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docs: improve some $(brew --prefix) usage #14738

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Feb 21, 2023
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docs: improve some $(brew --prefix) usage #14738

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5b80085
Improve unversioned python location specification
aristocrates Feb 21, 2023
11f94af
docs: fix up more `brew --prefix` usage.
MikeMcQuaid Feb 21, 2023
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4 changes: 2 additions & 2 deletions docs/Gems,-Eggs-and-Perl-Modules.md
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Expand Up @@ -60,7 +60,7 @@ which therefore don’t need sudo.

_This is only recommended if you **don't** use rbenv or RVM._

Brewed Ruby installs executables to `$(brew --prefix)/opt/ruby/bin`
Brewed Ruby installs executables to `$(brew --prefix ruby)/bin`
without sudo. You should add this to your path. See the caveats in the
`ruby` formula for up-to-date information.

Expand Down Expand Up @@ -91,7 +91,7 @@ Just install everything into the Homebrew prefix like this:
echo "export GEM_HOME=\"$(brew --prefix)\"" >> ~/.bashrc
```

### It doesn’t work! I get some “permissions” error when I try to install stuff!
### It doesn’t work! I get some “permissions” error when I try to install stuff

_Note that you may not want to do this, since Apple has decided it
is not a good default._
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2 changes: 1 addition & 1 deletion docs/Homebrew-and-Python.md
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Expand Up @@ -23,7 +23,7 @@ The executables are organised as follows:
Unversioned symlinks for `python`, `python-config`, `pip` etc. are installed here:

```sh
$(brew --prefix)/opt/python/libexec/bin
$(brew --prefix python)/libexec/bin
```

## Setuptools, pip, etc.
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8 changes: 4 additions & 4 deletions docs/How-to-Build-Software-Outside-Homebrew-with-Homebrew-keg-only-Dependencies.md
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Expand Up @@ -27,21 +27,21 @@ Useful, reliable alternatives exist should you wish to use keg-only tools outsid
You can set flags to give configure scripts or Makefiles a nudge in the right direction. An example of flag setting:

```sh
./configure --prefix=/Users/Dave/Downloads CFLAGS="-I$(brew --prefix)/opt/openssl/include" LDFLAGS="-L$(brew --prefix)/opt/openssl/lib"
./configure --prefix=/Users/Dave/Downloads CFLAGS="-I$(brew --prefix openssl)/include" LDFLAGS="-L$(brew --prefix openssl)/lib"
```

An example using `pip`:

```sh
CFLAGS="-I$(brew --prefix)/opt/icu4c/include" LDFLAGS="-L$(brew --prefix)/opt/icu4c/lib" pip install pyicu
CFLAGS="-I$(brew --prefix icu4c)/include" LDFLAGS="-L$(brew --prefix icu4c)/lib" pip install pyicu
```

### `PATH` modification

You can temporarily prepend your `PATH` with the tool’s `bin` directory, such as:

```sh
export PATH="$(brew --prefix)/opt/openssl/bin:${PATH}"
export PATH="$(brew --prefix openssl)/bin:${PATH}"
```

This will prepend the directory to your `PATH`, ensuring any build script that searches the `PATH` will find it first.
Expand All @@ -55,7 +55,7 @@ If the tool you are attempting to build is [pkg-config](https://en.wikipedia.org
An example of this is:

```sh
export PKG_CONFIG_PATH="$(brew --prefix)/opt/openssl/lib/pkgconfig"
export PKG_CONFIG_PATH="$(brew --prefix openssl)/lib/pkgconfig"
```

If you’re curious about the `PKG_CONFIG_PATH` variable, `man pkg-config` goes into more detail.
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