Postinstall script errors on cygwin x86 install

[Achim Gratz]

Brent writes:
> I recently encountered a very similar problem, and I think that I have
> a simple solution, so I wanted to followup.

I don't think you've solved your problem.

> --this morning, however, some R code failed that worked just 2 days ago (and was not changed in the interim...)
>     --actually, it was the R C++ compiler of some critical methods that was failing, not R per se
>     --the warning message was:
>         Warning: running command 'C:/PROGRA~1/RRO/R-31~1.2/bin/x64/R CMD SHLIB file9d81bb03ccf.cpp 2> file9d81bb03ccf.cpp.err.txt' had status 1
>               0 [main] make (1584) c:\Rtools\bin\make.exe: *** fatal error - cygheap base mismatch detected - 0xFCF408/0xDDF408.
>         This problem is probably due to using incompatible versions of the cygwin DLL.
>         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.  Rebooting is also suggested if you
>         are unable to find another cygwin DLL.
>               0 [main] make 2544 fork: child -1 - forked process 1584 died unexpectedly, retry 0, exit code 0xC0000142, errno 11

You are obviously not using the R that comes with Cygwin and in addition
some extra stuff that lives in C:\Rtools.  And apparently, the latter
comes with their own Cygwin-based tools and gets delivered with their
own cygwin1.dll.  Now, If you had read the error message you might have
found where that second cygwin1.dll lives (and likely still lives).  The
next time you'll call the tools in whatever order to make that other
(older) cygwin1.dll load first or have the programs in Rtools try to use
the newer cygwin1.dll you will have that very same problem again.


Regards,
Achim.
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