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35 # - Define macro to check if image conversion using ImageMagick convert
36 # actually works, because recent changes to it made it necessary to set
37 # a number of flags in /etc/ImageMagick-6/policy.xml. If a sample
38 # conversion fails due to this, the user is informed about this being
41 # GMX_TEST_IMAGEMAGICK(VARIABLE)
43 # VARIABLE will be set in the cache to either true or false
44 # if convert is working or not.
46 function(GMX_TEST_IMAGEMAGICK VARIABLE)
47 if(NOT ${ImageMagick_CONVERT_FOUND})
48 MESSAGE(STATUS "No image conversion possible without ImageMagick")
50 elseif(NOT DEFINED ${VARIABLE})
51 set(TEMPDIR "${CMAKE_CURRENT_BINARY_DIR}/imagemagicktmp")
52 FILE(MAKE_DIRECTORY ${TEMPDIR})
53 set(SAMPLE_INPUT "${CMAKE_CURRENT_SOURCE_DIR}/cmake/TestImageMagickConvert.pdf")
54 set(SAMPLE_OUTPUT "${TEMPDIR}/TestImageMagickConvert.png")
56 COMMAND ${ImageMagick_convert_EXECUTABLE} ${SAMPLE_INPUT} -antialias -quality 03 -quiet -pointsize 12 -density 1200 -units PixelsPerInch ${SAMPLE_OUTPUT}
57 RESULT_VARIABLE TEST_OUTPUT
61 if (EXISTS ${SAMPLE_OUTPUT})
69 MESSAGE(${type_} "Could not convert sample image, ImageMagick convert can not be used. A possible way to fix it can be found here: https://alexvanderbist.com/2018/fixing-imagick-error-unauthorized")
72 FILE(REMOVE_RECURSE ${TEMPDIR})
74 if(NOT DEFINED ${VARIABLE})
75 set(${VARIABLE} ${value_} CACHE INTERNAL "Test if image conversion works")
76 mark_as_advanced(${VARIABLE})