Hello, Patrik Olsson wrote: > When the "filevercmp" module is imported I get the following warnings > (several times) during autoreconf: > > configure.ac:33: warning: AC_COMPILE_IFELSE was called before > AC_USE_SYSTEM_EXTENSIONS > ../../lib/autoconf/specific.m4:310: AC_GNU_SOURCE is expanded from... > m4/gnulib-comp.m4:21: GNULIB_EARLY is expanded from... > configure.ac:33: the top level > configure.ac:33: warning: AC_RUN_IFELSE was called before > AC_USE_SYSTEM_EXTENSIONS > > What is wrong?
It means that GNULIB_EARLY - which adjusts the value of CPPFLAGS - is being called at a point where CPPFLAGS has already been used. This might lead to inconsistent configure results and therefore to errors or even miscompiled programs. > Perhaps I don't have GNULIB_EARLY and/or GNULIB_INIT in > the right place? Yes, GNULIB_EARLY is likely not at the right place. > My configure.ac and gnulib-cache.m4 are attached. I would try to move the two lines AC_PROG_CC GNULIB_EARLY up, line by line, until the warning disappears. Likely they need to be before LTDL_INIT. Possibly even before LT_INIT, I don't know. Bruno
