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mac build: README: mention Xcode path intricacies

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2021-07-19 21:46:17 +02:00
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contrib/osx/README.md
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@@ -28,7 +28,7 @@ Notes about compatibility with different macOS versions:
We currently build the release binaries on macOS 10.14.6, and these seem to run on
10.13 or newer.
Before starting, make sure that the Xcode command line tools are installed (e.g. you have `git`).
Before starting, you should install `brew`.
#### Notes about reproducibility
@@ -41,6 +41,19 @@ Before starting, make sure that the Xcode command line tools are installed (e.g.
- Builders need to use the same version of Xcode; and note that
full Xcode and Xcode commandline tools differ!
You should build with Xcode 11.3.1 (full Xcode).
The path for Xcode should be exactly as follows:
```
$ xcode-select -p
/Users/vagrant/Downloads/Xcode.app/Contents/Developer
$ xcrun --show-sdk-path
/Users/vagrant/Downloads/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk
```
Note: make sure neither command above refers to the Xcode command line tools!
If so, rename the cli tools, e.g.
```
$ mv /Library/Developer/CommandLineTools /Library/Developer/CommandLineTools2
```
As a sanity check, make sure `$ gcc --version` consistently refers to the full Xcode.
- Make sure that you are building from a fresh clone of electrum
(or run e.g. `git clean -ffxd` to rm all local changes).