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Clean kernel source directory before setting up make alias 

When kbuild is using a separate directory for output files then it will
check if the kernel source directory is clean.
The build will throw an error when the source directory is not clean:

  .. is not clean, please run 'make mrproper'

Once envkernel.sh has aliased the make command then make mrproper will
be run in the context of .output directory. If the source directory is not
clean then user may be wondering why make mrproper doesn't clean it.

This change will ensure that the source directory is clean when envkernel
is setup.
This commit is contained in:
Robert Yang 2018-09-29 20:37:22 -04:00 committed by Oliver Smith
parent 87384aace6
commit 9d198f1ea4
1 changed files with 25 additions and 0 deletions
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25
helpers/envkernel.sh
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@ -13,6 +13,30 @@ check_kernel_folder() {
}
clean_kernel_src_dir() {
if [ -f ".config" ] || [ -d "include/config" ]; then
echo "Source directory is not clean, running 'make mrproper'."
tmp_dir=""
if [ -d ".output" ]; then
echo " * Preserving existing build output."
tmp_dir=$(mktemp -d)
sudo mv ".output" "$tmp_dir"
fi;
# backslash is prefixed to disable the alias
# shellcheck disable=SC1001
\make mrproper
if [ ! -z "$tmp_dir" ]; then
sudo mv "$tmp_dir/.output" ".output"
sudo rmdir "$tmp_dir"
fi;
fi;
}
export_pmbootstrap_dir() {
# Get pmbootstrap dir based on this script's location
# See also: <https://stackoverflow.com/a/29835459>
@ -144,6 +168,7 @@ main() {
# Stop executing once a function fails
# shellcheck disable=SC1090
if check_kernel_folder \
&& clean_kernel_src_dir \
&& export_pmbootstrap_dir "$1" \
&& set_alias_pmbootstrap \
&& export_chroot_device_deviceinfo \