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authornbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-09-28 18:09:41 +0000
committernbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-09-28 18:09:41 +0000
commitbf0b41e5aa9a447f609237204fdb5616b80cacc7 (patch)
tree86b0e0d6c97f564a52b12c7cd5151314006738f5
parent295c473ae49ca2acd9ddb84cd81ccd365b28aa03 (diff)
build: turn on package parallel builds by default and fix descriptions.
By default, this is only used when building with make -j. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33582 3c298f89-4303-0410-b956-a3cf2f4a3e73
-rw-r--r--Config.in27
1 files changed, 12 insertions, 15 deletions
diff --git a/Config.in b/Config.in
index e5b3346fe..bd4f63ea4 100644
--- a/Config.in
+++ b/Config.in
@@ -296,23 +296,12 @@ menu "Global build settings"
config PKG_BUILD_PARALLEL
bool
prompt "Compile certain packages parallelized"
- default n
+ default y
help
This adds a -jX option to certain packages that are known to
- behave well for parallel build.
-
- Note that this may overcommit CPU resources depending on the
- -j level of the main make process, the number of package
- submake jobs selected below and the number of actual CPUs present.
- Example: If the main make is passed a -j4 and the submake -j
- is also set to 4, we may end up with 16 parallel make processes
- in the worst case.
-
- You get maximum build performance, if you set the package build
- jobs to the number of CPUs (cores) available and also start the main
- make process with -jX, where X is the number of CPUs (cores).
- However, make sure you have enough RAM available for
- NR_CPUS to the power of two (NR_CPUS^2) make jobs.
+ behave well for parallel build. By default the package make processes
+ use the main jobserver, in which case this option only takes effect
+ when you add -jX to the make command.
If you are unsure, select N.
@@ -325,6 +314,14 @@ menu "Global build settings"
This passes the main make process jobserver fds to package builds,
enabling full parallelization across different packages
+ Note that disabling this may overcommit CPU resources depending on the
+ -j level of the main make process, the number of package
+ submake jobs selected below and the number of actual CPUs present.
+ Example: If the main make is passed a -j4 and the submake -j
+ is also set to 4, we may end up with 16 parallel make processes
+ in the worst case.
+
+
config PKG_BUILD_JOBS
int
prompt "Number of package submake jobs (2-512)"