Spurious "You have multiple copies of cygwin1.dll on your system."

[luke dot kendall at cisra dot canon dot com dot au]

After installing Cygwin by using a shell script running by executing
bash from a network-installed Cygwin, the script fails when it tries to
run a post-install script.  The error reported is:

    bash-2.05b$ post-install.sh -which latest -fresh
    c:\cygwin\bin\bash.exe (3208): *** cygheap version mismatch detected - 0x616D000
    0/0x61780000.
    You have multiple copies of cygwin1.dll on your system.
    Search for cygwin1.dll using the Windows Start->Find/Search facility
    and delete all but the most recent version.  The most recent version *should*
    reside in x:\cygwin\bin, where 'x' is the drive on which you have
    installed the cygwin distribution.

A search showed that there really is only c:\cygwin\bin\cygwin1.dll -
the message is wrong.

I'd say the sanity-check is detecting cygwin1.dll associated with the
bash that's running from the network-mounted drive.

Re-setting PATH to exclude the network Cygwin doesn't help, then doing
an "exec /bin/bash" gives the same error and of course the shell is
gone.

Do I simply have to live with this?

I can work around it by changing a driving .bat file from:

	set PATH=...;network-cygwin-path
	mount c:/  /
	bash   my-install-script

to:

	set PATH=...;network-cygwin-path
	mount c:/  /
	bash   my-install-script
	umount /
	set PATH=...;c:\cygwin\bin
	bash   my-post-install-script

which is clunkier, but will work in many cases.

I don't suppose there's any option to force cygwin to ignore its
erroneous error message?

luke


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