BUG解决之路-1 Linux下fcitx输入法候选框在IDEA等JetBrains系列IDE中不跟随光标（JetBrains Runtime版本：11.0.7）

解决方案

手动编译JetBrainsRuntime + OpenJFX，修复该bug，以及正常预览Markdown文件(依赖JavaFX)

环境配置

系统：Ubuntu 18.04 LTS

内存：4GB物理内存 + 4GB虚拟内存(swap)

Java版本：OpenJDK 11.0.8

gcc版本：gcc 7.5.0

解决步骤

编译OpenJFX

1. 安装依赖

sudo apt install ksh bison flex gperf build-essential libasound2-dev libgl1-mesa-dev \ libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libjpeg-dev \ libpng-dev libx11-dev libxml2-dev libxslt1-dev libxt-dev \ libxxf86vm-dev pkg-config x11proto-core-dev \ x11proto-xf86vidmode-dev libavcodec-dev mercurial \ libgtk2.0-dev libgtk-3-dev \ libxtst-dev libudev-dev libavformat-dev ant sudo apt install cmake ruby

2. 安装OpenJDK11，配置环境变量(编译需要)

sudo apt install openjdk-11-jdk export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64 export JDK_HOME=$JAVA_HOME

3. 获取OpenJFX源码

sudo apt install mercurial hg clone http://hg.openjdk.java.net/openjfx/11-dev/rt

4. 编译

cd rt chmod a+x gradlew ./gradlew -PCOMPILE_WEBKIT=true #注意一定要编译Webkit，不然Markdown一样无法预览

5. 已知问题解决方案

1）virtual memory exhausted: Cannot allocate memory

内存不够，分配虚拟内存后重新编译

mkdir /usr/img dd if=/dev/zero of=/usr/img/swap bs=1024 count=4096000 mkswap /usr/img/swap swapon /usr/img/swap ./gradlew -PCOMPILE_WEBKIT=true #重新编译

编译JetBrainsRuntime

1. 获取JetBrainsRuntime源码

git clone https://github.com/JetBrains/JetBrainsRuntime.git

2. 下载并应用patch

cd JetBrainsRuntime git checkout cfc3e87f2ac27a0b8c78c729c113aa52535feff6 wget https://raw.githubusercontent.com/prehonor/myJetBrainsRuntime/master/idea.patch git apply idea.patch

3. 安装依赖

sudo apt install autoconf make build-essential libx11-dev \ libxext-dev libxrender-dev libxtst-dev libxt-dev \ libxrandr-dev libcups2-dev libfontconfig1-dev \ libasound2-dev

4. 编译并整合OpenJFX

sh ./configure --disable-warnings-as-errors --with-import-modules=_path_to_jfx-dev_/rt/build/modular-sdk #_path_to_jfx-dev_是第一步获取的OpenJFX源码即rt文件夹的绝对路径, 下面path_to_JetBrainsRuntime同理 make images

安装JetBrainsRuntime

1. 重命名jdk为jbr

cd path_to_JetBrainsRuntime/JetBrainsRuntime/build/linux-x86_64-normal-server-release/images mv jdk jbr

2. IDE安装Choose Runtime插件

3. 安装编译得到的JBR

IDE里按 CTRL+SHIFT+A，输入choose runtime，选择jbr的路径，点击install，IDE自动重启，安装完毕

解决效果

已在Intellij IDEA 2020.1，WebStorm 2020.2以及PyCharm 2020.2上自测通过，效果图如下

附上本人编译完成的JetBrainsRuntime:

下载地址

参考链接

https://blog.csdn.net/roland_sun/article/details/103380890

https://blog.csdn.net/u011166277/article/details/106287587?utm_source=app

https://www.cnblogs.com/chenpingzhao/p/4820814.html

https://github.com/JetBrains/JetBrainsRuntime

https://wiki.openjdk.java.net/display/OpenJFX/Building+OpenJFX