Function 'EXPECT_CALL' could not be resolv

Question

I am building this project: https://github.com/kaizouman/gtest-cmake-example

on ubuntu 15.10 using cmake, gtest and make. I have used cmake to build eclipse makefiles and project:

I can import the project into Eclipse Mars and it works for the most parts. But in one of the tests I get the following errors:

so some of the gtest macros, e.g. EXPECT_CALL cannot be found/resolved while others can be found e.g.: EXPECT_EQ

Further the function norf() implemented in: ibar.h in libfoo cannot be resolved either: Function 'norf' could not be resolved.

I have tried to refresh the project run make all but the errors persist.

It works fine when I run the make targets from command line (and also from inside eclipse), no compile errors:

[  4%] Built target libfoo
[  9%] Built target libbar
[ 14%] Built target myApp
[ 52%] Built target gmock
[ 90%] Built target gtest
[100%] Built target testfoo
[cmake-test] $ /bin/sh -xe /tmp/hudson4075531494849087103.sh
+ cd cmake-gtest/build
+ make all
[  4%] Built target libfoo
[  9%] Built target libbar
[ 14%] Built target myApp
[ 52%] Built target gmock
[ 90%] Built target gtest
[100%] Built target testfoo
+ make test
Running tests...
Test project /var/lib/jenkins/workspace/cmake-test/cmake-gtest/build
    Start 1: testfoo
1/1 Test #1: testfoo ..........................   Passed    0.01 sec

100% tests passed, 0 tests failed out of 1

Total Test time (real) =   0.01 sec
Finished: SUCCESS

So why the errors in the editor in eclipse?

Might be that I am missing something basic here but it seems strange that its only some parts that cannot be resolved. It also only seems to be related to eclipse integration.

Any suggestions?