Configuring a Heroku App

In order to use this buildpack in addition to a standard buildpack such as node, we need to use the multi buildpack

New App

heroku apps:create build-gm -buildpack https://github.com/ddollar/heroku-buildpack-multi.git

Update an Existing App

heroku config:set BUILDPACK_URL=https://github.com/ddollar/heroku-buildpack-multi.git

Buildpack configuration file

A buildpack configuration file .buildpacks needs to be added to the project

.buildpacks

https://github.com/long/buildpack-custom-graphicsmagick.git
https://github.com/heroku/heroku-buildpack-nodejs.git

Build

Libraries and executables for GraphicsMagick and supporting libraries are built using the scripts located under the build/scripts directory.

Each build script is self-contained and are run separately to build the necessary library components.

The build results are installed in a clean directory and packaged up into an archive that is stored in S3 and will be used for the custom buildpack installation.

Build Source

Build source is located in S3

s3://buildpacks.rayburst.com/custom-graphicsmagick/src

Build Resutls

Build results are located in S3

s3://buildpacks.rayburst.com/custom-graphicsmagick/vendor

Build Order

1. zlib
2. libpng
   requires zlib
3. tiff
   requires zlib
4. yasm
5. libjpeg-turbo
   requires yasm, zlib
6. lcms2
   requires libjpeg-turbo, tiff, zlib
7. gm
   requries libpng, tiff, libjpeg-turbo, lcms2, zlib

Versions

zlib 1.2.8
libpng 1.5.17
tiff 4.0.3
yasm 1.2.0
libjpeg-turbo 1.3.1
lcms2 2.4
GraphicsMagick 1.3.18

Building on Heroku

This project should be installed on Heroku using the null buildpack in order to pre-build the libraries and executables

heroku apps:create build-gm -buildpack http://github.com/ryandotsmith/null-buildpack.git
heroku run bash

build/build_all /tmp/vendor_build /tmp/vendor \
https://s3.amazonaws.com/buildpacks.rayburst.com/custom-graphicsmagick/src \
buildpacks.rayburst.com custom-graphicsmagick/vendor \
[AWS KEY] [AWS SECRET]