build: make os agnostic

* rewrite build script in python
* switch action to use ubuntu

build_release.py

@@ -0,0 +1,84 @@
+#!/usr/bin/env python3
+import os.path
+import shutil
+import subprocess
+import tarfile
+
+# Configuration
+# output path (relative to this script)
+outRelativeDir = "_out"
+
+###
+
+# Script
+# relative dir is root
+scriptDir = dirname = os.path.dirname(__file__)
+outBaseDir = os.path.join(scriptDir, outRelativeDir)
+releaseDir = os.path.join(outBaseDir, "_release")
+
+# recreate paths
+if os.path.exists(outBaseDir):
+  shutil.rmtree(outBaseDir)
+os.makedirs(outBaseDir)
+os.makedirs(releaseDir)
+
+# get version number / tag
+gitTag = subprocess.check_output("git describe --tags --abbrev=0").decode('utf-8').strip()
+
+# # GOOS_GOARCH to build for
+targets = [
+   "windows_amd64",
+   "linux_amd64",
+   "linux_arm64",
+   "darwin_amd64",
+   "darwin_arm64",
+]
+
+# loop through and build all targets
+for target in targets:
+  # environment vars
+  split = target.split("_")
+  GOOS = split[0]
+  GOARCH = split[1]
+  os.environ["GOOS"] = GOOS
+  os.environ["GOARCH"] = GOARCH
+  os.environ["CGO_ENABLED"] = "0"
+
+  # send build product to GOOS_GOARCH subfolders
+  targetOutDir = os.path.join(outBaseDir, target)
+  if not os.path.exists(targetOutDir):
+    os.makedirs(targetOutDir)
+
+  # special case for windows to add file extensions
+  extension = ""
+  if GOOS.lower() == "windows":
+    extension = ".exe"
+
+  # build binary and install only binary
+  subprocess.run(f"go build -o {targetOutDir}/apc-p15-tool{extension} ./cmd/tool")
+  subprocess.run(f"go build -o {targetOutDir}/apc-p15-install{extension} ./cmd/install_only")
+
+  # copy other important files for release
+  shutil.copy("README.md", targetOutDir)
+  shutil.copy("CHANGELOG.md", targetOutDir)
+  shutil.copy("LICENSE.md", targetOutDir)
+
+  # compress release file
+  # special case for windows & mac to use zip format
+  if GOOS.lower() == "windows" or GOOS.lower() == "darwin":
+    shutil.make_archive(f"{releaseDir}/apc-p15-tool-{gitTag}_{target}", "zip", targetOutDir)
+  else:
+    # for others, use gztar and set permissions on the files
+
+    # filter for setting permissions
+    def set_permissions(tarinfo):
+      if tarinfo.name == "apc-p15-tool" or tarinfo.name == "apc-p15-install":
+        tarinfo.mode = 0o0755
+      else:
+        tarinfo.mode = 0o0644
+      return tarinfo
+
+    # make tar
+    with tarfile.open(f"{releaseDir}/apc-p15-tool-{gitTag}_{target}.tar.gz", "w:gz") as tar:
+        for file in os.listdir(targetOutDir):
+          tar.add(os.path.join(targetOutDir, file), arcname=file, recursive=False, filter=set_permissions)