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# -*- cmake -*-
# Taken from http://www.cmake.org/Wiki/CMakeCopyIfDifferent
# Generates a rule to copy each source file from source directory to destination directory.
#
# Typical use -
#
# SET(SRC_FILES head1.h head2.h head3.h)
# COPY_IF_DIFFERENT( /from_dir /to_dir IncludeTargets ${SRC_FILES})
# ADD_TARGET(CopyIncludes ALL DEPENDS ${IncludeTargets})
MACRO(COPY_IF_DIFFERENT FROM_DIR TO_DIR TARGETS)
# Macro to implement copy_if_different for a list of files
# Arguments -
# FROM_DIR - this is the source directory
# TO_DIR - this is the destination directory
# TARGETS - A variable to receive a list of targets
# FILES - names of the files to copy
# TODO: add globing.
SET(AddTargets "")
FOREACH(SRC ${ARGN})
GET_FILENAME_COMPONENT(SRCFILE ${SRC} NAME)
IF("${FROM_DIR}" STREQUAL "")
SET(FROM ${SRC})
ELSE("${FROM_DIR}" STREQUAL "")
SET(FROM ${FROM_DIR}/${SRC})
ENDIF("${FROM_DIR}" STREQUAL "")
IF("${TO_DIR}" STREQUAL "")
SET(TO ${SRCFILE})
ELSE("${TO_DIR}" STREQUAL "")
SET(TO ${TO_DIR}/${SRCFILE})
ENDIF("${TO_DIR}" STREQUAL "")
ADD_CUSTOM_COMMAND(
OUTPUT "${TO}"
COMMAND ${CMAKE_COMMAND} -E copy_if_different ${FROM} ${TO}
DEPENDS ${FROM}
COMMENT "Copying ${SRCFILE} ${TO_DIR}"
)
SET(AddTargets ${AddTargets} ${TARGET})
ENDFOREACH(SRC ${ARGN})
SET(${TARGETS} ${AddTargets})
ENDMACRO(COPY_IF_DIFFERENT FROM_DIR TO_DIR TARGETS)
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