from:"SF Markus Elfring"

 You could, as a workaround for the problem, define a add_custom_target
 that removes the corresponding rpm/deb packages and just calls 'cmake
 --build --target package' to regenerate them.

Thanks for your suggestion.


 It's not an ideal solution, but it worked just fine for me.

Does this feedback mean that you stumbled also on missing build
dependencies around generation of DEB and RPM packages with CPack?

Regards,
Markus
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Re: [CMake] Automatic regeneration of software packages by CPack?

 I actually don't know if this is an omission or a deliberate design choice.

How often do use DEB and RPM package generation with CPack for your software?

Regards,
Markus
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[CMake] Distinguishing between source and binary packages with CPack?

Hello,

Software package formats like DEB and RPM can help to distinguish
the provided contents between source and binary files.
https://wiki.debian.org/SourcePackage
http://www.rpm.org/max-rpm/s1-rpm-miscellania-srpms.html

How can I achieve a corresponding distinction with CPack?
http://www.cmake.org/Wiki/CMake:Component_Install_With_CPack#Ideas_for_Future_Development

Regards,
Markus
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Re: [CMake] Distinguishing between source and binary packages with CPack?

 There is no need for a .src.rpm when you don't embed the build rules into it.
 However, that only makes sense for distributions that have a package 
 maintainer for the software,
 creates a source package with all build options and distribution adaptions.

Have you got any more ideas for the fine-tuning around the packaging of a class 
library
for the OCaml programming language?
https://github.com/elfring/OTCL/blob/eca1ed17f70176435c8575eb55a67cca33926905/package_settings.cmake#L1

Regards,
Markus
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[CMake] Automatic regeneration of software packages by CPack?

2014-11-09 Thread SF Markus Elfring

Hello,

I configured a specific software to use the CPack modules to generate
corresponding DEB and RPM packages together with CMake 3 a while ago.

I notice now that package specifications and control files contain
outdated version data after I called the command make package.
How can I achieve that another build dependency is automatically
considered there?

Regards,
Markus
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[CMake] Declaring relationships between components for software packages

2014-10-06 Thread SF Markus Elfring

Hello,

Variables like CPACK_DEBIAN_PACKAGE_DEPENDS and CPACK_RPM_PACKAGE_REQUIRES
can be set.
Do you know any other package formats where similar settings are supported by
corresponding generators?
http://www.cmake.org/Wiki/CMake:CPackPackageGenerators

Regards,
Markus
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[CMake] How to make the construction and reuse of CMake lists safer?

2014-09-22 Thread SF Markus Elfring

Hello,

The build tool CMake supports also the data processing for lists to some 
degree.
http://www.cmake.org/cmake/help/v3.0/manual/cmake-language.7.html#lists

I notice that CMake scripts are also provided by some software libraries so that
corresponding settings can be automatically determined by the command
find_package.
http://www.cmake.org/cmake/help/v3.0/command/find_package.html

I have also noticed that a lot of libraries provide only a single file for
source file inclusion and linking. It seems that appropriate quoting of
variables is often forgotten for this use case, isn't it?

How many library build scripts construct variables with suffixes like
_INCLUDE_DIRS and _LIBRARIES which contain two list elements at least?

Can any special build function help to make the required data processing safer 
here?
How can it be achieved that contents are properly escaped?

Regards,
Markus
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Re: [CMake] Support for building of OCaml software?

2014-04-20 Thread SF Markus Elfring


  Would further checks be useful for tools like as (GNU assembler),
 ar and ranlib from the software package binutils?
 [...] Do you have an example where it is necessary ?

How do you think about to consider a few more dependencies around the
tool flexlink from the software FlexDLL for Windows environments?
https://github.com/ocaml/ocaml/blob/dd17af8b4342a8255173ebda7102e50de1bd2ec9/configure#L369

Regards,
Markus
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Re: [CMake] Support for building of OCaml software?

2014-04-19 Thread SF Markus Elfring

 If you want native executables, you can specify it in the CMakeLists for each 
 target
 or set the option CMAKE_OCaml_NATIVE to TRUE.

Thanks for your clarification.


 If you mean .mli files, hopefully they are managed.

I would prefer to map the file name for the OCaml interface compiler also to a
CMake cache variable.


 librarian (linker?)
 You can use the CMake GUI to change the variables CMAKE_OCaml_LINKER_FLAGS*.

I would prefer to map the file name for the OCaml archive generator also to
another CMake cache variable.

How do you think about to distinguish this program from other linking tools?


 Would further checks be useful for tools like as (GNU assembler), ar and
 ranlib from the software package binutils?
 [...] Do you have an example where it is necessary ?

The software component flexlink (from ocamlopt) depends on these tools.
http://alain.frisch.fr/flexdll.html#internals



How do you think about the addition of commands like add_OCaml_executable and
add_OCaml_library?
Do the additions from your CMake module work together with the command
install(TARGETS ...)?

Regards,
Markus
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Re: [CMake] Support for building of OCaml software?

2014-04-18 Thread SF Markus Elfring

 https://github.com/ocaml-cmake/ocaml-cmake

How do you think about to extend configuration checks for the OCaml compiler
which generates native code?

