package/moby-buildkit: new package

Signed-off-by: Christian Stewart <christian@paral.in>
[Romain:
  - remove host-pkgconf dependency
  - Add the license file hash
  - Fix the check-package warning in Config.in]
Signed-off-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

DEVELOPERS

@@ -533,6 +533,7 @@ F:	package/fuse-overlayfs/
 F:	package/go/
 F:	package/gocryptfs/
 F:	package/mbpfan/
+F:	package/moby-buildkit/
 F:	package/mosh/
 F:	package/pkg-golang.mk
 F:	package/rtl8821au/

package/Config.in

@@ -2556,6 +2556,7 @@ menu "System tools"
 	source "package/mender/Config.in"
 	source "package/mender-grubenv/Config.in"
 	source "package/mfoc/Config.in"
+	source "package/moby-buildkit/Config.in"
 	source "package/monit/Config.in"
 	source "package/multipath-tools/Config.in"
 	source "package/ncdu/Config.in"

package/moby-buildkit/Config.in

@@ -0,0 +1,19 @@
+config BR2_PACKAGE_MOBY_BUILDKIT
+	bool "moby-buildkit"
+	depends on BR2_PACKAGE_HOST_GO_TARGET_ARCH_SUPPORTS
+	depends on BR2_PACKAGE_HOST_GO_TARGET_CGO_LINKING_SUPPORTS
+	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on !BR2_TOOLCHAIN_USES_UCLIBC
+	depends on BR2_USE_MMU
+	select BR2_PACKAGE_CGROUPFS_MOUNT if !BR2_PACKAGE_SYSTEMD # runtime dependency
+	help
+	  BuildKit is a toolkit for converting source code to build
+	  artifacts in an efficient, expressive and repeatable manner.
+
+	  https://github.com/moby/buildkit
+
+comment "moby-buildkit needs a glibc or musl toolchain w/ threads"
+	depends on BR2_PACKAGE_HOST_GO_TARGET_ARCH_SUPPORTS
+	depends on BR2_PACKAGE_HOST_GO_TARGET_CGO_LINKING_SUPPORTS
+	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_TOOLCHAIN_USES_UCLIBC
+	depends on BR2_USE_MMU

package/moby-buildkit/moby-buildkit.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256  0cc31aa4b6dcdead63b07d75e0b89495ecffcc183f4f62695d8bb507433fc8ff  moby-buildkit-0.8.1.tar.gz
+sha256  c71d239df91726fc519c6eb72d318ec65820627232b2f796219e87dcf35d0ab4  LICENSE

package/moby-buildkit/moby-buildkit.mk

@@ -0,0 +1,22 @@
+################################################################################
+#
+# moby-buildkit
+#
+################################################################################
+
+MOBY_BUILDKIT_VERSION = 0.8.1
+MOBY_BUILDKIT_SITE = $(call github,moby,buildkit,v$(MOBY_BUILDKIT_VERSION))
+MOBY_BUILDKIT_LICENSE = Apache-2.0
+MOBY_BUILDKIT_LICENSE_FILES = LICENSE
+
+MOBY_BUILDKIT_GOMOD = github.com/moby/buildkit
+
+MOBY_BUILDKIT_TAGS = cgo
+MOBY_BUILDKIT_BUILD_TARGETS = cmd/buildctl cmd/buildkitd
+
+MOBY_BUILDKIT_LDFLAGS = \
+	-X $(MOBY_BUILDKIT_GOMOD)/version.Version="$(MOBY_BUILDKIT_VERSION)"
+
+MOBY_BUILDKIT_INSTALL_BINS = $(notdir $(MOBY_BUILDKIT_BUILD_TARGETS))
+
+$(eval $(golang-package))