllupdate
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