Re: [CMake] using source files in build directory

[Johannes Zarl-Zierl]

Hi,

For header files, that's quite a normal thing to do - you just need to add the 
CMAKE_CURRENT_BINARY_DIR to your include directories.

For .cpp files, you can write your target so that it is referencing the source 
file in the binary directory. I.e.:

configure_file(
  ${CMAKE_CURRENT_SOURCE_DIRECTORY}/file1.cpp.in
  ${CMAKE_CURRENT_BINARY_DIRECTORY}/file1.cpp COPYONLY)
add_executable( target1 ${CMAKE_CURRENT_BINARY_DIRECTORY}/file1.cpp)

Is that sufficient for your needs?

If you rather need a real wildcard way to override arbitrary source files, 
then you're probably out of luck. You could still write a wrapper around 
add_executable and add_library that inspects source directory and binary 
directory, but that might not be worth the effort...

  Johannes

On Thursday 22 October 2015 15:13:08 Srinath Vadlamani wrote:
> Hello All,
>   I am aware of out-of-source builds.  I want to add modified source files
> to the out of source build directory and have CMake use these modified
> files.
> 
> Below is my example:
> $pwd
> 
> $ls
> CmakeLists.txt CMake README src tests doc ...
> $mkdir build1
> $cd build1
> $cp ../src/file1.cpp .
> $ 
> $ccmake  
> $make -j N
> $ 
> 
> Now I want to make another build directory that houses a few other modified
> files:
> 
> $cd 
> $mkdir build2
> $cd build2
> $cp ../src/file1.cpp . && cp ../src/file2.cpp .
> $
> $ccmake  
> $make -j N
> $ but file2 mods helped>
> 
> 
> . and so on.  The point is that the build directory allowing for
> modified source files helps preserve executables and the dependent source
> files for code management.  Some may now chime in with opinions on version
> control usage, but I'm trying to understand if it is possible to do what I
> described and is possible with Autotools.
> 
> Thank you for your time,
> <>Srinath
> 
> =
> Srinath Vadlamani
> =
> 
> On Thu, Oct 22, 2015 at 3:02 PM, Gonzalo  wrote:
> > El 21/10/15 a las 17:45, Srinath Vadlamani escribió:
> > 
> > Hello All,
> > 
> >   Is it possible to have CMake use source files in some particular order
> > 
> > that are placed in the out-of-source build directory?  This is allows for
> > the convenience of having multiple builds in different build directories
> > due to a few file changes while preserving the files themselves?
> > 
> > You are aware that you can do out of source builds, right?
> > 
> > $ mkdir build-linux64
> > $ cd build-linux64
> > $ cmake .. # plus any options you want
> > $ make
> > 
> > --
> > Gonzalo Garramuñoggarr...@gmail.com

-- 

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Re: [CMake] using source files in build directory

[J Decker]

That's really more of a job for source control
if you add like if( exists  ) for each potential file you want
to experiment with it could be done.



