File fix-riscv.patch of Package panda3d

diff --git a/dtool/src/dtoolbase/dtool_platform.h b/dtool/src/dtoolbase/dtool_platform.h
index ad2f857..e9dfa59 100644
--- a/dtool/src/dtoolbase/dtool_platform.h
+++ b/dtool/src/dtoolbase/dtool_platform.h
@@ -77,6 +77,9 @@
 #elif defined(__arm__)
 #define DTOOL_PLATFORM "linux_arm"
 
+#elif defined(__riscv)
+#define DTOOL_PLATFORM "linux_riscv"
+
 #elif defined(__ppc__)
 #define DTOOL_PLATFORM "linux_ppc"
 
diff --git a/makepanda/makepanda.py b/makepanda/makepanda.py
index 17699c3..30b4642 100755
--- a/makepanda/makepanda.py
+++ b/makepanda/makepanda.py
@@ -1657,7 +1657,7 @@ def CompileCxx(obj,src,opts):
                 if optlevel >= 4 or target == "android":
                     cmd += " -fno-rtti"
 
-        if ('SSE2' in opts or not PkgSkip("SSE2")) and not arch.startswith("arm") and arch != 'aarch64':
+        if ('SSE2' in opts or not PkgSkip("SSE2")) and arch.find('86') > 0:
             cmd += " -msse2"
 
         # Needed by both Python, Panda, Eigen, all of which break aliasing rules.