Re: [CMake] Return an Error Code (or something) from a CMake Script.

[FRamold]

Hi Michael,

you probably figured this out by now, but for future reference: You have to
log to stderr to make the script fail.

This example works (as in /does not build/ ;) ):

file(GENERATE OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/skript.cmake"
   CONTENT "message(FATAL_ERROR \"Script failed!!\")"
)
add_custom_target(runSkript
   COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/skript.cmake
)

btw: Using CMake 3.10

Greetings,
Felix



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Re: [CMake] Return an Error Code (or something) from a CMake Script.

[Michael Jackson]

-Original Message-
From: "Alan W. Irwin" <ir...@beluga.phys.uvic.ca>
Date: Monday, February 26, 2018 at 6:02 PM
To: Michael Jackson <mike.jack...@bluequartz.net>
Cc: CMake Mail List <cmake@cmake.org>
Subject: Re: [CMake] Return an Error Code (or something) from a CMake Script.

On 2018-02-26 14:19-0500 Michael Jackson wrote:

> In our CMake based project I generate a *.cmake file which I call with 
the following bit of code:
>
>  add_custom_target(DREAM3D_MKDOCS_GENERATION ALL
>COMMAND "${CMAKE_COMMAND}" -P "${docsCmakeFile}"
>COMMENT "using mkdocs to generate the documentation"
>  )
>
> Inside the generated file is the following cmake command:
>
>  message(STATUS "Starting mkdocs execution. This can take a while.")
>  execute_process(COMMAND "/path/to/mkdocs" build
>OUTPUT_VARIABLE mkdocs_gen_output
>RESULT_VARIABLE mkdocs_gen_result
>ERROR_VARIABLE mkdocs_gen_error
>WORKING_DIRECTORY 
"/Users/mjackson/DREAM3D-Dev/DREAM3D-Build/Debug/Documentation/mkdocs"
>)
>  message(STATUS "mkdocs_gen_result: ${mkdocs_gen_result}")
>  message(STATUS "mkdocs_gen_error: ${mkdocs_gen_error}")
>  message(STATUS 
"**")
>  message(STATUS "mkdocs_gen_output: ${mkdocs_gen_output}")
>  message(STATUS 
"**")
>
>
> The issue that I am having is that if the mkdocs command fails, the build 
does NOT show the failure. Is there a way to have the "cmake -P" command pick 
up the fact that the cmake script failed so that the build fails or throws a 
warning/error?

Hi Mike:

I think you already have a good specific answer to your question, but
just out of curiosity could this CMake script approach be replaced by
executing "/path/to/mkdocs" as the COMMAND in a custom command where
your DREAM3D_MKDOCS_GENERATION custom target DEPENDS on the OUTPUT of
that custom command?  Or are there reasons not to implement this more
usual custom command/custom target approach in this case?

Alan
__
Alan W. Irwin

Alan,
There was a lot in that .cmake file that I left out. In order for the 
mkdocs to work all of our documentation has to be in the same folder (At least 
it makes it much easier) so during cmake time we generate the file with about 
30~40 directory copy commands in it. We could do all of that in the mail cmake 
files but our project is starting to get overwhelmed with targets which makes 
opening it up on IDE's like Visual Studio and Xcode take a long time and the 
organization within those IDEs is frightful sometimes. So we factored out 
"copy" commands into a single file.

Mike Jackson


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Re: [CMake] Return an Error Code (or something) from a CMake Script.

[Alan W. Irwin]

On 2018-02-26 14:19-0500 Michael Jackson wrote:


In our CMake based project I generate a *.cmake file which I call with the 
following bit of code:

 add_custom_target(DREAM3D_MKDOCS_GENERATION ALL
   COMMAND "${CMAKE_COMMAND}" -P "${docsCmakeFile}"
   COMMENT "using mkdocs to generate the documentation"
 )

Inside the generated file is the following cmake command:

 message(STATUS "Starting mkdocs execution. This can take a while.")
 execute_process(COMMAND "/path/to/mkdocs" build
   OUTPUT_VARIABLE mkdocs_gen_output
   RESULT_VARIABLE mkdocs_gen_result
   ERROR_VARIABLE mkdocs_gen_error
   WORKING_DIRECTORY 
"/Users/mjackson/DREAM3D-Dev/DREAM3D-Build/Debug/Documentation/mkdocs"
   )
 message(STATUS "mkdocs_gen_result: ${mkdocs_gen_result}")
 message(STATUS "mkdocs_gen_error: ${mkdocs_gen_error}")
 message(STATUS 
"**")
 message(STATUS "mkdocs_gen_output: ${mkdocs_gen_output}")
 message(STATUS 
"**")


The issue that I am having is that if the mkdocs command fails, the build does NOT show 
the failure. Is there a way to have the "cmake -P" command pick up the fact 
that the cmake script failed so that the build fails or throws a warning/error?


