I was trying to install gtkmm-4.0 and since my distro only ships gtkmm-3.0 I decided to build myself.
Installed all the dependencies from the official gtkmm installation website and gave it a go.
meson setup succeeded. But ninja failed with this error
error: ‘G_TEST_SUBPROCESS_DEFAULT’ undeclared
Tried searching this up but found literally 0 results. This looks like a glib include fail, since this macro is defined in the glib-2.0.
Any help could be appreciated.
