>> >> That requirement would rule out systems like RHEL 5, RHEL 6. > It is thus preferable to not require such version. On older versions of pkg-config (<0.24), the macro will not call AC_SUBST on generated variables <prefix>_LIBS and <prefix>_CFLAGS . Running it twice, though, will not cause problems. I will do that.
> Is this a requirement for build from git only, or a requirement for > build from theoretical distribution tarballs? > > I want the tarballs to build on old machines for sure. > Indeed Sébastien
