Environment variable equivalent of -L

Environment variable equivalent of -L

[Ian Pilcher]

I am using GCC as a cross compiler, which results in some crazy long
command lines, because of all the directories that need to be passed
with the -I and -L options.

I've found the CPATH variable, for include file paths (-I equivalent),
but I haven't found anything that works like -L.  I tried LIBRARY_PATH,
but that didn't work.

Am I missing something, or is there just no such variable?

Thanks!

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Re: Environment variable equivalent of -L

[Segher Boessenkool]

On Mon, Mar 28, 2022 at 09:04:53AM -0500, Ian Pilcher via Gcc-help wrote:
> I am using GCC as a cross compiler, which results in some crazy long
> command lines, because of all the directories that need to be passed
> with the -I and -L options.
> 
> I've found the CPATH variable, for include file paths (-I equivalent),
> but I haven't found anything that works like -L.  I tried LIBRARY_PATH,
> but that didn't work.
> 
> Am I missing something, or is there just no such variable?

You could use what in DOS was called a response file:
'@FILE'
     Read command-line options from FILE.  The options read are inserted
     in place of the original @FILE option.  If FILE does not exist, or
     cannot be read, then the option will be treated literally, and not
     removed.


Segher

Re: Environment variable equivalent of -L

[Ian Pilcher]

On 3/28/22 09:35, Segher Boessenkool wrote:
> You could use what in DOS was called a response file:
> '@FILE'
>       Read command-line options from FILE.  The options read are inserted
>       in place of the original @FILE option.  If FILE does not exist, or
>       cannot be read, then the option will be treated literally, and not
>       removed.

I could also add the paths that I need to a variable of my own invention
and pass that on the command line, e.g.:

   $ mips-openwrt-linux-musl-gcc ... -L${MY_LIB_PATHS} ...

I just seems a bit weird that GCC honors CPATH and friends for header
file locations, but there doesn't seem to be any equivalent for library
paths.

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Google                                      Where SkyNet meets Idiocracy
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