Add gcc-7 on 20.04

And use gcc-7 by specifying CC and CXX.

Relates-To: OLPEDGE-2776

Signed-off-by: Yaroslav Stefinko <ext-yaroslav.stefinko@here.com>

Author: ystefinko

.github/workflows/psv_pipelines.yml

@@ -17,14 +17,18 @@ jobs:
   psv-linux-gcc-build-test-codecov:
     name: PSV / Linux gcc 7.5 / Tests / Code coverage
     runs-on: ubuntu-20.04
+    env:
+      BUILD_TYPE: RelWithDebInfo
+      CC: gcc-7
+      CXX: g++-7
     steps:
     - name: Check out repository
       uses: actions/checkout@v2
     - name: "C++ Lint checker script"
       run: ./scripts/misc/cpplint_ci.sh
       shell: bash
     - name: Install Ubuntu dependencies
-      run: sudo apt-get update && sudo apt-get install -y libboost-all-dev ccache libssl-dev libcurl4-openssl-dev --no-install-recommends
+      run: sudo apt-get update && sudo apt-get install -y libboost-all-dev ccache libssl-dev libcurl4-openssl-dev gcc-7 g++-7 --no-install-recommends
       shell: bash
     - name: Compile project with cmake and ccache
       run: gcc --version && ./scripts/linux/psv/build_psv.sh
@@ -43,11 +47,13 @@ jobs:
     runs-on: ubuntu-20.04
     env:
       BUILD_TYPE: RelWithDebInfo
+      CC: gcc-7
+      CXX: g++-7
     steps:
     - name: Check out repository
       uses: actions/checkout@v2
     - name: Install Ubuntu dependencies
-      run: sudo apt-get update && sudo apt-get install -y libboost-all-dev libssl-dev libcurl4-openssl-dev --no-install-recommends
+      run: sudo apt-get update && sudo apt-get install -y libboost-all-dev libssl-dev libcurl4-openssl-dev gcc-7 g++-7 --no-install-recommends
       shell: bash
     - name: Compile project without cache
       run: ./scripts/linux/psv/build_psv_no_cache.sh

scripts/linux/psv/build_psv_no_cache.sh

@@ -1,6 +1,6 @@
 #!/bin/bash -ex
 #
-# Copyright (C) 2021 HERE Europe B.V.
+# Copyright (C) 2021-2022 HERE Europe B.V.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -20,7 +20,7 @@
 mkdir -p build
 cd build
 
-cmake \
+cmake -DCMAKE_BUILD_TYPE=$BUILD_TYPE \
     -DOLP_SDK_ENABLE_TESTING=OFF \
     -DOLP_SDK_ENABLE_DEFAULT_CACHE=OFF \
     -DOLP_SDK_ENABLE_DEFAULT_CACHE_LMDB=OFF \