When using autoconf 2.71 to run our configure script, the following warning is printed:

Using autoconf at /usr/local/bin/autoconf [autoconf (GNU Autoconf) 2.71]
stdin:227: warning: AC_CHECK_HEADERS($HEADERS_TO_CHECK): you should use literals
./lib/autoconf/headers.m4:217: AC_CHECK_HEADERS is expanded from...
/Users/ihse/git/jdk-ALT/open/make/autoconf/libraries.m4:93: LIB_SETUP_LIBRARIES is expanded from...
stdin:227: the top level

This comes from the "syntax" category of warnings. One solution is to change "-W all" in the call to autoconf to not include the syntax category to silence the warning. There seem to be no other way to suppress a single warning instance.

The code itself is benign and correct, so it seems a tad stupid to have to change it to silence the warning.