Hi, On 2018-11-17 23:32:47 -0500, Tom Lane wrote: > We've seen repeated complaints about bogus build warnings when using > "clang": it complains that strlcpy and some related library functions > haven't been declared. Several of the buildfarm animals exhibit such > warnings, for instance. That's because Autoconf's AC_CHECK_DECLS macro > fails to cope with the fact that clang only generates a warning, not > an error, for the test case that that macro uses. Noah fixed this > in upstream autoconf several years ago: > > http://git.savannah.gnu.org/cgit/autoconf.git/commit/?id=82ef7805faffa151e724aa76c245ec590d174580 > > However, I'm beginning to despair of the Autoconf crowd ever putting > out an official new release. Hence, I propose to apply and back-patch > the attached, which essentially just imports Noah's fix into our > configure script. I've verified that this does the right thing with > Fedora 28's version of clang (clang version 6.0.1).
Seems like a good plan. The problem doesn't reproduce for me on debian (using any version of clang), so all I can report is that at patched build still works as it should. - Andres
