I've got the problem that my program will compile with g++10.2 and c++11 activated through cmake. but it will not compile with arduino dues arm-none-eabi-g++.exe compiler which also has c++11. The failure occurs because of one line that needs to be added for the arm compiler, but when I add that line to g++10.2 it won't compile.
So I need an #ifdef
or some alternative to activate and deactivate the line specific for the compiler.
Like Deumaudit said in the comments:
Try to use
__arm__
,__aarch64__
or__ARM_ARCH
macro
You'll probably be ok if you use #ifdef __arm__
or even #if defined(__arm__) || defined(__aarch64__)
#if defined(__arm__) || defined(__aarch64__)
If you're planning to add more supported platforms to your program, it might be a good idea to define some macros when building for a specific platform. I have my own _MY_APP_ARM
macro defined in my CMakeLists.txt:
if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "arm")
add_definitions(-D_MY_APP_ARM)
endif()
Which I can then use as #ifdef _MY_APP_ARM
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