How to choose ImageMagick version

[DannyAziz]

I'm trying to run Wand on AWS lambda, AWS lambda comes built-in with a version of Imagemagick but that version doesn't have the delegates I need

I've figured out how to get a different version of ImageMagick onto the system but the built-in one is still available at /usr/bin/

I've set MAGICK_HOME to the path of the new version but Wand still seems to be using the built-in version

library_paths() returns this:

[
        [
            "/opt/bin/lib/libMagickWand.so",
            "/opt/bin/lib/libMagickWand.so"
        ],
        [
            "libMagickWand.so.5",
            "libMagickWand.so.5"
        ],
        [
            "/opt/bin/lib/libMagickWandHDRI.so",
            "/opt/bin/lib/libMagickWandHDRI.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWandHDRI-2.so",
            "/opt/bin/lib/libMagickWandHDRI-2.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-7.so",
            "/opt/bin/lib/libMagickWand-7.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-7HDRI.so",
            "/opt/bin/lib/libMagickWand-7HDRI.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-7HDRI-2.so",
            "/opt/bin/lib/libMagickWand-7HDRI-2.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-7.Q8.so",
            "/opt/bin/lib/libMagickWand-7.Q8.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-7.Q8HDRI.so",
            "/opt/bin/lib/libMagickWand-7.Q8HDRI.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-7.Q8HDRI-2.so",
            "/opt/bin/lib/libMagickWand-7.Q8HDRI-2.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-7.Q16.so",
            "/opt/bin/lib/libMagickWand-7.Q16.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-7.Q16HDRI.so",
            "/opt/bin/lib/libMagickWand-7.Q16HDRI.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-7.Q16HDRI-2.so",
            "/opt/bin/lib/libMagickWand-7.Q16HDRI-2.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-6.so",
            "/opt/bin/lib/libMagickWand-6.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-6HDRI.so",
            "/opt/bin/lib/libMagickWand-6HDRI.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-6HDRI-2.so",
            "/opt/bin/lib/libMagickWand-6HDRI-2.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-Q16.so",
            "/opt/bin/lib/libMagickWand-Q16.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-Q16HDRI.so",
            "/opt/bin/lib/libMagickWand-Q16HDRI.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-Q16HDRI-2.so",
            "/opt/bin/lib/libMagickWand-Q16HDRI-2.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-Q8.so",
            "/opt/bin/lib/libMagickWand-Q8.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-Q8HDRI.so",
            "/opt/bin/lib/libMagickWand-Q8HDRI.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-Q8HDRI-2.so",
            "/opt/bin/lib/libMagickWand-Q8HDRI-2.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-6.Q16.so",
            "/opt/bin/lib/libMagickWand-6.Q16.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-6.Q16HDRI.so",
            "/opt/bin/lib/libMagickWand-6.Q16HDRI.so"
        ],
        [
            null,
            null
        ],
        [
            "/opt/bin/lib/libMagickWand-6.Q16HDRI-2.so",
            "/opt/bin/lib/libMagickWand-6.Q16HDRI-2.so"
        ],
        [
            null,
            null
        ]

Without MAGICK_HOME being set, it only returns

[
            "libMagickWand.so.5",
            "libMagickWand.so.5"
],

I'm wondering if there is a way to tell Wand what version of ImageMagick to use?

[emcconville]

Try again with the latest 0.5.7. There was a library-ordering revision that should honer MAGICK_HOME before system paths.

However, I believe there would be a benefit for users to specify ImageMagick's version suffix. Perhaps another environmental variable "WAND_MAGICK_LIBRARY_SUFFIX", or something that can be set outside of a codechange.