Added support for ubuntu 18.04

.github/workflows/build_all.yml

@@ -155,6 +155,28 @@ jobs:
               name: sdrpp_debian_sid_amd64
               path: ${{runner.workspace}}/sdrpp_debian_amd64.deb
 
+    build_ubuntu_bionic:
+        runs-on: ubuntu-latest
+
+        steps:
+        - uses: actions/checkout@v2
+        
+        - name: Create Docker Image
+          run: cd $GITHUB_WORKSPACE/docker_builds/ubuntu_bionic && docker build . --tag sdrpp_build
+
+        - name: Run Container
+          run: docker run --name build -v $GITHUB_WORKSPACE:/root/SDRPlusPlus --env BUILD_NO="-$GITHUB_RUN_NUMBER" sdrpp_build /root/do_build.sh
+
+        - name: Recover Deb Archive
+          working-directory: ${{runner.workspace}}
+          run: docker cp build:/root/SDRPlusPlus/sdrpp_debian_amd64.deb ./
+
+        - name: Save Deb Archive
+          uses: actions/upload-artifact@v2
+          with:
+              name: sdrpp_ubuntu_bionic_amd64
+              path: ${{runner.workspace}}/sdrpp_debian_amd64.deb
+
     build_ubuntu_focal:
         runs-on: ubuntu-latest
 
@@ -237,6 +259,7 @@ jobs:
             mv sdrpp_debian_buster_amd64/sdrpp_debian_amd64.deb sdrpp_all/sdrpp_debian_buster_amd64.deb && 
             mv sdrpp_debian_bullseye_amd64/sdrpp_debian_amd64.deb sdrpp_all/sdrpp_debian_bullseye_amd64.deb && 
             mv sdrpp_debian_sid_amd64/sdrpp_debian_amd64.deb sdrpp_all/sdrpp_debian_sid_amd64.deb && 
+            mv sdrpp_ubuntu_bionic_amd64/sdrpp_debian_amd64.deb sdrpp_all/sdrpp_ubuntu_bionic_amd64.deb && 
             mv sdrpp_ubuntu_focal_amd64/sdrpp_debian_amd64.deb sdrpp_all/sdrpp_ubuntu_focal_amd64.deb && 
             mv sdrpp_ubuntu_groovy_amd64/sdrpp_debian_amd64.deb sdrpp_all/sdrpp_ubuntu_groovy_amd64.deb && 
             mv sdrpp_ubuntu_hirsute_amd64/sdrpp_debian_amd64.deb sdrpp_all/sdrpp_ubuntu_hirsute_amd64.deb

docker_builds/ubuntu_bionic/Dockerfile

@@ -0,0 +1,4 @@
+FROM ubuntu:bionic
+ENV DEBIAN_FRONTEND=noninteractive 
+COPY do_build.sh /root
+RUN chmod +x /root/do_build.sh

docker_builds/ubuntu_bionic/do_build.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+set -e
+cd /root
+
+# Update repos to get a more recent cmake version
+apt update
+apt install -y gpg wget
+wget -O - https://apt.kitware.com/keys/kitware-archive-latest.asc 2>/dev/null | gpg --dearmor - | tee /usr/share/keyrings/kitware-archive-keyring.gpg >/dev/null
+echo 'deb [signed-by=/usr/share/keyrings/kitware-archive-keyring.gpg] https://apt.kitware.com/ubuntu/ bionic main' | tee /etc/apt/sources.list.d/kitware.list >/dev/null
+apt update
+
+# Install dependencies and tools
+apt install -y build-essential cmake git libfftw3-dev libglfw3-dev libglew-dev libvolk1-dev libsoapysdr-dev libairspyhf-dev libairspy-dev \
+            libiio-dev libad9361-dev librtaudio-dev libhackrf-dev librtlsdr-dev libbladerf-dev liblimesuite-dev p7zip-full wget portaudio19-dev
+
+# Install SDRPlay libraries
+wget https://www.sdrplay.com/software/SDRplay_RSP_API-Linux-3.07.1.run
+7z x ./SDRplay_RSP_API-Linux-3.07.1.run
+7z x ./SDRplay_RSP_API-Linux-3.07.1
+cp x86_64/libsdrplay_api.so.3.07 /usr/lib/libsdrplay_api.so
+cp inc/* /usr/include/
+
+cd SDRPlusPlus
+mkdir build
+cd build
+cmake .. -DOPT_BUILD_SDRPLAY_SOURCE=ON -DOPT_BUILD_BLADERF_SOURCE=OFF -DOPT_BUILD_LIMESDR_SOURCE=ON -DOPT_BUILD_NEW_PORTAUDIO_SINK=ON -DOPT_OVERRIDE_STD_FILESYSTEM=ON
+make -j2
+
+cd ..
+sh make_debian_package.sh ./build libfftw3-dev libglfw3-dev libglew-dev libvolk1-dev