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annotate cmake/Modules/FindGnuTLS.cmake @ 801:728cc60a7be5

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Test version only on found library
author Sebastien Decugis <sdecugis@nict.go.jp>
date Tue, 21 Aug 2012 22:24:14 +0200
parents 36821971d47b
children 6dde862ba119
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050f4f6f9f2a Added new FindGNUTLS cmake module
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1 # - Find gnutls
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2 # Find the native GNUTLS includes and library
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3 #
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4 # GNUTLS_FOUND - True if gnutls found.
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5 # GNUTLS_INCLUDE_DIR - where to find gnutls.h, etc.
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6 # GNUTLS_LIBRARIES - List of libraries when using gnutls.
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7 # GNUTLS_VERSION_210 - true if GnuTLS version is >= 2.10.0 (does not require additional separate gcrypt initialization)
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8 # GNUTLS_VERSION_300 - true if GnuTLS version is >= 3.00.0 (x509 verification functions changed)
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10 if (GNUTLS_INCLUDE_DIR AND GNUTLS_LIBRARIES)
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11 set(GNUTLS_FIND_QUIETLY TRUE)
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12 endif (GNUTLS_INCLUDE_DIR AND GNUTLS_LIBRARIES)
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13
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14 # Include dir
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15 find_path(GNUTLS_INCLUDE_DIR
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16 NAMES
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17 gnutls.h
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18 gnutls/gnutls.h
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19 )
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21 # Library
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22 find_library(GNUTLS_LIBRARY
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23 NAMES gnutls
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24 )
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26 # handle the QUIETLY and REQUIRED arguments and set GNUTLS_FOUND to TRUE if
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27 # all listed variables are TRUE
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28 INCLUDE(FindPackageHandleStandardArgs)
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29 FIND_PACKAGE_HANDLE_STANDARD_ARGS(GNUTLS DEFAULT_MSG GNUTLS_LIBRARY GNUTLS_INCLUDE_DIR)
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31 IF(GNUTLS_FOUND)
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32 SET( GNUTLS_LIBRARIES ${GNUTLS_LIBRARY} )
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33 ELSE(GNUTLS_FOUND)
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34 SET( GNUTLS_LIBRARIES )
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35 ENDIF(GNUTLS_FOUND)
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37 # Lastly make it so that the GNUTLS_LIBRARY and GNUTLS_INCLUDE_DIR variables
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38 # only show up under the advanced options in the gui cmake applications.
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39 MARK_AS_ADVANCED( GNUTLS_LIBRARY GNUTLS_INCLUDE_DIR )
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41 # Now check if the library is recent. gnutls_hash was added in 2.10.0.
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42 # Also test library is even more recent. gnutls_x509_trust_list_verify_crt was added in 3.00.0.
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43 IF(GNUTLS_FOUND)
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44 IF( NOT( "${GNUTLS_VERSION_TEST_FOR}" STREQUAL "${GNUTLS_LIBRARY}" ))
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45 INCLUDE (CheckLibraryExists)
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46 MESSAGE(STATUS "Rechecking GNUTLS_VERSION_210 and GNUTLS_VERSION_300")
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47 UNSET(GNUTLS_VERSION_210)
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48 UNSET(GNUTLS_VERSION_210 CACHE)
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49 UNSET(GNUTLS_VERSION_300)
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50 UNSET(GNUTLS_VERSION_300 CACHE)
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51 GET_FILENAME_COMPONENT(GNUTLS_PATH ${GNUTLS_LIBRARY} PATH)
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52 CHECK_LIBRARY_EXISTS(gnutls gnutls_hash ${GNUTLS_PATH} GNUTLS_VERSION_210)
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53 CHECK_LIBRARY_EXISTS(gnutls gnutls_x509_trust_list_verify_crt ${GNUTLS_PATH} GNUTLS_VERSION_300)
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54 SET( GNUTLS_VERSION_TEST_FOR ${GNUTLS_LIBRARY} CACHE INTERNAL "Version the test was made against" )
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55 ENDIF (NOT( "${GNUTLS_VERSION_TEST_FOR}" STREQUAL "${GNUTLS_LIBRARY}" ))
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56 ENDIF(GNUTLS_FOUND)
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