/sbin/ldconfig.real: /usr/local/lib is not a known library type

Question

I was following this instruction on this site to installing tesseract: https://github.com/tesseract-ocr/tesseract/wiki/Compiling

git clone https://github.com/tesseract-ocr/tesseract.git
cd tesseract
./autogen.sh
./configure
make
sudo make install
sudo ldconfig

But there is a problem in the last line and I got this error messages when I tried ldconfig:

/sbin/ldconfig.real: /usr/local/lib is not a known library type
/sbin/ldconfig.real: /usr/local/lib/pkgconfig is not a known library type

What's that error meaning and how can I fix it?

This is the content of /etc/ld.so.conf.d/libc.conf :

# libc default configuration
/usr/local/lib

Answer 1

Yeah well you can't compile if your linker doesn't know where your libraries are. ldconfig is the utility that sets up your linked libraries and it's looking for you to tell it where your shared libraries are in /etc/ld.so.conf.d/libc.conf. The problem is that in that conf file you have a grand total of ONE path listed, but it's saying that's not even a real path.

You need to add the proper paths to where you keep your shared libraries to ld.so.conf.

Instructions says you need to have leptonica-dev package installed in order to have those shared libraries since what you're trying to build depends on them to compile. I'm assuming you didn't since it can't find the shared libraries.

I'm kind of new to this site but it's weird how I can get docked points for providing a perfectly legitimate answer. Doesn't leave much incentive to help if their reward system is all screwed up.