Question

I did install the libnfc 1.5.1 in the default directory (/usr/loca/
lib).

if i do an ls i see the libs there:

foo:libnfc-1.5.1 bar$ ls -l /usr/local/lib/libnfc* 
-rwxr-xr-x  1 root  wheel   62092 Nov 23 09:05 /usr/local/lib/libnfc.2.dylib 
-rw-r--r--  1 root  wheel  226696 Nov 23 09:05 /usr/local/lib/libnfc.a 
lrwxr-xr-x  1 root  wheel      14 Nov 23 09:05 /usr/local/lib/libnfc.dylib ->libnfc.2.dylib 
-rwxr-xr-x  1 root  wheel     930 Nov 23 09:05 /usr/local/lib/libnfc.la 
foo:libnfc-1.5.1 bar$ 

I did try to run the configure script from mfoc with the following command:

LDFLAGS="-L/usr/local/lib"  ./configure 

it says that I don’t have libnfc >= 1.5.1

checking for LIBNFC... no 
configure: error: libnfc >= 1.5.1 is mandatory. 

any idea?

Answer 1

This is a guess, but the error looks like it comes from pkg-config. Try:

$ ./configure LDFLAGS=-L/usr/local/lib PKG_CONFIG_PATH=/usr/local/lib/pkgconfig

You really need to look in config.log to see exactly why it cannot find the library.

EDIT: It has often been claimed that pkg-config is fundamentally broken. This case has finally persuaded me that that is indeed true. Setting LDFLAGS should be sufficient, and the fact that it isn’t renders this configure script broken. With that in mind, it might be better to disable pkg-config by running configure with the argument PKG_CONFIG=: