https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120438
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
from aclocal.m4 in lto-plugin:
AC_DEFUN([AM_AUTOMAKE_VERSION],
[am__api_version='1.15'
dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
dnl require some minimum version. Point them to the right macro.
m4_if([$1], [1.15.1], [],
[AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
])
The last time lto-plugin/configure changed was r14-4825-g6a6d3817afa02b .
