Added script for build environment preparation [#METRIQA-1369].

docs/en/development/build.rst

@@ -18,7 +18,7 @@ Install Git and CMake
 
 .. code-block:: bash
 
-    sudo apt-get install git cmake
+    sudo apt-get install git cmake3
 
 
 Detect number of threads

docs/ru/development/build.rst

@@ -18,7 +18,7 @@ Install Git and CMake
 
 .. code-block:: bash
 
-    sudo apt-get install git cmake
+    sudo apt-get install git cmake3
 
 
 Detect number of threads

utils/prepare-environment/install-clang.sh

@@ -8,7 +8,7 @@ BRANCH=trunk
 THREADS=$(grep -c ^processor /proc/cpuinfo)
 
 cd ~
-sudo apt-get install subversion
+sudo apt-get install -y subversion cmake3
 mkdir llvm
 cd llvm
 svn co "http://llvm.org/svn/llvm-project/llvm/${BRANCH}" llvm

utils/prepare-environment/install-gcc.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+
+set -e
+
+sudo apt-get install -y curl
+
+VERSION=$(curl -sSL https://ftpmirror.gnu.org/gcc/ | grep -oE 'gcc-[0-9]+(\.[0-9]+)+' | sort -Vr | head -n1) #'
+#VERSION=gcc-7.1.0
+
+VERSION_SHORT=$(echo "$VERSION" | grep -oE '[0-9]')
+
+echo "Will download ${VERSION} (short version: $VERSION_SHORT)."
+
+THREADS=$(grep -c ^processor /proc/cpuinfo)
+
+cd ~
+
+wget https://ftpmirror.gnu.org/gcc/${VERSION}/${VERSION}.tar.bz2
+tar xf ${VERSION}.tar.bz2
+cd ${VERSION}
+./contrib/download_prerequisites
+cd ..
+mkdir gcc-build
+cd gcc-build
+../${VERSION}/configure --enable-languages=c,c++
+make -j $THREADS
+sudo make install
+
+sudo ln -s /usr/local/bin/gcc /usr/local/bin/gcc-${VERSION_SHORT}
+sudo ln -s /usr/local/bin/g++ /usr/local/bin/g++-${VERSION_SHORT}
+sudo ln -s /usr/local/bin/gcc /usr/local/bin/cc
+sudo ln -s /usr/local/bin/g++ /usr/local/bin/c++
+
+hash gcc g++
+gcc --version