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References: <a85b4ae5-2714-3075-bc1e-82e81595af98@gjunka.com>
Subject: Re: math/R build failed
From: Walter Schwarzenfeld <w.schwarzenfeld@utanet.at>
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Date: Sat, 14 May 2016 14:24:44 +0200
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It seems right.

Makefile
USE_TEX=                texlive dvipsk kpathsea pdftex

bsd.tex.mk# default TeX distribution.  "texlive"
TEX_DEFAULT?=   texlive

.if ${TEX_DEFAULT} != texlive
IGNORE=         Only 'texlive' is supported as value for TEX_DEFAULT
.endif


texlive is default. And if you read bsd.tex.mk it is not under "The 
other valid keywords"