On Thu, 2 Feb 2006, Eric Blake wrote:
> > > But if cygexec mounting is turned on, then a native windows program
> > > in that mount point will be mistakenly treated as a cygwin program,
> > > such that cygwin tries to use only the cygwin method for passing the
> > > environment to the child program. My guess is that you are calling
> > > tclsh from a cygwin shell (bash?), and that cygwin is assuming the
> > > child (tclsh) can understand cygwin's environment because it lives
> > > in /bin, even though it is a windows native executable and needs the
> > > windows environment.
> >
> > Well, tclsh is a *Cygwin* executable that uses native Windows calls
> > (CreateProcess) under the covers (in tcl84.dll). I'm not sure if it
> > would even help to be able to mount it as a "non-cygwin executable"...
> > CGF?
>
> Really?
>
> $ cygcheck tclsh
> Found: C:\cygwin\bin\tclsh.exe
> C:/cygwin/bin/tclsh.exe
> $
>
> My understanding of the cygexec magic was that if it was determined that
> an .exe had a startup dependency on cygwin1.dll, but tclsh has NO dll
> dependencies at startup (any dlls are pulled in with dynamic loads
> during execution), so how would cygwin1.dll be able to think that tclsh
> is a cygwin executable?
Because tclsh.exe is a symlink to tclsh84.exe, which has
$ ls -l /bin/tclsh.exe
lrwxrwxrwx 1 Administrators SYSTEM 11 Jul 30 2004 /bin/tclsh.exe ->
tclsh84.exe*
$ cygcheck tclsh84
Found: C:\cygwin\bin\tclsh84.exe
C:/cygwin/bin/tclsh84.exe
C:\WINDOWS\System32\KERNEL32.dll
C:\WINDOWS\System32\ntdll.dll
C:\cygwin\bin\cygwin1.dll
C:\WINDOWS\System32\ADVAPI32.DLL
C:\WINDOWS\System32\RPCRT4.dll
C:\cygwin\bin\tcl84.dll
C:\WINDOWS\System32\USER32.dll
C:\WINDOWS\System32\GDI32.dll
I made the same mistake initially... :-)
Igor
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