Simple CTest coverage project + script

CMakeLists.txt

cmake_minimum_required(VERSION 3.9)
project(cmake_coverage)

file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/main.c" "int main() {return 0;}")

add_executable(main
    main.c
    )

target_compile_options(main
    PUBLIC
        "-O0"
        "-fprofile-arcs"
        "-ftest-coverage"
    )

target_link_libraries(main
    gcov
    )

include(CTest)
enable_testing()

add_test(NAME test
    COMMAND main
    )

CTestConfig.cmake

set(CTEST_PROJECT_NAME "Simple ctest_coverage project")

problem.txt

# This command succeeds
$ ls && mkdir build && cd build && cmake .. && make && make test && make ExperimentalCoverage && cd ..
CMakeLists.txt  CTestConfig.cmake  test.ctest
-- The C compiler identification is GNU 7.2.1
-- The CXX compiler identification is GNU 7.2.1
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /home/maarten/programming/minumum_examples/cmake_coverage/build
Scanning dependencies of target main
[ 50%] Building C object CMakeFiles/main.dir/main.c.o
[100%] Linking C executable main
[100%] Built target main
Running tests...
Test project /home/maarten/programming/minumum_examples/cmake_coverage/build
    Start 1: test
1/1 Test #1: test .............................   Passed    0.00 sec

100% tests passed, 0 tests failed out of 1

Total Test time (real) =   0.00 sec
Scanning dependencies of target ExperimentalCoverage
   Site: maarten-acer
   Build name: Linux-c++
Create new tag: 20171028-0543 - Experimental
Performing coverage
   Processing coverage (each . represents one file):
    .
   Accumulating results (each . represents one file):
    .
	Covered LOC:         1
	Not covered LOC:     0
	Total LOC:           1
	Percentage Coverage: 100.00%
Built target ExperimentalCoverage

# This command fails
$ ctest -S test.ctest 
   Each . represents 1024 bytes of output
    . Size of output: 0K
   Each symbol represents 1024 bytes of output.
   '!' represents an error and '*' a warning.
    . Size of output: 0K
Cannot find file: /home/maarten/programming/minumum_examples/cmake_coverage/build/ctest/Testing/CoverageInfo/main.c

# Why is that?

test.ctest

set(CTEST_SOURCE_DIRECTORY "${CTEST_SCRIPT_DIRECTORY}")
set(CTEST_BINARY_DIRECTORY "${CTEST_SCRIPT_DIRECTORY}/build/ctest")

ctest_empty_binary_directory("${CTEST_BINARY_DIRECTORY}")

set(CTEST_SITE "${CMAKE_SYSTEM_NAME}")
set(CTEST_BUILD_NAME "experimental build")

set(CTEST_CMAKE_GENERATOR "Ninja")
set(CTEST_COVERAGE_COMMAND "gcov")

ctest_start("Experimental")
ctest_configure()
ctest_build()
ctest_test()
ctest_coverage()

Is this still a problem?

Yep, i couldn't find solution