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  #1  
Old November 19th, 2012, 12:03 AM
shilpac shilpac is offline
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Libraries
I was studying about shared and static libraries today and was looking into /usr/lib folder. I found libc.a and libc.so in /usr/lib folder.

Can anyone explain which library is exactly used and why there is both ?
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Old November 19th, 2012, 03:00 AM
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libc.a is the static C library and libc.so is the shared version of the same library.
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Old November 20th, 2012, 12:59 AM
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Quote:
Originally Posted by Scorpions4ever
libc.a is the static C library and libc.so is the shared version of the same library.


Yes. But which library will be used , whether static or shared ?
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Old November 20th, 2012, 02:18 AM
Lux Perpetua Lux Perpetua is offline
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Normally the shared ones (when they exist), but you can opt to link statically. The exact syntax will depend on the linker, but on a GNU system:
Code:
$ gcc myprog.c    -o myprog               # link against shared objects
$ gcc myprog.c    -o myprog    -static    # link statically
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