A patch in oe-core is needed, at this time, to fix builds with
linux-libc-headers from the 4.8 Linux kernel or newer, which is not the case
for most external toolchains. Unfortunately, this patch also breaks the build
of ppp with older linux-libc-headers, so we need to revert it. A note in the
README is added explaining how to disable this for external toolchains with
recent enough kernel libc headers.
Signed-off-by: Christopher Larson <chris_larson@mentor.com>
This phrase implies knowledge of the build process or the layer history which
is not always the case.
Signed-off-by: Christopher Larson <chris_larson@mentor.com>
common-license.bbclass will set LIC_FILES_CHKSUM to a common license file
based on LICENSE, which is appropriate for a case where we have no sources to
refer to.
external-toolchain.bbclass, among other things, handles extraction of files in
the external toolchain sysroot, based on patterns in the FILES variables,
checking alternate locations to better support any arbitrary toolchain, and
has basic mirror handling for checking multiple paths within the sysroots.
Under normal circumstances, I'd want this to use highly granular commits, but
this branch has been extremely long lived (>1yr) and is such an invasive
refactoring that attempting to break it down now would be of limited
usefulness.
Signed-off-by: Christopher Larson <chris_larson@mentor.com>
This information should be informative, covering exactly what the layer.conf and tcmode file are doing. In addition, it should address concerns about configuration migration from old versions of oe-core, without explicitly instructing the user in steps they may not need to perform.
This also adds instructions on the use of `external-sourcery-rebuild-libc`.
