编译fcitx5

警告

由于时间精力有限，我没有完成 Raspbery Pi OS(Raspbian) 环境编译fcitx5 。不过，可能根据 Debian 9 testing 下安装 fcitx5 文档，应该是能够完成编译的。

我走了不少弯路，这里文章仅供归档参考，后续有时间精力再完善。目前我改为直接使用发行版提供二进制软件包。

在 Raspbery Pi OS(Raspbian) 环境编译fcitx5

准备

  • 安装编译依赖工具:

    sudo apt install gcc g++ cmake extra-cmake-modules make \
   libxcb1 libxcb1-dev libxcb-util1 libxcb-util-dev libxcb-keysyms1 libxcb-keysyms1-dev \
   expat pkg-config libjson-c-dev dbus libfmt-dev

上述列表可能不全，我现在没有时间再继续探索，建议参考 Debian 9 testing 下安装 fcitx5

sudo apt install build-essential cmake extra-cmake-modules libxcb1-dev \
    libxcb-keysyms1-dev libxcb-util0-dev libdbus-1-dev libevent-dev uuid-dev \
    gettext libsystemd-dev libxkbfile-dev libxkbcommon-x11-dev libxcb-xkb-dev \
    libxcb1-dev libpango1.0-dev libpangocairo-1.0-0 libenchant-dev libxcb-ewmh-dev \
    libxcb-xinerama0-dev libxcb-icccm4-dev libxcb-ewmh-dev wayland-protocols \
    libboost-dev libcurl4-gnutls-dev libopencc-dev qt5libwebengine5-dev \
    libqt5webchannel5-dev qt4-qmake libqt4-dev qtbase5-dev libboost-iostreams-dev \
    gobject-introspection libgirepository1.0-dev libgtk2.0-dev libgtk-3-dev

编译

xcb-imdkit

编译 xcb-imdkit 需要安装:: libxcb, xcb-util, xcb-util-keysym

sudo apt install libxcb1 libxcb1-dev libxcb-util1 libxcb-util-dev libxcb-keysyms1 libxcb-keysyms1-dev

  • 编译安装 xcb-imdkit

    git clone https://github.com/fcitx/xcb-imdkit.git
cd xcb-imdkit
cmake .

make
sudo make install

emoji(未安装支持)

我不使用emoji，所以后续编译 fcitx5 使用参数 -DENABLE_EMOJI=Off

fcitx5

  • 下载fcitx源代码:

    git clone https://github.com/fcitx/fcitx5.git

  • 编译需要依赖 libevent

    sudo apt install libevent-dev

libevent

但是fcitx5 cmake 报错:

CMake Warning at CMakeLists.txt:86 (find_package):
  By not providing "FindLibevent.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Libevent",
  but CMake did not find one.

  Could not find a package configuration file provided by "Libevent" with any
  of the following names:

    LibeventConfig.cmake
    libevent-config.cmake

参考 cmake链接libevent的问题 ，确实通过 apt install libevent-dev 没有安装过上述文件，在debian官方包搜索也找不到，所以还是改为从源代码编译安装 libevent

sudo apt purge libevent-dev
sudo apt autoremove

# 编译libevent 依赖 ssl，mbedtls 所以先安装
sudo apt install libssl-dev libmbedtls-dev

git clone https://github.com/libevent/libevent.git
cd libevent
mkdir build && cd build
cmake ..

这里有报错，检查 CMakeFiles/CMakeError.log 有如下错误:

/home/huatai/fcitx5/libevent/build/CMakeFiles/CheckIncludeFiles/EVENT__HAVE_PORT_H.c:22:10: fatal error: port.h: No such file or directory
22 | #include <port.h>
   |          ^~~~~~~~
compilation terminated.
gmake[1]: *** [CMakeFiles/cmTC_79256.dir/build.make:85: CMakeFiles/cmTC_79256.dir/EVENT__HAVE_PORT_H.c.o] Error 1

在源代码 evport.c 中有:

#include <port.h>

根据 configure.ac 内容:

AC_CHECK_HEADERS([arpa/inet.h fcntl.h ifaddrs.h mach/mach_time.h mach/mach.h netdb.h netinet/in.h netinet/in6.h netinet/tcp.h sys/un.h poll.h port.h stdarg.h stddef.h sys/devpoll.h sys/epoll.h sys/event.h sys/eventfd.h sys/ioctl.h sys/mman.h sys/param.h sys/queue.h sys/resource.h sys/select.h sys/sendfile.h sys/socket.h sys/stat.h sys/time.h sys/timerfd.h sys/uio.h sys/wait.h sys/random.h errno.h afunix.h])

可以看到，所有头文件默认都是在 /usr/include ，例如 /usr/include/arpa/inet.h

也就是需要访问 /usr/include/port.h ，这是哪个软件包提供的？从 https://packages.debian.org/search 无法找到 - 所以采用 文件查找

sudo apt install apt-file
sudo apt-file update

尝试搜索:

apt-file search /usr/include/port.h

没有结果

而 poll.h 则是 libc6-dev 提供的

从系统来看，目前只默认安装了 /usr/include/brotli/port.h ( libbrotli-dev LZ77压缩解压缩库)

真是一个问题带出另一个问题...

不过，确实可以从 libevent 源代码中找到 LibeventConfig.cmake ，看来从源代码安装是会包含这个文件的，应该能够满足 fcitx5 编译需求。

尝试了一下在ubuntu环境中安装 libevent-dev 可以看到会依赖安装:

libevent-core-2.1-7 libevent-extra-2.1-7 libevent-openssl-2.1-7 libevent-pthreads-2.1-7

  • 继续:

    make
make verify  # (optional)

fcitx5(继续)

  • 编译 - 关闭了wayland , 关闭 enchant(基于abiword的拼写检查) , 关闭 emoji

    cd fcitx5
cmake -DENABLE_WAYLAND=Off -DENABLE_ENCHANT=off -DENABLE_EMOJI=Off .

这里报错:

CMake Warning at CMakeLists.txt:86 (find_package):
  By not providing "FindLibevent.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Libevent",
  but CMake did not find one.

  Could not find a package configuration file provided by "Libevent" with any
  of the following names:

    LibeventConfig.cmake
    libevent-config.cmake

  Add the installation prefix of "Libevent" to CMAKE_PREFIX_PATH or set
  "Libevent_DIR" to a directory containing one of the above files.  If
  "Libevent" provides a separate development package or SDK, be sure it has
  been installed.

解决方法增加参数 -DCMAKE_PREFIX_PATH=/usr/include/event2 ?

参考