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Diffstat (limited to 'doc/README_osx.txt')
-rw-r--r-- | doc/README_osx.txt | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/doc/README_osx.txt b/doc/README_osx.txt index a572c7a241..f589bfc676 100644 --- a/doc/README_osx.txt +++ b/doc/README_osx.txt @@ -1,12 +1,12 @@ -Deterministic OSX Dmg Notes. +Deterministic OS X Dmg Notes. -Working OSX DMGs are created in Linux by combining a recent clang, +Working OS X DMGs are created in Linux by combining a recent clang, the Apple's binutils (ld, ar, etc), and DMG authoring tools. Apple uses clang extensively for development and has upstreamed the necessary functionality so that a vanilla clang can take advantage. It supports the use of -F, -target, -mmacosx-version-min, and --sysroot, which are all necessary -when building for OSX. A pre-compiled version of 3.2 is used because it was not +when building for OS X. A pre-compiled version of 3.2 is used because it was not available in the Precise repositories at the time this work was started. In the future, it can be switched to use system packages instead. @@ -29,18 +29,18 @@ originally done in toolchain4. To complicate things further, all builds must target an Apple SDK. These SDKs are free to download, but not redistributable. -To obtain it, register for a developer account, then download the XCode 6.1.1 dmg: +To obtain it, register for a developer account, then download the Xcode 6.1.1 dmg: https://developer.apple.com/devcenter/download.action?path=/Developer_Tools/xcode_6.1.1/xcode_6.1.1.dmg This file is several gigabytes in size, but only a single directory inside is needed: Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk Unfortunately, the usual linux tools (7zip, hpmount, loopback mount) are incapable of opening this file. -To create a tarball suitable for gitian input, mount the dmg in OSX, then create it with: +To create a tarball suitable for Gitian input, mount the dmg in OS X, then create it with: $ tar -C /Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/ -czf MacOSX10.9.sdk.tar.gz MacOSX10.9.sdk -The gitian descriptors build 2 sets of files: Linux tools, then Apple binaries +The Gitian descriptors build 2 sets of files: Linux tools, then Apple binaries which are created using these tools. The build process has been designed to avoid including the SDK's files in Gitian's outputs. All interim tarballs are fully deterministic and may be freely redistributed. @@ -64,20 +64,20 @@ Ideally, the creation could be fixed and genisoimage would no longer be necessar Background images and other features can be added to DMG files by inserting a .DS_Store before creation. The easiest way to create this file is to build a -DMG without one, move it to a device running OSX, customize the layout, then +DMG without one, move it to a device running OS X, customize the layout, then grab the .DS_Store file for later use. That is the approach taken here. -As of OSX Mavericks (10.9), using an Apple-blessed key to sign binaries is a +As of OS X Mavericks (10.9), using an Apple-blessed key to sign binaries is a requirement in order to satisfy the new Gatekeeper requirements. Because this private key cannot be shared, we'll have to be a bit creative in order for the build process to remain somewhat deterministic. Here's how it works: -- Builders use gitian to create an unsigned release. This outputs an unsigned +- Builders use Gitian to create an unsigned release. This outputs an unsigned dmg which users may choose to bless and run. It also outputs an unsigned app structure in the form of a tarball, which also contains all of the tools that have been previously (deterministically) built in order to create a final dmg. - The Apple keyholder uses this unsigned app to create a detached signature, using the script that is also included there. -- Builders feed the unsigned app + detached signature back into gitian. It +- Builders feed the unsigned app + detached signature back into Gitian. It uses the pre-built tools to recombine the pieces into a deterministic dmg. |