# unconditionally pull-in librt with old glibc versions
AC_SEARCH_LIBS([clock_gettime], [rt], [], [])
+AC_ARG_WITH([libcap],
+ AS_HELP_STRING([--with-libcap=DIR], [Prefix for libcap]),
+ [CAP_LDFLAGS="-L$with_libcap/lib"],
+ [CAP_LDFLAGS=""])
save_LIBS="$LIBS"
LIBS=
+LDFLAGS="$LDFLAGS $CAP_LDFLAGS"
AC_SEARCH_LIBS([cap_init], [cap], [], [AC_MSG_ERROR([*** POSIX caps library not found])])
CAP_LIBS="$LIBS"
AC_SUBST(CAP_LIBS)
+AC_SUBST(CAP_LDFLAGS)
+LDFLAGS="$save_LDFLAGS"
AC_CHECK_FUNCS([memfd_create])
AC_CHECK_FUNCS([__secure_getenv secure_getenv])