[cmake-developers] Modifying RPATH feature to run tests uninstalled

[Stephen Kelly]

Marcel Loose wrote:

> Hi Stephen,
> 
> On Fri, 2012-02-17 at 12:06 +0100, Stephen Kelly wrote:
> 
> -- 8< ---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ---- 8< --
> 
>> diff --git a/templates/tests/CMakeLists.txt
> b/templates/tests/CMakeLists.txt
>> index d2e37d2..ad471c7 100644
>> --- a/templates/tests/CMakeLists.txt
>> +++ b/templates/tests/CMakeLists.txt
>> @@ -83,6 +83,7 @@ macro(GRANTLEE_TEMPLATES_UNIT_TESTS)
>>                    ${_testresource_rcc_src}
>>      )
>>      add_test(${_testname} ${_testname}_exec )
>> +    set_property(TEST ${testname} PROPERTY ENVIRONMENT
>> "LD_LIBRARY_PATH=${CMAKE_BINARY_DIR}/templates/lib")
>> 
>> 
>> Do you see anything wrong there?
> 
> You should use ${_testname} in the set_property() command. Don't you get
> an error message from CMake? Or do you happen to have a variable
> "testname" as well.
> 

D'Oh! You're right. I typo'd there. It works with my system Qt if I fix the 
typo.

However, it doesn't solve the whole problem for me. Mostly I use a Qt in a 
non-standard prefix and I set LD_LIBRARY_PATH to find it (I have many Qts 
and a script to change my environment)

I tried changing it to 
    set_property(TEST ${_testname} PROPERTY ENVIRONMENT 
"LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${CMAKE_BINARY_DIR}/templates/lib")

ie appending to the LD_LIBRARY_PATH, and it didn't find the correct Qt. It 
found my system Qt (4.7) instead of my environment Qt (4.8) which has new 
methods and so I get symbol lookup errors.

Is that something relevant for others that we should care about? Or is my 
setup unusual and irrelevant? Is it a bug that the LD_LIBRARY_PATH from my 
environment is not carried over?

Thanks,

Steve.