fix library path, force /usr/lib instead of lib64

kcm-fcitx/PKGBUILD

@@ -1,7 +1,7 @@
 
 pkgname=kcm-fcitx
 pkgver=0.5.1
-pkgrel=1
+pkgrel=2
 pkgdesc="KDE Config Module for Fcitx"
 arch=('x86_64')
 url="https://github.com/fcitx/kcm-fcitx"
@@ -15,7 +15,8 @@ build() {
   cd "$srcdir/$pkgname-$pkgver"
   cmake  \
     -DCMAKE_INSTALL_PREFIX=/usr \
-    -DCMAKE_BUILD_TYPE=Release
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_INSTALL_LIBDIR=lib
   make 
 }