[Buildroot] [PATCH 4/7] package/pkg-cargo: support PURL generation

[Thomas Perale]

The PURL specification for Cargo packages follows the coordinates from
the sonatype ossindex:

https://ossindex.sonatype.org/ecosystem/cargo

- The type is defined as 'cargo'.
- The name is the package name

Signed-off-by: Thomas Perale <thomas.perale at mind.be>
---
 package/pkg-cargo.mk | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/package/pkg-cargo.mk b/package/pkg-cargo.mk
index 47a6353f25..6fb3cb8bc2 100644
--- a/package/pkg-cargo.mk
+++ b/package/pkg-cargo.mk
@@ -306,6 +306,14 @@ define $(2)_INSTALL_CMDS
 endef
 endif
 
+ifndef $(2)_PURL_TYPE
+ ifdef $(3)_PURL_TYPE
+  $(2)_PURL_TYPE = $$($(3)_PURL_TYPE)
+ else
+  $(2)_PURL_TYPE = cargo
+ endif
+endif
+
 # Call the generic package infrastructure to generate the necessary
 # make targets
 $(call inner-generic-package,$(1),$(2),$(3),$(4))
-- 
2.49.0