From 8c6cba0aa3f62ce810ae479970f1309bc7b9dfdc Mon Sep 17 00:00:00 2001
From: Xerbo <xerbo@protonmail.com>
Date: Tue, 24 Jan 2023 18:02:44 +0000
Subject: [PATCH] ARM builds

---
 .github/workflows/build.yml | 27 ++++++++++++++++++++++++++-
 .gitignore                  |  1 +
 CMakeLists.txt              |  5 +++--
 build_arm.sh                | 18 ++++++++++++++++++
 cmake/toolchain-armhf.cmake | 19 +++++++++++++++++++
 5 files changed, 67 insertions(+), 3 deletions(-)
 create mode 100755 build_arm.sh
 create mode 100644 cmake/toolchain-armhf.cmake

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b568ae3..590b755 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -72,10 +72,35 @@ jobs:
         fetch-depth: 0
 
     - name: Run build script
-      run: vcvarsx86_amd64 & ./build_windows.bat
+      shell: cmd
+      run: "C:/Program Files/Microsoft Visual Studio/2022/Enterprise/VC/Auxiliary/Build/vcvars64.bat" & build_windows.bat
 
     - name: Upload ZIP package
       uses: actions/upload-artifact@v3
       with:
           name: ZIP package (MSVC)
           path: winbuild/aptdec_*.zip
+  
+  build_linux_armhf:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: 'recursive'
+        fetch-depth: 0
+
+    - name: Run build script
+      run: docker run -v $(pwd):/aptdec:z -w /aptdec debian:11 ./build_arm.sh
+
+    - name: Upload DEB package
+      uses: actions/upload-artifact@v3
+      with:
+          name: DEB package (ARM)
+          path: build/aptdec_*.deb
+
+    - name: Upload TGZ package
+      uses: actions/upload-artifact@v3
+      with:
+          name: TGZ package (ARM)
+          path: build/aptdec_*.tar.gz
diff --git a/.gitignore b/.gitignore
index d4e410a..0febd33 100644
--- a/.gitignore
+++ b/.gitignore
@@ -89,3 +89,4 @@ zlib/
 libpng/
 libsndfile-*-win64.zip
 libsndfile-*-win64/
+root/
diff --git a/CMakeLists.txt b/CMakeLists.txt
index e5f3a09..4c99a00 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -79,13 +79,14 @@ endif()
 install(TARGETS aptdec PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/aptdec LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})
 
 # Packaging
-set(CPACK_PACKAGE_VERSION "${VERSION}")
+string(REPLACE v "" CPACK_PACKAGE_VERSION ${VERSION})
+set(CPACK_DEBIAN_PACKAGE_ARCHITECTURE ${CMAKE_SYSTEM_PROCESSOR})
 set(CPACK_PACKAGE_NAME "aptdec")
 set(CPACK_PACKAGE_CONTACT "Xerbo (xerbo@protonmail.com)")
 set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "NOAA APT satellite imagery decoder")
 set(CPACK_PACKAGE_DESCRIPTION "Aptdec is a FOSS library/program that decodes images transmitted by the NOAA POES weather satellites. These satellites transmit constantly (among other things) medium resolution (4km/px) images of the earth over a analog mode called APT.")
 set(CPACK_PACKAGE_FILE_NAME "${CPACK_PACKAGE_NAME}_${CPACK_PACKAGE_VERSION}.${CMAKE_SYSTEM_PROCESSOR}")
-set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON)
+set(CPACK_DEBIAN_PACKAGE_DEPENDS "libsndfile1, libpng16-16")
 
 if(WIN32)
     file(GLOB DLLS ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_BINDIR}/*.dll)
diff --git a/build_arm.sh b/build_arm.sh
new file mode 100755
index 0000000..7c44c9c
--- /dev/null
+++ b/build_arm.sh
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+# This script only works on Debian Bullseye
+# If you have docker this is trivially easy:
+#   docker run -v $(pwd):/aptdec:z -w /aptdec debian:11 ./build_arm.sh
+
+apt-get update
+apt-get install -y debootstrap cmake gcc-arm-linux-gnueabihf
+
+# Prepare armhf root environment
+if [ ! -d root ]; then
+    debootstrap --keyring=/usr/share/keyrings/debian-archive-keyring.gpg --arch=armhf --include=libsndfile1-dev,libpng-dev --download-only bullseye root http://deb.debian.org/debian/
+    for i in root/var/cache/apt/archives/*.deb; do dpkg -x "$i" root; done
+fi
+
+# Build aptdec
+cmake -B build -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-armhf.cmake -DCMAKE_INSTALL_PREFIX=/aptdec/root
+cmake --build build -j$(nproc)
+cmake --build build --target package
diff --git a/cmake/toolchain-armhf.cmake b/cmake/toolchain-armhf.cmake
new file mode 100644
index 0000000..6e5a70a
--- /dev/null
+++ b/cmake/toolchain-armhf.cmake
@@ -0,0 +1,19 @@
+# the name of the target operating system
+SET(CMAKE_SYSTEM_NAME Linux)
+SET(CMAKE_SYSTEM_PROCESSOR armhf)
+
+# which compilers to use for C and C++
+SET(CMAKE_C_COMPILER arm-linux-gnueabihf-gcc)
+SET(CMAKE_CXX_COMPILER arm-linux-gnueabihf-g++)
+
+# here is the target environment located
+SET(CMAKE_FIND_ROOT_PATH /usr/arm-linux-gnueabihf/ ${CMAKE_INSTALL_PREFIX})
+# Hack
+link_directories(${CMAKE_INSTALL_PREFIX}/lib/arm-linux-gnueabihf)
+
+# adjust the default behaviour of the FIND_XXX() commands:
+# search headers and libraries in the target environment, search
+# programs in the host environment
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)