Move to ACAP 4 Native SDK and libmodbus version 3.1.11

This patchset moves to the ACAP 4 Native SDK. This means we drop
support for (really) old devices. If you need to build with the ACAP 3
SDK for old devices, please use the previous commit as your base since
that will work fine for that.

With the move to ACAP 4 Native SDK, we can drop the support for this
repo to be built with locally installed SDKs (that nobody uses these
days anyway) and then move the build of libmodbus from Makefile into the
Dockerfile instead.

This patchset also bumps libmodbus from version 3.1.7 to 3.1.11.

Change-Id: I9cfef8b6608c4c8ab897034799b54f8e2aae6fab
Signed-off-by: Joakim Roubert <joakimr@axis.com>

Dockerfile

@@ -1,20 +1,45 @@
-ARG ARCH=armv7hf
-ARG ACAP_SDK_VERSION=3.5
-ARG SDK_IMAGE=axisecp/acap-sdk
-ARG BUILD_DIR=/usr/local/src/server-acap
+ARG ARCH=aarch64
+ARG ACAP_SDK_VERSION=1.15
+ARG SDK_IMAGE=axisecp/acap-native-sdk
+ARG LIBMODBUS_VERSION=3.1.11
+ARG BUILD_DIR=/usr/local/src
+ARG ACAP_BUILD_DIR="$BUILD_DIR"/app
+ARG LIBMODBUS_BUILD_DIR="$BUILD_DIR"/libmodbus
 
-FROM $SDK_IMAGE:$ACAP_SDK_VERSION-$ARCH-ubuntu20.04 AS builder
-ARG BUILD_DIR
-WORKDIR "$BUILD_DIR"
+FROM $SDK_IMAGE:$ACAP_SDK_VERSION-$ARCH AS builder
+ARG ACAP_BUILD_DIR
+ARG LIBMODBUS_BUILD_DIR
+ARG LIBMODBUS_VERSION
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Install additional build dependencies
+RUN apt-get update && apt-get install -y -f --no-install-recommends \
+    autoconf \
+    automake \
+    libtool
+
+# Build libmodbus
+WORKDIR "$LIBMODBUS_BUILD_DIR"
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+RUN curl -L https://github.com/stephane/libmodbus/archive/refs/tags/v$LIBMODBUS_VERSION.tar.gz | tar --strip-components=1 -xz
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+RUN . /opt/axis/acapsdk/environment-setup* && \
+    ./autogen.sh && \
+    ./configure --host=$ARCH --prefix=/usr --enable-static=yes --enable-shared=no && \
+    make -j $(nproc) install prefix=$SDKTARGETSYSROOT/usr
+
+# Build ACAP package
+WORKDIR "$ACAP_BUILD_DIR"
 COPY LICENSE \
      Makefile \
      manifest.json \
      *.c \
      *.h \
      ./
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 RUN . /opt/axis/acapsdk/environment-setup* && \
     acap-build .
 
 FROM scratch
-ARG BUILD_DIR
-COPY --from=builder "$BUILD_DIR"/*eap "$BUILD_DIR"/*LICENSE.txt /
+ARG ACAP_BUILD_DIR
+COPY --from=builder "$ACAP_BUILD_DIR"/*eap "$ACAP_BUILD_DIR"/*LICENSE.txt /

Makefile

@@ -4,52 +4,30 @@ PROG = modbusacap
 SRCS = $(wildcard *.c)
 OBJS = $(SRCS:.c=.o)
 STRIP ?= strip
+RM ?= rm -f
 
-PKGS = gio-2.0 glib-2.0 axevent axparameter
+PKGS = gio-2.0 glib-2.0 axevent axparameter libmodbus
 CFLAGS += $(shell PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) pkg-config --cflags $(PKGS))
 LDLIBS += $(shell PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) pkg-config --libs $(PKGS))
 
-# libmodbus
-LIBMODBUS_VERSION = 3.1.7
-LIBMODBUS_DIR = $(CURDIR)/libmodbus-$(LIBMODBUS_VERSION)
-LIBMODBUS = $(LIBMODBUS_DIR)/lib/libmodbus.a
-CFLAGS += -I $(LIBMODBUS_DIR)/include/modbus
-LDLIBS += $(LIBMODBUS)
-
 CFLAGS += -Wformat=2 -Wpointer-arith -Wbad-function-cast -Wstrict-prototypes -Wdisabled-optimization -Wall -Werror
 
 # main targets
 all: $(PROG)
 	$(STRIP) $(PROG)
 
-$(OBJS): $(LIBMODBUS)
-
 $(PROG): $(OBJS)
 	$(CC) $(CFLAGS) $(LDFLAGS) $^ $(LIBS) $(LDLIBS) -o $@
 
-# libmodbus targets
-$(LIBMODBUS_DIR):
-	curl -L https://libmodbus.org/releases/libmodbus-$(LIBMODBUS_VERSION).tar.gz | tar xz
-
-$(LIBMODBUS_DIR)/Makefile: | $(LIBMODBUS_DIR)
-	cd $(LIBMODBUS_DIR) && \
-	./configure --host=$(ARCH) --prefix=$(LIBMODBUS_DIR)
-
-$(LIBMODBUS): $(LIBMODBUS_DIR)/Makefile
-	make -C $(LIBMODBUS_DIR) -j install
-
 # docker build container targets
 %.eap:
 	DOCKER_BUILDKIT=1 docker build --build-arg ARCH=$(basename $@) -o type=local,dest=. "$(CURDIR)"
 
 dockerbuild: armv7hf.eap aarch64.eap
 
 # clean targets
-3rd-party-clean:
-	make -C $(LIBMODBUS_DIR) clean
-
 clean:
-	rm -f $(PROG) *.o *.eap *LICENSE.txt pa*conf*
+	$(RM) $(PROG) *.o *.eap *LICENSE.txt pa*conf*
 
-very-clean: clean 3rd-party-clean
-	rm -rf *.eap *.eap.old eap $(LIBMODBUS_DIR)
+very-clean: clean
+	$(RM) *.old

manifest.json

@@ -1,13 +1,13 @@
 {
-    "schemaVersion": "1.3",
+    "schemaVersion": "1.7.0",
     "acapPackageConf": {
         "setup": {
             "appName": "modbusacap",
             "friendlyName": "Modbus Prototype", 
             "vendor": "Axis Communications AB",
-            "embeddedSdkVersion": "2.0",
+            "embeddedSdkVersion": "3.0",
             "runMode": "respawn",
-            "version": "1.1.2"
+            "version": "1.2.0"
         },
         "configuration": {
             "paramConfig": [