[Bioc-devel] iGraph depending packages failing on Windows build machines

petr smirnov psmirnov2000 at gmail.com
Wed Apr 11 01:44:21 CEST 2018

I noticed that our Bioconductor package (PharmacoGx) is failing to build on
Windows development, with the error:

 error: DLL 'maps' not found: maybe not installed for this architecture?

A google search brings up the package 'sincell', which has experienced this
error before.

The only dependency that package has is iGraph (CRAN), which we share with
them. Checking some of the build reports, there's a handful of packages
failing with the same issue.

There is also at least one package, 'Mulcom', that is failing with the

Error : package 'maps' is not installed for 'arch = i386'

The CRAN package 'maps' seems to be the one providing the 'maps.dll' file.
There seems to be a successful binary build of the 'maps' package on CRAN
for both the release and prerelease versions of R.

Is this is an issue with the package 'maps' not being successfully
installed on the Windows build system?

Petr Smirnov

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