RF24 Arduino library fails to build

thirtythreeforty commented 9 years ago

I have run into an issue when trying to build the RF24 Arduino library. According to some other issues I've read, Arduino library dependencies are supposed to be detected automatically, but as far as I can tell that isn't happening correctly.

The output looks like this:

[georgev@shillig-arch firmware (master)]$ mdcd build
[georgev@shillig-arch build (master)]$ cmake ..
-- The C compiler identification is GNU 4.9.2
-- The CXX compiler identification is GNU 4.9.2
-- Arduino SDK version 1.0.6: /usr/share/arduino
-- Check for working C compiler: /usr/bin/avr-gcc
-- Check for working C compiler: /usr/bin/avr-gcc -- works

(snipped)

[ 88%] Building CXX object src/CMakeFiles/nano328_src.dir/blink.cpp.obj
[ 92%] Building CXX object src/CMakeFiles/nano328_src.dir/blink_lib.cpp.obj
Linking CXX static library libnano328_src.a
[ 92%] Built target nano328_src
Scanning dependencies of target blink_lib
[ 96%] Building CXX object src/CMakeFiles/blink_lib.dir/blink_lib.cpp.obj
Linking CXX static library libblink_lib.a
[ 96%] Built target blink_lib
Scanning dependencies of target blink
[100%] Building CXX object src/CMakeFiles/blink.dir/blink.cpp.obj
In file included from /home/georgev/classes/Senior Design/firmware/libraries/RF24/RF24.h:18:0,
                 from /home/georgev/classes/Senior Design/firmware/src/blink.cpp:2:
/home/georgev/classes/Senior Design/firmware/libraries/RF24/RF24_config.h:104:19: fatal error: SPI.h: No such file or directory
   #include <SPI.h>
                   ^
compilation terminated.
src/CMakeFiles/blink.dir/build.make:54: recipe for target 'src/CMakeFiles/blink.dir/blink.cpp.obj' failed
make[2]: *** [src/CMakeFiles/blink.dir/blink.cpp.obj] Error 1
CMakeFiles/Makefile2:92: recipe for target 'src/CMakeFiles/blink.dir/all' failed
make[1]: *** [src/CMakeFiles/blink.dir/all] Error 2
Makefile:76: recipe for target 'all' failed
make: *** [all] Error 2
[georgev@shillig-arch build (master)]$

My sample repository demonstrates the issue. You will have to run a recursive clone if you want a copy, as I'm pulling the dependencies (including this repository itself) in via submodules.

Am I doing something incorrectly, or is there an issue?

aditanase commented 9 years ago

Have you tried using link_directories to make sure the dependencies are loaded from the correct location? link_directories(/Users/$ENV{USER}/Documents/Arduino/libraries/)

Also, if a library has dependencies on standard libs, you may need to configure recursive scan of dependencies. In some of my sketches I needed this for the aJSON library. In your case, it might be: set(RF24_RECURSE True)

Both directives need to be placed after the project definition, before the generate_arduino_firmware call that needs the libs in question.

thirtythreeforty commented 8 years ago

I haven't messed with this in a while, but I seem to recall that I was doing something incorrectly. I'll close this if you don't mind.

queezythegreat / arduino-cmake

RF24 Arduino library fails to build #108