From d373407bcb417c616c7d2f99edb005029ba63db5 Mon Sep 17 00:00:00 2001
From: nihui <shuizhuyuanluo@126.com>
Date: Sun, 29 May 2022 20:50:35 +0800
Subject: [PATCH] add c906 c910 v240 toolchain

---
 toolchains/c906-v240.toolchain.cmake | 33 ++++++++++++++++++++++++++++
 toolchains/c910-v240.toolchain.cmake | 33 ++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+)
 create mode 100644 toolchains/c906-v240.toolchain.cmake
 create mode 100644 toolchains/c910-v240.toolchain.cmake

diff --git a/toolchains/c906-v240.toolchain.cmake b/toolchains/c906-v240.toolchain.cmake
new file mode 100644
index 000000000..6cdd16684
--- /dev/null
+++ b/toolchains/c906-v240.toolchain.cmake
@@ -0,0 +1,33 @@
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR riscv64)
+set(C906 True)
+
+if(DEFINED ENV{RISCV_ROOT_PATH})
+    file(TO_CMAKE_PATH $ENV{RISCV_ROOT_PATH} RISCV_ROOT_PATH)
+else()
+    message(FATAL_ERROR "RISCV_ROOT_PATH env must be defined")
+endif()
+
+set(RISCV_ROOT_PATH ${RISCV_ROOT_PATH} CACHE STRING "root path to riscv toolchain")
+
+set(CMAKE_C_COMPILER "${RISCV_ROOT_PATH}/bin/riscv64-unknown-linux-gnu-gcc")
+set(CMAKE_CXX_COMPILER "${RISCV_ROOT_PATH}/bin/riscv64-unknown-linux-gnu-g++")
+
+set(CMAKE_FIND_ROOT_PATH "${RISCV_ROOT_PATH}/riscv64-unknown-linux-gnu")
+
+set(CMAKE_SYSROOT "${RISCV_ROOT_PATH}/sysroot")
+
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+
+set(CMAKE_C_FLAGS "-march=rv64gcv0p7_zfh_xtheadc -mabi=lp64d -mtune=c906 -DC906=1 -static")
+set(CMAKE_CXX_FLAGS "-march=rv64gcv0p7_zfh_xtheadc -mabi=lp64d -mtune=c906 -DC906=1 -static")
+
+# cache flags
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}" CACHE STRING "c flags")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" CACHE STRING "c++ flags")
+
+# export RISCV_ROOT_PATH=/home/nihui/osd/Xuantie-900-gcc-linux-5.10.4-glibc-x86_64-V2.4.0
+# cmake -DCMAKE_TOOLCHAIN_FILE=../toolchains/c906-v240.toolchain.cmake -DCMAKE_BUILD_TYPE=release -DNCNN_BUILD_TESTS=ON -DNCNN_OPENMP=OFF -DNCNN_THREADS=OFF -DNCNN_RUNTIME_CPU=OFF -DNCNN_RVV=ON -DNCNN_SIMPLEOCV=ON -DNCNN_BUILD_EXAMPLES=ON ..
diff --git a/toolchains/c910-v240.toolchain.cmake b/toolchains/c910-v240.toolchain.cmake
new file mode 100644
index 000000000..9d845f90f
--- /dev/null
+++ b/toolchains/c910-v240.toolchain.cmake
@@ -0,0 +1,33 @@
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR riscv64)
+set(C906 True)
+
+if(DEFINED ENV{RISCV_ROOT_PATH})
+    file(TO_CMAKE_PATH $ENV{RISCV_ROOT_PATH} RISCV_ROOT_PATH)
+else()
+    message(FATAL_ERROR "RISCV_ROOT_PATH env must be defined")
+endif()
+
+set(RISCV_ROOT_PATH ${RISCV_ROOT_PATH} CACHE STRING "root path to riscv toolchain")
+
+set(CMAKE_C_COMPILER "${RISCV_ROOT_PATH}/bin/riscv64-unknown-linux-gnu-gcc")
+set(CMAKE_CXX_COMPILER "${RISCV_ROOT_PATH}/bin/riscv64-unknown-linux-gnu-g++")
+
+set(CMAKE_FIND_ROOT_PATH "${RISCV_ROOT_PATH}/riscv64-unknown-linux-gnu")
+
+set(CMAKE_SYSROOT "${RISCV_ROOT_PATH}/sysroot")
+
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+
+set(CMAKE_C_FLAGS "-march=rv64gcxtheadc -mabi=lp64d -mtune=c910 -DC906=1 -static")
+set(CMAKE_CXX_FLAGS "-march=rv64gcxtheadc -mabi=lp64d -mtune=c910 -DC906=1 -static")
+
+# cache flags
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}" CACHE STRING "c flags")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" CACHE STRING "c++ flags")
+
+# export RISCV_ROOT_PATH=/home/nihui/osd/Xuantie-900-gcc-linux-5.10.4-glibc-x86_64-V2.4.0
+# cmake -DCMAKE_TOOLCHAIN_FILE=../toolchains/c910-v240.toolchain.cmake -DCMAKE_BUILD_TYPE=release -DNCNN_BUILD_TESTS=ON -DNCNN_OPENMP=ON -DNCNN_RUNTIME_CPU=OFF -DNCNN_RVV=OFF -DNCNN_SIMPLEOCV=ON -DNCNN_BUILD_EXAMPLES=ON ..