Add CI

.github/workflows/c-cpp.yml

@@ -0,0 +1,33 @@
+#
+# Alertik: a tiny 'syslog' server & notification tool for Mikrotik routers.
+# This is free and unencumbered software released into the public domain.
+#
+
+name: CI
+
+env:
+  CTEST_OUTPUT_ON_FAILURE: 1
+  TRAVIS: 1
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  linux:
+    name: Build for ARMv6 and ARMv7
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Download & extract GCC v11.2/musl (b76f37f) for armv6
+      run:  toolchain/toolchain.sh "download_musl_armv6"
+    - name: Download & build BearSSL for armv6
+      run:  toolchain/toolchain.sh "download_build_bearssl"
+    - name: Download & build libcurl for armv6
+      run:  toolchain/toolchain.sh "download_build_libcurl"
+    - name: Build Alertik for armv6
+      run:  toolchain/toolchain.sh "do_build_armv6"

Makefile

@@ -16,7 +16,9 @@ endif
 ifneq ($(CROSS),)
 	CC       = $(CROSS)-linux-musleabi-gcc
 	STRIP    = $(CROSS)-linux-musleabi-strip
+	ifeq ($(LOG_FILE),)
 		CFLAGS  += -DUSE_FILE_AS_LOG # We don't have stdout...
+	endif
 	LDLIBS  += -lbearssl
 	LDFLAGS += -no-pie --static
 endif

toolchain/armv6.mk

@@ -0,0 +1,16 @@
+# conf file for armv6 builds on BearSSL
+include conf/Unix.mk
+
+# We override the build directory.
+BUILD = armv6
+
+# C compiler, linker, and static library builder.
+CC = armv6-linux-musleabi-gcc
+CFLAGS = -W -Wall -Os
+LD = armv6-linux-musleabi-gcc
+AR = armv6-linux-musleabi-ar
+
+# We compile only the static library.
+DLL = no
+TOOLS = no
+TESTS = no

toolchain/toolchain.sh

@@ -0,0 +1,100 @@
+#!/bin/bash
+
+#
+# Alertik: a tiny 'syslog' server & notification tool for Mikrotik routers.
+# This is free and unencumbered software released into the public domain.
+#
+
+# Backup current folder
+pushd .
+export CURDIR="$( cd "$(dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+cd "$CURDIR/"
+export PATH="$PATH:$CURDIR/armv6-linux-musleabi-cross/bin"
+export MUSL_PREFIX="$CURDIR/armv6-linux-musleabi-cross/armv6-linux-musleabi"
+
+# Misc
+MUSL_ARMv6_LINK="https://musl.cc/armv6-linux-musleabi-cross.tgz"
+CURL_LINK="https://github.com/curl/curl/releases/download/curl-8_8_0/curl-8.8.0.tar.xz"
+BEARSSL_REPO="https://www.bearssl.org/git/BearSSL"
+BEARSSL_HASH="79c060eea3eea1257797f15ea1608a9a9923aa6f"
+
+download_musl_armv6() {
+	echo "[+] Downloading musl ..."
+	wget "$MUSL_ARMv6_LINK" -O armv6-musl.tgz
+	tar xvf armv6-musl.tgz
+	popd
+}
+
+download_build_bearssl() {
+	echo "[+] Cloning BearSSL ..."
+	git clone "$BEARSSL_REPO"
+	cd BearSSL/
+	git checkout "$BEARSSL_HASH"
+	cp ../armv6.mk conf/
+	echo "[+] Building ..."
+	make CONF=armv6
+	# Copy to the right path
+	echo "[+] Installing ..."
+	cp armv6/libbearssl.a "$MUSL_PREFIX/lib"
+	cp inc/* "$MUSL_PREFIX/include"
+	popd
+}
+
+download_build_libcurl() {
+	echo "[+] Downloading cURL ..."
+	wget "$CURL_LINK" -O curl.tar.xz
+	tar xvf curl.tar.xz
+
+	echo "[+] Building cURL ..."
+	cd curl*/
+	mkdir build && cd build/
+	../configure \
+		--prefix="$MUSL_PREFIX" \
+		--target=armv6-linux-musleabi \
+		--host=armv6-linux-musleabi \
+		--build=x86_64-linux-gnu \
+		--with-bearssl \
+		--disable-ipv6 \
+		--disable-ftp \
+		--disable-gopher \
+		--disable-imap \
+		--disable-ipfs \
+		--disable-ipns \
+		--disable-mqtt \
+		--disable-pop3 \
+		--disable-rtsp \
+		--disable-smtp \
+		--disable-telnet \
+		--disable-tftp \
+		--disable-hsts
+
+	make -j$(nproc)
+	make install
+	popd
+}
+
+# This is slightly better than using the CI file
+# because our env vars are already set!
+build_alertik_armv6() {
+	popd
+	echo "[+] Building Alertik!"
+	make CROSS=armv6
+	echo "[+] File type:"
+	file alertik
+	echo "[+] File size:"
+	ls -lah alertik
+}
+
+# Dispatcher
+if [ "$1" == "download_musl_armv6" ]; then
+	download_musl_armv6
+elif [ "$1" == "download_build_bearssl" ]; then
+	download_build_bearssl
+elif [ "$1" == "download_build_libcurl" ]; then
+	download_build_libcurl
+elif [ "$1" == "build_alertik_armv6" ]; then
+	build_alertik_armv6
+else
+	echo "No option found!"
+fi