Add workflow

.github/workflows/release.yml

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+name: Create release
+on: workflow_dispatch
+
+jobs:
+  release_job:
+    runs-on: ubuntu-latest
+    name: Build Release
+    steps:
+      - uses: actions/checkout@v2
+      - name: Build
+        run: |
+          sudo apt-get install -y bison scons
+          ./build.sh
+      - name: Get Release tag
+        run: echo "RELEASE_VERSION=$(date +%F)" >> $GITHUB_ENV
+      - uses: actions/create-release@v1
+        id: create_release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ env.RELEASE_VERSION }}
+          release_name: Release ${{ env.RELEASE_VERSION }}
+          body_path: RELEASE-INFO.md
+          draft: true
+          prerelease: true
+      - uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: plutosdr-apps.tar.gz
+          asset_name: plutosdr-apps-${{ env.RELEASE_VERSION }}.tar.gz
+          asset_content_type: application/gzip

README.md

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+# Prebuilt SoapySDR and rtl_433 apps for Pluto SDR
+
+This is a build action to create [binary releases](https://github.com/triq-org/PlutoSDR-Apps/releases)
+for the [ADALM-Pluto SDR](https://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/adalm-pluto.html#eb-overview).
+
+You mainly get [SoapySDR](https://github.com/pothosware/SoapySDR/),
+the [SoapyPlutoSDR](https://github.com/pothosware/SoapyPlutoSDR/) module,
+and [rtl_433](https://github.com/merbanan/rtl_433).
+But there is also [rx_tools](https://github.com/rxseger/rx_tools),
+[tx_tools](https://github.com/triq-org/tx_tools),
+[SoapyRemote](https://github.com/pothosware/SoapyRemote),
+[chrony](https://chrony.tuxfamily.org/),
+and [gpsd](https://gitlab.com/gpsd/gpsd) currently.
+Let me know what other tools would be useful.
+
+## Using
+
+Download [a Release](https://github.com/triq-org/PlutoSDR-Apps/releases),
+then copy to the Pluto and unpack to `/usr`
+
+## Notes on the compiler toolchain
+
+If you want to compile yourself you need a compiler toolchain.
+
+### Using ARM.com toolchain (previously Linaro)
+
+You can use the ARM.com supplied compiler, located in `DESTDIR/gcc-arm-8.2-2019.01-x86_64-arm-linux-gnueabihf`
+
+See [GNU Toolchain for the A-profile Architecture](https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads/8-2-2019-01).
+You want the download "AArch32 target with hard float (arm-linux-gnueabihf)", then just unpack.
+
+### Using Xilinx 2019.1 SDK toolchain
+
+You can use the Xilinix provided compiler, located in `/opt/Xilinx/SDK/2019.1/gnu/aarch32/lin/gcc-arm-linux-gnueabi`
+The download needs an account though and there is no easy unattended install.
+
+See [Xilinx Software Development Kit (XSDK)](https://www.xilinx.com/support/download/index.html/content/xilinx/en/downloadNav/vitis/archive-sdk.html).
+You want the Software Development Kit Standalone WebInstall Client - 2019.1  Lightweight Installer Download,
+then run `sh Xilinx_SDK_2019.1_0524_1430_Lin64.bin`
+
+We only need tools from /opt/Xilinx/SDK/2019.1/gnu/aarch32/lin/gcc-arm-linux-gnueabi
+You might want to repackage the compiler base dir for unattended install.

