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Generates a rule to copy each source file from source directory to
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destination directory.
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Typical use:
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SET(SRC_FILES head1.h head2.h head3.h)
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COPY_IF_DIFFERENT( /from_dir /to_dir ${SRC_FILES} IncludeTargets "Includes")
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ADD_TARGET(CopyIncludes ALL DEPENDS ${IncludeTargets})
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will generate rules that look
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CopyIncludes: $(CopyIncludes_DEPEND_LIBS) \
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Include\head1.h \
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Include\head2.h \
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Include\head3.h
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Include\head1.h:
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@echo Building Copying head1.h /to_dir head1.h...
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cmake.exe -E copy_if_different /from_dir/head1.h /to_dir/head1.h
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The macro code is:
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MACRO(COPY_IF_DIFFERENT FROM_DIR TO_DIR FILES TARGETS TAGS)
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# Macro to implement copy_if_different for a list of files
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# Arguments -
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# FROM_DIR - this is the source directory
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# TO_DIR - this is the destination directory
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# FILES - names of the files to copy
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# TODO: add globing.
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# TARGETS - List of targets
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# TAGS - Since only the file name is used
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# to generate rules, pre-pend a user
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# supplied tag to prevent duplicate rule errors.
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SET(AddTargets "")
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FOREACH(SRC ${FILES})
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GET_FILENAME_COMPONENT(SRCFILE ${SRC} NAME)
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# Command to copy the files to ${STEP1}/src, if changed.
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SET(TARGET "${TAGS}/${SRCFILE}")
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IF("${FROM_DIR}" STREQUAL "")
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SET(FROM ${SRC})
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ELSE("${FROM_DIR}" STREQUAL "")
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SET(FROM ${FROM_DIR}/${SRC})
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ENDIF("${FROM_DIR}" STREQUAL "")
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IF("${TO_DIR}" STREQUAL "")
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SET(TO ${SRCFILE})
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ELSE("${TO_DIR}" STREQUAL "")
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SET(TO ${TO_DIR}/${SRCFILE})
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ENDIF("${TO_DIR}" STREQUAL "")
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ADD_CUSTOM_COMMAND(
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OUTPUT ${TARGET}
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COMMAND ${CMAKE_COMMAND}
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ARGS -E copy_if_different ${FROM} ${TO}
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COMMENT "Copying ${SRCFILE} ${TO_DIR}"
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)
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SET(AddTargets ${AddTargets} ${TARGET})
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ENDFOREACH(SRC ${FILES})
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SET(${TARGETS} ${AddTargets})
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ENDMACRO(COPY_IF_DIFFERENT FROM_DIR TO_DIR FILES TARGETS TAGS)
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----
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This page was initially populated by conversion from its [original location](https://public.kitware.com/Wiki/CMakeCopyIfDifferent) in another wiki. |