[U-Boot] [PATCH] script: Make the get_default_envs.sh script working with newest u-boot

[Tuomas Tynkkynen <tuomas@tuxera.com>]

On Wed, 14 Feb 2018 09:50:17 +0100
Lukasz Majewski <lukma@denx.de> wrote:

> On Wed, 14 Feb 2018 03:25:58 +0200
> Tuomas Tynkkynen <tuomas@tuxera.com> wrote:
> 
> > Hi,
> > 
> > On Tue, 13 Feb 2018 23:01:13 +0100
> > Lukasz Majewski <lukma@denx.de> wrote:
> > 
> > > This commit fixes several issues:
> > > 
> > > - After moving env related code to ./env directory the env_common.o
> > > file is no longer present in the system (has been replaced with
> > > built-in.o).
> > > 
> > > - Use ${OBJCOPY} if available, fallback to system default's objcopy
> > > if not present.
> > > 
> > > - Extend the script to accept different build directory than
> > > current one. It is extremely handy with OE usage, where source code
> > > is separated from build.
> > > 
> > > Signed-off-by: Lukasz Majewski <lukma@denx.de>
> > > ---
> > > 
> > >  scripts/get_default_envs.sh | 19 ++++++++++++++-----
> > >  1 file changed, 14 insertions(+), 5 deletions(-)
> > > 
> > > diff --git a/scripts/get_default_envs.sh
> > > b/scripts/get_default_envs.sh index 7955db60e5..bbb6d0a6ef 100755
> > > --- a/scripts/get_default_envs.sh
> > > +++ b/scripts/get_default_envs.sh
> > > @@ -6,16 +6,24 @@
> > >  #
> > >  
> > >  # This file extracts default envs from built u-boot
> > > -# usage: get_default_envs.sh > u-boot-env-default.txt
> > > +# usage: get_default_envs.sh [build dir] > u-boot-env-default.txt
> > >  set -ue
> > >  
> > > -ENV_OBJ_FILE="env_common.o"
> > > +: "${OBJCOPY:=objcopy}"  
> > 
> > Maybe "${CROSS_COMPILE}objcopy" would be a better default as that's
> > what the build system uses.
> 
> Unfortunately not with OE builds. In OE, the OBJCOPY is set to arm
> specific objcopy.
> 
> With fallback (objcopy) from your local machine - it depends if it
> supports multi arch or not.

No, I meant that instead of having a fallback of "objcopy", have a 
fallback of "${CROSS_COMPILE}objcopy". I.e. squashing this change:

diff --git a/scripts/get_default_envs.sh b/scripts/get_default_envs.sh
index 3e532d12c4..184cc19ab7 100755
--- a/scripts/get_default_envs.sh
+++ b/scripts/get_default_envs.sh
@@ -9,7 +9,7 @@
 # usage: get_default_envs.sh [build dir] > u-boot-env-default.txt
 set -ue
 
-: "${OBJCOPY:=objcopy}"
+: "${OBJCOPY:=${CROSS_COMPILE:-}objcopy}"
 
 ENV_OBJ_FILE="built-in.o"
 ENV_OBJ_FILE_COPY="copy_${ENV_OBJ_FILE}"

That way the script works out-of-the-box for people who do the usual

export CROSS_COMPILE=aarch64-linux-gnu- (or whatever)

when building U-Boot.