diff --git a/x11/library/mesa/actions.py b/x11/library/mesa/actions.py
index 3d12140914..9de572983b 100755
--- a/x11/library/mesa/actions.py
+++ b/x11/library/mesa/actions.py
@@ -90,7 +90,7 @@ def setup():
         shelltools.export("CXX", "g++ -m32")
         shelltools.export("PKG_CONFIG_PATH","/usr/lib32/pkgconfig")
         shelltools.export("LLVM_CONFIG","/usr/bin/llvm-config-32")        
-        options += " --prefix=/usr --libdir=lib32 \
+        options += " --libdir=lib32 \
                      -Ddri-drivers-path=lib32/xorg/modules/dri \
                      -Dclang-libdir-path=/usr/lib32 \
                      -Dgallium-opencl=disabled"
diff --git a/x11/library/mesa/pspec.xml b/x11/library/mesa/pspec.xml
index 78f5cf0e1c..d18fb398e6 100644
--- a/x11/library/mesa/pspec.xml
+++ b/x11/library/mesa/pspec.xml
@@ -20,8 +20,11 @@
             <Dependency>xorg-proto</Dependency>
             <Dependency>openssl-devel</Dependency>
             <Dependency>expat-devel</Dependency>
+            <Dependency>libXt-devel</Dependency>
+            <Dependency>libcap-devel</Dependency>
             <Dependency>libdrm-devel</Dependency>
             <Dependency>libXext-devel</Dependency>
+            <Dependency>elfutils</Dependency>
             <Dependency>wayland-devel</Dependency>
             <Dependency>wayland-server</Dependency>
             <Dependency>wayland-client</Dependency>
@@ -37,11 +40,14 @@
             <Dependency>nettle-devel</Dependency>
             <Dependency>python-mako</Dependency>
             <Dependency versionFrom="6.0.1">llvm</Dependency>
-<!--             <Dependency versionFrom="6.0.1">llvm-libs</Dependency> -->
             <Dependency versionFrom="6.0.1">llvm-clang-devel</Dependency>
             <Dependency versionFrom="1.2">libxshmfence-devel</Dependency>
             <Dependency>automake</Dependency>
             <Dependency>libX11-devel</Dependency>
+            <Dependency>libdrm-intel</Dependency>
+            <Dependency>libdrm-radeon</Dependency>
+            <Dependency>libdrm-amd</Dependency>
+            <Dependency>libdrm-nouveau</Dependency>
             <Dependency>libunwind-devel</Dependency>
             <Dependency>wayland-protocols-devel</Dependency>
             <Dependency>libXrandr-devel</Dependency>
@@ -136,7 +142,7 @@
             <Dependency>zlib-32bit</Dependency>
             <Dependency>elfutils-32bit</Dependency>
             <Dependency>expat-32bit</Dependency>
-            <Dependency>libXt-devel</Dependency>
+            <Dependency>libXt-32bit</Dependency>
             <Dependency>libXv-32bit</Dependency>
             <Dependency>libX11-32bit</Dependency>
             <Dependency>libcap-32bit</Dependency>
@@ -189,6 +195,7 @@
         </RuntimeDependencies>
         <Files>
             <Path fileType="library">/usr/lib32</Path>
+            <Path fileType="data">/usr/share/vulkan/icd.d/*.i686.json</Path>
         </Files>
         <Provides>
             <COMAR script="package-emul32.py">System.Package</COMAR>
@@ -197,7 +204,7 @@
 
     <History>
         <Update release="13">
-            <Date>2019-01-03</Date>
+            <Date>2019-01-22</Date>
             <Version>18.2.8</Version>
             <Comment>Rebuild llvm.</Comment>
             <Name>Mustafa Cinasal</Name>