support RISCV in property os

Check for RSICV preprocessor definitions in order to set OSPLAT appropriately.
boostorg · Oct 23, 2023 · 67ea63a · 67ea63a
1 parent 8d86b9a
commit 67ea63a
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/src/engine/jam.h b/src/engine/jam.h
@@ -442,6 +442,15 @@
     #define OSPLAT "OSPLAT=PARISC"
 #endif
 
+#if defined( __riscv ) || \
+    defined( __riscv__ )
+  #if 64 == __riscv_xlen
+    #define OSPLAT "OSPLAT=RISCV64"
+  #elif _32 == _riscv_xlen
+    #define OSPLAT "OSPLAT=RISCV32"
+  #endif
+#endif
+
 #ifndef OSPLAT
     #define OSPLAT ""
 #endif