Hello!
When I tried to compile glibc-2.6.1 (with NPTL support) with CFLAGS
including ‘-Wstrict-prototypes’, I noticed that a configure test failed
which should have succeeded. I could track the problem down to
AC_LANG_PROGRAM(C) in c.m4 from autoconf:
AC_LANG_PROGRAM(C) uses a ‘main’ function without a prototype. If CFLAGS
contains ‘-Werror’ (it does in my case, because the configure script in
the glibc package adds it), a test using AC_LANG_PROGRAM(C), for example
AC_LINK_IFELSE, fails.
Shouldn’t the line
main ()
be
main (void)
instead? Or may this cause problems with some compilers? Should
‘-Wstrict-prototypes’ be removed from CFLAGS instead? And should this be
fixed in autoconf or should I report a bug against glibc?
I examined autoconf-2.61; the problem may be present in other versions
as well.
Thanks
--
Nico
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