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Make defaults sensible for windows, fix program finding. #5

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Make defaults sensible for windows, fix program finding. #5

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ceee985
Make defaults sensible on windows
MHebes Jul 15, 2024
952b8eb
Mention generator issue in README for windows
MHebes Jul 15, 2024
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9 changes: 9 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,15 @@ Compile Arduino AVR programs using CMake.
```
Customize the port, toolchain file, and build type for your specific
configuration.

On windows you will need to use a generator other than Visual Studio such Ninja:
```sh
cmake -S. -Bbuild \
-D ARDUINO_PORT=COM1 \
-D CMAKE_TOOLCHAIN_FILE=cmake/toolchain/uno.toolchain.cmake \
-D CMAKE_BUILD_TYPE=MinSizeRel \
-G Ninja
```
4. Finally, build and upload the example “blink” program:
```sh
cmake --build build -j -t upload-blink
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28 changes: 17 additions & 11 deletions cmake/toolchain/avr.toolchain.cmake
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Expand Up @@ -3,8 +3,14 @@ set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_SYSTEM_PROCESSOR avr)

# User settings with sensible defaults
set(ARDUINO_PATH "$ENV{HOME}/.arduino15/packages/arduino" CACHE PATH
if(CMAKE_HOST_WIN32)
set(ARDUINO_PATH_DEFAULT "$ENV{LOCALAPPDATA}/Arduino15/packages/arduino")
else()
set(ARDUINO_PATH_DEFAULT "$ENV{HOME}/.arduino15/packages/arduino")
endif()
set(ARDUINO_PATH "${ARDUINO_PATH_DEFAULT}" CACHE PATH
"Path of the Arduino packages folder, e.g. ~/.arduino15/packages/arduino.")

set(ARDUINO_CORE_VERSION "1.8.6" CACHE STRING
"Version of arduino/ArduinoCore-AVR")
set(AVR_GCC_VERSION "7.3.0-atmel3.6.1-arduino7" CACHE STRING
Expand All @@ -22,16 +28,16 @@ set(ARDUINO_AVRDUDE_PATH ${ARDUINO_PATH}/tools/avrdude/${AVRDUDE_VERSION})
set(ARDUINO_AVRDUDE_CONF ${ARDUINO_AVRDUDE_PATH}/etc/avrdude.conf)

# Toolchain paths
set(CMAKE_C_COMPILER ${ARDUINO_TOOLS_PATH}/avr-gcc CACHE FILEPATH
"Path to avr-gcc" FORCE)
set(CMAKE_CXX_COMPILER ${ARDUINO_TOOLS_PATH}/avr-g++ CACHE FILEPATH
"Path to avr-g++" FORCE)
set(CMAKE_OBJCOPY ${ARDUINO_TOOLS_PATH}/avr-objcopy CACHE FILEPATH
"Path to avr-objcopy" FORCE)
set(CMAKE_SIZE ${ARDUINO_TOOLS_PATH}/avr-size CACHE FILEPATH
"Path to avr-size" FORCE)
set(ARDUINO_AVRDUDE ${ARDUINO_AVRDUDE_PATH}/bin/avrdude CACHE FILEPATH
"Path to avrdude" FORCE)
find_program(CMAKE_C_COMPILER avr-gcc PATHS "${ARDUINO_TOOLS_PATH}" NO_DEFAULT_PATH
DOC "Path to avr-gcc")
find_program(CMAKE_CXX_COMPILER avr-g++ PATHS "${ARDUINO_TOOLS_PATH}" NO_DEFAULT_PATH
DOC "Path to avr-g++")
find_program(CMAKE_OBJCOPY avr-objcopy PATHS "${ARDUINO_TOOLS_PATH}" NO_DEFAULT_PATH
DOC "Path to avr-objcopy")
find_program(CMAKE_SIZE avr-size PATHS "${ARDUINO_TOOLS_PATH}" NO_DEFAULT_PATH
DOC "Path to avr-size")
find_program(ARDUINO_AVRDUDE avrdude PATHS "${ARDUINO_AVRDUDE_PATH}/bin" NO_DEFAULT_PATH
DOC "Path to avrdude")

# Only look libraries etc. in the sysroot, but never look there for programs
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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