1) Provide a better error message for the "Rust not available" case.
Without this patch, one gets various misleading messages, such as:
"No rule to make target 'rust-analyzer'"
Instead, run scripts/rust_is_available.sh directly, as a prerequisite,
and let that script report the cause of any problems, as well as
providing a link to the documentation. Thanks to Miguel Ojeda for the
idea of just letting rust_is_available.sh report its results directly.
The new output in the failure case looks like this:
$ make rust-analyzer
***
*** Rust compiler 'rustc' could not be found.
***
***
*** Please see Documentation/rust/quick-start.rst for details
*** on how to set up the Rust support.
***
make[1]: *** [/kernel_work/linux-github/Makefile:1975: rust-analyzer] Error 1
make: *** [Makefile:240: __sub-make] Error 2
Cc: Alice Ryhl <aliceryhl@xxxxxxxxxx>
Acked-by: Miguel Ojeda <ojeda@xxxxxxxxxx>
Signed-off-by: John Hubbard <jhubbard@xxxxxxxxxx>
---
Makefile | 1 +
1 file changed, 1 insertion(+)
diff --git a/Makefile b/Makefile
index 14427547dc1e..07308277a6f5 100644
--- a/Makefile
+++ b/Makefile
@@ -1970,6 +1970,7 @@ tags TAGS cscope gtags: FORCE
# IDE support targets
PHONY += rust-analyzer
rust-analyzer:
+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/rust_is_available.sh
$(Q)$(MAKE) $(build)=rust $@
# Script to generate missing namespace dependencies
--
2.45.2
