3rd-party/linux-kernel-module-cheat
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build: only set Linux kernel cli config if options changed

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Otherwise, the Linux kernel gets rebuilt every time, which adds a few
seconds to every rebuild.
This commit is contained in:
Ciro Santilli
2018-06-10 09:29:23 +01:00
parent b562d8dfe7
commit c375d58e44
1 changed files with 12 additions and 3 deletions
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15
build
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@@ -7,8 +7,9 @@ br2_cli_file="${out_dir}/br2_cli"
rm -f "$br2_cli_file" rm -f "$br2_cli_file"
touch "$br2_cli_file" touch "$br2_cli_file"
kernel_config_fragment_cli_file="${out_dir}/kernel_config_fragment_cli" kernel_config_fragment_cli_file="${out_dir}/kernel_config_fragment_cli"
rm -f "$kernel_config_fragment_cli_file" kernel_config_fragment_cli_file_tmp="${kernel_config_fragment_cli_file}_tmp"
touch "$kernel_config_fragment_cli_file" rm -f "$kernel_config_fragment_cli_file_tmp"
touch "$kernel_config_fragment_cli_file_tmp"
configure=true configure=true
config_fragments="${root_dir}/br2/default" config_fragments="${root_dir}/br2/default"
extra_make_args= extra_make_args=
@@ -32,7 +33,7 @@ while getopts 'a:B:b:C:c:fGgj:hIiK:kL:lM:p:qSs:v' OPT; do
config_fragments="${config_fragments} $(common_abspath "${OPTARG}")" config_fragments="${config_fragments} $(common_abspath "${OPTARG}")"
;; ;;
C) C)
echo "$OPTARG" >> "$kernel_config_fragment_cli_file" echo "$OPTARG" >> "$kernel_config_fragment_cli_file_tmp"
;; ;;
c) c)
kernel_config_fragments="${kernel_config_fragments} $(common_abspath "${OPTARG}")" kernel_config_fragments="${kernel_config_fragments} $(common_abspath "${OPTARG}")"
@@ -125,8 +126,13 @@ case "$arch" in
esac esac
config_fragments="${config_fragments} ${root_dir}/br2/qemu ${br2_cli_file}" config_fragments="${config_fragments} ${root_dir}/br2/qemu ${br2_cli_file}"
time {
# Configure. # Configure.
if "$configure"; then if "$configure"; then
if ! cmp "${kernel_config_fragment_cli_file}" "${kernel_config_fragment_cli_file_tmp}"; then
# Only copy if modified, otherwise the kernel always rebuilds.
cp "${kernel_config_fragment_cli_file_tmp}" "${kernel_config_fragment_cli_file}"
fi
cd "${buildroot_dir}" cd "${buildroot_dir}"
for p in $(find "${root_dir}/buildroot_patches/" -maxdepth 1 -name '*.patch' -print); do for p in $(find "${root_dir}/buildroot_patches/" -maxdepth 1 -name '*.patch' -print); do
patch -N -r - -p 1 < "$p" || : patch -N -r - -p 1 < "$p" || :
@@ -171,6 +177,9 @@ BR2_ROOTFS_POST_SCRIPT_ARGS=\"${post_script_args}\"
fi fi
make O="$buildroot_out_dir" olddefconfig make O="$buildroot_out_dir" olddefconfig
fi fi
echo 'config time:'
}
echo
common_mkdir common_mkdir