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Type 'pthread_cond_t' could not be resolved [message #1726718]

Tue, 15 March 2016 17:30

Eclipse User

I am experimenting with cross compiling for ARM-Linux under Windows using Eclipse-Mars. My set-up is as follows:

I have knocked up a small 'C project using 'pthreads' which compiles under Eclipse and runs successfully on the Pi.

My problem is that Eclipse shows a number of errors in its Problems TAB to do with Linux's threads:

My 'C source code includes a reference to #include <pthread.h>.

pthread.h lives in directory /SysGCC/Raspberry/arm-linux-gnueabihf/sysroot/usr/include and is referenced in my Eclipse Project Explorer Includes as shown:

index.php/fa/25318/0/

Cross GCC Compiler settings are to use g++ with -std=c++11 -O0 -g3 -Wall -c -fmessage-length=0.

Cross G++ Compiler settings to use g++ with -std=c++11 -O0 -g3 -Wall -c -fmessage-length=0.

In other words both are the same.

If I rename my source files from foo.c to foo.cpp and recompile, then the Eclipse errors disappear! This implies that Eclipse's C++ settings are correct, but its 'C settings are not??

If I manually add a specific reference to pthread.h in Eclipse's C/C++ Build -> Settings -> Cross GCC Compiler ->Includes then the errors disappear:

index.php/fa/25319/0/

Why do I need to explicitly reference pthread.h within Eclipse's C/C++ Build -> Settings -> Cross GCC Compiler ->Includes in order to keep Eclipse happy?

Attachment: Eclipse Project Explorer.jpg
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Attachment: Eclipse C C++ Settings.jpg
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