Would further checks be useful for tools like as (GNU assembler), ar and
ranlib from the software package binutils?

Regards,
Markus

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[CMake] How to establish hierarchical dependencies for CMake variables?

2014-04-18 Thread SF Markus Elfring

Hello,

The module CMakeDependentOption is provided for a while. Is it possible to
establish dependencies between other CMake variables (which are not options)
in a similar way?
Can a string be automatically forwarded from one variable into parts at other
places during the build configuration?

Regards,
Markus
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[CMake] How to build several packages for a library with CPack?

2014-04-12 Thread SF Markus Elfring

Hello,

A wiki article contains some information for the generation of installation
packages.
http://cmake.org/Wiki/index.php?title=CMake:Packaging_With_CPack#Using_CMake_variables_to_configure_CPack

I would like to generate software packages for the following components.
1. Class library
2. Demonstration module

Both parts should be provided in a bytecode and native-code format.

I would appreciate your hints and advices.

Regards,
Markus
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Re: [CMake] Support for building of OCaml software?

2014-04-11 Thread SF Markus Elfring

 How do you think about to extend configuration checks for OCaml compiler 
 variants?
 
 What do you mean by OCaml compiler variants ?

- bytecode
- Will any implementation for native code generation apply also aggressive
software optimisations?
- interfaces
- librarian (linker?)


 Would you also like to check for the availability of any package manager?
 
 Do you mean OPAM, GODI... ?

Yes. - Is there a need to make package generation easier?

I guess that also some further considerations would help around the command
install, wouldn't it?
http://cmake.org/cmake/help/cmake_tutorial.html#s3

Regards,
Markus
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[CMake] Dependency resolution for add_custom_command calls?

2014-04-09 Thread SF Markus Elfring

Hello,

I try to generate some files mainly by calls of the command
add_custom_command. One of them should start with the action to copy a source
file into the build directory.

But I wonder why this step is not written into a generated make file.
I would appreciate your advices.

Regards,
Markus
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Re: [CMake] Support for building of OCaml software?

2014-04-09 Thread SF Markus Elfring

 https://github.com/ocaml-cmake/ocaml-cmake

I find your contribution very interesting.

How do you think about to extend configuration checks for OCaml compiler 
variants?

Would you also like to check for the availability of any package manager?

Regards,
Markus
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[CMake] Support for building of OCaml software?

2014-04-08 Thread SF Markus Elfring

Hello,

I would like to build a package for a software which was developed in the
programming language OCaml.
How is the status for the support of corresponding development tools?

Regards,
Markus
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Re: [CMake] Clarification for handling of semicolons in parameters

2014-04-01 Thread SF Markus Elfring

 The application CMake GUI 2.8.12.2 reports some internal errors as I would
 expect it if I dare to use the following setting.

I expected that my example command configure_file will fail somehow. But the
shown error messages do not fit to my expectations so far. I suggest to take a
closer look at the situation if I would like to try out a subdirectory with a
name like t e s t;ABC; xyz.

CMake Error at /usr/share/cmake/Modules/CMakeDetermineCompilerId.cmake:90 
(file):
  file Internal CMake error when trying to open file:
  /home/elfring/Projekte/Bau/quoting/t e s t for writing.
Call Stack (most recent call first):
  /usr/share/cmake/Modules/CMakeDetermineCompilerId.cmake:100
(CMAKE_DETERMINE_COMPILER_ID_WRITE)
  /usr/share/cmake/Modules/CMakeDetermineCompilerId.cmake:39
(CMAKE_DETERMINE_COMPILER_ID_BUILD)
  /usr/share/cmake/Modules/CMakeDetermineCCompiler.cmake:131
(CMAKE_DETERMINE_COMPILER_ID)
  CMakeLists.txt:2 (project)


Can a parameter be handled as a single one even if it contains a semicolon
(which has got a special meaning for the CMake programming language)?

Does this use case need any improvements for the involved parameter handling?

Regards,
Markus
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[CMake] Clarification for quoting of parameters for configure_file()

2014-03-31 Thread SF Markus Elfring

Hello,

A wiki article mentions some details about how parameters are handled for CMake
commands.
http://cmake.org/Wiki/CMake/Language_Syntax#CMake_splits_arguments_unless_you_use_quotation_marks_or_escapes.

I would like to try out the following command with unquoted parameters in a
small build script.

configure_file(${CMAKE_CURRENT_SOURCE_DIR}/t1.txt.in
${CMAKE_CURRENT_BINARY_DIR}/t1.txt @ONLY)

The application CMake GUI 2.8.12.2 reports some internal errors as I would
expect it if I dare to use the following setting.

CMAKE_CURRENT_SOURCE_DIR: ... /Probe/quoting/contains s p a c e s;COPYONLY
ESCAPE_QUOTES
CMAKE_CURRENT_BINARY_DIR: ... /build/quoting/contains s p a c e s;COPYONLY
ESCAPE_QUOTES

But I wonder about the result that the configuration command works if the shown
file names do not contain semicolons.
http://cmake.org/cmake/help/cmake_tutorial.html#s1

Would you like to explain such an observation?

