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annotate cmake/FindSysQueue.cmake @ 648:5bd9424a523a

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misc: extreme cleanup
author David Demelier <markand@malikania.fr>
date Thu, 04 Oct 2018 21:17:55 +0200
parents 01e01777ff50
children
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01e01777ff50 CMake: initial import of CMake modules, closes #720
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1 # FindSysQueue
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2 # ------------
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3 #
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4 # Locate and check sys/queue.h presence
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5 #
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6 # SYSQUEUE_FOUND - system has sys/queue.h
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7 # SYSQUEUE_SLIST - queue.h has SLIST macros
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8 # SYSQUEUE_STAILQ - queue.h has STAILQ macros
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9 # SYSQUEUE_LIST - queue.h has LIST macros
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10 # SYSQUEUE_TAILQ - queue.h has TAILQ macros
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11 # SYSQUEUE_SIMPLEQ - queue.h has SIMPLEQ macros
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12 # SYSQUEUE_CIRCLEQ - queue.h has CIRCLEQ macros
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13 # SYSQUEUE_TAILQ - queue.h has TAILQ macros
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14 #
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15 # Some macros are not available on every systems, these variables are
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16 # defined if they are found in the queue.h file
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17 #
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18 # SYSQUEUE_SLIST_FOREACH - queue.h has SLIST_FOREACH macros
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19 # SYSQUEUE_SLIST_FOREACH_SAFE - queue.h has SLIST_FOREACH_SAFE macros
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20 # SYSQUEUE_STAILQ_FOREACH - queue.h has STAILQ_FOREACH macros
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21 # SYSQUEUE_STAILQ_FOREACH - queue.h has STAILQ_FOREACH_SAFE macros
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22 # SYSQUEUE_LIST_FOREACH - queue.h has LIST_FOREACH macros
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23 # SYSQUEUE_LIST_FOREACH_SAFE - queue.h has LIST_FOREACH_SAFE macros
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24 # SYSQUEUE_TAILQ_FOREACH - queue.h has TAILQ_FOREACH macros
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25 # SYSQUEUE_TAILQ_FOREACH - queue.h has TAILQ_FOREACH_SAFE macros
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26 #
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27
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28 include(CheckIncludeFile)
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29 include(CheckSymbolExists)
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30
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31 check_include_file(sys/queue.h SYSQUEUE_FOUND)
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32 if (SYSQUEUE_FOUND)
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33 foreach (type "SLIST" "STAILQ" "LIST" "TAILQ" "SIMPLEQ" "CIRCLEQ")
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34 check_symbol_exists(${type}_HEAD sys/queue.h SYSQUEUE_${type})
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35
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36 if (SYSQUEUE_${type})
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37 # Check for _FOREACH.
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38 check_symbol_exists(
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39 ${type}_FOREACH
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40 sys/queue.h
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41 SYSQUEUE_${type}_FOREACH
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42 )
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43
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44 # Check for _FOREACH_SAFE.
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45 check_symbol_exists(
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46 ${type}_FOREACH_SAFE
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47 sys/queue.h
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48 SYSQUEUE_${type}_FOREACH_SAFE
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49 )
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50 endif ()
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51 endforeach ()
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52 endif ()