HADOOP-17507. Add install notes GCC9, CMake 3.19

BUILDING.txt

@@ -63,6 +63,18 @@ Installing required packages for clean install of Ubuntu 14.04 LTS Desktop:
   $ sudo apt-get -y install maven
 * Native libraries
   $ sudo apt-get -y install build-essential autoconf automake libtool cmake zlib1g-dev pkg-config libssl-dev libsasl2-dev
+* GCC 9.3.0
+  $ sudo apt-get -y install software-properties-common
+  $ sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+  $ sudo apt-get update
+  $ sudo apt-get -y install g++-9 gcc-9
+  $ sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 60 --slave /usr/bin/g++ g++ /usr/bin/g++-9
+* CMake 3.19
+  $ curl -L https://cmake.org/files/v3.19/cmake-3.19.0.tar.gz > cmake-3.19.0.tar.gz
+  $ tar -zxvf cmake-3.19.0.tar.gz && cd cmake-3.19.0
+  $ ./bootstrap
+  $ make -j$(nproc)
+  $ sudo make install
 * Protocol Buffers 3.7.1 (required to build native code)
   $ mkdir -p /opt/protobuf-3.7-src \
         && curl -L -s -S \
@@ -453,6 +465,17 @@ Building on CentOS 8
 * Install libraries provided by CentOS 8.
   $ sudo dnf install libtirpc-devel zlib-devel lz4-devel bzip2-devel openssl-devel cyrus-sasl-devel libpmem-devel
 
+* Install GCC 9.3.0
+  $ sudo dnf -y install gcc-toolset-9-gcc gcc-toolset-9-gcc-c++
+  $ source /opt/rh/gcc-toolset-9/enable
+
+* Install CMake 3.19
+  $ curl -L https://cmake.org/files/v3.19/cmake-3.19.0.tar.gz > cmake-3.19.0.tar.gz
+  $ tar -zxvf cmake-3.19.0.tar.gz && cd cmake-3.19.0
+  $ ./bootstrap
+  $ make -j$(nproc)
+  $ sudo make install
+
 * Install boost.
   $ curl -L -o boost_1_72_0.tar.bz2 https://sourceforge.net/projects/boost/files/boost/1.72.0/boost_1_72_0.tar.bz2/download
   $ tar xjf boost_1_72_0.tar.bz2