Add logic to the MAKEALL script to determine the number of CPU cores on the system, and run a parallel build if there is more than one. Usually this significantrly accelerates builds.
Allow to manually adjust the number of parallel make jobs by using the "BUILD_NCPUS" environment variable.
Signed-off-by: Wolfgang Denk wd@denx.de --- MAKEALL | 11 ++++++++++- 1 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/MAKEALL b/MAKEALL index dbed268..a16549c 100755 --- a/MAKEALL +++ b/MAKEALL @@ -1,6 +1,15 @@ #!/bin/sh
-: ${JOBS:=} +# Determine number of CPU cores if no default was set +: ${BUILD_NCPUS:="`getconf _NPROCESSORS_ONLN`"} + +if [ "$BUILD_NCPUS" -gt 1 ] +then + JOBS=-j`expr "$BUILD_NCPUS" + 1` +else + JOBS="" +fi +
if [ "${CROSS_COMPILE}" ] ; then MAKE="make CROSS_COMPILE=${CROSS_COMPILE}"