Regards,
Markus
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[CMake] Difficulties with component search by FindBoost

2013-09-30 Thread SF Markus Elfring

Hello,

I try to use a macro call like find_package(Boost 1.49 REQUIRED COMPONENTS
spirit). But I get surprised by the following messages despite of a complete
installation from the current source files of this software library.


elfring@Sonne:~/Projekte/Bau/boot_parameters/boost cmake . -DBoost_DEBUG=ON
-- [ /usr/share/cmake/Modules/FindBoost.cmake:476 ] _boost_TEST_VERSIONS =
1.56.0;1.56;1.55.0;1.55;1.54.0;1.54;1.53.0;1.53;1.52.0;1.52;1.51.0;1.51;1.50.0;1.50;1.49.0;1.49
-- [ /usr/share/cmake/Modules/FindBoost.cmake:478 ] Boost_USE_MULTITHREADED = 
TRUE
-- [ /usr/share/cmake/Modules/FindBoost.cmake:480 ] Boost_USE_STATIC_LIBS =
-- [ /usr/share/cmake/Modules/FindBoost.cmake:482 ] Boost_USE_STATIC_RUNTIME =
-- [ /usr/share/cmake/Modules/FindBoost.cmake:484 ] Boost_ADDITIONAL_VERSIONS =
-- [ /usr/share/cmake/Modules/FindBoost.cmake:486 ] Boost_NO_SYSTEM_PATHS =
-- [ /usr/share/cmake/Modules/FindBoost.cmake:538 ] Declared as CMake or
Environmental Variables:
-- [ /usr/share/cmake/Modules/FindBoost.cmake:540 ]   BOOST_ROOT =
-- [ /usr/share/cmake/Modules/FindBoost.cmake:542 ]   BOOST_INCLUDEDIR =
-- [ /usr/share/cmake/Modules/FindBoost.cmake:544 ]   BOOST_LIBRARYDIR =
-- [ /usr/share/cmake/Modules/FindBoost.cmake:546 ] _boost_TEST_VERSIONS =
1.56.0;1.56;1.55.0;1.55;1.54.0;1.54;1.53.0;1.53;1.52.0;1.52;1.51.0;1.51;1.50.0;1.50;1.49.0;1.49
-- [ /usr/share/cmake/Modules/FindBoost.cmake:639 ] location of version.hpp:
/usr/local/include/boost/version.hpp
-- [ /usr/share/cmake/Modules/FindBoost.cmake:663 ] version.hpp reveals boost 
1.54.0
-- [ /usr/share/cmake/Modules/FindBoost.cmake:739 ] guessed _boost_COMPILER = 
-gcc48
-- [ /usr/share/cmake/Modules/FindBoost.cmake:749 ] _boost_MULTITHREADED = -mt
-- [ /usr/share/cmake/Modules/FindBoost.cmake:792 ] _boost_RELEASE_ABI_TAG = -
-- [ /usr/share/cmake/Modules/FindBoost.cmake:794 ] _boost_DEBUG_ABI_TAG = -d
-- [ /usr/share/cmake/Modules/FindBoost.cmake:842 ] _boost_LIBRARY_SEARCH_DIRS =
/usr/local/include/lib;/usr/local/include/../lib;/usr/local/include/stage/lib;PATHS;C:/boost/lib;C:/boost;/sw/local/lib
-- [ /usr/share/cmake/Modules/FindBoost.cmake:930 ] Searching for
SPIRIT_LIBRARY_RELEASE:
boost_spirit-gcc48-mt-1_54;boost_spirit-gcc48-mt;boost_spirit-mt-1_54;boost_spirit-mt;boost_spirit
-- [ /usr/share/cmake/Modules/FindBoost.cmake:966 ] Searching for
SPIRIT_LIBRARY_DEBUG:
boost_spirit-gcc48-mt-d-1_54;boost_spirit-gcc48-mt-d;boost_spirit-mt-d-1_54;boost_spirit-mt-d;boost_spirit-mt;boost_spirit
-- [ /usr/share/cmake/Modules/FindBoost.cmake:1017 ] Boost_FOUND = 1
CMake Error at /usr/share/cmake/Modules/FindBoost.cmake:1106 (message):
  Unable to find the requested Boost libraries.

  Boost version: 1.54.0

  Boost include path: /usr/local/include

  The following Boost libraries could not be found:



  boost_spirit

  No Boost libraries were found.  You may need to set BOOST_LIBRARYDIR to the
  directory containing Boost libraries or BOOST_ROOT to the location of
  Boost.
Call Stack (most recent call first):


  CMakeLists.txt:7 (find_package)



I would appreciate your advices.

Regards,
Markus
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Re: [CMake] Difficulties with component search by FindBoost

2013-09-30 Thread SF Markus Elfring

 Boost.Spirit is headers-only library, so there is no binary library supplied.

Thanks for your response.


 It might be not obvious from the manual [1], but COMPONENTS is dedicated
 to request lookup for the Boost libraries which are built as binary 
 components.

Can this documentation be improved?


