Cannot build Qt project on Linux, but it does on windows

[jepessen]

Describe the bug
I'm working on a CMake project. I use vcpkg for using Qt and all other libraries. The project builds correctly on windows, but I've a CMake configuration error in Linux.

This is the CMakeFiles.txt that gives me the problem:

cmake_minimum_required (VERSION 3.13.4)

project (zlaeditorgui)

message (STATUS "Building project ${PROJECT_NAME}")

set (Boost_USE_MULTITHREADED ON)
unset (Boost_INCLUDE_DIR CACHE)
unset (Boost_LIBRARY_DIRS CACHE)
set (CMAKE_INCLUDE_CURRENT_DIR ON)
set (CMAKE_AUTOMOC ON)
set (CMAKE_AUTORCC ON)

find_package (Boost COMPONENTS program_options filesystem REQUIRED)
find_package(Qt5 COMPONENTS Core Widgets Gui REQUIRED)

include_directories (${CMAKE_SOURCE_DIR}/src ${CMAKE_SOURCE_DIR}/src/Serializers ${Boost_INCLUDE_DIRS})
include_directories (${CMAKE_SOURCE_DIR}/thirdparty/loginlib/src)

set (PROJECT_SRC
  main.cpp
  manyotherfiles.cpp
  )

set (PROJECT_QRC
  Resources/ZLAEditorGui.qrc
  )

add_executable (${PROJECT_NAME} ${PROJECT_SRC} ${PROJECT_QRC})
target_compile_features(${PROJECT_NAME} PRIVATE cxx_std_17)

target_link_libraries(${PROJECT_NAME} ${Boost_LIBRARIES} otherlibraries Qt5::Core Qt5::Widgets Qt5::Gui)

This is the error that I've when I build.

[build] Starting build
[proc] Executing command: /usr/bin/cmake --build /home/login/Projects/zla/build/vscode --config Debug --target all -- -j 1
[build] [1/12   8% :: 0.018] Automatic MOC for target zlaeditorgui
[build] [2/11  18% :: 0.396] Linking CXX executable build/Debug/bin/zlaeditorgui
[build] FAILED: build/Debug/bin/zlaeditorgui 
[build] : && /bin/g++-9  -g   src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/main.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/ProgramOptions.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/ApplicationOptions.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Application.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/SessionManager.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/MainWindow.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/MenuBar.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/SessionToolbar.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/CodeGenerationToolbar.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/StatusBar.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/ObjectModel.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/Federate.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/FederatesList.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/Tree.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/StackedEditor.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/EmptyEditor.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/SimpleDatatypeEditor.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/EnumeratedDatatypeEditor.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/ArrayDatatypeEditor.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/StructureDatatypeEditor.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/Unit.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/Multiplicity.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/ObjectSectionEditor.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/ObjectNamespaceEditor.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/DatatypeNamespaceEditor.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/RootObjectEditor.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/ObjectEditor.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/Gui/ObjectAttribute.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/zlaeditorgui_autogen/mocs_compilation.cpp.o src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/zlaeditorgui_autogen/S5YYZ2ZCNV/qrc_ZLAEditorGui.cpp.o  -o build/Debug/bin/zlaeditorgui  -Wl,-rpath,/home/login/Projects/zla/build/vscode/build/Debug/lib /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libboost_program_options.a /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libboost_filesystem.a build/Debug/lib/libxmlserializer.so /home/login/Projects/vcpkg/installed/x64-linux/lib/libQt5Core.a /home/login/Projects/vcpkg/installed/x64-linux/lib/libQt5Widgets.a /home/login/Projects/vcpkg/installed/x64-linux/lib/libQt5Gui.a build/Debug/lib/libsession.so build/Debug/lib/libast.so /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libboost_serialization.a /home/login/Projects/vcpkg/installed/x64-linux/lib/libQt5Core.a /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libjpeg.a /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libfreetyped.a /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libpng16d.a /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libz.a /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libbz2d.a /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libsqlite3.a -lpthread /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libharfbuzz.a /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libfreetyped.a /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libbz2d.a /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libpng16d.a /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libz.a /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libdouble-conversion.a /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libssl.a /home/login/Projects/vcpkg/installed/x64-linux/debug/lib/libcrypto.a -ldl -lpcre2-16_LIBRARY_DEBUG-NOTFOUND -llibpq_LIBRARY_DEBUG-NOTFOUND -lQt5ThemeSupport_LIBRARY_DEBUG-NOTFOUND -lQt5EventDispatcherSupport_LIBRARY_DEBUG-NOTFOUND -lQt5PlatformCompositorSupport_LIBRARY_DEBUG-NOTFOUND -lQt5FontDatabaseSupport_LIBRARY_DEBUG-NOTFOUND && :
[build] /usr/bin/ld: cannot find -lpcre2-16_LIBRARY_DEBUG-NOTFOUND
[build] /usr/bin/ld: cannot find -llibpq_LIBRARY_DEBUG-NOTFOUND
[build] /usr/bin/ld: cannot find -lQt5ThemeSupport_LIBRARY_DEBUG-NOTFOUND
[build] /usr/bin/ld: cannot find -lQt5EventDispatcherSupport_LIBRARY_DEBUG-NOTFOUND
[build] /usr/bin/ld: cannot find -lQt5PlatformCompositorSupport_LIBRARY_DEBUG-NOTFOUND
[build] /usr/bin/ld: cannot find -lQt5FontDatabaseSupport_LIBRARY_DEBUG-NOTFOUND
[build] collect2: error: ld returned 1 exit status
[build] ninja: build stopped: subcommand failed.
[build] Build finished with exit code 1

