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Re: MAKE_JOBS.devel/cmake ineffective

On Thu, Nov 05, 2020 at 01:26:26AM +0100, Roland Illig wrote:
 > On 04.11.2020 14:44, Joerg Sonnenberger wrote:
 > > At least for bmake it makes a huge difference and not necessarily in the
 > > right direction. -j1 and no -j are quite different modes.
 > To explain this a bit more:
 > Without the -j, each shell command for a target is run in its own
 > subshell, which means that exit or cd will not affect subsequent
 > commands.  Very simple commands completely bypass the shell, using
 > execvp directly.
 > In -j mode (whether -j1 or -j8), all shell commands of a target are
 > first written to a temporary shell program that is then executed.  An
 > exit in the first of these commands will skip all subsequent commands of
 > that target.

That said, any package that breaks on this difference is wrong and
should be patched up :-)

David A. Holland

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