opencv/platforms/linux/riscv64-gcc.toolchain.cmake

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_VERSION 1)
set(GNU_MACHINE riscv64-unknown-linux-gnu CACHE STRING "GNU compiler triple")

if(NOT DEFINED CMAKE_CXX_FLAGS)  # guards toolchain multiple calls
  set(CMAKE_C_FLAGS "-march=rv64gc")
  set(CMAKE_CXX_FLAGS "-march=rv64gc")
endif()

include("${CMAKE_CURRENT_LIST_DIR}/riscv-gnu.toolchain.cmake")
Added RISC-V backend of universal intrinsics 4 years ago			`set(CMAKE_SYSTEM_NAME Linux)`
cmake: fix RISC-V toolchains - RVV options are moved to configuration scripts instead of toolchains 2 years ago			`set(CMAKE_SYSTEM_VERSION 1)`
			`set(GNU_MACHINE riscv64-unknown-linux-gnu CACHE STRING "GNU compiler triple")`
Added RISC-V backend of universal intrinsics 4 years ago
cmake: fix RISC-V toolchains - RVV options are moved to configuration scripts instead of toolchains 2 years ago			`if(NOT DEFINED CMAKE_CXX_FLAGS) # guards toolchain multiple calls`
			`set(CMAKE_C_FLAGS "-march=rv64gc")`
			`set(CMAKE_CXX_FLAGS "-march=rv64gc")`
Detect RISC-V compiler from PATH environment variable 2 years ago			`endif()`

cmake: fix RISC-V toolchains - RVV options are moved to configuration scripts instead of toolchains 2 years ago			`include("${CMAKE_CURRENT_LIST_DIR}/riscv-gnu.toolchain.cmake")`