WARNING: ./configure: line 2862: C: command not found

[x42]

with GNU Autoconf 2.69 line 24 in configure.ac produces above warning.

AC_LANG_SOURCE([C])

I'm no expert on autoconf (who is?) - but this line should simply be removed. Why is it needed here? I know it in the context of checking source-code: e.g.

AC_LINK_IFELSE([AC_LANG_SOURCE([int main() { return 0; }])], [foo=yes], [foo=bar])

[erikd]

Yep, you are right. Fixed in d80bdf9.