Missing glib::thread_supported symbols in libglibmm-2.4.dll.a

[mmmhj2]

Description / Steps to reproduce the issue

1. Install glibmm and dependencies with pacman -S mingw-w64-ucrt-x86_64-glibmm
2. Write and compile a simple program with g++ test.cpp $(pkg-config --cflags --libs glibmm-2.4)

#include <glibmm/thread.h>

int main() {	
	if (!Glib::thread_supported()) {
		Glib::thread_init();
	}
}

3. Linking failed with

D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
 D:\msys64\tmp\cc7HK0ft.o:test.cpp:(.text+0xe): undefined reference to `Glib::thread_supported()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/14.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
 D:\msys64\tmp\cc7HK0ft.o:test.cpp:(.text+0x1f): undefined reference to `Glib::thread_init(_GThreadF
unctions*)'

Further investigation shows that these symbols are missing from libglibmm-2.4.dll.a and libglibmm-2.4.dll but not libglibmm-2.4.a:

$ nm -C libglibmm-2.4.dll.a | grep supported
0000000000000000 I __imp__ZN4Glib6Module13get_supportedEv
0000000000000000 T Glib::Module::get_supported()
$ nm -C libglibmm-2.4.a | grep supported
00000000000001b0 T Glib::Module::get_supported()
                 U g_module_supported
0000000000000360 T Glib::thread_supported()

I crosschecked its presence on an WSL2 Ubuntu distro:

$ sudo apt install libgtkmm-3.0-dev
# ......
$ nm -gDC libglibmm-2.4.so | grep supported
                 U g_module_supported
0000000000050d10 T Glib::thread_supported()
0000000000047d30 T Glib::Module::get_supported()
$ g++ test.cpp `pkg-config --cflags --libs glibmm-2.4`
$ ./a.out
# Compiles and runs successfully.

I understand that multithreading can be difficult to port between different systems, and am not sure whether its absence is intended. But I suppose I'd better post it here to verify.

Expected behavior

Program compiles, links and runs successfully.

Actual behavior

Linking failed with undefined reference.

Verification

• [X] I have verified that my MSYS2 is up-to-date before submitting the report (see https://www.msys2.org/docs/updating/)

Windows Version

MINGW64_NT-10.0-19045

MINGW environments affected

• [ ] MINGW64
• [ ] MINGW32
• [X] UCRT64
• [ ] CLANG64
• [ ] CLANGARM64

Are you willing to submit a PR?

No response

[oltolm]

The current version of the package is 2.82 https://packages.msys2.org/base/mingw-w64-glibmm-2.68. You are using an outdated and unsupported package version.

[Biswa96]

You are using an outdated and unsupported package version.

glibmm is not unsupported versions. It's like gtk3 vs. gtk4 - same project but different API/ABI https://packages.msys2.org/search?q=glibmm

[tuanthien]

I ran into the same problem with https://packages.msys2.org/packages/mingw-w64-x86_64-glibmm trying to compile Ardour. Anyone know a workaround?

[Biswa96]

Please report it to upstream glibmm repository. I have asked about this issue in matrix.