From: Ken Brown <kbrown@cornell.edu>
To: cygwin@cygwin.com
Subject: Re: sys/cdefs.h or maybe gcc build issue
Date: Tue, 01 Nov 2016 19:42:00 -0000 [thread overview]
Message-ID: <6ecdfff0-9f53-9cd6-9934-6237c153ea7b@cornell.edu> (raw)
In-Reply-To: <57cbf5e2-f37b-ae50-f65c-dd6782481962@gmail.com>
On 10/30/2016 2:23 PM, cyg Simple wrote:
> The below sample code will give a warning that visibility isn't
> supported in this configuration. Either the GCC build is incorrect or
> the sys/cdefs.h needs to be modified to define __hidden to empty.
>
> /********************************************/
> #include <sys/cdefs.h>
> #include <stdio.h>
>
> __hidden void hello (char * str) {
> printf("%s %s\n", "Hello", str);
> }
>
> int main (int argc, char ** argv) {
> hello("cruel world!");
> }
> /********************************************/
If you're trying to write portable code, why would you assume that
__hidden is defined? It's not defined in glibc, for example, and your
sample program doesn't compile on Linux:
$ gcc test.c
test.c:4: error: expected â=â, â,â, â;â, âasmâ or â__attribute__â before
âvoidâ
Do you have a real use case where this issue came up? The sample isn't
very convincing as it stands.
Ken
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next prev parent reply other threads:[~2016-11-01 19:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-30 18:37 cyg Simple
2016-10-30 21:33 ` Brian Inglis
2016-10-31 11:05 ` cyg Simple
2016-11-01 19:42 ` Ken Brown [this message]
2016-11-02 2:29 ` cyg Simple
2016-11-08 15:17 ` Corinna Vinschen
2016-11-09 2:09 ` cyg Simple
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