rust: on i386 and powerpc, we need the internal LLVM

[Havard Eidnes <he%NetBSD.org@localhost>]

Module Name:	pkgsrc-wip
Committed By:	Havard Eidnes <he%NetBSD.org@localhost>
Pushed By:	he
Date:		Tue Jun 14 18:41:50 2022 +0000
Changeset:	05e8c50d774cc99b4bf1e5a810f6c38884b823ed

Modified Files:
	rust/options.mk

Log Message:
rust: on i386 and powerpc, we need the internal LLVM

...for a successful build.  Otherwise we get

error: unexpected `cfg` condition name
  --> library/core/src/num/dec2flt/fpu.rs:11:36
   |
11 | #[cfg(all(target_arch = "x86", not(target_feature = "sse2")))]
   |                                    ^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `-D unexpected-cfgs` implied by `-D warnings`

and

error: unexpected `cfg` condition name
  --> library/core/src/../../portable-simd/crates/core_simd/src/masks.rs:10:33
   |
10 |     all(target_arch = "x86_64", target_feature = "avx512f"),
   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^

I've not seen this error on amd64 with pkgsrc LLVM 13.0.1, have
not quite figured out why not.

To see a diff of this commit:
https://wip.pkgsrc.org/cgi-bin/gitweb.cgi?p=pkgsrc-wip.git;a=commitdiff;h=05e8c50d774cc99b4bf1e5a810f6c38884b823ed

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

diffstat:
 rust/options.mk | 6 ++++++
 1 file changed, 6 insertions(+)

diffs:
diff --git a/rust/options.mk b/rust/options.mk
index ddc7126dd7..4ed5fd4530 100644
--- a/rust/options.mk
+++ b/rust/options.mk
@@ -14,6 +14,12 @@ PKG_SUGGESTED_OPTIONS+=		rust-llvm
 .  endif
 .endif
 
+# As of 1.61,
+# The pkgsrc LLVM causes build failure on i386 and powerpc
+.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "powerpc"
+PKG_SUGGESTED_OPTIONS+=		rust-llvm
+.endif
+
 # Bundle OpenSSL and curl into the cargo binary when producing
 # bootstraps on NetBSD.
 .if ${OPSYS} == "NetBSD" && ${BUILD_TARGET} == "dist"