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Diffstat (limited to 'contrib/macdeploy/README.md')
| -rw-r--r-- | contrib/macdeploy/README.md | 17 |
1 files changed, 1 insertions, 16 deletions
diff --git a/contrib/macdeploy/README.md b/contrib/macdeploy/README.md index d1df3062f8..78f61685e1 100644 --- a/contrib/macdeploy/README.md +++ b/contrib/macdeploy/README.md @@ -56,28 +56,13 @@ The `sha256sum` should be `c0c2e7bb92c1fee0c4e9f3a485e4530786732d6c6dd9e9f418c28 ## Deterministic macOS App Notes -macOS Applications are created in Linux by combining a recent `clang` and the Apple -`binutils` (`ld`, `ar`, etc). +macOS Applications are created in Linux using a recent LLVM. 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 `-isysroot`, which are all necessary when building for macOS. -Apple's version of `binutils` (called `cctools`) contains lots of functionality missing in the -FSF's `binutils`. In addition to extra linker options for frameworks and sysroots, several -other tools are needed as well. These do not build under Linux, so they have been patched to -do so. The work here was used as a starting point: [mingwandroid/toolchain4](https://github.com/mingwandroid/toolchain4). - -In order to build a working toolchain, the following source packages are needed from -Apple: `cctools`, `dyld`, and `ld64`. - -These tools inject timestamps by default, which produce non-deterministic binaries. The -`ZERO_AR_DATE` environment variable is used to disable that. - -This version of `cctools` has been patched to use the current version of `clang`'s headers -and its `libLTO.so` rather than those from `llvmgcc`, as it was originally done in `toolchain4`. - To complicate things further, all builds must target an Apple SDK. These SDKs are free to download, but not redistributable. See the SDK Extraction notes above for how to obtain it. |