fixes for rawhide

headerfix.patch

@@ -0,0 +1,11 @@
+diff -up PrusaSlicer-version_2.3.1-rc/src/libslic3r/Optimize/Optimizer.hpp.headerfix PrusaSlicer-version_2.3.1-rc/src/libslic3r/Optimize/Optimizer.hpp
+--- PrusaSlicer-version_2.3.1-rc/src/libslic3r/Optimize/Optimizer.hpp.headerfix	2021-04-19 11:00:28.489119086 -0400
++++ PrusaSlicer-version_2.3.1-rc/src/libslic3r/Optimize/Optimizer.hpp	2021-04-19 11:01:08.972462741 -0400
+@@ -8,6 +8,7 @@
+ #include <functional>
+ #include <limits>
+ #include <cassert>
++#include <optional>
+ 
+ namespace Slic3r { namespace opt {
+ 

prusa-slicer.spec

@@ -27,6 +27,14 @@ Source0:        https://github.com/prusa3d/PrusaSlicer/archive/version_%version%
 Source1:        %name.desktop
 Source2:        %name.appdata.xml
 
+# SIGSTKSZ/MINSIGSTKSZ are no longer constants in latest glibc
+# Additionally, catch (which is bundled here) was using it wrong
+# Updating to the single_header from 2.13.5 should resolve it
+Patch0:		catch2-MINSIGSTKSZ-no-longer-const.patch
+
+# PrusaSlicer-version_2.3.1-rc/src/libslic3r/Optimize/Optimizer.hpp:99:10: error: 'optional' in namespace 'std' does not name a template type
+Patch1:		headerfix.patch
+
 # Highly-parallel uild can run out of memory on PPC64le
 %ifarch ppc64le
 %global _smp_ncpus_max 8