mingw32-gtkmm3 from windows:mingw:win32 project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/windows:mingw:win32/openSUSE_Tumbleweed_ARM/windows:mingw:win32.repo zypper refresh zypper install mingw32-gtkmm3
Grab binary packages directly
Add repository and install manually
For openSUSE Leap 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/windows:mingw:win32/openSUSE_Leap_15.5/windows:mingw:win32.repo zypper refresh zypper install mingw32-gtkmm3
For openSUSE Leap 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/windows:mingw:win32/openSUSE_Leap_15.4/windows:mingw:win32.repo zypper refresh zypper install mingw32-gtkmm3