Re: [openssl-dev] global OpenSSL symbols in user apps
In message <5772803f.3060...@openssl.org> on Tue, 28 Jun 2016 14:48:47 +0100, Matt Caswell said: matt> matt> matt> On 28/06/16 14:41, Richard Levitte wrote: matt> > Practically speaking, it depends. Provided we're talking about shared matt> > libraries, it's a definite "no" on Windows, VMS, Linux and Solaris matt> > (the list of Unix platforms are likely to expand) because the matt> > non-public symbols aren't made available. matt> matt> That's true in 1.1.0. I think they are available in 1.0.2/1.0.1 on Linux matt> and Solaris. Good point, thanks for the correction. Cheers, Richard -- Richard Levitte levi...@openssl.org OpenSSL Project http://www.openssl.org/~levitte/ -- openssl-dev mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-dev
Re: [openssl-dev] global OpenSSL symbols in user apps
On 28/06/16 14:41, Richard Levitte wrote: > In message > > on Tue, 28 Jun 2016 12:38:20 +, Catalin Vasile > said: > > cata.vasile> Hi, > cata.vasile> > cata.vasile> Is there a way to use global non-API functions or variables in > user apps? > cata.vasile> For example: Is there a way to use OpenSSL_armcap_P in your user > apps? I tried declaring it as "extern" variable, but at linking the linker > says it cannot find the symbol. > > Generally speaking: no. > > Practically speaking, it depends. Provided we're talking about shared > libraries, it's a definite "no" on Windows, VMS, Linux and Solaris > (the list of Unix platforms are likely to expand) because the > non-public symbols aren't made available. That's true in 1.1.0. I think they are available in 1.0.2/1.0.1 on Linux and Solaris. Matt > > If we're talking about static libraries, no symbols are hidden. > > I would *not* recommend fiddling with the non-public symbols. You may > be safe in one OpenSSL version, but you cannot know what's happening > with them in the next. > > Cheers, > Richard > -- openssl-dev mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-dev
Re: [openssl-dev] global OpenSSL symbols in user apps
In message on Tue, 28 Jun 2016 12:38:20 +, Catalin Vasile said: cata.vasile> Hi, cata.vasile> cata.vasile> Is there a way to use global non-API functions or variables in user apps? cata.vasile> For example: Is there a way to use OpenSSL_armcap_P in your user apps? I tried declaring it as "extern" variable, but at linking the linker says it cannot find the symbol. Generally speaking: no. Practically speaking, it depends. Provided we're talking about shared libraries, it's a definite "no" on Windows, VMS, Linux and Solaris (the list of Unix platforms are likely to expand) because the non-public symbols aren't made available. If we're talking about static libraries, no symbols are hidden. I would *not* recommend fiddling with the non-public symbols. You may be safe in one OpenSSL version, but you cannot know what's happening with them in the next. Cheers, Richard -- Richard Levitte levi...@openssl.org OpenSSL Project http://www.openssl.org/~levitte/ -- openssl-dev mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-dev