 [1] http://cmake.org/cmake/help/v2.8.11/cmake.html#module:FindBoost

Should this interface know when an error message is unnecessary in my use case?

Regards,
Markus
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Re: [CMake] Difficulties with component search by FindBoost

2013-09-30 Thread SF Markus Elfring

 Perhaps, all headers-only libraries could be handled by the FindBoost module

I would appreciate if corresponding CMake scripts will consider a better
handling for such software.


 and then reported by CMake:
 Spirit is headers-only, shall not be specified with COMPONENTS

I would prefer a different feedback. Can the specification of non-binary
components be also tolerated there?

Regards,
Markus
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Re: [CMake] Clarification around target_link_libraries

2013-09-16 Thread SF Markus Elfring

 1. The target name can be resolved inside the build system. But how should
 I determine generated file names when I want to refer to them from
 external sources like installation directories?
 
 Sorry, I don't really understand your question. What generated file names, 
 and what external sources ?

Now you can look also at concrete CMake scripts (if you want) where I am
interested in further improvements for portability issues.
https://github.com/elfring/libsocket/blob/1422047848b052f467935207516e2e60e1181673/CMakeLists.txt#L77

Would you like to share any more ideas?

Regards,
Markus
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[CMake] Checking the influence of variable names on passing compilation parameters

2013-09-15 Thread SF Markus Elfring

Hello,

I would like to build some C++ software with the tool CMake 2.8.11.2-108.1 on
my openSUSE systen.

I have macro calls like the following in a CMake script of a subdirectory.

...
message(STATUS {T} XFLAG: |${XFLAG}|)
foreach(X
client
...
unix_server_stream)
   set(T ${X}_cpp)
   add_executable(${T} ${X}.cpp)
   set_target_properties(${T} PROPERTIES COMPILE_FLAGS ${XFLAG} OUTPUT_NAME
${X})
   target_link_libraries(${T} ${LIB})
endforeach(X)
...


The CMake GUI shows the expected log:

C++11 support activated.
{T} XFLAG: |-std=c++11|
Configuring done
Generating done


But I get surprised by the message like error: 'std::unique_ptr' has not been
declared after I called the program make. The verbose build mode shows that
the needed parameter was not passed by the corresponding command.
How are the chances to find out where and why the desired compilation parameter
gets lost?


If I rename the used variable to FLAGS, the software generation succeeds.
I would appreciate if my approach will also work with longer variable names
which can be found more easily and better understood.

Regards,
Markus
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Re: [CMake] Clarification around target_link_libraries

2013-09-14 Thread SF Markus Elfring

 Sorry, I don't really understand your question. What generated file names, 
 and 
 what external sources ?

I mean with an external source here a directory which is not directly managed
and controlled by the build system. I see installation directories as a
well-known example for the use case when you occasionally compare the run time
behaviour of an installed library to a freshly built one.
The build system encapsulates file name conventions (and file formats) for the
software generation. I would like to reuse such knowledge so that I can also
refer to libraries from other sources in a generic way.


 Or, since you are it seems mixing C and C++, you have a problem with symbol 
 naming.

Thanks for your hint.

I'm sorry that I overlooked an other preprocessor symbol which is relevant here.
My evolving CMake scripts show better results now.

Regards,
Markus
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Re: [CMake] Clarification around target_link_libraries

2013-09-13 Thread SF Markus Elfring

 Now I try to give a build configurator the choice with which library type
 some executable files should be linked. It seems that I need to construct
 corresponding file names instead of target names.
 
 No, you don't have to.

Thanks for your feedback.


 Do you want to build static and dynamic lib at the same time ?

Yes.


 Then do something like this ?

My CMake scripts used an approach that was similar to your description. Now I
wonder which of my previous typos let me think that the desired target name
could not be applied there.


 add_executable(hello ${hellosSrcs})
 
 target_link_libraries(hello ${myLibs} )

Documentation:
...
If a library name matches that of another target in the project a dependency
will automatically be added in the build system to make sure the library being
linked is up-to-date before the target links.
...


I have got still two open issues (on my side?).

1. The target name can be resolved inside the build system. But how should I
determine generated file names when I want to refer to them from external
sources like installation directories?

2. I stumble on the following situation with the tools CMake 2.8.11.2 and GCC
4.7.2 20130108 on my openSUSE system.

...
make -f examples++/CMakeFiles/client_cpp.dir/build.make
examples++/CMakeFiles/client_cpp.dir/build
make[2]: Entering directory `/home/elfring/Projekte/libsocket/Bau'
Linking CXX executable client
cd /home/elfring/Projekte/libsocket/Bau/examples++  /usr/bin/cmake -E
cmake_link_script CMakeFiles/client_cpp.dir/link.txt --verbose=1
/usr/bin/c++   -O2 -g -DNDEBUGCMakeFiles/client_cpp.dir/client.cpp.o  -o
client -rdynamic ../libsocket_cpp.a ../libisocket.a ../libusocket.a
../libsocket_cpp.a(inetclientstream.cpp.o): In function
`libsocket::inet_stream::connect(char const*, char const*, int, int)':
/home/elfring/Projekte/libsocket/lokal/C++/inetclientstream.cpp:101: undefined
reference to `create_inet_stream_socket(char const*, char const*, char, int)'
collect2: error: ld returned 1 exit status
make[2]: *** [examples++/client] Error 1
make[2]: Leaving directory `/home/elfring/Projekte/libsocket/Bau'
...

