Re: using -l in gcc
On Mon, 13 Oct 1997, Shaleh wrote:
> How do I make a library available to gcc -l i.e. gcc -lX11 or gcc
> -lmy_own_lib? Same question applies to -i as well I suppose.
If you only want it to happen for one command you can use the -I (that's a
capital "i") and -L switches; for example, if your libraries are in
/home/shaleh/lib and you headers in /home/shaleh/include:
gcc -L/home/shaleh/lib/ -I/home/shaleh/lib -lmy_own_lib -o foo foo.c
(note that the second option is a capital "i"; the third option is a
But what if you want to use this on more than just one command? The
easiest way to do so is with environment variables; from the gcc info
The value of `LIBRARY_PATH' is a colon-separated list of
directories, much like `PATH'. GNU CC tries the directories thus
specified when searching for special linker files, if it can't
find them using `GCC_EXEC_PREFIX'. Linking using GNU CC also uses
these directories when searching for ordinary libraries for the
`-l' option (but directories specified with `-L' come first).
These environment variables pertain to particular languages. Each
variable's value is a colon-separated list of directories, much
like `PATH'. When GNU CC searches for header files, it tries the
directories listed in the variable for the language you are using,
after the directories specified with `-I' but before the standard
header file directories.
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