[OE-core] [PATCH v2 2/2] automake: Adjust shebang lines to remove interpreter path hardcode

[Richard Purdie]

On Tue, 2017-03-28 at 19:25 +0000, Serhii Popovych wrote:
> If build host perl (and other tools) is old and we use some kind
> of toolchain to provide recent perl/python/etc to the OE build
> we still locked to use build host perl due to hardcoded shebang
> lines in automake scripts.
> 
> Behaviour was observed with Enterprise Linux 6 and devtoolset
> toolchain from SCL (Software Collections) used to provide recent
> version of perl (not provided with default buildtools-tarball).
> 
> Pass /usr/bin/env perl in ac_cv_path_PERL configuration variables
> for class-native and class-nativesdk. Use patch to automake to
> replace
> -w option in shebang line with modern way to enable warnings on perl
> (i.e. "use warnings").
> 
> Note that ac_cv_path_PERL must be valid perl interpreter path
> since configure will check perl version and Flock implementation.
> It is not possible currently to use nativeperl from native
> sysroot because automake does not DEPENDS on perl-native (and
> doing so fails due to circular dependencies). Only possible
> solution is to overwrite shebangs with nativeperl somewhere at
> do_install() and update RDEPENDS for class-native. Or add perl
> symlinks to nativeperl in sysroot.
> 
> For now it seems good to use perl found by /usr/bin/env from
> automake-native.
> 
> Also add RDEPENDS for class-nativesdk and add nativesdk-perl to
> them.
> 
> v2: Corrected Upstream-Status tag.
> 
> Cc: XE-Linux <xe-linux-external at cisco.com>
> Signed-off-by: Serhii Popovych <spopovyc at cisco.com>

Again, the patch description and what it actually does don't match
(RDEPENDS)...

Cheers,

Richard