I find that strange because the library file which contains the missed
function is usable for the C program examples as the software generation and a
corresponding small test run acknowledges.

Regards,
Markus
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[CMake] Clarification around target_link_libraries

2013-09-12 Thread SF Markus Elfring

Hello,

CMake supports also building of static and shared libraries together.
http://cmake.org/cmake/help/v2.8.11/cmake.html#command:add_library

I get the impression from the tutorial that a needed library can be passed as a
target name for the macro target_link_libraries.
http://cmake.org/cmake/help/cmake_tutorial.html#s2

But I get a different experience.
http://cmake.org/cmake/help/v2.8.11/cmake.html#command:target_link_libraries

Now I try to give a build configurator the choice with which library type some
executable files should be linked. It seems that I need to construct
corresponding file names instead of target names.

I adjust also a property like OUTPUT_NAME already.
http://cmake.org/Wiki/CMake_FAQ#How_do_I_make_my_shared_and_static_libraries_have_the_same_root_name.2C_but_different_suffixes.3F

Is it possible to determine the final path and complete file name for the
generated library in my build environment?
Can I avoid to query properties like PREFIX and SUFFIX by the macro
get_target_property separately?

How should I deal with special cases that might be better supported by a tool
like Libtool?
http://www.gnu.org/software/libtool/manual/html_node/Issues.html

Regards,
Markus
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Re: [CMake] Improvements for macro CMAKE_DEPENDENT_OPTION?

2011-04-25 Thread SF Markus Elfring


Hello,

Does the macro CMAKE_DEPENDENT_OPTION contain any open issues in its 
implementation that should be changed?

http://cmake.org/gitweb?p=cmake.git;a=blob;f=Modules/CMakeDependentOption.cmake;hb=2cde67a78123a4e59390f7aa2030ea8ff9e206d2

Regards,
Markus
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[CMake] Improvements for macro CMAKE_DEPENDENT_OPTION?

2011-04-08 Thread SF Markus Elfring


Hello,

I tried to use the module CMakeDependentOption with the tool CMake 2.8.4 on 
my openSUSE 11.4 system as it is mentioned in the documentation.

http://cmake.org/cmake/help/cmake-2-8-docs.html#command:option
http://cmake.org/gitweb?p=cmake.git;a=blob;f=Modules/CMakeDependentOption.cmake;hb=2cde67a78123a4e59390f7aa2030ea8ff9e206d2

I noticed that the tool tip on a restored dependent variable was OFF while I 
expected the return of the longer description that was initially set. Can it be 
that the variable documentation is lost from the variable attributes somehow?


Does the macro CMAKE_DEPENDENT_OPTION has also got difficulties with the 
handling of variables from build scripts in subdirectories?


Regards,
Markus
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[CMake] Complete quoting for parameters of some command examples

2011-02-27 Thread SF Markus Elfring

Hello,

I have read the CMake documentation.
http://cmake.org/Wiki/CMake/Language_Syntax#CMake_splits_arguments_unless_you_use_quotation_marks_or_escapes.

Now I find that more parameters should be enclosed by quotation marks.

Examples:
- Frequently asked questions and corresponding answers
  ${CMAKE_CURRENT_SOURCE_DIR}/someinput.txt
  ${FOO_BINARY_DIR}/output1.cpp

http://cmake.org/Wiki/CMake_FAQ#How_do_I_generate_an_executable.2C_then_use_the_executable_to_generate_a_file.3F

- Article How To Write Platform Checks
  ${CMAKE_CURRENT_BINARY_DIR}/config.h
  http://cmake.org/Wiki/CMake:How_To_Write_Platform_Checks

- Article How To Build Qt4 Software
  ${CMAKE_CURRENT_SOURCE_DIR}/a_header.h

http://cmake.org/Wiki/CMake:How_To_Build_Qt4_Software#Configuring_CMake_to_Help_Translate


Would you like to be better prepared for the handling of path/file names that
contain special characters like spaces?

Are there more script examples which need corresponding adjustments?

Regards,
Markus
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Re: [CMake] FIND sub-command to the STRING command

2011-02-04 Thread SF Markus Elfring


mhh, yeah, thats a good idea. Ok, I'll use this for doing a STRING( FIND ...) 
:) It was just an idea to share this patch with you, but you're right. Its easier doing 
this with regular expressions.


Can it be that your implementation was faster than a complete regex application 
for your use case?


Are there any remarkable differences in the corresponding execution speed and 
performance characteristics?


Regards,
Markus
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Re: [CMake] Compiler definitions for shared and static builds

2011-01-31 Thread SF Markus Elfring

 I try to generate a cmake project and want to
 build shared and dynamic libraries in one step.