On Fri, Oct 23, 2015 at 2:07 AM, Johannes Zarl-Zierl
 wrote:
> Hi,
>
> For header files, that's quite a normal thing to do - you just need to add the
> CMAKE_CURRENT_BINARY_DIR to your include directories.
>
> For .cpp files, you can write your target so that it is referencing the source
> file in the binary directory. I.e.:
>
> configure_file(
>   ${CMAKE_CURRENT_SOURCE_DIRECTORY}/file1.cpp.in
>   ${CMAKE_CURRENT_BINARY_DIRECTORY}/file1.cpp COPYONLY)
> add_executable( target1 ${CMAKE_CURRENT_BINARY_DIRECTORY}/file1.cpp)
>
> Is that sufficient for your needs?
>
> If you rather need a real wildcard way to override arbitrary source files,
> then you're probably out of luck. You could still write a wrapper around
> add_executable and add_library that inspects source directory and binary
> directory, but that might not be worth the effort...
>
>   Johannes
>
> On Thursday 22 October 2015 15:13:08 Srinath Vadlamani wrote:
>> Hello All,
>>   I am aware of out-of-source builds.  I want to add modified source files
>> to the out of source build directory and have CMake use these modified
>> files.
>>
>> Below is my example:
>> $pwd
>> 
>> $ls
>> CmakeLists.txt CMake README src tests doc ...
>> $mkdir build1
>> $cd build1
>> $cp ../src/file1.cpp .
>> $ 
>> $ccmake  
>> $make -j N
>> $ 
>>
>> Now I want to make another build directory that houses a few other modified
>> files:
>>
>> $cd 
>> $mkdir build2
>> $cd build2
>> $cp ../src/file1.cpp . && cp ../src/file2.cpp .
>> $
>> $ccmake  
>> $make -j N
>> $> but file2 mods helped>
>>
>>
>> . and so on.  The point is that the build directory allowing for
>> modified source files helps preserve executables and the dependent source
>> files for code management.  Some may now chime in with opinions on version
>> control usage, but I'm trying to understand if it is possible to do what I
>> described and is possible with Autotools.
>>
>> Thank you for your time,
>> <>Srinath
>>
>> =
>> Srinath Vadlamani
>> =
>>
>> On Thu, Oct 22, 2015 at 3:02 PM, Gonzalo  wrote:
>> > El 21/10/15 a las 17:45, Srinath Vadlamani escribió:
>> >
>> > Hello All,
>> >
>> >   Is it possible to have CMake use source files in some particular order
>> >
>> > that are placed in the out-of-source build directory?  This is allows for
>> > the convenience of having multiple builds in different build directories
>> > due to a few file changes while preserving the files themselves?
>> >
>> > You are aware that you can do out of source builds, right?
>> >
>> > $ mkdir build-linux64
>> > $ cd build-linux64
>> > $ cmake .. # plus any options you want
>> > $ make
>> >
>> > --
>> > Gonzalo Garramuñoggarr...@gmail.com
>
> --
>
> 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
>
> Follow this link to subscribe/unsubscribe:
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Re: [CMake] using source files in build directory

[Gonzalo]

El 21/10/15 a las 17:45, Srinath Vadlamani escribió:

Hello All,
  Is it possible to have CMake use source files in some particular 
order that are placed in the out-of-source build directory?  This is 
allows for the convenience of having multiple builds in different 
build directories due to a few file changes while preserving the files 
themselves?



You are aware that you can do out of source builds, right?

$ mkdir build-linux64
$ cd build-linux64
$ cmake .. # plus any options you want
$ make

--
Gonzalo Garramuño
ggarr...@gmail.com

-- 

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Re: [CMake] using source files in build directory

[Srinath Vadlamani]

Hello All,
  I am aware of out-of-source builds.  I want to add modified source files
to the out of source build directory and have CMake use these modified
files.

Below is my example:
$pwd

$ls
CmakeLists.txt CMake README src tests doc ...
$mkdir build1
$cd build1
$cp ../src/file1.cpp .
$ 
$ccmake  
$make -j N
$ 

Now I want to make another build directory that houses a few other modified
files:

$cd 
$mkdir build2
$cd build2
$cp ../src/file1.cpp . && cp ../src/file2.cpp .
$
$ccmake  
$make -j N
$


. and so on.  The point is that the build directory allowing for
modified source files helps preserve executables and the dependent source
files for code management.  Some may now chime in with opinions on version
control usage, but I'm trying to understand if it is possible to do what I
described and is possible with Autotools.

Thank you for your time,
<>Srinath

=
Srinath Vadlamani
=

On Thu, Oct 22, 2015 at 3:02 PM, Gonzalo  wrote:

> El 21/10/15 a las 17:45, Srinath Vadlamani escribió:
>
> Hello All,
>   Is it possible to have CMake use source files in some particular order
> that are placed in the out-of-source build directory?  This is allows for
> the convenience of having multiple builds in different build directories
> due to a few file changes while preserving the files themselves?
>
> You are aware that you can do out of source builds, right?
>
> $ mkdir build-linux64
> $ cd build-linux64
> $ cmake .. # plus any options you want
> $ make
>
> --
> Gonzalo Garramuñoggarr...@gmail.com
>
>
-- 

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[CMake] using source files in build directory

[Srinath Vadlamani]

Hello All,
  Is it possible to have CMake use source files in some particular order
that are placed in the out-of-source build directory?  This is allows for
the convenience of having multiple builds in different build directories
due to a few file changes while preserving the files themselves?

Thanks,
<>Srinath
=
Srinath Vadlamani
=
-- 

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