Implemented absoulte symlink, simplified code and review changes.

Author: priyanshuraj400

brew.yaml

@@ -58,7 +58,10 @@ pipeline:
       # Relocate .pc files to /usr/lib/pkgconfig and create symlinks
       mkdir -p ${{targets.destdir}}/usr/lib/pkgconfig/
       find ${{targets.destdir}}/home/linuxbrew -name "*.pc" | while read pc_file; do
-        mkdir -p "$(dirname "$pc_file")" && mv "$pc_file" "${{targets.destdir}}/usr/lib/pkgconfig/$(basename "$pc_file")" && ln -s "../../../../../usr/lib/pkgconfig/$(basename "$pc_file")" "$pc_file"
+        if [ ! -L "$pc_file" ]; then
+          mv "$pc_file" "${{targets.destdir}}/usr/lib/pkgconfig/$(basename "$pc_file")"
+          ln -s "${{targets.destdir}}/usr/lib/pkgconfig/$(basename "$pc_file")" "$pc_file"
+        fi
       done
 
       # Create profile.d script