academic/fann: Fix .pc file location.

Signed-off-by: David Spencer <idlemoor@slackbuilds.org>

academic/fann/fann.SlackBuild

@@ -53,6 +53,11 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
  -exec chmod 644 {} \;
 
+# Fix install destination of .pc file
+sed -i \
+  -e 's:/lib/pkgconfig:/lib${LIB_SUFFIX}/pkgconfig:' \
+  CMakeLists.txt
+
 mkdir -p build
 cd build
   cmake \