Hi Mike:

I think you already have a good specific answer to your question, but
just out of curiosity could this CMake script approach be replaced by
executing "/path/to/mkdocs" as the COMMAND in a custom command where
your DREAM3D_MKDOCS_GENERATION custom target DEPENDS on the OUTPUT of
that custom command?  Or are there reasons not to implement this more
usual custom command/custom target approach in this case?

Alan
__
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state
implementation for stellar interiors (freeeos.sf.net); the Time
Ephemerides project (timeephem.sf.net); PLplot scientific plotting
software package (plplot.sf.net); the libLASi project
(unifont.org/lasi); the Loads of Linux Links project (loll.sf.net);
and the Linux Brochure Project (lbproject.sf.net).
__

Linux-powered Science
__
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Re: [CMake] Return an Error Code (or something) from a CMake Script.

[Eric Noulard]

cmake -P usually do the right thing. Here  you ignore the error because you
only message (STATUS ...)
Try adding message (ERROR ...) or message (FATAL_ERROR ...) when
execute_process producer error and tout custom command should faim.

Le 26 févr. 2018 20:19, "Michael Jackson"  a
écrit :

> In our CMake based project I generate a *.cmake file which I call with the
> following bit of code:
>
>   add_custom_target(DREAM3D_MKDOCS_GENERATION ALL
> COMMAND "${CMAKE_COMMAND}" -P "${docsCmakeFile}"
> COMMENT "using mkdocs to generate the documentation"
>   )
>
> Inside the generated file is the following cmake command:
>
>   message(STATUS "Starting mkdocs execution. This can take a while.")
>   execute_process(COMMAND "/path/to/mkdocs" build
> OUTPUT_VARIABLE mkdocs_gen_output
> RESULT_VARIABLE mkdocs_gen_result
> ERROR_VARIABLE mkdocs_gen_error
> WORKING_DIRECTORY "/Users/mjackson/DREAM3D-Dev/D
> REAM3D-Build/Debug/Documentation/mkdocs"
> )
>   message(STATUS "mkdocs_gen_result: ${mkdocs_gen_result}")
>   message(STATUS "mkdocs_gen_error: ${mkdocs_gen_error}")
>   message(STATUS "*
> *")
>   message(STATUS "mkdocs_gen_output: ${mkdocs_gen_output}")
>   message(STATUS "*
> *")
>
>
> The issue that I am having is that if the mkdocs command fails, the build
> does NOT show the failure. Is there a way to have the "cmake -P" command
> pick up the fact that the cmake script failed so that the build fails or
> throws a warning/error?
>
> Thanks
> Mike Jackson
>
>
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[CMake] Return an Error Code (or something) from a CMake Script.

[Michael Jackson]

In our CMake based project I generate a *.cmake file which I call with the 
following bit of code:

  add_custom_target(DREAM3D_MKDOCS_GENERATION ALL
COMMAND "${CMAKE_COMMAND}" -P "${docsCmakeFile}"
COMMENT "using mkdocs to generate the documentation"
  )

Inside the generated file is the following cmake command:

  message(STATUS "Starting mkdocs execution. This can take a while.")
  execute_process(COMMAND "/path/to/mkdocs" build
OUTPUT_VARIABLE mkdocs_gen_output
RESULT_VARIABLE mkdocs_gen_result
ERROR_VARIABLE mkdocs_gen_error
WORKING_DIRECTORY 
"/Users/mjackson/DREAM3D-Dev/DREAM3D-Build/Debug/Documentation/mkdocs"
)
  message(STATUS "mkdocs_gen_result: ${mkdocs_gen_result}")
  message(STATUS "mkdocs_gen_error: ${mkdocs_gen_error}")
  message(STATUS 
"**")
  message(STATUS "mkdocs_gen_output: ${mkdocs_gen_output}")
  message(STATUS 
"**")


The issue that I am having is that if the mkdocs command fails, the build does 
NOT show the failure. Is there a way to have the "cmake -P" command pick up the 
fact that the cmake script failed so that the build fails or throws a 
warning/error?

Thanks
Mike Jackson


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