Merge #11136: Docs: Add python3 to list of dependencies on some platforms

7bb5d3000 Add python3 to list of dependencies on some platforms (danra)

Pull request description:

  python3 is required for running the unit tests on macOS.

  Without python3 on macOS, 'make check' fails because /test/util/bitcoin-util-test.py fails to find python3.

Tree-SHA512: 71dd43bc9099e8431c0b4296301147068282a9f6fed424d7640271b149a51dedeb8fd1386350f08333eb1383ac09b1183c2600347d43367bbb2804abd4fb6e52

doc/build-osx.md

@@ -16,7 +16,7 @@ Then install [Homebrew](https://brew.sh).
 Dependencies
 ----------------------
 
-    brew install automake berkeley-db4 libtool boost --c++11 miniupnpc openssl pkg-config protobuf qt libevent
+    brew install automake berkeley-db4 libtool boost --c++11 miniupnpc openssl pkg-config protobuf python3 qt libevent
 
 If you want to build the disk image with `make deploy` (.dmg / optional), you need RSVG
 

doc/build-unix.md

@@ -65,7 +65,7 @@ Dependency Build Instructions: Ubuntu & Debian
 ----------------------------------------------
 Build requirements:
 
-    sudo apt-get install build-essential libtool autotools-dev automake pkg-config libssl-dev libevent-dev bsdmainutils
+    sudo apt-get install build-essential libtool autotools-dev automake pkg-config libssl-dev libevent-dev bsdmainutils python3
 
 Options when installing required Boost library files:
 
@@ -131,7 +131,7 @@ Dependency Build Instructions: Fedora
 -------------------------------------
 Build requirements:
 
-    sudo dnf install gcc-c++ libtool make autoconf automake openssl-devel libevent-devel boost-devel libdb4-devel libdb4-cxx-devel
+    sudo dnf install gcc-c++ libtool make autoconf automake openssl-devel libevent-devel boost-devel libdb4-devel libdb4-cxx-devel python3
 
 Optional: