Missing file build/m4_ax_check_compile_flag.m4
Since commit 989fc0fe there is a reference to a non-existing file called "build/m4_ax_check_compile_flag.m4" within acinclude.m4.
divert(-1)
builtin(include, build/mbdyn.m4)dnl
builtin(include, build/m4_ax_check_compile_flag.m4)dnl
builtin(include, build/m4_ax_pkg_swig.m4)dnl
builtin(include, build/m4_ax_python_devel.m4)dnl
builtin(include, build/m4_ax_swig_enable_cxx.m4)dnl
builtin(include, build/m4_ax_swig_multi_module_support.m4)dnl
builtin(include, build/m4_ax_swig_python.m4)dnl
dnl keep updated
builtin(include, build/ax_pthread.m4)dnl