[PATCH] scripts/oe-setup-builddir: do not read TEMPLATECONF from templateconf.cfg

[PATCH] scripts/oe-setup-builddir: do not read TEMPLATECONF from templateconf.cfg

[Alexander Kanavin]

Also, write to it only if it does not already exist.

As discussed here[1], reading from templateconf.cfg serves no purpose:
it exists only if the build directory has already been initialized, and so
the scripts will not change anything in the build directory anyway.

My adjustment is to keep the file however; it is useful as a pointer
to the original template, which can be utilized by config management
tools in the future.

[1] https://lists.openembedded.org/g/openembedded-architecture/topic/template_handling_in_oe_core/93968540

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
---
 scripts/oe-setup-builddir | 14 +++-----------
 1 file changed, 3 insertions(+), 11 deletions(-)

diff --git a/scripts/oe-setup-builddir b/scripts/oe-setup-builddir
index e3c8c6d437..3a91bbf5b1 100755
--- a/scripts/oe-setup-builddir
+++ b/scripts/oe-setup-builddir
@@ -34,16 +34,6 @@ chmod -st "$BUILDDIR/conf" 2>/dev/null || echo "WARNING: unable to chmod $BUILDD
 
 cd "$BUILDDIR" || die "Failed to change directory to $BUILDDIR!"
 
-if [ -z "$TEMPLATECONF" ] && [ -f "$BUILDDIR/conf/templateconf.cfg" ]; then
-    TEMPLATECONF=$(cat "$BUILDDIR/conf/templateconf.cfg")
-    # The following two are no longer valid; unsetting them will automatically get them replaced
-    # with correct ones.
-    if [ "$TEMPLATECONF" = meta/conf ] || [ "$TEMPLATECONF" = meta-poky/conf ]; then
-        unset TEMPLATECONF
-        rm "$BUILDDIR/conf/templateconf.cfg"
-    fi
-fi
-
 . "$OEROOT/.templateconf"
 
 # Keep the original TEMPLATECONF before possibly prefixing it with $OEROOT below.
@@ -132,4 +122,6 @@ fi
 [ ! -r "$OECORENOTESCONF" ] || cat "$OECORENOTESCONF"
 unset OECORENOTESCONF
 
-echo "$ORG_TEMPLATECONF" >"$BUILDDIR/conf/templateconf.cfg"
+if [ ! -f "$BUILDDIR/conf/templateconf.cfg" ]; then
+  echo "$ORG_TEMPLATECONF" >"$BUILDDIR/conf/templateconf.cfg"
+fi
-- 
2.30.2

RE: [OE-core] [PATCH] scripts/oe-setup-builddir: do not read TEMPLATECONF from templateconf.cfg

[Peter Kjellerstedt]

> -----Original Message-----
> From: openembedded-core@lists.openembedded.org <openembedded-core@lists.openembedded.org> On Behalf Of Alexander Kanavin
> Sent: den 28 september 2022 23:19
> To: openembedded-core@lists.openembedded.org
> Cc: Alexander Kanavin <alex@linutronix.de>
> Subject: [OE-core] [PATCH] scripts/oe-setup-builddir: do not read TEMPLATECONF from templateconf.cfg
> 
> Also, write to it only if it does not already exist.
> 
> As discussed here[1], reading from templateconf.cfg serves no purpose:
> it exists only if the build directory has already been initialized, and so
> the scripts will not change anything in the build directory anyway.
> 
> My adjustment is to keep the file however; it is useful as a pointer
> to the original template, which can be utilized by config management
> tools in the future.
> 
> [1] https://lists.openembedded.org/g/openembedded-architecture/topic/template_handling_in_oe_core/93968540
> 
> Signed-off-by: Alexander Kanavin <alex@linutronix.de>
> ---
>  scripts/oe-setup-builddir | 14 +++-----------
>  1 file changed, 3 insertions(+), 11 deletions(-)
> 
> diff --git a/scripts/oe-setup-builddir b/scripts/oe-setup-builddir
> index e3c8c6d437..3a91bbf5b1 100755
> --- a/scripts/oe-setup-builddir
> +++ b/scripts/oe-setup-builddir
> @@ -34,16 +34,6 @@ chmod -st "$BUILDDIR/conf" 2>/dev/null || echo
> "WARNING: unable to chmod $BUILDD
> 
>  cd "$BUILDDIR" || die "Failed to change directory to $BUILDDIR!"
> 
> -if [ -z "$TEMPLATECONF" ] && [ -f "$BUILDDIR/conf/templateconf.cfg" ]; then
> -    TEMPLATECONF=$(cat "$BUILDDIR/conf/templateconf.cfg")
> -    # The following two are no longer valid; unsetting them will automatically get them replaced
> -    # with correct ones.
> -    if [ "$TEMPLATECONF" = meta/conf ] || [ "$TEMPLATECONF" = meta-poky/conf ]; then
> -        unset TEMPLATECONF
> -        rm "$BUILDDIR/conf/templateconf.cfg"
> -    fi
> -fi
> -
>  . "$OEROOT/.templateconf"
> 
>  # Keep the original TEMPLATECONF before possibly prefixing it with
> $OEROOT below.
> @@ -132,4 +122,6 @@ fi
>  [ ! -r "$OECORENOTESCONF" ] || cat "$OECORENOTESCONF"
>  unset OECORENOTESCONF
> 
> -echo "$ORG_TEMPLATECONF" >"$BUILDDIR/conf/templateconf.cfg"
> +if [ ! -f "$BUILDDIR/conf/templateconf.cfg" ]; then
> +  echo "$ORG_TEMPLATECONF" >"$BUILDDIR/conf/templateconf.cfg"

The rest of the file uses four spaces for indentation.
RP: I saw you have this in master-next already so I guess it's easiest 
for you to fix it there.

> +fi
> --
> 2.30.2

//Peter