Eclipse does not recognize symbols when using arm-none-eabi-gcc compiler

[chr....@gmail.com]

• Windows 10 Version 1809
• Eclipse IDE for C/C++ Developers
  Version: 2019-06 (4.12.0)
  Build id: 20190614-1200
• cmake4eclipse 2.1.1
• cmake version 3.17.0
• GNU Make 4.2.1
  

repository for a simple example project: https://bitbucket.org/ChristianW/cmake_driven_example_arm-none-eabi-gcc/src/master/

When using the arm-none-eabi-gcc compiler, the Eclipse C/C++ Editor does not recognize my symbols set in the CMakeLists.txt.

...
if(1)
 set(CMAKE_C_COMPILER arm-none-eabi-gcc)
else()
 set(CMAKE_C_COMPILER gcc)
endif()
...

When using the gcc compiler, the Eclipse C/C++ Editor does recognize my symbols set in the CMakeLists.txt.

...
if(0)
 set(CMAKE_C_COMPILER arm-none-eabi-gcc)
else()
 set(CMAKE_C_COMPILER gcc)
endif()
...

Any ideas what's the problem here?

Kind regards,

Christian

[chr....@gmail.com]

Remark: in both cases building the project is working.

[chr....@gmail.com]

Apparently it was caused by the path to the compiler:

"...\IDE_V3.2.2.13\arm_tools\bin\arm-none-eabi-gcc.exe"

-> dots in the folder name IDE_V3.2.2.13

With moving arm_tools folder, the Eclipse Editor recognized the symbols.

It gave me these warnings: (in the sample project I have not defined the entry symbol Reset_Handler)

Thanks Martin for your hint. ;-)

[chr....@gmail.com]

Further problem:

The indexer was set to "Use a fixed build configuration".

That's why I could build in different configurations, but the Editor always showed the flag values of my specified configuration (=Debug).

It should be possible to use project specific (PS) indexer settings, but...

There is a bug within Eclipse which leads to an unintuitive behaviour of the indexer (see bug 205299):

• WS: Window > Preferences > C/C++ > Indexer > Build configuration for the indexer: Use the build configuration specified in the projects's indexer settings
• PS: Project Properties > C/C++ General > Indexer > User active build configuration

Solution: Use workspace specific (WS) indexer settings: Use active build configuration

[chr....@gmail.com]

If there is a whitespace " " in the path to the compiler, the Eclipse editor also does not recognize the symbols set in CMakeLists.txt.

set(CMAKE_C_COMPILER "C:/Users/cwalch1/Desktop/gcc-arm-none-eabi 8-2019-q3-update-win32/bin/arm-none-eabi-gcc.exe")

The warning is the same as described in my post on 8. July:

Without whitespaces it's working fine.

Conclusion:

- the path to the compiler must not contain whitespaces or dots.

- consider the Eclipse settings for the indexer (see prevoius post)