chore(linux): Update autotools configuration

This fixes some deprecation warnings:
- "The macro `AC_GNU_SOURCE' is obsolete"
- "The macro `AM_DISABLE_STATIC' is obsolete"
- "The macro `AC_ISC_POSIX' is obsolete"
- "The macro `AC_HEADER_STDC' is obsolete"
- "The macro `AM_PROG_LIBTOOL' is obsolete"