HAVE_XGENERICEVENT fails even though it's supported.

[Gpinchon]

Issue

When trying to build SDL2 manually, this test fails even though it compiles and runs properly when compiled manually. Meaning building SDL2 ultimately fails with XGenericEventCookie related errors.

Faulty line

https://github.com/libsdl-org/SDL/blob/7aba6c4c735a072ee019df94c5fda9057f6dbcd7/cmake/sdlchecks.cmake#L370C7-L370C30

Build options

option(SDL_SHARED "" OFF)
option(SDL_STATIC "" ON)
option(SDL2_DISABLE_SDL2MAIN  "" ON) # gets ignored by build script
option(SDL2_DISABLE_UNINSTALL "" ON) # ignored
option(SDL2_DISABLE_INSTALL   "" ON) # ignored as well

System specs

OS : Ubuntu on WSL2
Compiler : Clang 18.1.3
ToolChain : GNU
Git tag : release-2.32.0

[slouken]

@madebr can correct me if I'm wrong here, but /usr/local by definition is not part of the standard system path and should be added manually if desired.

[madebr]

@madebr can correct me if I'm wrong here, but /usr/local by definition is not part of the standard system path and should be added manually if desired.

Yes, that's what we're currently doing for FreeBSD

SDL/.github/workflows/create-test-plan.py

Lines 706 to 709 in 4fd0b2a

	job.cmake_arguments.extend((
	"-DSDL_CHECK_REQUIRED_INCLUDES=/usr/local/include",
	"-DSDL_CHECK_REQUIRED_LINK_OPTIONS=-L/usr/local/lib",
	))

[madebr]

@Gpinchon

Let's say you want to create a pure X11 application on FreeBSD.
What does the following output when configuring with CMake?

cmake_minimum_required(VERSION 3.16)
project(x11_app C)
find_package(X11 REQUIRED)
message(STATUS "X11_INCLUDE_DIR: \"${X11_INCLUDE_DIR}\"")
message(STATUS "X11_LIBRARIES:   \"${X11_LIBRARIES}\"")

[Gpinchon]

@Gpinchon

Let's say you want to create a pure X11 application on FreeBSD. What does the following output when configuring with CMake?

cmake_minimum_required(VERSION 3.16)
project(x11_app C)
find_package(X11 REQUIRED)
message(STATUS "X11_INCLUDE_DIR: "${X11_INCLUDE_DIR}"")
message(STATUS "X11_LIBRARIES: "${X11_LIBRARIES}"")

Hey, I don't have a FreeBSD on hand right now, but I encountered the issue on Ubuntu through WSL.
I switched to OpenSUSE Tumbleweed since then and everything compiles fine on there.
When I tried doing what you say on Ubuntu it gave me lots of static libraries wherease it just gives me 2 dynamic libraries (libX11.so and libXext.so) on OpenSUSE.
Also turns out the include path was not the issue for me.