[CMake] setup enviroment for all tests

[Jim Leek]

OK, the below suggestion did have one problem, but I was able to make it 
work.  The problem, kind of hinted at in David Cole's answer, was that, 
since the file is run at test time, variables defined at configure time 
don't work.  So, this did NOT work:

added to top level CMakeLists.txt:
set_directory_properties(PROPERTIES TEST_INCLUDE_FILE
   "${CMAKE_SOURCE_DIR}/cmake-modules/TestConfig.cmake")


TestConfig.cmake:
set(ENV{PATH} "${XXXX_BINDIR}:$ENV{PATH}")

because $XXXX_BINDIR was defined at configure time, and unfortunately 
wasn't defined at test time.

So, I had to generate a file as part of configure time.  So the entire 
fix was these two lines in the top level CMakeLists.txt
file(WRITE ${CMAKE_BINARY_DIR}/TestConfig.cmake "set(ENV{PATH} 
\"${XXXX_BINDIR}:\$ENV{PATH}\")\n")
set_directory_properties(PROPERTIES TEST_INCLUDE_FILE
   "${CMAKE_BINARY_DIR}/TestConfig.cmake")

this generated a TestConfig.cmake file like this:
set(ENV{PATH} "/usr/local/XXXX/bin:$ENV{PATH}")


Which works, so thanks!
Jim

On 07/31/2014 03:10 AM, David Cole wrote:
> CMake itself does this to include a file at ctest time that applies to
> *all* tests:
>
>    set_directory_properties(PROPERTIES
>      TEST_INCLUDE_FILE
>      "${CMake_BINARY_DIR}/Tests/EnforceConfig.cmake")
>
> It results in this line being generated in CTestTestfile.cmake at the
> very top of the file:
>
>     include("C:/n/d/Nightly/cmake
> Win32-ninja-cl11-Debug/Tests/EnforceConfig.cmake")
>
> If you wrote/configured a file that had this in it (can be in your
> build tree, as CMake's is...):
>
>    set(ENV{PATH} "/actual/value/of/XXXX_BINDIR:$ENV{PATH}")
>
> ...and then set that file as your TEST_INCLUDE_FILE, it should do what
> you want in this case.
>
> The documentation is sparse, but there:
>
>    http://www.cmake.org/cmake/help/v3.0/prop_dir/TEST_INCLUDE_FILE.html
>
>
> HTH,
> David C.
>
>
>