hi,
I need to compile a lot of files generated by some program. I want to generate
unix-makefiles. the problem is, that linking command generated by cmake is much
to large (input line too long error). It's is not possible to split this files
to more libs (even if it would be, I would need about 15 libs). If I generate
nmake-makefiles, somthing about 2 libs would be enough. 2 libs would be ok, but
I need unix-makefiles. I can't change directory structure. I thought it would
be ok if I create object's for all cpp file and then link it (then I can put
*.o to linker and line is short). But I don't know how can I run command that
compile all cpp files with all flags, includes and defines. I tried to overcome
this by creating custom command like:
get_directory_property(DEFINITIONS COMPILE_DEFINITIONS)
get_directory_property(INC_DIRS INCLUDE_DIRECTORIES)
FOREACH(INC_DIR ${INC_DIRS})
SET (IDIRS ${IDIRS} -I${INC_DIR})
ENDFOREACH(INC_DIR)
FOREACH(MFILE ${MED_FILES})
GET_FILENAME_COMPONENT(_file_we ${MFILE} NAME_WE)
SET(_out "${_file_we}.o")
ADD_CUSTOM_COMMAND(
OUTPUT ${_out}
COMMAND ${CMAKE_CXX_COMPILER} -c -W:c++:.c ${CMAKE_CXX_FLAGS}
${DEFINITIONS} ${IDIRS} -o ${_out} ${MFILE}
ARGS
DEPENDS ${MFILE}
)
SET(_outputs ${_outputs} ${_out})
ENDFOREACH(MFILE)
add_custom_target(RUOAM
DEPENDS ${_outputs}
)
And this is nearly working. One problem is, that there are "\" chars in flags
and it couse problems. I tried to remove it whith:
STRING(REPLACE '\\' " " FLAGS ${CMAKE_CXX_FLAGS})
but it didn't work. (why?)
The best solution for me would be to run CMAKE_XXX_COMPILE_OBJECT for each cpp
file, but how can I do this?
my compile object command:
set(CMAKE_CXX_COMPILE_OBJECT "<CMAKE_CXX_COMPILER> -c -W:c++:.c <DEFINES>
<FLAGS> -o <OBJECT> <SOURCE>")
Br,
Marek
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