[fpc-devel] Cross-compiling and warnings from linker

Jonas Maebe jonas at freepascal.org
Fri Nov 12 15:11:55 CET 2021

On 2021-11-12 10:20, Pierre Muller via fpc-devel wrote:
> Le 10/11/2021 à 21:19, Sergey Organov via fpc-devel a écrit :
>> Hello,
>> Using cross-compiler from x86-linux to arm-linux, I keep getting a lot
>> of warnings at the linking stage of my programs, in the form:
>> /opt/[...]/arm-linux-gnueabihf-ld: warning: library search path 
>> "/usr/lib/eject/" is unsafe for cross-compilation
>> /opt/[...]/arm-linux-gnueabihf-ld: warning: warning: library search 
>> path "/usr/lib/console-setup/" is unsafe for cross-compilation
>> [...]
>> for virtually every sub-directory in /usr/lib. FPC 3.2.0 and 3.2.2 
>> both
>> have this issue.
>> This makes me suspect FPC cross produces instructions for the linker 
>> to
>> search for files in wrong directories, where host libraries reside, 
>> that
>> could lead to unpredictable results, and then tons of the warnings are
>> really annoying.
>> What's the way to fix this?
>   Try to use -Xd compiler option
> ~/bin$ fpc -h | grep -- -Xd
>       -Xd        Do not search default library path (sometimes
> required for cross-compiling when not using -XR)

Or better: use -XR/path/to/cross-root. -Xd is a hack that predates the 
introduction of -XR.


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