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if(NOT _c4CatSourcesIncluded)
set(_c4CatSourcesIncluded ON)
#------------------------------------------------------------------------------
# concatenate the source files to an output file, adding preprocessor adjustment
# for correct file/line reporting
function(c4_cat_sources files output umbrella_target)
_c4_cat_sources_create_cat(cat)
c4_to_full_path("${files}" full_files) # we must work with full paths
c4_separate_list("${full_files}" sepfiles) # and use a string instead of a list
c4_dbg("${_c4_prefix}: catting sources to ${output}")
if(NOT EXISTS "${output}")
# the cat command is executed at build time, but we need the output
# file to exist to be able to create the target. so to bootstrap, just
# run the command now
c4_dbg("${_c4_prefix}: creating ${output} for the first time")
execute_process(
COMMAND ${cat} "${sepfiles}" "${output}"
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}"
)
else()
c4_dbg("output exists: ${output}")
endif()
# add a custom command invoking our cat script for the input files
add_custom_command(OUTPUT ${output}
COMMAND ${cat} "${sepfiles}" "${output}"
DEPENDS ${files}
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}"
COMMENT "concatenating sources to ${output}")
if(NOT TARGET ${umbrella_target})
add_custom_target(${umbrella_target} DEPENDS ${output} ${files})
endif()
endfunction(c4_cat_sources)
#------------------------------------------------------------------------------
# get a cat script
function(_c4_cat_sources_create_cat catfile)
# create a script to concatenate the sources
if(WIN32)
set(cat ${CMAKE_BINARY_DIR}/_c4catfiles.bat)
set(cattmp ${CMAKE_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/_c4catfiles.bat)
else()
set(cat ${CMAKE_BINARY_DIR}/_c4catfiles.sh)
set(cattmp ${CMAKE_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/_c4catfiles.sh)
endif()
set(${catfile} ${cat} PARENT_SCOPE)
if(NOT EXISTS ${cat})
if(WIN32)
file(WRITE ${cattmp} "
setlocal EnableDelayedExpansion
set \"src_files=%1\"
set \"out_file=%2\"
echo.>\"out_file%\"
for %%f in (%src_files%) do (
echo.>>\"%out_file%\"
echo.>>\"%out_file%\"
echo \"/*BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB*/\".>>\"%out_file%\"
echo \"/*BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB*/\".>>\"%out_file%\"
echo \"/*BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB*/\".>>\"%out_file%\"
echo \"#line 1 \\\"%%f\\\" // reset __LINE__ and __FILE__ to the correct value\".>>\"%out_file%\"
type %%f>>\"%out_file%\"
)
")
else()
file(WRITE ${cattmp} "#!/bin/sh
src_files=$1
out_file=$2
#echo \"src_files $src_files\"
#echo \"out_file $out_file\"
cat > $out_file << EOF
// DO NOT EDIT.
// this is an auto-generated file, and will be overwritten
EOF
for f in $src_files ; do
cat >> $out_file <<EOF
/*BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB*/
/*BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB*/
/*BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB*/
#line 1 \"$f\"
EOF
cat $f >> $out_file
done
echo \"Wrote output to $out_file\"
")
endif()
# add execute permissions
get_filename_component(catdir ${cat} DIRECTORY)
file(COPY ${cattmp} DESTINATION ${catdir}
FILE_PERMISSIONS
OWNER_READ OWNER_WRITE OWNER_EXECUTE
GROUP_READ GROUP_EXECUTE
WORLD_READ WORLD_EXECUTE
)
endif()
endfunction()
endif(NOT _c4CatSourcesIncluded)
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