For additional sources - see target_sources cmake command

As a side, not important question, is there a way to add sources to a target after the initial qt_add_executable ? I ask this for ease of future use for programs with large numbers of source files.

Thanks,
Dale Pennington

1. Files are in the following tree

    guiclient2 - Has .pro file
        forms - has ui file
        inc - has .hpp files
        src - has .cpp files

The CMakeLists.txt file has

cmake_minimum_required(VERSION 3.16)
project(guiclient LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

set(CMAKE_AUTOUIC_SEARCH_PATHS "forms")

find_package(Qt5 REQUIRED COMPONENTS Widgets WebSockets)

qt_standard_project_setup()

qt_add_executable(guiclient2
    src/main.cpp
    src/echowindow.cpp
}

target_include_directories(guiclient2 PRIVATE inc)
target_link_libraries(guiclient2 PRIVATE
    Qt::Widgets
    Qt::WebSockets
)

The original cmake call sets up the AutogenInfo.json, so it must be determining what UI and MOC need generating at that time.
As noted, if I do the same files in a flat setup (all in guiclient2) it works fine with the same CMakeLists.txt with the paths modified.

I hope this helps figure out what I am doing wrong.
Dale Pennington

Might be a silly question but did you set the AUTOMOC_INCLUDE_DIRECTORIES property ?

Did you try

QT -= svg

if you do not need SVG?