rather than substituting into src/Makefile.in.
#### Specify what sort of things we'll be editing into Makefile and config.h.
### Use configuration here uncanonicalized to avoid exceeding size limits.
]
-AC_SUBST(configuration)
AC_SUBST(version)
AC_SUBST(srcdir)
AC_SUBST(prefix)
AC_SUBST(machfile)
AC_SUBST(opsysfile)
+AC_DEFINE_UNQUOTED(CONFIGURATION, "\"${configuration}\"")
AC_DEFINE_UNQUOTED(config_machfile, "\"${machfile}\"")
AC_DEFINE_UNQUOTED(config_opsysfile, "\"${opsysfile}\"")
AC_DEFINE_UNQUOTED(LD_SWITCH_X_SITE, ${LD_SWITCH_X_SITE})