Mail Archives: cygwin-apps/2001/03/15/04:56:05
----- Original Message -----
From: "Akim Demaille" <akim AT epita DOT fr>
> >>>>> "Robert" == Robert Collins <robert DOT collins AT itdomain DOT com DOT au>
> Robert> It looks like the cc result is not used from cache - so I
> Robert> don't think this test should allow caching. Also I have a
> Robert> question on the caching: I need to cache _the change needed to
> Robert> CC_... Is that temporary variable automatically cached?
> If you ac_cv_ it, yes. But never display a cache variable to the
> You macro, indeed, is fragile to the changes of LANG. I'm not sure
> echo $ac_compile
> will display what you hope it would. And actually, now that coffee
> suddenly breaks my mind free, I just understood you meant to do here:
> ac_compile="$ac_compile -mwin32"
> ac_link="$ac_link -mwin32"
> CC="$CC -mwin32"
> this is `wrong'. ac_compile and friends are not evaluated at their
> definition, but at their uses. So you need not (and must not) change
> them at all. Changing CC is a bad idea. And BTW, my suggestion
> behind the C++ stuff was that, IMHO, you should not set CC, or maybe
> at least provide the user with a means to get the switch, say the
> variable $WIN32CFLAGS.
Ah, Well I answered a different question then :]
> AC_LANG_COMPILER_MWIN32([YES-WIN32], [NOT-WIN32])
> I would be able to write
> AC_LANG_COMPILER_MWIN32([CC="$CC $WIN32CFLAGS])
> CXX="$CXX $WIN32CFLAGS"
Ok problem here: that might not be valid for CXX. AFAIK it happens to be
on cygwin, but I can't vouch for other scenarios (WINE comes to mind
again). For that reason I suggest a separate test for each language.
I've copied from your next email to prevent us having 20 concurrent
> Then it seems to me that the interface is not right. Maybe something
Good suggestion. Then the developer can simply check for HAVE_WINDOWS_H
afterwards.. I like :]
What about the language specific issues? Or should AC_HEADER_WINDOWS
look for _every_ compiler that it knows how to set WIN32 on?
> which would do the whole thing might be what you need. Also, why do
> you set CC and not CFLAGS (and maybe LDFLAGS)? This is a tricky
> question, I often wondered, not only in the present case.
Because I misunderstood the ac_* variable vs the CAPITALISED ONES.
Does this mean I get to set CC again?
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