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New Developer
Posts: 2
Registered: ‎10-25-2010
My Device: Not Specified
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What are the Library files with "S"?

[ Edited ]

Hi there,

I've been adding command line PlayBook targeting to my build system, and I stumbled across something I'm curious about.

Inside the lib folders, there are your typical library files like libGLES_CM.a, libGLESv2.a, their .so versions, and so on. However, there are variants of these files with S's in the names: libGLES_CMS.a, libGLESv1_CMS.a, libGLESv2S.a, libEGLS.a, and so on.

What is the S?

I suspected the S might have meant Static, but looking at the file sizes, the S library files are no more than 1-2k larger. Alternatively it could mean Symbols, but I'm not entirely sold on that either. I suppose I could run objdump or nm to find out, but hey, I'm here, so lets ask.

Thanks,
- Mike Kasprzak

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Retired
Posts: 45
Registered: ‎10-25-2010
My Device: Bold 9700
My Carrier: Rogers

Re: What are the Library files with "S"?

These are archives containing position-independent (PIC) code.  They are suitable for statically linking content into your own shared libraries, which regular .a files wouldn't be because they aren't PIC.

 

So, for a given library, you can have the same code packaged three ways for different purposes in

 

  - libxyz.so - dynamically linked at run-time

  - libxyzS.a - statically linked into a PIC binary such as a shared library

  - libxyz.a - statically linked into another archive or an executable program

 

HTH,

 

Christian

New Developer
Posts: 48
Registered: ‎08-06-2012
My Device: Blacberry 10 Dev Alpha
My Carrier: Blackberry

Re: What are the Library files with "S"?

Thanks for goog knowledge

Developer
Posts: 368
Registered: ‎06-30-2012
My Device: Playbook, Z10LE, DevAlpha C
My Carrier: Telenor, Mobitel

Re: What are the Library files with "S"?

[ Edited ]

Ravi-4u pls pay attention to date of threads in which you are writing posts. You bring alive old dead post, and that causes them to pop alive without new knowledge at all.

Also, you are registered on Monday, and have already 30+ posts, slow down friend, this is no race Smiley Very Happy