Re: [ft-devel] [freetype-2.9.1] FT_Init_FreeType is missing with cc on Solaris x64

[suzuki toshiya]

> Thus, attribute visibility is only enabled for GCC >= 4.

So, challenging option is that enabling attribute-visibility-default
for Oracle cc. Distinction between "on Solaris" and "by Oracle CC"
is slightly complicated, but I could find something in here:

https://docs.oracle.com/cd/E19205-01/820-1209/bjaii/index.html
https://stackoverflow.com/questions/37715467/how-to-print-preprocessor-macros-under-sun-studio

Maybe "__SUNPRO_C" could be used as the indicator.

Regards,
mpsuzuki

suzuki toshiya wrote:
> Dear Alexei,
> 
>>> Does it define __GNUC__? Does it undestand __attribute__(( visibility(
>>> "default" ) ))?
>> Q1) __GNUC__
>> Maybe No.
> 
> Oh, Oh. I found my misunderstanding.
> 
> ftconfig.h does like this:
> 
> #if defined( _WIN32 ) && ( defined( _DLL ) || defined( DLL_EXPORT ) )
> #define FT_EXPORT( x )  __declspec( dllexport )  x
> #elif defined( __GNUC__ ) && __GNUC__ >= 4
> #define FT_EXPORT( x )  __attribute__(( visibility( "default" ) ))  x
> #elif defined( __cplusplus )
> #define FT_EXPORT( x )  extern "C"  x
> #else
> #define FT_EXPORT( x )  extern  x
> #endif
> 
> Thus, attribute visibility is only enabled for GCC >= 4.
> 
> Comparing with configure.raw, I guess you assumed that
> -fvisibility is GCC-specific feature?
> 
> # I should remind, such kind of linker-related technologies
> # in GNU toolchains are heavily inspired by Solaris, maybe
> # in Drepper's era.
> 
> 
> suzuki toshiya wrote:
>> Alexei Podtelezhnikov wrote:
>>> On Thu, May 3, 2018 at 8:31 AM, suzuki toshiya
>>> <address@hidden> wrote:
>>>> Dear Kanazawa-san,
>>>>
>>>> Hmm, it looks good... why Oracle cc hides all symbols...?
>>>>
>>> because it accepts -fvisibility=hidden, wh ich is a GNUC. Now two questions:
>>> Does it define __GNUC__? Does it undestand __attribute__(( visibility(
>>> "default" ) ))?
>> Q1) __GNUC__
>> Maybe No.
>>
>> Q2) __attribute__((visibility(xxx))
>> Yes, according to the online help.
>> https://docs.oracle.com/cd/E18659_01/html/821-1384/gjzke.html
>>
>> Regards,
>> mpsuzuki
>>
>