warning: The macro `AC_LANG_C' is obsolete.

[Marc Gonzalez]

Hello,

I'm an autotools noob, so I'm not sure how to fix this warning:

$ autoconf
configure.ac:63: warning: The macro `AC_LANG_C' is obsolete.
configure.ac:63: You should run autoupdate.
./lib/autoconf/c.m4:72: AC_LANG_C is expanded from...
m4/ax_pthread.m4:81: AX_PTHREAD is expanded from...
configure.ac:63: the top level
configure.ac:63: warning: The macro `AC_TRY_LINK' is obsolete.
configure.ac:63: You should run autoupdate.
./lib/autoconf/general.m4:2920: AC_TRY_LINK is expanded from...
m4/ax_pthread.m4:81: AX_PTHREAD is expanded from...
configure.ac:63: the top level


NB: I get the same warning if I run `autoreconf` which is supposed
to invoke all the appropriate autotools...

Might be an issue on my system exclusively?

Regards

[Mike Frysinger]

m4/ax_* macros are copied from upstream:

https://www.gnu.org/software/autoconf-archive/

you can see if pulling in newer versions from the latest release fixes things

-mike