Building vector.dev for Raspberry Pi 1 (and Rpi Zero) - Adding arm-unknown-linux-musleabihf target

1_README.txt

Vector.dev does not come with armv6 target, so it cannot be installed to old RPi 1 or RPi Zero. 
However, it can be compiled from source for that CPUJ architecture. I used `arm-unknown-linux-musleabihf`.

I use 0.31.0 version and followed this guide: https://vector.dev/docs/setup/installation/manual/from-source/#docker
Apply the following patch to the codebase, then you'll be able to do `make package-arm-unknown-linux-musleabihf
` to make a tar.gz or `make package-deb-arm-musl` to make a deb package.
Building vector consumes about 10Gb, and 10Gb more to build a deb.

I had to drop kafka support, as librdkafka was very stubborn and wanted to be compiled for armv7 target even when all the components were build for armv6.
I had linking issues concerning vfp3 functions, so I dropped the whole feature as I did not need it. 
I am sure it can be fixed, but the easiest way was to just disable kafka support.

arm-musleabihf.patch

diff --git a/.cargo/config.toml b/.cargo/config.toml
index 2777301..12153cb 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -22,6 +22,10 @@ rustflags = "-Lnative=/lib/native-libs"
 [target.armv7-unknown-linux-musleabihf]
 rustflags = "-Lnative=/lib/native-libs"
 
+[target.arm-unknown-linux-musleabihf]
+rustflags = "-Lnative=/lib/native-libs"
+
+
 [target.x86_64-unknown-linux-gnu]
 rustflags = ["-C", "link-args=-rdynamic"]
 
diff --git a/Cargo.toml b/Cargo.toml
index dd4227f..1a4eff4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -82,6 +82,10 @@ depends = "libc6 (>= 2.18)"
 [package.metadata.deb.variants.aarch64-unknown-linux-musl]
 depends = ""
 
+[package.metadata.deb.variants.arm-unknown-linux-musleabihf]
+depends = ""
+
+
 [workspace]
 members = [
   ".",
@@ -401,6 +405,7 @@ target-aarch64-unknown-linux-gnu = ["api", "api-client", "enrichment-tables", "r
 target-aarch64-unknown-linux-musl = ["api", "api-client", "enrichment-tables", "rdkafka?/cmake_build", "sinks", "sources", "sources-dnstap", "transforms", "unix", "enterprise"]
 target-armv7-unknown-linux-gnueabihf = ["api", "api-client", "enrichment-tables", "rdkafka?/cmake_build", "sinks", "sources", "sources-dnstap", "transforms", "unix", "enterprise"]
 target-armv7-unknown-linux-musleabihf = ["api", "api-client", "rdkafka?/cmake_build", "enrichment-tables", "sinks", "sources", "sources-dnstap", "transforms", "enterprise"]
+target-arm-unknown-linux-musleabihf = ["api", "api-client", "enrichment-tables", "sinks", "sources", "sources-dnstap", "transforms", "enterprise"]
 target-x86_64-unknown-linux-gnu = ["api", "api-client", "rdkafka?/cmake_build", "enrichment-tables", "sinks", "sources", "sources-dnstap", "transforms", "unix", "rdkafka?/gssapi-vendored", "enterprise"]
 target-x86_64-unknown-linux-musl = ["api", "api-client", "rdkafka?/cmake_build", "enrichment-tables", "sinks", "sources", "sources-dnstap", "transforms", "unix", "enterprise"]
 # Does not currently build
@@ -477,7 +482,7 @@ sources-logs = [
   "sources-http_client",
   "sources-internal_logs",
   "sources-journald",
-  "sources-kafka",
+#  "sources-kafka",
   "sources-kubernetes_logs",
   "sources-logstash",
   "sources-nats",
@@ -624,7 +629,7 @@ sinks-logs = [
   "sinks-http",
   "sinks-humio",
   "sinks-influxdb",
-  "sinks-kafka",
+#  "sinks-kafka",
   "sinks-mezmo",
   "sinks-loki",
   "sinks-nats",
@@ -648,7 +653,7 @@ sinks-metrics = [
   "sinks-datadog_metrics",
   "sinks-humio",
   "sinks-influxdb",
-  "sinks-kafka",
+#  "sinks-kafka",
   "sinks-prometheus",
   "sinks-sematext",
   "sinks-statsd",
diff --git a/Cross.toml b/Cross.toml
index 1b138c3..f11aba0 100644
--- a/Cross.toml
+++ b/Cross.toml
@@ -28,3 +28,6 @@ image = "vector-cross-env:armv7-unknown-linux-gnueabihf"
 
 [target.armv7-unknown-linux-musleabihf]
 image = "vector-cross-env:armv7-unknown-linux-musleabihf"
+
+[target.arm-unknown-linux-musleabihf]
+image = "vector-cross-env:arm-unknown-linux-musleabihf"
diff --git a/Makefile b/Makefile
index d988725..97dcdb1 100644
--- a/Makefile
+++ b/Makefile
@@ -527,11 +527,15 @@ package-armv7-unknown-linux-gnueabihf: target/artifacts/vector-${VERSION}-armv7-
 package-armv7-unknown-linux-musleabihf: target/artifacts/vector-${VERSION}-armv7-unknown-linux-musleabihf.tar.gz ## Build an archive suitable for the `armv7-unknown-linux-musleabihf triple.
 	@echo "Output to ${<}."
 
+.PHONY: package-arm-unknown-linux-musleabihf
+package-arm-unknown-linux-musleabihf: target/artifacts/vector-${VERSION}-arm-unknown-linux-musleabihf.tar.gz
+	@echo "Output to ${<}."
+
 # debs
 
 .PHONY: package-deb-x86_64-unknown-linux-gnu
 package-deb-x86_64-unknown-linux-gnu: package-x86_64-unknown-linux-gnu ## Build the x86_64 GNU deb package
-	$(CONTAINER_TOOL) run -v  $(PWD):/git/vectordotdev/vector/ -e TARGET=x86_64-unknown-linux-gnu -e VECTOR_VERSION $(ENVIRONMENT_UPSTREAM) cargo vdev package deb
+	$(CONTAINER_TOOL) run -v  $(PWD):/git/vectordotdev/vector/ -e TARGET=x86_64-unknown-linux-gnu -e VECTOR_VERSION $(ENVIRONMENT_UPSTREAM)  cargo vdev package deb
 
 .PHONY: package-deb-x86_64-unknown-linux-musl
 package-deb-x86_64-unknown-linux-musl: package-x86_64-unknown-linux-musl ## Build the x86_64 GNU deb package
@@ -545,6 +549,10 @@ package-deb-aarch64: package-aarch64-unknown-linux-gnu ## Build the aarch64 deb
 package-deb-armv7-gnu: package-armv7-unknown-linux-gnueabihf ## Build the armv7-unknown-linux-gnueabihf deb package
 	$(CONTAINER_TOOL) run -v  $(PWD):/git/vectordotdev/vector/ -e TARGET=armv7-unknown-linux-gnueabihf -e VECTOR_VERSION $(ENVIRONMENT_UPSTREAM) cargo vdev package deb
 
+.PHONY: package-deb-arm-musl
+package-deb-arm-musl: package-arm-unknown-linux-musleabihf
+	$(CONTAINER_TOOL) run -v  $(PWD):/git/vectordotdev/vector/ -e TARGET=arm-unknown-linux-musleabihf -e VECTOR_VERSION $(ENVIRONMENT_UPSTREAM) git config --global --add safe.directory /git/vectordotdev/vector && cargo vdev package deb
+
 # rpms
 
 .PHONY: package-rpm-x86_64-unknown-linux-gnu