Add support for the RISC-V architecture

Supports RV64GC (RISC-V 64-bit with general-purpose and compressed-instruction extensions)

1 files changed, 7 insertions, 0 deletions

diff --git a/platform/linuxbsd/detect.py b/platform/linuxbsd/detect.py
index 1b9dd1e8f3..4b3804d049 100644
--- a/platform/linuxbsd/detect.py
+++ b/platform/linuxbsd/detect.py
@@ -119,6 +119,13 @@ def configure(env):
     if env["bits"] == "default":
         env["bits"] = "64" if is64 else "32"
 
+    if env["arch"] == "" and platform.machine() == "riscv64":
+        env["arch"] = "rv64"
+
+    if env["arch"] == "rv64":
+        # G = General-purpose extensions, C = Compression extension (very common).
+        env.Append(CCFLAGS=["-march=rv64gc"])
+
     ## Compiler configuration
 
     if "CXX" in env and "clang" in os.path.basename(env["CXX"]):