Comments on auto* macros

[Brian Gough]

Hans Ekkehard Plesser writes:
 > But I must admit that (as an auto* layman), I am still quite confused
 > after reading these pages.  E.g., I just spent some half hour to find
 > out that the AM_PATH_GSL test has to come before the AC_LANG_CPLUSPLUS
 > switch, because the c++ compiler otherwise complains about an implicit
 > cast in line 74 of gsl.m4.  The same seems to hold for the inline
 > tests.  Is this ordering of tests absolutely trivial for anyone
 > experienced with autoconf?  If not, could you include a hint in the
 > documentation?

I think the macros had only been used with a C compiler not C++, so
that problem hadn't been encountered before.  I'll add that to the
documentation.

regards
Brian Gough