Nothing
if (pkgbuild::has_rtools()) {
ver<-pkgbuild::rtools_needed()
CFLAGS<-""
if (ver != "Rtools 4.0") {
CFLAGS<-"-DH5_USE_110_API"
}
cat(CFLAGS)
quit("no", status=0)
}
quit("no", status=127)
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