[oe] [SDK] meta-toolchain.bb generates very interesting environment-setup

[Denys Dmytriyenko]

On Thu, Mar 25, 2010 at 06:16:49PM +0300, Sergey Lapin wrote:
> $ cat /usr/local/angstrom/arm/environment-setup
> export SDK_PATH=/usr/local/angstrom/arm
> export TARGET_SYS=arm-angstrom-linux-gnueabi
> export PATH=$SDK_PATH/bin:$PATH
> export CPATH=$SDK_PATH/$TARGET_SYS/usr/include:$CPATH
> export LIBTOOL_SYSROOT_PATH=$SDK_PATH/$TARGET_SYS
> export PKG_CONFIG_SYSROOT_DIR=$SDK_PATH/$TARGET_SYS
> export PKG_CONFIG_PATH=$SDK_PATH/$TARGET_SYS/usr/lib/pkgconfig
> export CONFIG_SITE=$SDK_PATH/site-config
> alias opkg='LD_LIBRARY_PATH=/lib /bin/opkg-cl -f //etc/opkg-sdk.conf -o '
> alias opkg-target='LD_LIBRARY_PATH=/lib /bin/opkg-cl -f //etc/opkg.conf -o /'
> 
> A problem seems to be this code:
> 
> # Create environment setup script
>         script=${SDK_OUTPUT}/${SDKPATH}/environment-setup
>         touch $script
>         echo 'export SDK_PATH=${SDKPATH}' >> $script
>         echo 'export TARGET_SYS=${TARGET_SYS}' >> $script
>         echo 'export PATH=$SDK_PATH/bin:$PATH' >> $script
>         echo 'export CPATH=$SDK_PATH/$TARGET_SYS/usr/include:$CPATH' >> $script
>         echo 'export LIBTOOL_SYSROOT_PATH=$SDK_PATH/$TARGET_SYS' >> $script
>         echo 'export PKG_CONFIG_SYSROOT_DIR=$SDK_PATH/$TARGET_SYS' >> $script
>         echo 'export
> PKG_CONFIG_PATH=$SDK_PATH/$TARGET_SYS${libdir}/pkgconfig' >> $script
>         echo 'export CONFIG_SITE=$SDK_PATH/site-config' >> $script
>         echo "alias opkg='LD_LIBRARY_PATH=$SDK_PATH/lib
> $SDK_PATH/bin/opkg-cl -f $SDK_PATH/${sysconfdir}/opkg-s
> dk.conf -o $SDK_PATH'" >> $script
>         echo "alias opkg-target='LD_LIBRARY_PATH=$SDK_PATH/lib
> $SDK_PATH/bin/opkg-cl -f $SDK_PATH/$TARGET_SYS${
> sysconfdir}/opkg.conf -o $SDK_PATH/$TARGET_SYS'" >> $script
> 
> 
> it seems that $SDK_PATH in last two lines gets resolved instead of
> being written literally. adding \ before $ in these lines seems to fix
> this problem. Is it appropriate fix?

Ah, interesting... It worked for me when the last two lines had double quotes 
inside single quotes. But to match RP's styling, I had to revert that to 
single quotes inside double quotes and it doesn't seem to work:

$ echo 'show "$SDK_PATH"'
show "$SDK_PATH"

$ echo "show '$SDK_PATH'"
show ''

I wonder if it would be Ok to revert back to the original quoting... Or is 
escaping with \ a better fix?

> diff --git a/recipes/meta/meta-toolchain.bb b/recipes/meta/meta-toolchain.bb
> index 688995c..4f7ffda 100644
> --- a/recipes/meta/meta-toolchain.bb
> +++ b/recipes/meta/meta-toolchain.bb
> @@ -145,8 +145,8 @@ do_populate_sdk() {
>         echo 'export PKG_CONFIG_SYSROOT_DIR=$SDK_PATH/$TARGET_SYS' >> $script
>         echo 'export
> PKG_CONFIG_PATH=$SDK_PATH/$TARGET_SYS${libdir}/pkgconfig' >> $script
>         echo 'export CONFIG_SITE=$SDK_PATH/site-config' >> $script
> -       echo "alias opkg='LD_LIBRARY_PATH=$SDK_PATH/lib
> $SDK_PATH/bin/opkg-cl -f $SDK_PATH/${sysconfdir}/opkg-sd
> -       echo "alias opkg-target='LD_LIBRARY_PATH=$SDK_PATH/lib
> $SDK_PATH/bin/opkg-cl -f $SDK_PATH/$TARGET_SYS${s
> +       echo "alias opkg='LD_LIBRARY_PATH=\$SDK_PATH/lib
> \$SDK_PATH/bin/opkg-cl -f \$SDK_PATH/${sysconfdir}/opkg
> +       echo "alias opkg-target='LD_LIBRARY_PATH=\$SDK_PATH/lib
> \$SDK_PATH/bin/opkg-cl -f \$SDK_PATH/$TARGET_SYS
> 
>         # Add version information
>         versionfile=${SDK_OUTPUT}/${SDKPATH}/version
> 
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