Description of problem:

On x86-64, the file /usr/lib64/pkgconfig/libwebp.pc contains the line "libdir=${prefix}/lib". It should contain a line "libdir=${prefix}/lib64"
or "libdir=/usr/lib64", as is common in the other *.pc files.

There is a similar bug in libwebpdecoder.pc, libwebpdemux.pc, and
libwebpmux.pc in the same directory.

Version-Release number of selected component (if applicable):

libwebp-devel-1.2.4-1.fc36.x86_64

How reproducible:

Run the shell command: "pkgconf --libs libwebp".
It will output "-L/usr/lib -lwebp".
It should output just "-lwebp".
The bogus "-L/usr/lib" causes gcc to try to link to 32-bit libraries
even though we're building a 64-bit executable. 

Steps to Reproduce:
1. dnf install libwebp-devel.x86_64 libwebp-devel.i686
2. echo 'int main (void) {}' >t.c
3. gcc t.c $(pkgconf --libs libwebp)

Actual results:

/usr/bin/ld: skipping incompatible /usr/lib/libwebp.so when searching for -lwebp
/usr/bin/ld: skipping incompatible /usr/lib/libc.so when searching for -lc

Expected results:

The compilation should succeed quietly.

Additional info: