[CMake] How to get the evaluated path to a target - MSVC

[Steve Huston]

Thanks, David.
 
I put your ideas into the PowerShell script that sets up and runs my
tests. It's working...
 
-Steve

-----Original Message-----
From: cmake-bounces at cmake.org [mailto:cmake-bounces at cmake.org] On
Behalf Of David Cole
Sent: Saturday, May 23, 2009 7:38 AM
To: Dmitry Bely
Cc: cmake at cmake.org
Subject: Re: [CMake] How to get the evaluated path to a target - MSVC


Dmitry, your suggestion will not work. He's asking how to achieve this
from a wrapper script that he has written where $(OutDir) does not
evaluate in the context of the script... 

Steve, here's a technique that I use, but it has some caveats:
- it requires that the executable exist at the time of the script call
- it's a search for the exe in possible locations, so if multiple
exist, it's possible to get the "wrong" one

Anyhow, here it is:

# For an executable named "my"
#
# If you make this part of a cmake -P script, you will have to pass in
# CMAKE_BINARY_DIR and CMAKE_CONFIGURATION_TYPES with
# -D *before* the -P...
#
# If "my" does not exist in "bin" then find the first one that
# does exist in a configuration type subdir of "bin."
# my_CMAKE_CONFIGURATION_TYPES is a list of possible configuration
# types in "recommended" order. First existing one found wins.
#
SET(my_BASE_DIR "${CMAKE_BINARY_DIR}")
SET(my_CMAKE_CONFIGURATION_TYPES ${CMAKE_CONFIGURATION_TYPES})
#
# If you prefer a different search order than what is defined in
CMAKE_CONFIGURATION_TYPES,
# you may reorder them in my_CMAKE_CONFIGURATION_TYPES...

IF(NOT my_EXECUTABLE)
  SET(my_EXECUTABLE "${my_BASE_DIR}/bin/my${CMAKE_EXECUTABLE_SUFFIX}")
ENDIF(NOT my_EXECUTABLE)

IF(NOT EXISTS "${my_EXECUTABLE}")
  FOREACH(my_CONFIGURATION_TYPE ${my_CMAKE_CONFIGURATION_TYPES})
    IF(NOT EXISTS "${my_EXECUTABLE}")
    IF(EXISTS
"${my_BASE_DIR}/bin/${my_CONFIGURATION_TYPE}/my${CMAKE_EXECUTABLE_SUFF
IX}")
      SET(my_EXECUTABLE
"${my_BASE_DIR}/bin/${my_CONFIGURATION_TYPE}/my${CMAKE_EXECUTABLE_SUFF
IX}")
    ENDIF(EXISTS
"${my_BASE_DIR}/bin/${my_CONFIGURATION_TYPE}/my${CMAKE_EXECUTABLE_SUFF
IX}")
    ENDIF(NOT EXISTS "${my_EXECUTABLE}")
  ENDFOREACH(my_CONFIGURATION_TYPE)
ENDIF(NOT EXISTS "${my_EXECUTABLE}")

MESSAGE(STATUS "my_EXECUTABLE='${my_EXECUTABLE}'")


Good luck!

Hope this helps,
David



On Sat, May 23, 2009 at 2:35 AM, Dmitry Bely <dmitry.bely at gmail.com>
wrote:


On Fri, May 22, 2009 at 11:46 PM, Steve Huston <shuston at riverace.com>
wrote:
> Hi John,
>
> Thanks for replying.
>
>> On Fri, May 22, 2009 at 12:18 PM, Steve Huston
>> <shuston at riverace.com> wrote:
>> > I'm using cmake for some cross-platform Linux/Windows stuff. When
>> > ctest runs my tests, there is often the need to have a wrapper
script
>> > run the test - it sets up env variables (sometimes by reading the
>> > content of a file), runs the test, scans log files, runs
valgrind,
>> > etc. So, I'm passing the actual test exe name to the script, and
the
>> > script runs it at the proper time.
>> >
>> > This works fine on Linux. On Windows, however, I'm having a
problem
>> > getting the actual path - when I get the LOCATION property, it
has
>> > $(OutDir) embedded. Visual Studio can substitute this in if
> ctest/VS
>> > is directly executing the test. However, if passed to the wrapper
>> > script, the VS OutDir variable is not available. Is there a
portable
>> > way to get the test executable's path (either relative or
complete) so
>> > I can pass it to the wrapper script?
>>
>> Shouldn't you already know the path in your CMakeLists.txt?
>>
>> It should be somewhere off of
>> ${PROJECT_BINARY_DIR}
>
> "somewhere off of" is the operative phrase... Exactly where is what
I
> need to know. For example, in a Windows Debug build, it's in
> ${PROJECT_BINARY_DIR}\Debug.


Why not to use something like this:

if(MSVC_IDE)
 set(out_dir "$(OutDir)") # expanded by Visual Studio
else(MSVC_IDE)
 set(out_dir ${PROJECT_BINARY_DIR})
endif(MSVC_IDE)

Nmake generator (instead of Visual Studio one) could be another
option.

- Dmitry Bely

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