On Tue, Oct 15, 2019 at 09:27:07PM +0000, Brooks Davis wrote: > Author: brooks > Date: Tue Oct 15 21:27:06 2019 > New Revision: 353597 > URL: https://svnweb.freebsd.org/changeset/base/353597 > > Log: > Add the ability to link programs against a compat ABI. > > Linkage is controlled by two make knobs: > WANT_COMPAT - Prefer to link against the compat ABI. > NEED_COMPAT - Link against the compat ABI or fail to build. > > Supported values are "32", "soft", and "any". The latter meaning pick > the first[0] supported compat ABI. > > This can be used to provide test binaries for compat ABIs or to link > ABI-specific programs. > > [0] We currently support only one compat ABI at a time, but this may > change in the future and some code in this commit is structured to ease > that change. > > Reviewed by: bdrewery, jhb > Obtained from: CheriBSD (in concept) > Sponsored by: DARPA, AFRL > Differential Revision: https://reviews.freebsd.org/D22023
This allows simple programs to build/link per the description. More work will be required to build programs that depend on things like MACHINE_ARCH, but this gets the basics working. -- Brooks
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