Pass LLVM_DEFAULT_TARGET_TRIPLE to cmake

This will ensure that clang always defaults the system gcc install.

0001-XFAIL-missing-abstract-variable.ll-test-on-ppc64le.patch

@@ -0,0 +1,33 @@
+From 9320ffeda3915c8f7be744c983a3470a89107bd7 Mon Sep 17 00:00:00 2001
+From: Tom Stellard <tstellar@redhat.com>
+Date: Tue, 14 Sep 2021 20:21:20 -0700
+Subject: [PATCH] XFAIL missing-abstract-variable.ll test on ppc64le
+
+It's seems the strategy with this test is to XFAIL it on all
+architectures that it fails on.  I wonder if we should be passing
+it a specific triple?  Also, from what I can tell, this tests only
+runs when llvm is configured with LLVM_DEFAULT_TARGET_TRIPLE set
+to a non-empty value, which is why it may not fail in every build
+configuration.
+
+Differential Revision: https://reviews.llvm.org/D109806
+---
+ llvm/test/DebugInfo/Generic/missing-abstract-variable.ll | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/llvm/test/DebugInfo/Generic/missing-abstract-variable.ll b/llvm/test/DebugInfo/Generic/missing-abstract-variable.ll
+index bd0de60268b6..cc5d56b0c512 100644
+--- a/llvm/test/DebugInfo/Generic/missing-abstract-variable.ll
++++ b/llvm/test/DebugInfo/Generic/missing-abstract-variable.ll
+@@ -4,7 +4,7 @@
+ ; powerpc64 (and on x86_64 at at least -O2). Presumably this is a SelectionDAG
+ ; issue.
+ ; FIXME: arm64 is an alias for aarch64 on macs, apparently?
+-; XFAIL: powerpc64, aarch64, arm64, hexagon
++; XFAIL: powerpc64, aarch64, arm64, hexagon, ppc64le
+ 
+ ; Build from the following source with clang -O2.
+ 
+-- 
+2.31.1
+

llvm.spec

@@ -54,7 +54,7 @@
 
 Name:		%{pkg_name}
 Version:	%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:~rc%{rc_ver}}
-Release:	2%{?dist}
+Release:	3%{?dist}
 Summary:	The Low Level Virtual Machine
 
 License:	NCSA
@@ -71,6 +71,7 @@ Source4:	lit.fedora.cfg.py
 Patch0:		0001-cmake-Allow-shared-libraries-to-customize-the-soname.patch
 # This has been backported to release/13.x and should be in 13.0.0-rc2
 Patch1:		0001-test-Fix-tools-gold-X86-comdat-nodeduplicate.ll-on-n.patch
+Patch2:		0001-XFAIL-missing-abstract-variable.ll-test-on-ppc64le.patch
 
 BuildRequires:	gcc
 BuildRequires:	gcc-c++
@@ -208,6 +209,8 @@ pathfix.py -i %{__python3} -pn \
 %endif
 
 # force off shared libs as cmake macros turns it on.
+# We need to set LLVM_DEFAULT_TARGET_TRIPLE, because llvm fails to detect it
+# correctly.
 %cmake  -G Ninja \
 	-DBUILD_SHARED_LIBS:BOOL=OFF \
 	-DLLVM_PARALLEL_LINK_JOBS=1 \
@@ -271,6 +274,7 @@ pathfix.py -i %{__python3} -pn \
 	-DLLVM_INSTALL_TOOLCHAIN_ONLY:BOOL=OFF \
 	-DLLVM_ABI_REVISION=%{abi_revision} \
 	\
+	-DLLVM_DEFAULT_TARGET_TRIPLE=%{_host} \
 	-DSPHINX_WARNINGS_AS_ERRORS=OFF \
 	-DCMAKE_INSTALL_PREFIX=%{install_prefix} \
 	-DLLVM_INSTALL_SPHINX_HTML_DIR=%{_pkgdocdir}/html \
@@ -533,6 +537,9 @@ fi
 %endif
 
 %changelog
+* Mon Sep 13 2021 Tom Stellard <tstellar@redhat.com> - 13.0.0~rc1-3
+- Pass LLVM_DEFAULT_TARGET_TRIPLE to cmake
+
 * Mon Sep 13 2021 Konrad Kleine <kkleine@redhat.com> - 13.0.0~rc1-2
 - Add --without=check option