WSL2のUbuntuでVitisを起動する

- Ubuntu20.04 on WSL2
- vitis 2020.2
- vitis_hls 2020.2

WSL2のUbuntu20.04にインストールしたvitisが起動してくれませんでした。ちゃんと`installLibs.sh`は実行しているので必要なライブラリはインストールされているはずなのですが。。

起動しようとして失敗したときのメッセージにlogを残したとあったので覗いてみました。

```bash
$ vitis
****** Xilinx Vitis Development Environment
****** Vitis v2020.2 (64-bit)
  **** SW Build 3064172 on 2020-11-18-06:24:19
    ** Copyright 1986-2020 Xilinx, Inc. All Rights Reserved.

Launching Vitis with command /tools/Xilinx/Vitis/2020.2/eclipse/lnx64.o/eclipse -vmargs -Xms64m -Xmx1024m -Dorg.eclipse.swt.internal.gtk.cairoGraphics=false -Dosgi.configuration.area=@user.home/.Xilinx/Vitis/2020.2 --add-modules=ALL-SYSTEM --add-opens=java.base/java.nio=ALL-UNNAMED --add-opens=java.desktop/sun.swing=ALL-UNNAMED --add-opens=java.desktop/javax.swing=ALL-UNNAMED --add-opens=java.desktop/javax.swing.tree=ALL-UNNAMED --add-opens=java.desktop/javax.swing.plaf.basic=ALL-UNNAMED --add-opens=java.desktop/javax.swing.plaf.synth=ALL-UNNAMED --add-opens=java.desktop/com.sun.awt=ALL-UNNAMED --add-opens=java.desktop/sun.awt.X11=ALL-UNNAMED &
Eclipse:
An error has occurred. See the log file
/home/yoshi/.Xilinx/Vitis/2020.2/1612736917742.log.
```

ログの中身は下記のようになっています。

```bash
$ cat
!ENTRY org.eclipse.osgi 4 0 2021-02-08 07:29:24.614
!MESSAGE Application error
!STACK 1
java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons:
        no swt-pi4-gtk-4932r18 in java.library.path: [/tools/Xilinx/Vitis/2020.2/tps/lnx64/javafx-sdk-11.0.2/lib, /tools/Xilinx/Vitis/2020.2/lib/lnx64.o/Ubuntu, /tools/Xilinx/Vitis/2020.2/lib/lnx64.o, /tools/Xilinx/Vitis/2020.2/tps/lnx64/jre11.0.2/lib/, /tools/Xilinx/Vitis/2020.2/tps/lnx64/jre11.0.2/lib//server, /tools/Xilinx/Vitis/2020.2/lib/lnx64.o, /tools/Xilinx/Vitis/2020.2/lib/lnx64.o/Ubuntu, /tools/Xilinx/Vitis/2020.2/lib/lnx64.o, /tools/Xilinx/Vitis/2020.2/tps/lnx64/python-3.8.3/lib, /tools/Xilinx/Vivado/2020.2/bin/../lnx64/tools/dot/lib, /tools/Xilinx/Vitis/2020.2/bin/../lnx64/tools/dot/lib, /usr/java/packages/lib, /usr/lib64, /lib64, /lib, /usr/lib]
        no swt-pi4-gtk in java.library.path: [/tools/Xilinx/Vitis/2020.2/tps/lnx64/javafx-sdk-11.0.2/lib, /tools/Xilinx/Vitis/2020.2/lib/lnx64.o/Ubuntu, /tools/Xilinx/Vitis/2020.2/lib/lnx64.o, /tools/Xilinx/Vitis/2020.2/tps/lnx64/jre11.0.2/lib/, /tools/Xilinx/Vitis/2020.2/tps/lnx64/jre11.0.2/lib//server, /tools/Xilinx/Vitis/2020.2/lib/lnx64.o, /tools/Xilinx/Vitis/2020.2/lib/lnx64.o/Ubuntu, /tools/Xilinx/Vitis/2020.2/lib/lnx64.o, /tools/Xilinx/Vitis/2020.2/tps/lnx64/python-3.8.3/lib, /tools/Xilinx/Vivado/2020.2/bin/../lnx64/tools/dot/lib, /tools/Xilinx/Vitis/2020.2/bin/../lnx64/tools/dot/lib, /usr/java/packages/lib, /usr/lib64, /lib64, /lib, /usr/lib]
        Can't load library: /home/yoshi/.swt/lib/linux/x86_64/libswt-pi4-gtk-4932r18.so
        Can't load library: /home/yoshi/.swt/lib/linux/x86_64/libswt-pi4-gtk.so

        at org.eclipse.swt.internal.Library.loadLibrary(Library.java:342)
        at org.eclipse.swt.internal.Library.loadLibrary(Library.java:256)
        at org.eclipse.swt.internal.gtk.OS.<clinit>(OS.java:90)
        at org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:209)
        at org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:155)
        at org.eclipse.swt.widgets.Display.<clinit>(Display.java:164)
        at org.eclipse.ui.internal.Workbench.createDisplay(Workbench.java:760)
        at org.eclipse.ui.PlatformUI.createDisplay(PlatformUI.java:166)
        at com.xilinx.ide.application.ui.Application.createDisplay(Application.java:109)
        at com.xilinx.ide.application.ui.Application.start(Application.java:63)
        at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
        at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
        at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657)
        at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594)
        at org.eclipse.equinox.launcher.Main.run(Main.java:1447)
        at org.eclipse.equinox.launcher.Main.main(Main.java:1420)
```

swtライブラリ関連でエラーが起こっているようで怪しいのは`Can't load library: /home/yoshi/.swt/lib/linux/x86_64/libswt-pi4-gtk-4932r18.so`あたり。swt関連のライブラリをインストールしてきたら、vitis、vitis_hls共に起動するようになりました。

```bash
$ sudo apt install libswt-gtk-4-jni
```