Installing DLLs to the system directory

[soup-a-stu]

is it possible to extract DLL files to the system directory, but only if they don't already exist?

[dTomoyo]

Originally posted by soup-a-stu
is it possible to extract DLL files to the system directory, but only if they don't already exist?

code:


1) IfFileExists $SYSDIR\target.dll CheckVer InstNewVer

2) CheckVer:

     CompareDLLVersions source.dll $SYSDIR\target.dll InstNewVer SkipInst

3)  InstNewVer:

      SetOverwrite try

      SetOutPath $SYSDIR

      File source.dll

4) SkipInst:

1) if target.dll existed? goto CheckVer, else goto InstNewVer.
2) Compare DLL Version.
3) Install new version.
4) exit.

My trick...

[justin]

That actually won't work, because CompareDLLVersions compares two DLLs on the _target_ system.

What you have to do is this:

code:


; will update $SYSDIR\target.dll with my_updated_target.dll

SetOutPath $TEMP

File my_updated_target.dll

IfFileExists $SYSDIR\target.dll CheckVer InstNewVer

CheckVer:

     CompareDLLVersions $TEMP\my_updated_target.dll $SYSDIR\target.dll InstNewVer

     Goto SkipInst

InstNewVer:

     Rename /REBOOTOK $TEMP\my_updated_target.dll $SYSDIR\target.dll

     Goto End 

SkipInst:

     Delete $TEMP\my_updated_target.dll

End: