Provide pre-compiled libvips+deps for OS X

[lovell]

#42 provided the infrastructure and initial support for 64-bit Windows and Linux binaries.

• OS X

We could use Travis' OS X environment + homebrew e.g. https://github.com/lovell/package-libvips-darwin-x64/blob/master/.travis.yml

If we use this approach a shell script is required to update the paths in the .dylib files - this will look something like:

for each .dylib file (e.g. libvips.42.dylib):
- otool libvips.42.dylib
- install_name_tool -id @rpath/libvips.42.dylib libvips.42.dylib
- for any entry that does not start with /usr/lib (e.g. libGraphicsMagick.3.dylib):
  - install_name_tool -change /usr/local/opt/graphicsmagick/lib/libGraphicsMagick.3.dylib @rpath/libGraphicsMagick.3.dylib libvips.42.dylib

• ARM

Best bet is to use a first generation Raspberry Pi Model B to compile ARMv6 binaries, possibly via Hypriot. Support for ARMv6+ added in v0.12.2.

[lovell]

ARMv6 build machine in action. This might take some time.

[lovell]

Commit a0e034a adds support for building and using pre-compiled libvips binaries on ARMv6+.

This will be included in sharp v0.12.2.

[davej]

How about falling back to sips on OS X. Could that be a viable alternative to compiling libvips?

[lovell]

@davej Installation of libvips is already relatively easy on OS X via:

brew install homebrew/science/vips

This task relates to making it even easier.

[homerjam]

@lovell I think what @davej means is - could you fallback to using sips instead of vips from sharp in order to support using sharp in electron apps on osx.

@davej can you clarify? And that link to sips leads nowhere? Can I find more info on that somewhere else? Thanks!

Just to mention - I'm mega interested in making an electron app that can use sharp cross platform under the hood.

[davej]

@homerjam Here's the cached man page. I ended up creating my own lib to do cross-platform resizing of images on Electron, not the most performant approach but it works: https://github.com/davej/electron-image-resize

[lovell]

There's now an experimental packaging script for OS X and commit dac8654 on the osx-binaries branch takes advantage of the pre-built binaries it creates.

I'd very much appreciate it if everyone interested in this feature can test it by running the following on a Mac where vips is not already installed (or has been removed via brew unlink vips or brew uninstall vips) and report back here.

npm install lovell/sharp#osx-binaries

npm install lovell/sharp#pencil

[sharpfuryz]

I would like to notice: this solution is working unless your app is packed in asar (which is default in electron-bootstrap). In my case it caused errors because nodejs can't resolve libraries inside app.asar, so I unpack to app/ and it fixed this issue.

[lovell]

Commit 36bfbde on the pencil (v0.16.0) branch adds the use of pre-compiled binaries for OS X.

https://travis-ci.org/lovell/sharp/jobs/147224162

[AlekzZz]

I get the following error during installation:

npm install -S lovell/sharp#osx-binaries

npm ERR! git rev-list -n1 osx-binaries: fatal: ambiguous argument 'osx-binaries': unknown revision or path not in the working tree.
npm ERR! git rev-list -n1 osx-binaries: Use '--' to separate paths from revisions, like this:
npm ERR! git rev-list -n1 osx-binaries: 'git [...] -- [...]'
npm ERR! git rev-list -n1 osx-binaries:
npm ERR! git rev-list -n1 osx-binaries: fatal: ambiguous argument 'osx-binaries': unknown revision or path not in the working tree.
npm ERR! git rev-list -n1 osx-binaries: Use '--' to separate paths from revisions, like this:
npm ERR! git rev-list -n1 osx-binaries: 'git [...] -- [...]'
npm ERR! git rev-list -n1 osx-binaries:
npm ERR! git rev-list -n1 osx-binaries: fatal: ambiguous argument 'osx-binaries': unknown revision or path not in the working tree.
npm ERR! git rev-list -n1 osx-binaries: Use '--' to separate paths from revisions, like this:
npm ERR! git rev-list -n1 osx-binaries: 'git [...] -- [...]'
npm ERR! git rev-list -n1 osx-binaries:
npm ERR! Darwin 15.6.0
npm ERR! argv "/usr/local/Cellar/node/6.3.1/bin/node" "/usr/local/bin/npm" "install" "-S" "lovell/sharp#osx-binaries"
npm ERR! node v6.3.1
npm ERR! npm v3.10.5
npm ERR! code 128

[lovell]

@AlekzZz Please use npm install lovell/sharp#pencil (I've updated my comment too, sorry).

[digital-flowers]

if i use "npm install lovell/sharp#pencil" i had the following errors:
clang: error: no such file or directory: 'node_modules/sharp/include'
clang: error: no such file or directory: 'node_modules/sharp/include/glib-2.0'
clang: error: no such file or directory: 'node_modules/sharp/lib/glib-2.0/include'
do i need to add these files manually ?

[lovell]

@digital-flowers Those should be created for you. Are you able to share the full npm install log?

[digital-flowers]

after trials i have found that this only happened if the project directory has space in it is name, i renamed the folder and it is working now

[digital-flowers]

so project folder should have no spaces to make this work

[lovell]

@digital-flowers Thanks, it looks like you ran into nodejs/node-gyp#65

[digital-flowers]

exactly thank you :)

[digital-flowers]

is there any chance to include image magick in this prebuild version? i need it only because of bmp file format.

[lovell]

@digital-flowers The pre-built binaries only include shared libraries I'm willing to support and *magick is a security nightmare. Please install vips yourself if you need to use extra libraries and take your own precautions if using untrusted images.

[digital-flowers]

yes i understand thank you

[lovell]

@digital-flowers Commit da0dc28 on the pencil branch might help workaround the spaces-in-path problem.

[lovell]

v0.16.0 is now available via npm, providing pre-compiled shared library binaries for OS X.