Using C++ standard libraries

RE: Using C++ standard libraries

Felix41382 — Wed, 24 Nov 2021 19:32:18 GMT

With SDK v1.7.0 I had to add:

target_link_libraries(app PRIVATE
	stdc++
	)

RE: Using C++ standard libraries

KevinG — Tue, 29 Sep 2020 16:45:06 GMT

I can confirm this does indeed fix the problem. Simply added it to the Makefile:

# Libraries common to all targets
LIB_FILES += -lstdc++ \

Thanks Trish!

-KevinG

RE: Using C++ standard libraries

trish — Wed, 25 Oct 2017 04:43:05 GMT

I solved this by adding -lstdc++ to lib files in the makefile, making sure lib files was in the makefile before linker flags

RE: Using C++ standard libraries

trish — Tue, 24 Oct 2017 20:34:25 GMT

Jorgen - can you post a link to the makefile and main.ccp you were able to compile? I am having the same issue, cannot get stdlib to link

RE: Using C++ standard libraries

ishgum — Tue, 19 Sep 2017 20:43:30 GMT

I'm definitely compiling as C++ as I am using classes etc in the files. Did you try actually creating a vector object? I can include the library but I get these errors when I try to make a vector.

I am using SDK 13.

RE: Using C++ standard libraries

Jørgen Holmefjord — Tue, 19 Sep 2017 14:14:34 GMT

Are you sure you are compiling the file as C++? I tested adding the STL vector library to a project in SDK 14 and changed the main.c file into main.cpp (and changed this in the Makefile as well). I see no issues with compiling the file. Which SDK version are you using?

RE: Using C++ standard libraries

ishgum — Mon, 18 Sep 2017 02:12:57 GMT

That got rid of those errors but replaces it with an undefined reference to '__cxa_begin_catch' and some other similar ones. Here is the terminal output:

/Users/michaelmcadam/SDK/Nordic_nf52/gcc-arm-none-eabi-6.3.1/arm-none-eabi/include/c++/6.3.1/bits/vector.tcc:427: undefined reference to `__cxa_begin_catch'
/Users/michaelmcadam/SDK/Nordic_nf52/gcc-arm-none-eabi-6.3.1/arm-none-eabi/include/c++/6.3.1/bits/vector.tcc:434: undefined reference to `__cxa_rethrow'
/Users/michaelmcadam/SDK/Nordic_nf52/gcc-arm-none-eabi-6.3.1/arm-none-eabi/include/c++/6.3.1/bits/vector.tcc:427: undefined reference to `__cxa_end_catch'
/Users/michaelmcadam/SDK/Nordic_nf52/gcc-arm-none-eabi-6.3.1/arm-none-eabi/include/c++/6.3.1/bits/vector.tcc:427: undefined reference to `__cxa_end_cleanup'

RE: Using C++ standard libraries

Jørgen Holmefjord — Fri, 15 Sep 2017 13:51:01 GMT

How about this suggestion?

RE: Using C++ standard libraries

ishgum — Thu, 14 Sep 2017 21:06:01 GMT

I set the -std=c++11 flag under CXXFLAGS to no effect. I also tried adding the linker flag -lstdc++ under LDFLAGS to no effect.

RE: Using C++ standard libraries

Jørgen Holmefjord — Thu, 14 Sep 2017 12:51:30 GMT

Another user had some similar issues when using Segger Embedded Studio. These were solved by setting the C++ standard to C++11. Could you try setting the flag -std=c++11 in your Makefile/GCC compilation?

RE: Using C++ standard libraries

ishgum — Wed, 13 Sep 2017 21:03:10 GMT

I am using GCC as my compiler, although my understanding is that it will automatically use the g++ compiler when working with a cpp file? (For reference, I have other .cpp files which are compiling fine, just can't use stdc++).

I tried passing the following:

CPPFLAGS += -I/${GCC_PATH}/arm-none-eabi/include LDFLAGS += -L/${GCC_PATH}/arm-none-eabi/lib LDLIBS += -lstdc++

But this ending up giving a massive amount of errors, so I figured it was the wrong direction.

Thanks for your help.

RE: Using C++ standard libraries

Jørgen Holmefjord — Wed, 13 Sep 2017 11:38:05 GMT

Which compiler are you using, and what flags are you passing to the compiler?