https://sourceware.org/ml/libffi-discuss/2009/msg00289.html --- libgomp/configure.ac +++ libgomp/configure.ac @@ -110,6 +110,7 @@ m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) m4_define([_AC_ARG_VAR_PRECIOUS],[]) AC_PROG_CC +m4_undefine([_AC_ARG_VAR_PRECIOUS]) m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) AC_SUBST(CFLAGS)