#! /bin/sh patch -p0 -l -f $* < $0 exit $? On some systems the gets macro has been removed and thus the test leads to an unresolved symbol error. --- srclib/stdio.in.h~ 2011-08-07 15:42:06.000000000 +0200 +++ srclib/stdio.in.h 2014-09-04 13:07:07.079024312 +0200 @@ -691,11 +691,6 @@ _GL_CXXALIAS_SYS (gets, char *, (char *s)); # undef gets # endif -_GL_CXXALIASWARN (gets); -/* It is very rare that the developer ever has full control of stdin, - so any use of gets warrants an unconditional warning. Assume it is - always declared, since it is required by C89. */ -_GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead"); #endif