Commit 926c4d89 authored by Francois Michonneau's avatar Francois Michonneau
Browse files

check knitr version before converting Rmd to md 

on a suggestion of @sritchie73 and @aammd
parent 3dbfc022

Makefile

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@@ -62,7 +62,8 @@ motivation.html : motivation.md _layouts/slides.revealjs Makefile 
	    -o $@ $<



# Pattern to convert R Markdown to Markdown.

%.md: %.Rmd $(R_CHUNK_OPTS)

%.md: %.Rmd $(R_CHUNK_OPTS) tools/check_knitr_version.R

	Rscript -e "source('tools/check_knitr_version.R')"

	Rscript -e "knitr::knit('$$(basename $<)', output = '$$(basename $@)')"



## commands : Display available commands.

tools/check_knitr_version.R

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if (require("knitr")) {

    if (packageVersion("knitr") < '1.9.19') {

        stop("knitr must be version 1.9.20 or higher")

    }

} else stop("knitr 1.9.20 or above is needed to build the lessons.")