1 | # -*- mode: cmake; -*- |
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2 | # |
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3 | # |
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4 | # |
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5 | |
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6 | function(add_lex GEN_CPP_FILE INFILE PREFIX) |
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7 | string(REGEX REPLACE "^.*/" "" FILE ${INFILE}) |
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8 | string(REPLACE ".l" "" NAME ${FILE}) |
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9 | |
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10 | set(_GEN_CPP_FILE ${CMAKE_CURRENT_BINARY_DIR}/${NAME}.cpp) |
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11 | set(_SOURCE_CPP_FILE ${CMAKE_CURRENT_SOURCE_DIR}/${NAME}.cc) |
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12 | |
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13 | message("add_lex ${${GEN_CPP_FILE}} ${INFILE}...") |
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14 | |
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15 | if(NOT ${PREFIX} STREQUAL "") |
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16 | set(OPT "-P${PREFIX}") |
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17 | set(_orig ${CMAKE_CURRENT_SOURCE_DIR}/libparse.cc) |
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18 | else(NOT ${PREFIX} STREQUAL "") |
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19 | set(OPT "-s") |
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20 | set(_orig ${CMAKE_CURRENT_SOURCE_DIR}/scanner.cc) |
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21 | endif(NOT ${PREFIX} STREQUAL "") |
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22 | |
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23 | add_custom_command(OUTPUT ${_GEN_CPP_FILE} |
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24 | COMMAND ${FLEX} ${OPT} -o ${_GEN_CPP_FILE}.tmp ${INFILE} |
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25 | # COMMAND cp ${_SOURCE_CPP_FILE} ${_GEN_CPP_FILE} |
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26 | COMMAND ${CMAKE_COMMAND} -E copy_if_different ${_GEN_CPP_FILE}.tmp ${_GEN_CPP_FILE} |
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27 | COMMAND ${CMAKE_COMMAND} -E copy_if_different ${_SOURCE_CPP_FILE} ${_GEN_CPP_FILE} |
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28 | COMMAND ls -l ${_GEN_CPP_FILE}.tmp ${_GEN_CPP_FILE} |
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29 | # COMMAND ls -l ${_GEN_CPP_FILE}.tmp ${_GEN_CPP_FILE} ${_orig} |
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30 | |
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31 | DEPENDS ${INFILE} |
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32 | COMMENT "Compiling '${INFILE}'..." |
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33 | ) |
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34 | |
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35 | set(${GEN_CPP_FILE} ${_GEN_CPP_FILE} PARENT_SCOPE) |
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36 | endfunction() |
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37 | |
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38 | # |
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39 | # |
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40 | # |
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41 | function(check_lex_version GEN_VERSION) |
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42 | execute_process(COMMAND ${FLEX} --version |
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43 | OUTPUT_VARIABLE CMAKE_FLEX_VERSION) |
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44 | string(REGEX REPLACE "flex ([0-9]+)\\.([0-9]+).*$" "\\1" |
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45 | CMAKE_FLEX_MAJOR ${CMAKE_FLEX_VERSION}) |
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46 | string(REGEX REPLACE "flex ([0-9]+)\\.([0-9]+).*" "\\2" |
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47 | CMAKE_FLEX_MINOR ${CMAKE_FLEX_VERSION}) |
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48 | string(REGEX REPLACE "flex ([0-9]+)\\.([0-9]+)\\.([0-9]+).*" "\\3" |
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49 | CMAKE_FLEX_PATCH ${CMAKE_FLEX_VERSION}) |
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50 | |
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51 | set(_GEN_VERSION 0) |
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52 | if (${CMAKE_FLEX_MAJOR} EQUAL 2 AND ${CMAKE_FLEX_MINOR} EQUAL 5) |
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53 | if(${CMAKE_FLEX_PATCH} GREATER 33) |
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54 | set(_GEN_VERSION 1) |
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55 | endif(${CMAKE_FLEX_PATCH} GREATER 33) |
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56 | endif (${CMAKE_FLEX_MAJOR} EQUAL 2 AND ${CMAKE_FLEX_MINOR} EQUAL 5) |
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57 | |
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58 | set(${GEN_VERSION} ${_GEN_VERSION} PARENT_SCOPE) |
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59 | message(STATUS "Flex version '${CMAKE_FLEX_MAJOR}' '${CMAKE_FLEX_MINOR}' '${CMAKE_FLEX_PATCH}' ${_GEN_VERSION}") |
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60 | endfunction() |
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