EVK-W16 - User Guide
UBX-15017061 - R02
Advance Information
Yocto environment setup
Page 20 of 38
The local.conf file contains local settings, such as the machine on which distro can be built. The DL_DIR variable
should match the location where you want to save all your downloaded tarballs and git archives from the build
process. As this information enables you to save bandwidth and time, it is better to go through the different
settings and modify them, if required. The default settings are used in this document.
3.1.1
Build default distribution
You can now start the build and refer to the
Yocto Quick Start Guide agreement
for additional information.
The build takes approximately 1 to 4 hours depending on the specifications of the compiling machine and the
speed of your internet connection.
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# Where to place downloads
#
# During a first build the system will download many different source code tarballs
# from various upstream projects. This can take a while, particularly if your network
# connection is slow. These are all stored in DL_DIR. When wiping and rebuilding you
# can preserve this directory to speed up this part of subsequent builds. This directory
# is safe to share between multiple builds on the same machine too.
#
# The default is a downloads directory under TOPDIR which is the build directory.
#
DL_DIR := "/home/martin/projects/yocto/downloads"
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# Make use of SMP:
# PARALLEL_MAKE specifies how many concurrent compiler threads are spawned
# per bitbake process
# BB_NUMBER_THREADS specifies how many concurrent bitbake tasks that spawns
PARALLEL_MAKE = "-j 3"
BB_NUMBER_THREADS = "3"
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