diff options
| author | Simon Glass <sjg@chromium.org> | 2021-09-22 20:34:44 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-10-19 18:23:07 +0300 |
| commit | 93b196532254366f653b4d763f69e49ff193f06c (patch) | |
| tree | f0768d3161c33bd110bd30359517b2ed9fec429d /scripts/dtc-version.sh | |
| parent | d7faa082a57eeeff9b4bbcc45d3dfed747d99a70 (diff) | |
| download | u-boot-93b196532254366f653b4d763f69e49ff193f06c.tar.xz | |
Makefile: Only build dtc if needed
At present U-Boot always builds dtc if CONFIG_OF_CONTROL is defined, even
when DTC is provided. The built dtc is not actually used, so this is a
waste of time.
Update the Makefile logic to build dtc only if one is not provided to the
build with the DTC variable. Add documentation to explain this.
This saves about 3.5 seconds of elapsed time on a clean build of
sandbox_spl for me.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'scripts/dtc-version.sh')
| -rwxr-xr-x | scripts/dtc-version.sh | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/scripts/dtc-version.sh b/scripts/dtc-version.sh index bd4e818e92..bfb514e179 100755 --- a/scripts/dtc-version.sh +++ b/scripts/dtc-version.sh @@ -10,11 +10,16 @@ dtc="$*" if [ ${#dtc} -eq 0 ]; then - echo "Error: No dtc command specified." + echo "Error: No dtc command specified" printf "Usage:\n\t$0 <dtc-command>\n" exit 1 fi +if ! which $dtc >/dev/null ; then + echo "Error: Cannot find dtc: $dtc" + exit 1 +fi + MAJOR=$($dtc -v | head -1 | awk '{print $NF}' | cut -d . -f 1) MINOR=$($dtc -v | head -1 | awk '{print $NF}' | cut -d . -f 2) PATCH=$($dtc -v | head -1 | awk '{print $NF}' | cut -d . -f 3 | cut -d - -f 1) |