initial commit [141.14.140.180,mike]

2026-08-14 09:09:59 +02:00
commit 6a991a25a6
19 changed files with 6691 additions and 0 deletions
@@ -0,0 +1,63 @@
+#!/bin/sh
+# Build upd for the usual platforms into ./bin, auto-incrementing the patch
+# version by 0.0.1 on every build.
+#
+# version.txt holds the currently built version. Each run increments the patch
+# component, then builds every platform with that one version injected via
+# -ldflags, and writes it back. So version.txt always reflects the version of
+# the binaries just built, and all of them carry the same one.
+#
+# The asset names ./bin ends up with are exactly what selfupdate.go looks for
+# in a release: upd-<goos>-<goarch>. Upload the directory as it is.
+#
+# Override the platform list to build just one, or to add a platform:
+#   PLATFORMS="linux/amd64" ./build.sh
+#   PLATFORMS="linux/386 linux/arm64" ./build.sh
+#
+# Windows is not in the list: the run is wrapped in a SIGHUP handler and the
+# install path rules assume a Unix $PATH, so shipping it would promise more
+# than has been tested. PLATFORMS can add it.
+#
+# -s -w drops the symbol table and DWARF info, -trimpath keeps build paths out
+# of the binary; together they roughly halve it. Neither affects a panic trace.
+set -e
+cd "$(dirname "$0")"
+
+PLATFORMS=${PLATFORMS:-"darwin/arm64 darwin/amd64 linux/amd64 linux/arm64"}
+
+V=$(cat version.txt 2>/dev/null || echo 2.0.0)
+
+# split MAJOR.MINOR.PATCH and increment PATCH (no carry: 2.0.9 -> 2.0.10)
+MAJOR=${V%%.*}
+REST=${V#*.}
+MINOR=${REST%%.*}
+PATCH=${REST#*.}
+PATCH=$((PATCH + 1))
+NV="$MAJOR.$MINOR.$PATCH"
+
+mkdir -p bin
+HOST="$(go env GOOS)/$(go env GOARCH)"
+
+for p in $PLATFORMS; do
+	os=${p%/*}
+	arch=${p#*/}
+	out="bin/upd-$os-$arch"
+
+	# CGO_ENABLED=0 throughout: it makes the cross builds work without a
+	# toolchain per target and the binaries static - which is the point on the
+	# old machines upd exists for. It also settles the one thing cgo would
+	# change here: name resolution goes through Go's own resolver, not the
+	# system one, and TLS never touched the C library to begin with.
+	CGO_ENABLED=0 GOOS="$os" GOARCH="$arch" \
+		go build -trimpath -ldflags "-s -w -X main.version=$NV" -o "$out" .
+
+	if [ "$p" = "$HOST" ]; then
+		ln -sf "upd-$os-$arch" bin/upd # the one for this machine
+		echo "  $out  ->  bin/upd"
+	else
+		echo "  $out"
+	fi
+done
+
+echo "$NV" > version.txt
+echo "built upd v$NV"