On 22.12.2013 16:51, Ravi Shekhar Jethani wrote:
>
> Now, my real question :
> 1) I cannot understand the reason behind making function prototypes as
> extern. What purpose does this serve? AFAIK we put definition in a .c
> file and the prototype in a .h thats it.
>
> 2) Why are some prototypes
Stefan Beller writes:
> From my understanding there is no
> difference for functions declarations being set to extern or not,
> because extern is the default on functions.
There is a difference for shared libraries if you would like to control
which symbols are exported. With gcc, for example, y
2013/12/22 Jed Brown :
> There is a difference for shared libraries if you would like to control
> which symbols are exported. With gcc, for example, you might compile
> using -fvisibility=hidden. Any functions explicitly declared with
> extern, bearing __attribute__((visibility("default")), or u
Ravi Shekhar Jethani writes:
> To check this I installed the libgit2-dev package which installed:
> /usr/include/git2/*.h , /usr/lib/libgit2.so
> Now, I exported all symbols using:
> $ readelf -s /usr/lib/libgit2.so
> and tried to match these with 'externed' prototypes in the Git source
> director
4 matches
Mail list logo