Toolchain-arm-linux-gnueabi.cmake

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+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR arm)
+# Set to plutosdr-fw sysroot dir
+if(DEFINED ENV{sysroot})
+    set(CMAKE_SYSROOT $ENV{sysroot})
+else()
+    set(CMAKE_SYSROOT $ENV{HOME}/staging)
+endif()
+# Set to output dir
+if(DEFINED ENV{stagedir})
+    set(CMAKE_STAGING_PREFIX $ENV{stagedir})
+else()
+    set(CMAKE_STAGING_PREFIX $ENV{HOME}/stage)
+endif()
+# Set for SoapySDR to locate it's module search path (/usr/lib/SoapySDR/modules0.7)
+set(CMAKE_INSTALL_PREFIX:PATH /usr)
+# Set to cross compiler location
+if(DEFINED ENV{tools})
+    set(tools $ENV{tools})
+else()
+    set(tools /opt/Xilinx/SDK/2019.1/gnu/aarch32/lin/gcc-arm-linux-gnueabi)
+endif()
+set(CMAKE_C_COMPILER ${tools}/bin/arm-linux-gnueabihf-gcc)
+set(CMAKE_CXX_COMPILER ${tools}/bin/arm-linux-gnueabihf-g++)
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+# Set for Soapy modules and rtl_433 to locate staged SoapySDR libs
+set(CMAKE_PREFIX_PATH ${CMAKE_STAGING_PREFIX})

