delve: add package

Signed-off-by: Niels Widger <niels@qacafe.com>

devel/delve/Makefile

+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=delve
+PKG_VERSION:=1.6.1
+PKG_RELEASE:=1
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://codeload.github.com/go-delve/delve/tar.gz/v$(PKG_VERSION)?
+PKG_HASH:=e73f7fc063632268d3bdf53486aeafd98cceb8f86f4af56903dedfebaefe690d
+
+PKG_LICENSE:=MIT
+PKG_LICENSE_FILES:=LICENSE
+PKG_MAINTAINER:=Niels Widger <niels@qacafe.com>
+
+PKG_BUILD_DEPENDS:=golang/host
+PKG_BUILD_PARALLEL:=1
+PKG_USE_MIPS16:=0
+
+GO_PKG:=github.com/go-delve/delve/
+GO_PKG_BUILD_PKG:=github.com/go-delve/delve/cmd/dlv/
+GO_PKG_LDFLAGS_X:=main.Build=$(PKG_VERSION)
+
+include $(INCLUDE_DIR)/package.mk
+include ../../lang/golang/golang-package.mk
+
+# this is a subset of $(GO_ARCH_DEPENDS) as delve does not support all
+# architectures, see build constraints in
+# https://github.com/go-delve/delve/blob/v$(PKG_VERSION)/pkg/proc/native/support_sentinel.go
+DELVE_GO_ARCH_DEPENDS:=@(aarch64||i386||x86_64)
+
+define Package/delve
+  SECTION:=devel
+  CATEGORY:=Development
+  TITLE:=Debugger for the Go programming language
+  URL:=https://github.com/go-delve/delve
+  DEPENDS:=$(DELVE_GO_ARCH_DEPENDS)
+endef
+
+define Package/delve/description
+  Delve is a debugger for the Go programming language. The goal of the
+  project is to provide a simple, full featured debugging tool for Go.
+  Delve should be easy to invoke and easy to use. Chances are if you're
+  using a debugger, things aren't going your way. With that in mind,
+  Delve should stay out of your way as much as possible.
+endef
+
+$(eval $(call GoBinPackage,delve))
+$(eval $(call BuildPackage,delve))