dev-dotnet/gtk-sharp-2.99.3-r1 fails to compile

[Bigun]

gui-thread-check.c:90:1: warning: no previous prototype for 'mono_profiler_startup' [-Wmissing-prototypes]
90 | mono_profiler_startup (const char *desc)
| ^~~~~~~~~~~~~~~~~~~~~
gui-thread-check.c: In function 'mono_profiler_startup':
gui-thread-check.c:94:2: warning: implicit declaration of function 'mono_profiler_install'; did you mean 'mono_profiler_startup'? [-Wimplicit-function-declaration]
94 | mono_profiler_install (NULL, NULL);
| ^~~~~~~~~~~~~~~~~~~~~
| mono_profiler_startup
gui-thread-check.c:94:2: warning: nested extern declaration of 'mono_profiler_install' [-Wnested-externs]
gui-thread-check.c:95:2: warning: implicit declaration of function 'mono_profiler_install_enter_leave' [-Wimplicit-function-declaration]
95 | mono_profiler_install_enter_leave (simple_method_enter, NULL);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gui-thread-check.c:95:2: warning: nested extern declaration of 'mono_profiler_install_enter_leave' [-Wnested-externs]
gui-thread-check.c:96:2: warning: implicit declaration of function 'mono_profiler_set_events'; did you mean 'mono_profiler_startup'? [-Wimplicit-function-declaration]
96 | mono_profiler_set_events (MONO_PROFILE_ENTER_LEAVE);
| ^~~~~~~~~~~~~~~~~~~~~~~~
| mono_profiler_startup
gui-thread-check.c:96:2: warning: nested extern declaration of 'mono_profiler_set_events' [-Wnested-externs]
gui-thread-check.c:96:28: error: 'MONO_PROFILE_ENTER_LEAVE' undeclared (first use in this function)
96 | mono_profiler_set_events (MONO_PROFILE_ENTER_LEAVE);
| ^~~~~~~~~~~~~~~~~~~~~~~~
gui-thread-check.c:96:28: note: each undeclared identifier is reported only once for each function it appears in
make[4]: *** [Makefile:472: gui-thread-check.lo] Error 1
make[4]: Leaving directory '/var/tmp/portage/dev-dotnet/gtk-sharp-2.99.3-r1/work/gtk-sharp-2.99.3/gtk/gui-thread-check/profiler'
make[3]: *** [Makefile:389: all-recursive] Error 1
make[3]: Leaving directory '/var/tmp/portage/dev-dotnet/gtk-sharp-2.99.3-r1/work/gtk-sharp-2.99.3/gtk/gui-thread-check'
make[2]: *** [Makefile:605: all-recursive] Error 1
make[2]: Leaving directory '/var/tmp/portage/dev-dotnet/gtk-sharp-2.99.3-r1/work/gtk-sharp-2.99.3/gtk'
make[1]: *** [Makefile:451: all-recursive] Error 1
make[1]: Leaving directory '/var/tmp/portage/dev-dotnet/gtk-sharp-2.99.3-r1/work/gtk-sharp-2.99.3'
make: *** [Makefile:379: all] Error 2

Looks like it's been addressed already in the mono/gtk-sharp hub, the e-build just needs to be updated, see below:

mono/gtk-sharp@c1b9bd4