package/rust-bindgen: new host package

host-rust-bindgen will be required to build several different rust-based
packages, including a Linux kernel with rust modules and mesa3d's
rusticl which is the rust-based implementation of OpenCL.

The Cargo.toml file at the project root is a "virtual manifest". Since
we only want to install rust-bindgen, we can specify RUST_BINDGEN_SUBDIR
= bindgen-cli to use the Cargo.toml from this directory.

Signed-off-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Sebastian Weyer <sebastian.weyer@smile.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

DEVELOPERS

@@ -2649,6 +2649,7 @@ F:	package/ripgrep/
 N:	Sebastian Weyer <sebastian.weyer@smile.fr>
 F:      package/amlogic-boot-fip/
 F:	package/nushell/
+F:	package/rust-bindgen/
 F:	support/testing/tests/package/sample_nu.nu
 F:	support/testing/tests/package/test_nu.py
 

package/rust-bindgen/rust-bindgen.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256  e1cdbaa8e0ed96f647e49807aecfc44d9239d438c2b1c084edb9a3cca0b1f68f  rust-bindgen-0.65.1.tar.gz
+sha256  c23953d9deb0a3312dbeaf6c128a657f3591acee45067612fa68405eaa4525db  LICENSE

package/rust-bindgen/rust-bindgen.mk

@@ -0,0 +1,17 @@
+################################################################################
+#
+# rust-bindgen
+#
+################################################################################
+
+RUST_BINDGEN_VERSION = 0.65.1
+RUST_BINDGEN_SITE = $(call github,rust-lang,rust-bindgen,v$(RUST_BINDGEN_VERSION))
+RUST_BINDGEN_LICENSE = BSD-3-clause
+RUST_BINDGEN_LICENSE_FILES = LICENSE
+
+# The Cargo.toml at the root directory is a "virtual manifest".
+# Since we only want to build and install bindgen use the Cargo.toml
+# from the bindgen-cli subdirectory.
+RUST_BINDGEN_SUBDIR = bindgen-cli
+
+$(eval $(host-cargo-package))