Re: [CMake] CMakeLists.txt in different place than source

2018-06-13 Thread J Decker 
On Wed, Jun 13, 2018 at 9:46 PM Andrew White 
wrote:

> J Decker wrote:
>
> You can define a variable to define the base of the sources
>
> set( SOURCE_ROOT /some/path )
>
>
>
> could be set relative to the current cmake path per cmake that uses those
>
> souces... and then just prefix it
>
>
>
> add_library(my_lib
>
> ${SOURCE_ROOT}/src/a.c
>
> ${SOURCE_ROOT}/include/a.h
>
> )
>
>
>
> Thanks, but that’s approximately exactly what I’m trying to avoid doing.
> I cheat a little, in that I have a macro that will prepend a prefix to
> every element of a list.  My motivation is avoiding situations where I add
> the prefix to the files but forget to add the prefix when I call
> target_include_directories or suchlike.
>
>
>
> I’m not sure anything trickier is workable in the CMake model, however.
> For example, hacking CMAKE_CURRENT_SOURCE_DIR might make sense for file
> paths, but if I then call add_subdirectory should it be rooted at the
> CMakeList directory or the source root directory.
>
>
>
CMAKE_CURRENT_LIST_DIR
https://stackoverflow.com/questions/15662497/difference-between-cmake-current-source-dir-and-cmake-current-list-dir

yes that's an option also.
It will be pretty clear there's an error if something is omitted later;
and/or referenced from a different place.
 and then it's not just a matter of


> --
>
> Andrew
>
>
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Re: [CMake] CMakeLists.txt in different place than source

2018-06-13 Thread Andrew White 
J Decker wrote:

You can define a variable to define the base of the sources

set( SOURCE_ROOT /some/path )



could be set relative to the current cmake path per cmake that uses those

souces... and then just prefix it



add_library(my_lib

${SOURCE_ROOT}/src/a.c

${SOURCE_ROOT}/include/a.h

)



Thanks, but that’s approximately exactly what I’m trying to avoid doing.  I 
cheat a little, in that I have a macro that will prepend a prefix to every 
element of a list.  My motivation is avoiding situations where I add the prefix 
to the files but forget to add the prefix when I call 
target_include_directories or suchlike.



I’m not sure anything trickier is workable in the CMake model, however.  For 
example, hacking CMAKE_CURRENT_SOURCE_DIR might make sense for file paths, but 
if I then call add_subdirectory should it be rooted at the CMakeList directory 
or the source root directory.



--

Andrew


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Re: [CMake] CMakeLists.txt in different place than source

2018-06-13 Thread J Decker 
On Tue, Jun 12, 2018 at 7:22 PM Andrew White 
wrote:

> I have a situation where I want my CMakeLists.txt in a different place
> than my source.
>
> e.g.:
>
> /some/path/project/CMakeLists.txt
> /other/path/source/src/a.c
> /other/path/source/include/a.h
>
> Is there an easy way to say "process this CMakeLists.txt as if it were in
> /other/path/source" (at least as far as file paths are concerned)?
>
> e.g.:
>
> add_library(my_lib
> src/a.c
> include/a.h
> )
>
> target_include_directories(my_lib PUBLIC include)
>
> I know I can add a full path prefix to every file, but there are a lot of
> them.  I'm hoping for a shortcut.
>

You can define a variable to define the base of the sources
set( SOURCE_ROOT /some/path )

could be set relative to the current cmake path per cmake that uses those
souces... and then just prefix it

add_library(my_lib
${SOURCE_ROOT}/src/a.c
${SOURCE_ROOT}/include/a.h
)



>
> --
> Andrew
>
>
> --
>
> Powered by www.kitware.com
>
> Please keep messages on-topic and check the CMake FAQ at:
> http://www.cmake.org/Wiki/CMake_FAQ
>
> Kitware offers various services to support the CMake community. For more
> information on each offering, please visit:
>
> CMake Support: http://cmake.org/cmake/help/support.html
> CMake Consulting: http://cmake.org/cmake/help/consulting.html
> CMake Training Courses: http://cmake.org/cmake/help/training.html
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
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>
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[CMake] CMakeLists.txt in different place than source

2018-06-12 Thread Andrew White 
I have a situation where I want my CMakeLists.txt in a different place than my 
source.

e.g.:

/some/path/project/CMakeLists.txt
/other/path/source/src/a.c
/other/path/source/include/a.h

Is there an easy way to say "process this CMakeLists.txt as if it were in 
/other/path/source" (at least as far as file paths are concerned)?

e.g.:

add_library(my_lib
src/a.c
include/a.h
)

target_include_directories(my_lib PUBLIC include)

I know I can add a full path prefix to every file, but there are a lot of them. 
 I'm hoping for a shortcut.

--
Andrew


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