I've checked and, for example, both pcre2 and libpq are installed correctly using vcpkg, so I don't know where the error is.

I've also tried to use find_package with not found libraries, like Qt5FontDatabaseSupport but I cannot find them.

What I'm doing wrong?

I'm using Kubuntu 19.04

[Neumann-A]

How does your CMake cmd line look like?

[jepessen]

That output appears when I use the Visual Studio code cmake extension with following settings:

{
    "cmake.buildDirectory": "${workspaceRoot}/build/vscode",
    "cmake.configureSettings": {
      "CMAKE_TOOLCHAIN_FILE" : "~/Projects/vcpkg/scripts/buildsystems/vcpkg.cmake",
      "VCPKG_TARGET_TRIPLET": "x64-linux"
    },
    "cmakeExplorer.buildDir": "build/vscode",
    "cmakeExplorer.logpanel": true,
    "cmake.ctestArgs": [
      "--output-on-failure"
    ],
    "C_Cpp.default.includePath": [
      "/Projects/vcpkg/installed/x64-linux"
    ],
    "cmake.configureOnOpen": true,
    "cmake.parallelJobs": 1
  }

With the console command:

cmake -DVCPKG_DEFAULT_TRIPLET=x64-linux -DCMAKE_TOOLCHAIN_FILE=~/Projects/vcpkg/scripts/buildsystems/vcpkg.cmake ../../

I obtain following error

/usr/bin/ld: cannot find -llibpq
/usr/bin/ld: cannot find -llibpq_LIBRARY_RELEASE-NOTFOUND
collect2: error: ld returned 1 exit status
make[2]: *** [src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/build.make:568: build/bin/zlaeditorgui] Error 1
make[1]: *** [CMakeFiles/Makefile2:1326: src/ZLAEditorGui/CMakeFiles/zlaeditorgui.dir/all] Error 2
make: *** [Makefile:95: all] Error 2

[janholt]

From VSCode you get cmake config with CMAKE_BUILD_TYPE=Debug
Additional libraries, like Qt5FontDatabaseSupport, are linked in share/qt5core/vcpkg-cmake-wrapper.cmake by

function(add_qt_library _target)
    foreach(_lib IN LISTS ARGN)
        find_library(${_lib}_LIBRARY_DEBUG NAMES ${_lib}d PATH_SUFFIXES debug/plugins/platforms)
        find_library(${_lib}_LIBRARY_RELEASE NAMES ${_lib} PATH_SUFFIXES plugins/platforms)
        set_property(TARGET ${_target} APPEND PROPERTY INTERFACE_LINK_LIBRARIES
        \$<\$<NOT:\$<CONFIG:DEBUG>>:${${_lib}_LIBRARY_RELEASE}>\$<\$<CONFIG:DEBUG>:${${_lib}_LIBRARY_DEBUG}>)
    endforeach()
endfunction()

Qt5FontDatabaseSupport_LIBRARY_DEBUG-NOTFOUND comes from find_library( ... ${lib}d ...), but on Linux Qt libraries in debug folder does not get d suffix (there is only debug\lib\libQt5FontDatabaseSupport.a)

Fix for libpq: #9260, see commit Update the Wrapper to use the Postgres target

[jepessen]

Ok then I'll wait, thanks for taking care of this.

[NancyLi1013]

Hi @jepessen thanks for posting this issue.
The PR #9260 has been merged.
Could you update vcpkg and try to built it again?

[NancyLi1013]

I cannot repro on my local.
This should be fixed now. Please try to update vcpkg and rebuild this.