build.sh

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+#!/bin/bash
+
+set -e
+
+export builddir="${builddir:-$(pwd)}"
+
+date +%F >"${builddir}/RELEASE-VERSION.txt"
+export releaseinfo="${builddir}/RELEASE-INFO.md"
+echo -n >"${releaseinfo}"
+
+if [ ! -d gcc-arm-8.2-2019.01-x86_64-arm-linux-gnueabihf ] ; then
+  [ -f gcc-arm-8.2-2019.01-x86_64-arm-linux-gnueabihf.tar.xz ] || wget https://developer.arm.com/-/media/Files/downloads/gnu-a/8.2-2019.01/gcc-arm-8.2-2019.01-x86_64-arm-linux-gnueabihf.tar.xz
+  tar xf gcc-arm-8.2-2019.01-x86_64-arm-linux-gnueabihf.tar.xz
+fi
+echo '- Compiler: gcc-arm-8.2-2019.01-x86_64-arm-linux-gnueabihf' >>"${releaseinfo}"
+export tools="${tools:-${builddir}/gcc-arm-8.2-2019.01-x86_64-arm-linux-gnueabihf}"
+
+if [ ! -d staging ] ; then
+  [ -f sysroot-v0.34.tar.gz ] || wget https://github.com/analogdevicesinc/plutosdr-fw/releases/download/v0.34/sysroot-v0.34.tar.gz
+  tar xzf sysroot-v0.34.tar.gz
+fi
+echo '- plutosdr-fw: sysroot v0.34' >>"${releaseinfo}"
+export sysroot="${sysroot:-${builddir}/staging}"
+export stagedir="${stagedir:-${builddir}/stage}"
+export toolchain="${toolchain:-${builddir}/Toolchain-arm-linux-gnueabi.cmake}"
+
+[ -d SoapySDR ] || git clone https://github.com/pothosware/SoapySDR.git
+pushd SoapySDR
+echo -n '- SoapySDR: ' >>"${releaseinfo}"
+git describe --tags --first-parent --abbrev=7 --long --dirty --always >>"${releaseinfo}"
+rm -rf build ; mkdir build ; pushd build
+cmake -DCMAKE_TOOLCHAIN_FILE="${toolchain}" -DCMAKE_INSTALL_PREFIX=/usr -DENABLE_PYTHON=OFF -DENABLE_PYTHON3=OFF .. && make && make install
+popd ; popd
+
+[ -d SoapyPlutoSDR ] || git clone https://github.com/pothosware/SoapyPlutoSDR.git
+pushd SoapyPlutoSDR
+echo -n '- SoapyPlutoSDR: ' >>"${releaseinfo}"
+git describe --tags --first-parent --abbrev=7 --long --dirty --always >>"${releaseinfo}"
+rm -rf build ; mkdir build ; pushd build
+cmake -DCMAKE_TOOLCHAIN_FILE="${toolchain}" -DCMAKE_INSTALL_PREFIX=/usr -DSoapySDR_DIR="${stagedir}/share/cmake/SoapySDR" .. && make && make install
+popd ; popd
+
+[ -d SoapyRemote ] || git clone https://github.com/pothosware/SoapyRemote.git
+pushd SoapyRemote
+echo -n '- SoapyRemote: ' >>"${releaseinfo}"
+git describe --tags --first-parent --abbrev=7 --long --dirty --always >>"${releaseinfo}"
+rm -rf build ; mkdir build ; pushd build
+cmake -DCMAKE_TOOLCHAIN_FILE="${toolchain}" -DCMAKE_INSTALL_PREFIX=/usr -DSoapySDR_DIR="${stagedir}/share/cmake/SoapySDR" .. && make && make install
+popd ; popd
+
+[ -d rtl_433 ] || git clone https://github.com/merbanan/rtl_433.git
+pushd rtl_433
+echo -n '- rtl_433: ' >>"${releaseinfo}"
+git describe --tags --first-parent --abbrev=7 --long --dirty --always >>"${releaseinfo}"
+rm -rf build ; mkdir build ; pushd build
+cmake -DENABLE_RTLSDR=OFF -DENABLE_SOAPYSDR=ON -DENABLE_OPENSSL=OFF -DCMAKE_TOOLCHAIN_FILE="${toolchain}" -DCMAKE_INSTALL_PREFIX=/usr -DSoapySDR_DIR="${stagedir}/share/cmake/SoapySDR" .. && make && make install
+popd ; popd
+
+[ -d rx_tools ] || git clone https://github.com/rxseger/rx_tools.git
+pushd rx_tools
+echo -n '- rx_tools: ' >>"${releaseinfo}"
+git describe --tags --first-parent --abbrev=7 --long --dirty --always >>"${releaseinfo}"
+rm -rf build ; mkdir build ; pushd build
+cmake -DCMAKE_TOOLCHAIN_FILE="${toolchain}" -DCMAKE_INSTALL_PREFIX=/usr -DSoapySDR_DIR="${stagedir}/share/cmake/SoapySDR" .. && make && make install
+popd ; popd
+
+[ -d tx_tools ] || git clone https://github.com/triq-org/tx_tools.git
+pushd tx_tools
+echo -n '- tx_tools: ' >>"${releaseinfo}"
+git describe --tags --first-parent --abbrev=7 --long --dirty --always >>"${releaseinfo}"
+rm -rf build ; mkdir build ; pushd build
+cmake -DCMAKE_TOOLCHAIN_FILE="${toolchain}" -DCMAKE_INSTALL_PREFIX=/usr -DSoapySDR_DIR="${stagedir}/share/cmake/SoapySDR" .. && make && make install
+popd ; popd
+
+[ -d chrony ] || git clone https://git.tuxfamily.org/chrony/chrony.git
+pushd chrony
+echo -n '- chrony: ' >>"${releaseinfo}"
+git describe --tags --first-parent --abbrev=7 --long --dirty --always >>"${releaseinfo}"
+export CROSS_COMPILE="${tools}/bin/arm-linux-gnueabihf-"
+CC="${CROSS_COMPILE}gcc" CFLAGS="--sysroot ${sysroot}" ./configure --prefix=/usr
+# sudo apt-get install -y bison
+make
+# make install DESTDIR=${stagedir}
+cp chronyc chronyd "${stagedir}/bin/"
+popd
+
+[ -d gpsd ] || git clone git://git.savannah.gnu.org/gpsd.git
+pushd gpsd
+echo -n '- gpsd: ' >>"${releaseinfo}"
+git describe --tags --first-parent --abbrev=7 --long --dirty --always >>"${releaseinfo}"
+# sudo apt-get install -y scons
+export PATH="$tools/bin:$PATH"
+DESTDIR="${stagedir}" scons libgpsmm=No ncurses=No python=No prefix=/usr sysroot="${sysroot}" target=arm-linux-gnueabihf build install
+# fix paths
+rsync -a "${stagedir}/usr/" "${stagedir}/"
+popd
+
+cd "${stagedir}"
+find . -ls
+tar czf "${builddir}/plutosdr-apps.tar.gz" bin etc lib sbin