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build: update prerequisites on progress towards Python 3 #25766

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build: update prerequisites on progress towards Python 3 #25766

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2401b0d
build: update prerequisites on progress towards Python 3
cclauss Jan 28, 2019
35ec6a2
Fix typo: 'nad' --> 'and'
cclauss Jan 28, 2019
6b3f94e
Fix remark-lint warnings
cclauss Jan 28, 2019
7f9f32c
Link up to Prerequisites
Trott Jan 28, 2019
8ccb148
Drop all mention of Python 2.6
cclauss Jan 29, 2019
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10 changes: 6 additions & 4 deletions BUILDING.md
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Expand Up @@ -164,7 +164,9 @@ explains how to install all prerequisites.

* `gcc` and `g++` 4.9.4 or newer, or
* `clang` and `clang++` 3.4.2 or newer (macOS: latest Xcode Command Line Tools)
* Python 2.6 or 2.7
* Python 2.7
* Python 2.7 end of life is in 2019 so a transition to Python 3 is underway.
* Python 3.5, 3.6, and 3.7 are experimental.
* GNU Make 3.81 or newer

On macOS, install the `Xcode Command Line Tools` by running
Expand Down Expand Up @@ -192,8 +194,8 @@ The `-j4` option will cause `make` to run 4 simultaneous compilation jobs which
may reduce build time. For more information, see the
[GNU Make Documentation](https://www.gnu.org/software/make/manual/html_node/Parallel.html).

Note that the above requires that `python` resolve to Python 2.6 or 2.7
and not a newer version.
Note that the above requires that `python` resolve to Python 2.7 and not a newer
version. See [Prerequisites](#prerequisites).

After building, setting up [firewall rules](tools/macos-firewall.sh) can avoid
popups asking to accept incoming network connections when running tests.
Expand Down Expand Up @@ -400,7 +402,7 @@ $ backtrace

Prerequisites:

* [Python 2.6 or 2.7](https://www.python.org/downloads/)
* [Python 2.7](https://www.python.org/downloads/)
* The "Desktop development with C++" workload from
[Visual Studio 2017](https://www.visualstudio.com/downloads/) or the
"Visual C++ build tools" workload from the
Expand Down