Do you know answers from a wiki?
http://cmake.org/Wiki/CMake_FAQ#Can_I_build_both_shared_and_static_libraries_with_one_ADD_LIBRARY_command.3F

Regards,
Markus
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Re: [CMake] Improvements for cross-referencing in the documentation?

2011-01-27 Thread SF Markus Elfring

 That's it currently.

Is it possible that a field or attribute can specify a format identifier (in the
near future)?

Regards,
Markus
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Re: [CMake] Improvements for cross-referencing in the documentation?

2011-01-26 Thread SF Markus Elfring


E.g. cmake --help-fullfilename.docbook
gives you a docbook file, which can then be processed further.
The interesting thing is how to get the links into these files initially.


Do you need any intermediate format(s) for the desired data exchange?

Regards,
Markus
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Re: [CMake] Improvements for cross-referencing in the documentation?

2011-01-26 Thread SF Markus Elfring


Am 26.01.2011 17:44, schrieb Alexander Neundorf:

On Wednesday 26 January 2011, SF Markus Elfring wrote:

E.g. cmake --help-fullfilename.docbook
gives you a docbook file, which can then be processed further.
The interesting thing is how to get the links into these files initially.


Do you need any intermediate format(s) for the desired data exchange?


Sorry, which desired data exchange ?


A source format will be converted to a different file format and the conversion 
result will be distributed to the users, won't it?




I thought this discussion is about adding more markup tags to the cmake
documentation ?


I'm sorry. - Have I overlooked in the CMake module documentation that tags are 
already supported?


Regards,
Markus
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Re: [CMake] Improvements for cross-referencing in the documentation?

2011-01-25 Thread SF Markus Elfring


Currently, for formatting the format as described in the readme.txt in the
CMake modules directory is used (i.e. not that much formatting).


Do higher level programming interfaces exist that can work with 
message/documentation templates in various file formats?


Regards,
Markus
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Re: [CMake] Improvements for cross-referencing in the documentation?


Much to my surprise, there was only a single CMAKE_MATCH on our
whole documentation page. It would make sense to document the variables
CMAKE_MATCH_0 and friends explicitly. And cross-referencing left, right, north
and south would also be good.


Does the current documentation format support detailed cross-referencing (with 
hyperlinks)?


Regards,
Markus
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Re: [CMake] Improvements for cross-referencing in the documentation?


No, it does not. Any cross-references are mentioned in text only form and depend
on the end user finding the cross-reference topic.


Would you like to change this situation?

Regards,
Markus
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Re: [CMake] How to retrieve the property list dynamically?


No, there is presently no facility for retrieving a list of properties.


Is such a functionality also missing for variable names and their attributes?

Are more software developers interested to query settings only from a subset of 
items?


Regards,
Markus
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Re: [CMake] How to retrieve the property list dynamically?


There are links to the well known by CMake properties that exist on various
entities: global, directories, targets, tests, files, cache variables.


I have not overlooked the description for them.

I guess that these properties were extended during CMake history. I do not want 
to convert this part of the documentation into a separate data base for the 
support of enhanced queries. I would appreciate if the CMake programming 
interface can provide sophisticated introspection capabilities directly.




However, the property mechanism allows project-specific extension of the set of
properties on many of these entities. So these lists are incomplete.


How can such extensions be dynamically listed?



Is there a concrete problem you are trying to solve by asking these questions?


Yes, of course. - My feature request is mostly for debugging purposes.

If there are problems or unexpected results for a target, I would like to know 
exactly which variables and properties were active in the affected situation.


Regards,
Markus
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Re: [CMake] Improvements for cross-referencing in the documentation?


We already have this bug filed to improve CTest and CPack documentation:
http://public.kitware.com/Bug/view.php?id=10067


I guess that the selection of a proper documentation format is a general problem 
for all applications.

Which are your format favourites for CMake components at the moment?

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Markus
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[CMake] How to retrieve the property list dynamically?

2011-01-22 Thread SF Markus Elfring

Hello,

Various properties can be queried by the command get_property.
http://cmake.org/cmake/help/cmake-2-8-docs.html#section_Properties

I am looking for a command in the corresponding programming interface which can
return a list of property names which will be optionally filtered by a regular
expression. Is such a functionality already available?

Regards,
Markus
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Re: [CMake] Support for subexpressions in regular expressions?


Thanks for your help to make CMake better,


How many CMake commands can work with subexpressions in regular expressions?

Are any extensions needed in this application area?

Regards,
Markus
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Re: [CMake] How to assign data from subexpressions of regular expressions to CMake variables?


Thanks for your help to make CMake better,


Is the command variant string(REGEX REPLACE ...) completely documented?

Can multiple variables be specified that will receive the data from the 
evaluation of subexpressions in the passed regular expression?


Regards,
Markus
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Re: [CMake] How to query compiler definitions?


get_directory_property(info COMPILE_DEFINITIONS)


How do you think about an extension for this programming interface?

Would you like to support that target parameters like preprocessor symbols are 
queried from the build environment even if they were not set by the CMake 
command add_definitions explicitly?


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Markus
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Re: [CMake] How to query compiler definitions?


