Docker build for FreeBSD aarch64 (#642)

* use gotson/freebsd-cross-build:aarch64-11.4 to compile for FreeBSD aarch64

* add native lib to allow easier testing

Makefile

@@ -111,7 +111,7 @@ NATIVE_TARGET_DIR:=$(TARGET)/classes/org/sqlite/native/$(OS_NAME)/$(OS_ARCH)
 NATIVE_DLL:=$(NATIVE_DIR)/$(LIBNAME)
 
 # For cross-compilation, install docker. See also https://github.com/dockcross/dockcross
-native-all: native win32 win64 mac64 linux32 linux64 freebsd32 freebsd64 linux-arm linux-armv6 linux-armv7 linux-arm64 linux-android-arm linux-ppc64 alpine-linux64
+native-all: native win32 win64 mac64 linux32 linux64 freebsd32 freebsd64 freebsd-arm64 linux-arm linux-armv6 linux-armv7 linux-arm64 linux-android-arm linux-ppc64 alpine-linux64
 
 native: $(NATIVE_DLL)
 
@@ -141,6 +141,9 @@ freebsd32: $(SQLITE_UNPACKED) jni-header
 freebsd64: $(SQLITE_UNPACKED) jni-header
 	docker run $(DOCKER_RUN_OPTS) -ti -v $$PWD:/workdir empterdose/freebsd-cross-build:9.3 sh -c 'apk add bash; apk add openjdk8; apk add perl; make clean-native native OS_NAME=FreeBSD OS_ARCH=x86_64 CROSS_PREFIX=x86_64-freebsd9-'
 
+freebsd-arm64: $(SQLITE_UNPACKED) jni-header
+	docker run $(DOCKER_RUN_OPTS) -ti -v $$PWD:/workdir gotson/freebsd-cross-build:aarch64-11.4 sh -c 'make clean-native native OS_NAME=FreeBSD OS_ARCH=aarch64 CROSS_PREFIX=aarch64-unknown-freebsd11-'
+
 alpine-linux64: $(SQLITE_UNPACKED) jni-header
 	docker run $(DOCKER_RUN_OPTS) -ti -v $$PWD:/work xerial/alpine-linux-x86_64 bash -c 'make clean-native native OS_NAME=Linux-Alpine OS_ARCH=x86_64'
 

Makefile.common

@@ -47,7 +47,7 @@ endif
 
 # os=Default is meant to be generic unix/linux
 
-known_targets := Linux-x86 Linux-x86_64 Linux-arm Linux-armv6 Linux-armv7 Linux-android-arm Linux-ppc64 Mac-x86 Mac-x86_64 Mac-aarch64 DragonFly-x86_64 FreeBSD-x86 FreeBSD-x86_64 OpenBSD-x86_64 Windows-x86 Windows-x86_64 SunOS-sparcv9 HPUX-ia64_32
+known_targets := Linux-x86 Linux-x86_64 Linux-arm Linux-armv6 Linux-armv7 Linux-android-arm Linux-ppc64 Mac-x86 Mac-x86_64 Mac-aarch64 DragonFly-x86_64 FreeBSD-x86 FreeBSD-x86_64 FreeBSD-aarch64 OpenBSD-x86_64 Windows-x86 Windows-x86_64 SunOS-sparcv9 HPUX-ia64_32
 target := $(OS_NAME)-$(OS_ARCH)
 
 ifeq (,$(findstring $(strip $(target)),$(known_targets)))
@@ -134,6 +134,13 @@ FreeBSD-x86_64_LINKFLAGS := -shared
 FreeBSD-x86_64_LIBNAME   := libsqlitejdbc.so
 FreeBSD-x86_64_SQLITE_FLAGS  :=
 
+FreeBSD-aarch64_CC        := $(CROSS_PREFIX)clang
+FreeBSD-aarch64_STRIP     := $(CROSS_PREFIX)strip
+FreeBSD-aarch64_CCFLAGS   := -I$(JAVA_HOME)/include -Ilib/inc_linux -Os -fPIC -fvisibility=hidden
+FreeBSD-aarch64_LINKFLAGS := -shared
+FreeBSD-aarch64_LIBNAME   := libsqlitejdbc.so
+FreeBSD-aarch64_SQLITE_FLAGS  :=
+
 OpenBSD-x86_64_CC        := $(CROSS_PREFIX)gcc
 OpenBSD-x86_64_STRIP     := $(CROSS_PREFIX)strip
 OpenBSD-x86_64_CCFLAGS   := -I$(JAVA_HOME)/include -Ilib/inc_linux -Os -fPIC -fvisibility=hidden