> From: "Nagarjuna Badigunchala (RBEI/EAP4)" > <nagarjuna.badigunch...@in.bosch.com> > Date: Mon, 1 Feb 2016 11:18:38 +0000 > > Can somebody tell me how to use the parallelism feature of GNU make? > I tried to use the following command for parallel build but it is not working. > Make –j 7 –f makefile.mak build > When I execute the above command, I can see that the GNU make is utilizing > 40%-60% of CPU. When I > execute the same command using clearmake(clearmake –j 7 makefile.mak build) > process, I can see that > it is always utilizing 80-100% of CPU. Which informs that the GNU make > process is not using the parallelism. > Note: Versions of GNU make tested (3.81 and 4.1)
Add "--debug=j" to the make command-line switches and see if it launches more than one command at a time. Anyway, your makefile.mak file can be written in such a way as to effectively prohibit parallelism, due to how it lays out dependencies. _______________________________________________ Bug-make mailing list Bug-make@gnu.org https://lists.gnu.org/mailman/listinfo/bug-make
