Hello,
On Fri, Aug 26, 2005 at 01:37:56PM -0300, Carlos Eduardo Rodrigues Diogenes wrote:
> I'm sending you the entirely file atached. I put it in a clean an
> separated directory and execute the lines that are equivalent to
> autoreconf and get the same error.
well, first time I tried, I observed the same problem.
Then I upgraded pkg-config, to get new pkg.m4, which defines PKG_CHECK_EXISTS,
And the problem was solved.
The error message was misleading, sorry.
BTW: Carlos, when I told the AC_DEFINE parameter should be quoted, I meant
all the three instances, not only the first one. ;-)
Here are technical details, of any of the Autoconf developers have any idea
how this should be fixed. The problem was caused by this
PKG_CHECK_EXISTS(xinerama, [
AC_DEFINE([USE_XINERAMA], 1,
[Define to 1 to use XINERAMA in greeter & chooser])
PKG_CHECK_MODULES(XINERAMA, xinerama)
])
Because PKG_CHECK_EXISTS was not defined, the expansion was:
PKG_CHECK_EXISTS(xinerama,
AC_DEFINE([USE_XINERAMA], 1,
[Define to 1 to use XINERAMA in greeter & chooser])
PKG_CHECK_MODULES(XINERAMA, xinerama)
)
... ie. almost the same, only two quotes removed.
And this was written to configure. Autoconf saw three forbidden
tokens: PKG_CHECK_EXISTS AC_DEFINE PKG_CHECK_MODULES.
So it reported them as ``possibly undefined macros''.
For each of the symbols, autoconf found a line number (the first occurence)
and then sorted it according the line numbers:
configure.ac:39: error: possibly undefined macro: AC_DEFINE
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation.
configure.ac:150: error: possibly undefined macro: PKG_CHECK_EXISTS
configure.ac:153: error: possibly undefined macro: PKG_CHECK_MODULES
Line 39 is the first occurrence of AC_DEFINE, but that occurrence was
expanded. And PKG_CHECK_MODULES was also defined, it was only overquoted
here.
Since the forbidden token can be caused by overquoting, Autoconf should
not report it this way. I think it should report the symbols in the
order of appearance, at least. The line numbers should perhaps be omitted,
they are not reliable.
And perhaps there is a way to find out whether this symbol is defined or
not; that would enable different messages for "undefined" and "overquoted".
Anyone willing to fix this?
Have a nice day,
Stepan Kasal
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