Index: devel/RStudio/Makefile
===================================================================
--- devel/RStudio/Makefile
+++ devel/RStudio/Makefile
@@ -46,6 +46,8 @@
 GWT_VERSION=	2.7.0
 GIN_VERSION=	1.5
 
+MAKE_JOBS_NUMBER_LIMIT=	1  # comment out if you have sufficiently large kern.maxfiles sysctl value, see the comment above
+
 post-extract:
 	@${MKDIR} ${WRKSRC}/dependencies/common/dictionaries && ${MV} ${WRKDIR}/en_* ${WRKSRC}/dependencies/common/dictionaries/
 	@${MV} ${WRKDIR}/mathjax-* ${WRKSRC}/dependencies/common/