Accepting request 688403 from home:federico-mena:branches:devel:languages:rust

- Use the system's LLVM in SLE15-SP1.  That distribution has LLVM7,
  and we need to use it there, instead of any other version.
- Prevent auto-provides from being created for things under
  rustlibdir, so the RPM does not inadvertently have a Provides for a
  bundled LLVM and the Rust library files.
- Sync changes files between SLE and openSUSE, for ease of maintenance.

OBS-URL: https://build.opensuse.org/request/show/688403
OBS-URL: https://build.opensuse.org/package/show/devel:languages:rust/rust?expand=0&rev=209

rust.spec

@@ -13,7 +13,7 @@
 # license that conforms to the Open Source Definition (Version 1.9)
 # published by the Open Source Initiative.
 
-# Please submit bugfixes or comments via https://bugs.opensuse.org/
+# Please submit bugfixes or comments via http://bugs.opensuse.org/
 #
 
 
@@ -57,12 +57,8 @@
 # Will build with distro LLVM by default, but the following
 # versions do not have a version new enough, >= 6.0
 # add --without bundled_llvm option, i.e. enable bundled_llvm by default
-# Leap 15.0, SLE 15
-%if 0%{?sle_version} == 150000
-%bcond_without bundled_llvm
-%endif
-# Leap 42 to 42.3, SLE12 SP1 to SLE12 SP3
-%if 0%{?sle_version} >= 120000 && 0%{?sle_version} <= 120400
+# Leap 42 to 42.3, SLE12 SP1 to SLE12 SP3, Leap 15.0, SLE15 SP0
+%if 0%{?sle_version} >= 120000 && 0%{?sle_version} <= 150000
 %bcond_without bundled_llvm
 %endif
 
@@ -80,6 +76,9 @@
 # Use hardening ldflags.
 %global rustflags -Clink-arg=-Wl,-z,relro,-z,now
 
+# Exclude implicitly-scanned Provides, especially the libLLVM.so ones:
+%global __provides_exclude_from ^%{rustlibdir}/.*$
+
 Name:           rust
 Version:        %{version_current}
 Release:        0