propagate errors from building base vignettes

git-svn-id: https://svn.r-project.org/R/trunk@87822 00db46b3-68df-0310-9c12-caf00c1e9a41

Author: smeyer

src/library/Makefile.in

@@ -108,7 +108,7 @@ vignettes:
 	    ($(ECHO) "tools:::.install_package_vignettes(\"$(srcdir)/$${pkg}\", \"$(top_builddir)/library/$${pkg}\")") | \
 	        R_DEFAULT_PACKAGES="utils,tools" LC_ALL=C \
 		  R_LIBS_USER=NULL R_LIBS_SITE=NULL \
-	          $(R_EXE) > /dev/null; \
+	          $(R_EXE) > /dev/null || exit 1; \
 	  done \
 	fi
 

src/library/Makefile.win

@@ -101,7 +101,7 @@ vignettes:
 	    ($(ECHO) "tools:::.install_package_vignettes(\"$(srcdir)/$${pkg}\", \"$(top_builddir)/library/$${pkg}\")") | \
 	        R_DEFAULT_PACKAGES="utils,tools" LC_ALL=C \
 		  R_LIBS_USER=NULL R_LIBS_SITE=NULL \
-	          $(R_EXE) > /dev/null; \
+	          $(R_EXE) > /dev/null || exit 1; \
 	done
 	@rm -Rf .vignettes