Re: [PATCH 1.5] testsuite failures: missing AM_PROG_CC_C_O

[Alexandre Duret-Lutz]

>>> "Ralf" == Ralf Wildenhues <address@hidden> writes:

[...]

 Ralf> Now what happens?  Will `compile' be used? [*]

It depends where per-targets flags have been added: compile was
used with your previous patch, it is not with the new one.

 Ralf> Because then, since the file will be compiled in two different ways (one
 Ralf> with Libtool and one without), AND since `compile' and `libtool' have
 Ralf> different locking schemes, there is a potential for silent breakage in
 Ralf> parallel builds, iff the compiler does not understand -c -o.

Presently when compile is used, it is hardcoded into CC, so it
is also used with libtool.

[...]

 Ralf> [*] A quick test showed that in the demo/ example, `compile' will not be
 Ralf> used, even if ac_cv_compiler_c_o=no, because some macro overwrites CC
 Ralf> within the configure run (and does not reset it).  Seems broken to me.

So it seems to me, although I'm not sure what your test is,
and AFAICT this is not the variable used by A[CM]_PROG_CC_C_O.
-- 
Alexandre Duret-Lutz