DicomViewer （编译以及优化）8

DicomViewer （编译以及优化）8需要先看清适用场景和关键步骤，避免只记结论却忽略实际限制。

背景

上一篇新建了vcpkg.json后，使用cmake关联vcpkg，每次运行都要很久。后面又回到命令行使用vcpkg安装依赖，cmake直接使用vcpkg生成的库。

Windows和ubuntu下vcpkg区别

wsl2下需要xcb，但是Windows不需要。查了下vcpkg.json支持配置平台，之前观察到qt安装了其他版本的类库，所以对应的依赖也加了版本，所以最终效果如下。

{"name":"dicom-viewer","version":"1.0.0","dependencies":[{"name":"qtbase","default-features":false,"features":["widgets","gui","opengl","xcb"],"platform":"linux"},{"name":"qtbase","default-features":false,"features":["widgets","gui","opengl"],"platform":"windows"},{"name":"dcmtk"},{"name":"gdcm"},{"name":"vtk","default-features":false,"features":["qt","opengl"]},{"name":"vtk-dicom","default-features":false,"features":["gdcm"]}],"builtin-baseline":"a0400024711b283056538ac19ced80b91a83c24c","overrides":[{"name":"qtbase","version":"6.8.3","port-version":5},{"name":"qtdeclarative","version":"6.8.3","port-version":0},{"name":"qtlanguageserver","version":"6.8.3","port-version":0},{"name":"qtshadertools","version":"6.8.3","port-version":0},{"name":"qtsvg","version":"6.8.3","port-version":0},{"name":"dcmtk","version":"3.6.7","port-version":0},{"name":"gdcm","version":"3.0.24","port-version":0},{"name":"vtk","version":"9.3.0-pv5.12.1","port-version":17},{"name":"vtk-dicom","version":"0.8.17","port-version":0}],"$schema":"https://raw.githubusercontent.com/microsoft/vcpkg-tool/main/docs/vcpkg.schema.json"}

编译运行

本来用命令来指定vcpkg的前缀的，如下

cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DCMAKE_PREFIX_PATH="$(pwd)/vcpkg_installed/x64-linux/debug;$(pwd)/vcpkg_installed/x64-linux" -G Ninja  -DAUTO_DEPLOY_FONTS=ONcmake --build build -j10

后面查到可以用CMakePresets.json，然后就追加了如下 CMakePresets.json

"buildPresets":[{"name":"wsl-debug","configurePreset":"wsl-debug","jobs":10}],"configurePresets":[{"name":"wsl-debug","displayName":"WSL Debug","description":"Debug build on WSL (x64-linux)","binaryDir":"${sourceDir}/build","generator":"Ninja","cacheVariables":{"CMAKE_BUILD_TYPE":"Debug","CMAKE_CXX_FLAGS":"","CMAKE_PREFIX_PATH":"${sourceDir}/vcpkg_installed/x64-linux/debug;${sourceDir}/vcpkg_installed/x64-linux","AUTO_DEPLOY_FONTS":"ON"},"condition":{"type":"equals","lhs":"${hostSystemName}","rhs":"Linux"}},

运行的命令改为如下

cmake --preset wsl-debugcmake --build--preset wsl-debug

CMakeList.txt 追加fonts的复制

# ============================================================# 自动部署 Qt 字体（仅 Linux + Debug）# ============================================================option(AUTO_DEPLOY_FONTS "Auto copy system fonts for Qt (Linux/Debug only)" OFF)if(AUTO_DEPLOY_FONTS AND UNIX)    # Qt 会找这个路径    set(QT_FONT_DEST "${CMAKE_SOURCE_DIR}/vcpkg_installed/x64-linux/debug/lib/fonts")    if(NOT EXISTS "${QT_FONT_DEST}")        file(MAKE_DIRECTORY "${QT_FONT_DEST}")        # 系统字体来源（Ubuntu 默认路径）        set(SYSTEM_FONT_DIR "/usr/share/fonts/truetype/dejavu")        if(EXISTS "${SYSTEM_FONT_DIR}")            file(GLOB DEJAVU_FONTS "${SYSTEM_FONT_DIR}/*.ttf")            foreach(FONT ${DEJAVU_FONTS})                file(COPY "${FONT}" DESTINATION "${QT_FONT_DEST}")                message(STATUS "  Deployed font: ${FONT}")            endforeach()            message(STATUS "✅ Deployed DejaVu fonts to ${QT_FONT_DEST}")        else()            message(WARNING "⚠️ DejaVu fonts not found at ${SYSTEM_FONT_DIR}")            message(WARNING "  Install with: sudo apt install fonts-dejavu-core")        endif()    else()        message(STATUS "Qt fonts already deployed at ${QT_FONT_DEST}")    endif()endif()

这个会检查vcpkg的目录是否有fonts，没有，则从系统复制字体

dicom.dic dcmtk的字典

~/.bashrc 追加如下配置

export DCMDICTPATH="/home/ubuntu/xcyxiner/DicomViewer/vcpkg_installed/x64-linux/share/dcmtk/dicom.dic"

.clangd 同样更新头文件地址

CompileFlags:Add:-"-I/home/ubuntu/xcyxiner/DicomViewer/vcpkg_installed/x64-linux/include/Qt6"-"-I/home/ubuntu/xcyxiner/DicomViewer/vcpkg_installed/x64-linux/include/Qt6/QtWidgets"-"-I/home/ubuntu/xcyxiner/DicomViewer/vcpkg_installed/x64-linux/include/Qt6/QtCore"-"-I/home/ubuntu/xcyxiner/DicomViewer/vcpkg_installed/x64-linux/include/Qt6/QtGui"-"-I/home/ubuntu/xcyxiner/DicomViewer/vcpkg_installed/x64-linux/include"-"-I/home/ubuntu/xcyxiner/DicomViewer/vcpkg_installed/x64-linux/include/vtk-9.3"-"-I/home/ubuntu/xcyxiner/DicomViewer/source"-"-I/home/ubuntu/xcyxiner/DicomViewer/build/DicomViewer_exe_autogen/include"CompilationDatabase:build/dev

前面是qt的头文件，dcmtk的头文件所在的目录，vtk的头文件，当前程序的头文件，最后的是uic生成的.h文件

效果

2.sh vcpkg安装

~/vcpkg/vcpkg install  --triplet x64-linux --overlay-triplets=./triplets

编译

cmake --preset wsl-debugcmake --build--preset wsl-debug

运行

配置fonts后菜单能正常显示 配置了dmctk的字典后选择dcm不会再报错