build/source: add tip to increase system memory

Builds may fail due to insufficient system memory and the logs
may not provide clear indication to the correct error.

As a general note, we should recommend increasing the system
memory before running the builds on low end devices.

Signed-off-by: Abin Joseph <abinjose@qti.qualcomm.com>

Author: abinjose-qualcomm

topic/k2c-qli-build-ga/build_from_source_github.rst

@@ -71,6 +71,12 @@ Create and build a Yocto image:
          # copy kas lock file to meta-qcom repository
          cp meta-qcom-releases/lock.yml meta-qcom/ci/lock.yml
 
+.. note::
+
+   If you have limited resources on your system and are facing issues with the build, consider
+   increasing the swap space on your machine before running the build. Refer to the section
+   :ref:`Increase swap space <increase_swap_space>`.
+
 #. Build the software image. You define build targets based on machine and distribution combinations.
 
    .. container:: nohighlight

topic/k2c-qli-build-ga/howto_build.rst

@@ -111,6 +111,8 @@ The machine configurations have either UFS or EMMC storage enabled by default. U
       # QCOM_PARTITION_FILES_SUBDIR ?= "partitions/iq-615-evk/emmc"
       # QCOM_PARTITION_FILES_SUBDIR ?= "partitions/iq-615-evk/ufs"
 
+.. _increase_swap_space:
+
 Increase swap space
 ^^^^^^^^^^^^^^^^^^^^^^