proview-r: try force -j1

component/proviewR/buildout.cfg

@@ -395,6 +395,7 @@ environment =
   CFLAGS=-I${qt4-qmake:location}/include -I${qt4-qmake:location}/include/QtGui -I${libdb:location}/include
   LDFLAGS=-L${gcc:location}/lib -Wl,-rpath=${gcc:location}/lib -L${gcc:location}/lib64 -Wl,-rpath=${gcc:location}/lib64 -L${gettext:location}/lib -L${fontconfig:location}/lib -Wl,-rpath=${fontconfig:location}/lib -L${bison:location}/lib -L${libdb:location}/lib -L${gtk-2:location}/lib -L${zlib:location}/lib -Wl,-v
   DISPLAY=:99
+  MAKEFLAGS=-j1
 
 ld-library-path = ${alsa:location}/lib:${qt4-qmake:location}/lib:${libdb:location}/lib:${openssl:location}/lib:${gtk-2:location}/lib:${pango:location}/lib:${cairo:location}/lib:${atk:location}/lib:${harfbuzz:location}/lib:${libXext:location}/lib:${gdk-pixbuf:location}/lib:${gettext:location}/lib:${phonon-qt4:location}/lib:${pixman:location}/lib:${zlib:location}/lib:${libpng:location}/lib:${gcc:location}/lib:${gcc:location}/lib64:${fontconfig:location}/lib:${libX11:location}/lib:${freetype:location}/lib