Adding Brotli Perl modules for exiftool to find

[hsivonen]

Output of brew config

HOMEBREW_VERSION: 4.2.1
ORIGIN: https://github.com/Homebrew/brew
HEAD: 7817518992920b8dbd15e48a5e6c5ad768f4ba8b
Last commit: 6 days ago
Core tap JSON: 30 Dec 14:24 UTC
Core cask tap JSON: 30 Dec 14:24 UTC
HOMEBREW_PREFIX: /opt/homebrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_MAKE_JOBS: 8
Homebrew Ruby: 3.1.4 => /opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.1.4/bin/ruby
CPU: octa-core 64-bit arm_firestorm_icestorm
Clang: 15.0.0 build 1500
Git: 2.39.3 => /Library/Developer/CommandLineTools/usr/bin/git
Curl: 8.4.0 => /usr/bin/curl
macOS: 14.2.1-arm64
CLT: 15.1.0.0.1.1700200546
Xcode: 15.1
Rosetta 2: false

Output of brew doctor

Your system is ready to brew.

Description of issue

When invoking exiftool 12.70 on a JPEG XL image generated with the cjxl tool (which compresses metadata with Brotli by default), exiftool says (among other output):
"Install IO::Uncompress::Brotli to decode Brotli-compressed metadata"

Installing the required pod from CPAN to the default location (/Library/Perl/5.30/darwin-thread-multi-2level/) does not help. Making a symlink from /opt/homebrew/Cellar/exiftool/12.70/libexec/lib/IO to /Library/Perl/5.30/darwin-thread-multi-2level/IO does not help.

What's the right way to install the requisite Perl module so that brew-installed exiftool will find it?

[cho-m]

exiftool should be using macOS Perl. I think Sonoma has some remnants of Perl 5.30 along with Perl 5.34. We use latter (i.e. shebang will point to /usr/bin/perl5.34).

Maybe try reinstalling pod with /usr/bin/cpan5.34? It looks like your default location was for Perl 5.30.

[Qhilm]

This solved ist for me:

sudo /usr/bin/cpan IO::Uncompress::Brotli
ln -s /Library/Perl/5.34/darwin-thread-multi-2level/IO  /opt/homebrew/Cellar/exiftool/12.76/libexec/lib

Does not work for me, for what it's worth (macOS 15.0.1).

I get "loadable library and perl binaries are mismatched (got handshake key 0x10200080, needed 0xfb80080)" when I run exiftool -tagsFromFile

[cmahnke]

That look like you're not using the bundled / system perl to run exiftool, maybe there are environment variables that change the used interpreter?
You can also try to link the module from the library path that your interpreter uses, it might be somewhere below /opt/homebrew/Cellar/perl/5.40.0/lib/perl5/ (given it's installed there)

[Qhilm]

Indeed, I had even written it above, I forgot about it:

PERL5LIB=/Users/myuser/perl5/lib/perl5
PERL_LOCAL_LIB_ROOT=/Users/myuser/perl5
PERL_MB_OPT=--install_base "/Users/myuser/perl5"
PERL_MM_OPT=INSTALL_BASE=/Users/myuser/perl5

I removed these and it worked, just had to add -ignoreMinorErrors. I don't understand the "Wrapped JXL codestream in ISO BMFF container" error, but it's ingnored with this flag.

[cmahnke]

It's just a warning, as you wrote...
I've seen it before, maybe this goes away if you run a dev version of exiftool. Note, that the stable (production) release is always a bit behind, see https://exiftool.org/history.html

[AngelaDMerkel]

This solved ist for me:

sudo /usr/bin/cpan IO::Uncompress::Brotli
ln -s /Library/Perl/5.34/darwin-thread-multi-2level/IO  /opt/homebrew/Cellar/exiftool/12.76/libexec/lib

This also solved it for me, but I am also not a fan of having to install using sudo