On Fri, 6 Oct 2023, Zack Weinberg wrote:
This is currently not possible, but you are not the only person who has asked for it to be made possible, and it's on our near-future list. However, none of the core Autoconf developers currently have time to work on it. Might you be willing to put some time into it? I think something like this in configure.ac AC_C_STANDARD_VERSION([c89]) AC_PROG_CC
I have also wanted (and tried to) test code for c89 and c99 compliance (to test for an element of portabilty) , but was similarly foiled.
The suggested approach does not allow the user to optionally compile the code for a particular C version without editing configure.ac. The developer may prefer to use the Autoconf default.
Bob -- Bob Friesenhahn bfriesen@xxxxxxxxxxxxxxxxxxx, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ Public Key, http://www.simplesystems.org/users/bfriesen/public-key.txt