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################################################################################
# Configure CMake and setup variables for the Nios II environment
#
# Inputs:
# QUARTUS_ROOTDIR Path to Quartus Prime installation.
#
#
################################################################################
cmake_minimum_required(VERSION 3.5)
if(NOT "$ENV{QUARTUS_ROOTDIR}" STREQUAL "")
set(QUARTUS_ROOTDIR "$ENV{QUARTUS_ROOTDIR}")
endif()
# There seems to be some known strange behavior where CMake loses track of
# cached variables when (re)parsing toolchain files. This is a workaround
# identified in http://stackoverflow.com/questions/28613394/check-cmake-cache-variable-in-toolchain-file
if(QUARTUS_ROOTDIR)
# Use the environment to back up this definition, per that above workaround
set(ENV{_QUARTUS_ROOTDIR} "${QUARTUS_ROOTDIR}")
else()
if(NOT "$ENV{_QUARTUS_ROOTDIR}" STREQUAL "")
# Use the definition we backed up in the environment.
set(QUARTUS_ROOTDIR "$ENV{_QUARTUS_ROOTDIR}")
endif()
endif()
if("${QUARTUS_ROOTDIR}" STREQUAL "")
message(FATAL_ERROR "QUARTUS_ROOTDIR not defined")
else()
message(STATUS "QUARTUS_ROOTDIR = ${QUARTUS_ROOTDIR}")
endif()
################################################################################
# CMake toolchain file configuration
################################################################################
find_program(CMAKE_C_COMPILER nios2-elf-gcc ${QUARTUS_ROOTDIR}/nios2eds/)
find_program(CMAKE_CXX_COMPILER nios2-elf-g++ ${QUARTUS_ROOTDIR}/nios2eds/)
set(CMAKE_C_COMPILER_WORKS 1)
set(CMAKE_CXX_COMPILER_WORKS 1)
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_SYSTEM_PROCESSOR nios2)
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)
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