> Does the following work on your system (prereq-0.2-install)?

prereq-0.2-install seems to do the "right" thing - fail when g++ is
not working correctly and continue when g++ is working correctly.

> Also -- slightly off topic -- do you know how to check in autoconf
> that GCC >= 3.x is available?

This may be close to what you want:

AC_CACHE_CHECK([whether gcc is new enough],
   [tfs_cv_gcc_version],
   [AC_COMPILE_IFELSE(
     [AC_LANG_SOURCE(
       [
       @%:@if (__GNUC__ < 3)
       @%:@ error "doesn't work with gcc < 3.x."
       @%:@endif
      ])],
    [tfs_cv_gcc_version=yes],
    [tfs_cv_gcc_version=no])
    test x$tfs_cv_gcc_version != xyes && AC_MSG_ERROR(
    [please upgrade to gcc 3.x])
])

Kate Minola
University of Maryland, College Park


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