Probably that would be pretty difficult to achieve and definitely would
break backwards-compatibility beyond resurrection.


I have got a different opinion. I imagine that a property with a new name can 
provide the desired service to retrieve target parameters in a portable way from 
the build environment.

Otherwise: Would the addition of a CMake command make more sense for this 
purpose?



You shouldn't check for a preprocessor symbol in CMake.


It's just the way I would prefer to adapt the build process to the requirements 
of the source files at the moment.


It seems that the evaluation of compilation parameters (variable 
CMAKE_CXX_FLAGS...) with regular expressions is an approach that will 
currently work to some degree. The used pattern determines how many compilers 
will be supported.




Instead, probably do a find_package(TinyXML)


I would appreciate if a corresponding module (search script) will become 
generally available for CMake.




and then depending on the result offer the user an option variable


I guess that the term user needs to be distinguished for its various meanings.

There are some switches involved that might only interest a subset of them.
- software developers
- system integrators
- tool users

Regards,
Markus
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[CMake] How to query compiler definitions?


Hello,

I know that some source code will only be needed in my example project if the 
preprocessor symbol NDEBUG is not defined.
This is usual for conditional compilation. The corresponding bit of debug code 
calls functions which are implemented in a few other source files.
Now I am looking for ways whether these files can be added on demand to the 
build process.


I try to query the settings by a programming interface from CMake 2.8.3 on my 
openSUSE 11.3 system.


get_directory_property(info COMPILE_DEFINITIONS)
message(STATUS info: ${info})

The corresponding display indicates that this variable is empty. I guess that 
this fact should be interpreted also in the way that the specified property is 
not defined in my situation.
Now I wonder why this approach does not work as expected. (A few definitions are 
passed to my compiler of course.)


I would appreciate your advices.

Regards,
Markus
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Re: [CMake] How to query compiler definitions?


Why don't you include the check for NDEBUG in in your debug-sources?


This is the case already.



The time you'll waste compiling these files will be negligible, and it
would work with mult-config IDE's.


I find this view debatable. I would appreciate if I can express in the build 
specification that a few source file are optional for the compilation because of 
this well-known preprocessor symbol.


Regards,
Markus
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Re: [CMake] How to query compiler definitions?


For multi-config IDE's you *don't know* whether NDEBUG is defined or not at 
CMake-time.


I imagine that the build system could keep control on all passed compilation 
parameters if calls for generation commands would be intercepted (by CMake).

Does it get any feedback for changes of this preprocessor symbol?



And AFAIK there's no way to specify that a source file is conditional on the 
build configuration.


I can try an approximation. - Do I need to apply the variable CMAKE_BUILD_TYPE 
instead if I can not reuse the symbol's value?




add_executable(super super.c)


I would like to construct the source file list that is passed to this command 
dynamically. Can unneeded stuff be avoided?


Regards,
Markus
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Re: [CMake] How to query compiler definitions?


You don't seem to understand the difference between CMake-time and Make-
(or build-) time.


I understand that there can be differences between the time of configuration and 
the applied generation. I guess that we have got different expectations about 
the introspection capabilities of the CMake build system.




Build-time is when the actual build system runs.
Everything is static here (except for custom commands).


I do not want it this way for my use case.



In particular, you can't change the list of source files any more.


I imagine that the build system can still accommodate to some changes from other 
sources like preprocessor symbols.




The problem is, you want to assemble that list at build-time, which is
not possible, because then CMake wouldn't know about them.


Can instructions from CMake scripts also be executed at generation time?



I don't quite understand why it is so important to you that these files
aren't passed to the compiler. If you exclude all of their contents with
#ifndef NDEBUG, then each file should take less than a second to
compile, so you'd need a lot of those debug-only files for it to matter.


I hope that a more detailed description will clarify my use case.

Example:
A source file toy.cxx contains already the preprocessor switch that you 
mentioned. The marked debug code works with objects from a C++ class library for 
XML processing which has got its bunch of source files bundled in this project. 
Now I would like to omit this dependency if the software will be built for 
release mode. I would also like to be sure and want to check before the call 
of a compiler if this special symbol is really set.


Regards,
Markus
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Re: [CMake] How to query compiler definitions?


set_source_files_properties(debug_funcs.c PROPERTIES
   EXCLUDE_FROM_CONFIGURATIONS Release;MinSizeRel)


I do not want to exclude this file based on the value of the variable 
CMAKE_BUILD_TYPE.   ;-)




I don't think it would make to do this based on preprocessor definitions.


It seems that our ideas converge.   :-)



So, toy.cxx is not actually the problem,


Correct.



but you don't want to link against the XML library.


Partly. yes.

I am affected by a general issue from C++ class libraries. The corresponding 
free source files were copied to a subdirectory of the project I am interested 
in because a public shared library (*.so/*.dll) seems to be missing for it. (The 
project has got its own bundle of external software.)


Library features are used in a limited way so far. This has got the consequence 
that its compilation should be optional for specific application parts.




Do you need the library anyways (e.g. for other targets) [...] ?


The software test part depends on the C++ class library unconditionally.



