On 19. Mar, 2010, at 16:27 , Verweij, Arjen wrote:
> Hi,
>
> This is a bit length, sorry.
>
>> -----Original Message-----
>> From: Michael Wild [mailto:them...@gmail.com]
>
>
>>> What am I missing? I'm trying again with my simple a/liba.c and
>> b/b/libb.c setup, but this time I start out with liba.cr and libb.cr
>> that need to be converted to liba.c and libb.c.
>>>
>>> function(add_sources target)
>>> # define the <target>_SRCS properties if necessary
>>> get_property(prop_defined GLOBAL PROPERTY ${target}_SRCS DEFINED)
>>> if(NOT prop_defined)
>>> define_property(GLOBAL PROPERTY ${target}_SRCS
>>> BRIEF_DOCS "Sources for the ${target} target"
>>> FULL_DOCS "List of source files for the ${target} target")
>>> endif()
>>> # create list of sources (absolute paths)
>>> set(SRCS)
>>> foreach(src IN LISTS ARGN)
>>
>> I know I used this syntax, but it is relatively new. Please check that
>> it is supported by the CMake version you use...
>
> I'm using cmake 2.8.0 on linux. But eventually it should run on a variety of
> platforms, including windows, altix, ibm and hpux itanium2.
>
>>> string (REGEX REPLACE "^(.+)\\.cr$" "\\1" BASECR ${src} )
>>> string (COMPARE EQUAL ${src} ${BASECR}.cr FILE_IS_C)
>>
>> You're removing .cr from the file and then add it back again and compare
>> it with the original name? that should always be TRUE, right?
>
> Yes. But only if the file in ${src} is of the extension .cr. It is a crude
> way of setting up an identifier for a filetype, then matching if that
> filetype is set and do a custom command based on that, e.g.:
>
> foreach (FILE ${FILE_LIST})
> string (REGEX REPLACE "^(.+)\\.fr$" "\\1" BASEFR ${FILE})
> string (REGEX REPLACE "^(.+)\\.f90r$" "\\1" BASEF90R ${FILE})
> string (REGEX REPLACE "^(.+)\\.cr$" "\\1" BASECR ${FILE})
> string (REGEX REPLACE "^(.+)\\.cppr$" "\\1" BASECPPR ${FILE})
> string (REGEX REPLACE "^(.+)\\.hr$" "\\1" BASEHR ${FILE})
> string (COMPARE EQUAL ${FILE} ${BASEFR}.fr FILE_IS_FORTRAN)
> string (COMPARE EQUAL ${FILE} ${BASEF90R}.f90r FILE_IS_FORTRAN90)
> string (COMPARE EQUAL ${FILE} ${BASECR}.cr FILE_IS_C)
> string (COMPARE EQUAL ${FILE} ${BASECPPR}.cppr FILE_IS_CPP)
> string (COMPARE EQUAL ${FILE} ${BASEHR}.hr FILE_IS_HEADER)
> if ($FILE_IS_...)
> add_custom_command( ... )
> # append to file list
> # some macro
> Elseif ( ... )
> ...
> Else ( ... )
> #foreach
Probably simpler:
# don't use FILE, that is a command...
foreach(fname ${FILE_LIST})
foreach(type f f90 c cpp h)
if(fname MATCHES "^(.+)\\.${type}r$")
string(REGEX REPLACE "r$" "" fbase "${fname}")
if(type STREQUAL f)
add_custom_command(...)
# apend to file list
# some macro
elseif(type STREQUAL f90)
add_custom_command(...)
# ...
# ...
endif()
break()
endif()
endforeach()
endforeach()
> [...]
>
>> You have to call ADD_SOURCES for all your sources BEFORE you do the
>> ADD_LIBRARY call.
>
> I am already doing this, but since the files I was adding to the library
> didn't exist, the call failed. I somehow expected cmake to start executing
> the custom command since there was a previously defined dependency, but
> apparently cmake wasn't set up for the way I'm mistreating it :)
>
> What triggers a custom command to be executed? With your help I have arrived
> at:
You should add a "DEPENDS <input_file1> <input_file2> ..." option to your
ADD_CUSTOM_COMMAND calls, then CMake will know when to invoke it, otherwise it
can't know anything about the dependency.
>
> project(superDuper Fortran)
> enable_language( C )
> cmake_minimum_required(VERSION 2.8)
> #- Add sources for a target
> #
> # ADD_SOURCES(<target> <source1> [<source2> ...])
> #
> function(add_sources target)
> # define the <target>_SRCS properties if necessary
> get_property(prop_defined GLOBAL PROPERTY ${target}_SRCS DEFINED)
> if(NOT prop_defined)
> define_property(GLOBAL PROPERTY ${target}_SRCS
> BRIEF_DOCS "Sources for the ${target} target"
> FULL_DOCS "List of source files for the ${target} target")
> endif()
> # create list of sources (absolute paths)
> set(SRCS)
> foreach(src IN LISTS ARGN)
> string (REGEX REPLACE "^(.+)\\.cr$" "\\1" BASECR ${src} )
> string (COMPARE EQUAL ${src} ${BASECR}.cr FILE_IS_C)
> message ( STATUS src=${src} )
> message ( STATUS basecr=${BASECR} )
> if(NOT IS_ABSOLUTE "${src}")
> get_filename_component(src "${src}" ABSOLUTE)
> endif()
> get_filename_component(path_to_src "${src}" PATH) file(RELATIVE_PATH
> rel_path_to_src "${CMAKE_CURRENT_SOURCE_DIR}" "${path_to_src}")
> set(out_file "${CMAKE_CURRENT_BINARY_DIR}/${rel_path_to_src}/${BASECR}.c")
> add_custom_command(
> OUTPUT "${out_file}"
> COMMAND ${CMAKE_COMMAND} -E copy "${src}" "${out_file}"
> message ( STATUS src="${src}" )
> message ( STATUS out_file="${out_file}" )
> WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}"
> COMMENT "Creating ${out_file}"
> VERBATIM
> )
> list(APPEND SRCS "${out_file}")
> endforeach() set_property(GLOBAL APPEND PROPERTY "${target}_SRCS" "${SRCS}")
> endfunction()
>
> # descend into sub-directories
> add_subdirectory(a)
> add_subdirectory(b)
>
> get_property(super_SRCS GLOBAL PROPERTY super_SRCS)
> message ( STATUS srcs=${super_SRCS})
> add_library(super STATIC ${super_SRCS})
>
>
> The output is:
>
> sx085_260: cmake ../
> -- src=liba.cr
> -- basecr=liba
> -- src=libb.cr
> -- basecr=libb
> --
> srcs=/mnt/usr3/people/verweija/cmake/build/a//liba.c/mnt/usr3/people/verweija/cmake/build/b/b//libb.c
> -- Configuring done
> CMake Error in CMakeLists.txt:
> Cannot find source file "liba.c". Tried extensions .c .C .c++ .cc .cpp
> .cxx .m .M .mm .h .hh .h++ .hm .hpp .hxx .in .txx
>
>
> -- Build files have been written to: /mnt/usr3/people/verweija/cmake/build
>
> So, the messages inside the custom command don't surface which leads me to
> believe that section is not executed at all. I am starting to worry after
> rereading the relevant section in the 4th edition of the book, custom
> commands just add extra lines to the resulting Makefile, but don't get
> executed while generating them :|
>
> Regards,
> Arjen
As said above, the missing DEPENDS option is the problem.
HTH
Michael
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