Add note about removing -jX to facilitate finding make errors

diff --git a/Documentation/included/compile.itexi b/Documentation/included/compile.itexi
index b3bfb7705fe1b247077dee1438961805eaf7f7fd..3966ccfce47868e95ca2c308f067cba3a7e66b4f 100644 (file)
--- a/Documentation/included/compile.itexi
+++ b/Documentation/included/compile.itexi
@@ -468,6 +468,9 @@ make -j3
 If you get errors using the @option{-j} option, and @samp{make}
 succeeds without it, try lowering the @code{@var{X}} value.
 
+Because multiple jobs run in parallel when @option{-j} is used, it can
+be difficult to determine the source of an error when one occurs.  In
+that case, running @samp{make} without the @option{-j} is advised.
 
 @node Compiling for multiple platforms
 @subsection Compiling for multiple platforms