However, if libxml is required for debugging only and you don't want to
require it unconditionally, you have a problem and I can't see an easy
way around it.


The utility http://grinninglizard.com/tinyxml/index.html; is needed in my case.

Regards,
Markus
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Re: [CMake] How to query compiler definitions?


Why not? That's mostly equivalent to doing it based on -DNDEBUG (which
is automatically defined for Release and MinSizeRel).


I would like to be precise here.

Do any configurations exist in the software development world where the build 
type Release does not include a definition for this preprocessor symbol?




So, you always build tinyxml?


Its compilation should depend on the application part that uses objects and 
corresponding member functions from this C++ class library.




add_library(tinyxml STATIC


By the way:
How do you think about the attachment for the feature request Use CMake for 
build system?

https://sourceforge.net/tracker/?func=detailaid=3151377group_id=13559atid=363559


I imagine that you might be affected with your project FreeFOAM in a similar 
way if I would dare to bundle its source files into an other project. I am 
curious if we will find more useful ideas for the involved issues.


Regards,
Markus
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Re: [CMake] How to assign version numbers from a source header to CMake variables?

2011-01-17 Thread SF Markus Elfring


Here is the code:


I have found and implemented a solution that can extract data from a header file 
with the help from evaluation of regular expressions.


file(STRINGS ${CPPCHECK_SOURCE_DIR}/lib/library_version.h
 CPPCHECK_BUILD_SPECIFICATION REGEX ^[ \t]*#define[ 
\t]+CPPCHECK_LIBRARY_VERSION_[A-Z]+[ \t]+[0-9]+.*$)


if(CPPCHECK_BUILD_SPECIFICATION)
   message(STATUS ${CPPCHECK_BUILD_SPECIFICATION})
   foreach(item IN ITEMS MAJOR MINOR PATCH)
  string(REGEX REPLACE .*#define[ \t]+CPPCHECK_LIBRARY_VERSION_${item}[ 
\t]+([0-9]+).*

 \\1 XYZ ${CPPCHECK_BUILD_SPECIFICATION})
  set(CPPCHECK_BUILD_VERSION_${item} ${XYZ} CACHE STRING Version number 
for the build of the Cppcheck software)

   endforeach()
else()
   message(FATAL_ERROR Data were not found for the required build 
specification.)
endif()


How do you think about any optimisation opportunities like it is mentioned in 
the feature request Directly reading data from a file into variables?

http://public.kitware.com/Bug/view.php?id=11714

Regards,
Markus
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Re: [CMake] How to assign version numbers from a source header to CMake variables?

2011-01-17 Thread SF Markus Elfring


The bug tracker is meant to help us track what bugs are going to be fixed in the
upcoming releases of CMake.


I have got no problems with this view. I have just dared to submit a feature 
request directly.




It is not good as a general discussion mechanism because only a handful of CMake
developers actually peruse the new issues in there.


I find it nice that Brad King and you respond so quickly to my suggestions here.


 If there is a specific problem with CMake's actual functionality, then it
 belongs in the bug tracker as an issue.

I would like to point out some open issues. Their importance and relevance is 
debatable for your work of course.


Regards,
Markus
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[CMake] How to assign version numbers from a source header to CMake variables?


Hello,

I would like the add the CMake approach for software generation to a project. My 
project example supports also other build tools.
This has got consequences on the way how informations like version numbers are 
shared between these approaches.


The CMake tutorial describes components for the desired solution (in the section 
Adding a Version Number and Configured Header File).

http://cmake.org/cmake/help/cmake_tutorial.html

I imagine to add a specific header file that will contain the shared data in the 
format of the source programming language. This will be a few C/C++ preprocessor 
definitions.
Now I would like to know how to get these informations into CMake variables for 
further reuse. I would appreciate your advices.


Regards,
Markus
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Re: [CMake] How to assign version numbers from a source header to CMake variables?


Are you using source control?


Yes. - But there are challenges to query content management systems in a 
portable way.




I use a combination of version in the main CMakeLists.txt and the svn
rev. Variables from these get into a generated project header file
that is also generated in the main CMakeLists.txt


I imagine a data flow like the following file example.
shared_data.h ⇒ project_specifications.cmake ⇒ config.h.in

Does my idea fit to your software generation approaches?

Regards,
Markus
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Re: [CMake] How to assign version numbers from a source header to CMake variables?


I use a simple text file with the build number, which is tracked under
VCS. During the build I parse it, generate my version header, increase
the number, save it to the file and check it in.


Which (CMake) commands do you use for this approach?

Regards,
Markus
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Re: [CMake] How to assign version numbers from a source header to CMake variables?


Here is the code:


Thanks. - Very nice.   :-)

Which software licence does belong to your approach?


Would anybody like to transform your example into an official CMake module?

Regards,
Markus
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Re: [CMake] How to assign version numbers from a source header to CMake variables?


Here is the code:


I have got another idea.

Did anybody try to use the C/C++ preprocessor (cpp and eventually including 
the compiler) to output a file in a format which is suitable for processing of 
this data as a project specification for CMake?


Regards,
Markus
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Re: [CMake] Clarification for quoting of parameters for add_executable()