Cannot find library that is on the system

[myz-dev]

Hi,

using WSL Ubuntu 20.04.6 LTS

for a while now I have been trying to cross compile my project with a specific GLIBC version on my target system.
I think zigbuild is exactly what I am looking for and I tried to follow the instructions and compile my program.

From the root directory of my project I run
cargo zigbuild --bin defect_map --release --target i686-unknown-linux-gnu (omitting the specific GLIBC version for the minimal example) and the compilation fails at the very last step, requiring the SQLITE development library: = note: ld.lld: error: unable to find library -lsqlite3.

I have checked my installation of the package dpkg -L libsqlite3-dev:i386 and everything is where it is supposed to be.

The library for the target system is under /usr/lib/i386-linux-gnu which is also configured in /etc/ld.so.conf.d/i386-linux-gnu.conf. Similarly the library exists for my host system, but I do not know if this is relevant for the cross compilation step.

So how can I tell zigbuild where to look for the library?

Best regards

[NobodyXu]

It's likely you are missing pkg-config for this

[myz-dev]

Hi.
My file /usr/lib/i386-linux-gnu/pkgconfig/libsqlite3.pc looks like this:

 # Package Information for pkg-config

prefix=/usr
exec_prefix=${prefix}
libdir=${prefix}/lib/i386-linux-gnu
includedir=${prefix}/include

Name: SQLite
Description: SQL database engine
Version: 3.31.1
Libs: -L${libdir} -lsqlite3
Libs.private: -lm -lm -ldl -lz -lpthread
Cflags: -I${includedir}

I think libdir resolves to /usr/lib/i386-linux-gnu where the library is installed. Do you think I have to change this line?

[NobodyXu]

I suspect that pkg-config loads the wrong libsqlite3.pc.

You can try setting PKG_CONFIG_PATH="/usr/lib/i386-linux-gnu/pkgconfig/", it might help.

[myz-dev]

Unfortunately that does not help. The library is not found during the build process. Thank you very much for your kind help so far, I will see what I can do about this :-)

[NobodyXu]

You can also try setting PKG_CONFIG to your own script that invokes pkg-config with the correct parameter.

[myz-dev]

Ok, thank you, I will check how that works and report the outcome here. Thank you again for your time!