build-sys: Really fix composefs check
authorColin Walters <walters@verbum.org>
Thu, 24 Aug 2023 23:48:22 +0000 (19:48 -0400)
committerColin Walters <walters@verbum.org>
Thu, 24 Aug 2023 23:58:20 +0000 (19:58 -0400)
commit3648c5ae29ce823592708cc1b9cca4f202d282a4
treeead6e72abca0a1f71c27dbcb56839a05594c81f6
parentdb3b286d6ba1252ad87c2524de632c1ad736fb6e
build-sys: Really fix composefs check

The ordering of the includes apparently matters...and I didn't
actually check that the previous change enables composefs on c9s.
But I did now.  For reals.

While we have the patient open, I switched to `AC_LANG_PROGRAM`
because I originally thought the bug had something to do with that.
As far as I understand, more cleanly separating the includes
from the injected body text is a useful thing in `AC_LANG_PROGRAM`.
configure.ac