let's call this small program as test.c. There is no problem when executing the command gcc test.c, However, when executing as gcc test.c -D_POSIX_C_SOURCE=200112L, it reports SA_ONSTACK is not declared. _POSIX_C_SOURCE is enabled by default in the benchmark suite. If you guys think this flag is not necessary for us, then problem is solved.
2016-05-13 6:43 GMT-07:00 Christos Zoulas <chris...@zoulas.com>: > On May 12, 9:50pm, charles.cui1...@gmail.com (Charles Cui) wrote: > -- Subject: Re: refine of the GSOC project > > | Well, your saying of _NETBSD_SOURCE is defined by default seems correct, > | I compiled a file in the benchmark separately which has the problem of > | accessing > | macro SA_ONSTACK > | <http://nxr.netbsd.org/source/s?refs=SA_ONSTACK&project=src> which > lives > | in <signal.h>. There is no problem in executing. > | However, I am still not convinced why _NETBSD_SOURCE does not take effect > | in the benchmark execution? There is no #undef _NETBSD_SOURCE in the > | benchmark, > | also defining other macros will not affect _NETBSD_SOURCE (it will make > | multiple macros > | exist simultaneously). I am not quite clear why the default > _NETBSD_SOURCE > | does not > | work in the benchmark. > | > | this is from <signal.h>, benchmark using SA_ONSTACK reporting this macro > | not found. > | > > Why do you say that? Just compile and run this: > > #include <signal.h> > #include <stdio.h> > > int > main(void) > { > printf("%#x\n", SA_ONSTACK); > return 0; > } > > christos >
