diff --git a/.gitignore b/.gitignore
index d368b74..5db6633 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
-SOURCES/llvm-14.0.6.src.tar.xz
-SOURCES/tstellar-gpg-key.asc
+SOURCES/cmake-15.0.0.src.tar.xz
+SOURCES/llvm-15.0.0.src.tar.xz
+SOURCES/release-keys.asc
diff --git a/.llvm.metadata b/.llvm.metadata
index 0c6a26d..55780a6 100644
--- a/.llvm.metadata
+++ b/.llvm.metadata
@@ -1,2 +1,3 @@
-975020d4f7164d84a89f0f9b2153dd870d06e02d SOURCES/llvm-14.0.6.src.tar.xz
-b8d2648a01d36ed0186fd2c5af325fd28797f9a0 SOURCES/tstellar-gpg-key.asc
+56ca883308b1b30cb981c86038eb677db9cc8eb5 SOURCES/cmake-15.0.0.src.tar.xz
+6f7f53d45ae8d207a6d72fd8ac380160f240d37e SOURCES/llvm-15.0.0.src.tar.xz
+347bdd5ee6d6b93c9644c268511815912c0fb2dc SOURCES/release-keys.asc
diff --git a/SOURCES/0001-XFAIL-missing-abstract-variable.ll-test-on-ppc64le.patch b/SOURCES/0001-XFAIL-missing-abstract-variable.ll-test-on-ppc64le.patch
index 4c4a9cf..0f4acd3 100644
--- a/SOURCES/0001-XFAIL-missing-abstract-variable.ll-test-on-ppc64le.patch
+++ b/SOURCES/0001-XFAIL-missing-abstract-variable.ll-test-on-ppc64le.patch
@@ -1,6 +1,6 @@
-From 9320ffeda3915c8f7be744c983a3470a89107bd7 Mon Sep 17 00:00:00 2001
+From 01529ba2c76be37e41713cf7f3eca8b61833e320 Mon Sep 17 00:00:00 2001
 From: Tom Stellard <tstellar@redhat.com>
-Date: Tue, 14 Sep 2021 20:21:20 -0700
+Date: Tue, 9 Nov 2021 15:05:07 +0100
 Subject: [PATCH] XFAIL missing-abstract-variable.ll test on ppc64le
 
 It's seems the strategy with this test is to XFAIL it on all
@@ -16,18 +16,18 @@ Differential Revision: https://reviews.llvm.org/D109806
  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
+index 8f8d404..07a8778 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, riscv
-+; XFAIL: powerpc64, aarch64, arm64, hexagon, riscv, ppc64le
+-; XFAIL: powerpc64, aarch64, arm64, hexagon, riscv, sparc
++; XFAIL: powerpc64, aarch64, arm64, hexagon, riscv, sparc, ppc64le
  
  ; Build from the following source with clang -O2.
  
 -- 
-2.31.1
+1.8.3.1
 
diff --git a/SOURCES/cmake-15.0.0.src.tar.xz.sig b/SOURCES/cmake-15.0.0.src.tar.xz.sig
new file mode 100644
index 0000000..a7d4549
Binary files /dev/null and b/SOURCES/cmake-15.0.0.src.tar.xz.sig differ
diff --git a/SOURCES/llvm-14.0.6.src.tar.xz.sig b/SOURCES/llvm-14.0.6.src.tar.xz.sig
deleted file mode 100644
index 5629b21..0000000
Binary files a/SOURCES/llvm-14.0.6.src.tar.xz.sig and /dev/null differ
diff --git a/SOURCES/llvm-15.0.0.src.tar.xz.sig b/SOURCES/llvm-15.0.0.src.tar.xz.sig
new file mode 100644
index 0000000..2a06f04
Binary files /dev/null and b/SOURCES/llvm-15.0.0.src.tar.xz.sig differ
diff --git a/SPECS/llvm.spec b/SPECS/llvm.spec
index c7f55b4..c1de18c 100644
--- a/SPECS/llvm.spec
+++ b/SPECS/llvm.spec
@@ -13,16 +13,12 @@
 %bcond_with compat_build
 %bcond_without check
 
-%global llvm_libdir %{_libdir}/%{name}
-%global build_llvm_libdir %{buildroot}%{llvm_libdir}
-#global rc_ver 4
-%global maj_ver 14
+#global rc_ver 3
+%global maj_ver 15
 %global min_ver 0
-%global patch_ver 6
-%if !%{maj_ver} && 0%{?rc_ver}
-%global abi_revision 2
-%endif
+%global patch_ver 0
 %global llvm_srcdir llvm-%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:rc%{rc_ver}}.src
+%global cmake_srcdir cmake-%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:rc%{rc_ver}}.src
 
 %if %{with compat_build}
 %global pkg_name llvm%{maj_ver}
@@ -44,54 +40,64 @@
 %global exec_suffix %{nil}
 %endif
 
-%if 0%{?rhel}
-%global targets_to_build "X86;AMDGPU;PowerPC;NVPTX;SystemZ;AArch64;ARM;Mips;BPF;WebAssembly"
-%global experimental_targets_to_build ""
-%global _smp_mflags -j8
-%else
-%global targets_to_build "all"
-%global experimental_targets_to_build "AVR"
-%endif
-
 %global build_install_prefix %{buildroot}%{install_prefix}
 
 # Lower memory usage of dwz on s390x
 %global _dwz_low_mem_die_limit_s390x 1
 %global _dwz_max_die_limit_s390x 1000000
 
-%ifarch %{arm}
-# koji overrides the _gnu variable to be gnu, which is not correct for clang, so
-# we need to hard-code the correct triple here.
-%global llvm_triple armv7l-redhat-linux-gnueabihf
-%else
+# https://fedoraproject.org/wiki/Changes/PythonSafePath#Opting_out
+# Don't add -P to Python shebangs
+# The executable Python scripts in /usr/share/opt-viewer/ import each other
+%undefine _py3_shebang_P
+
 %global llvm_triple %{_host}
-%endif
+################################################################################
+# OS Specific Configuration
+################################################################################
+
+########
+# RHEL #
+########
+%if 0%{?rhel}
+%global targets_to_build "X86;AMDGPU;PowerPC;NVPTX;SystemZ;AArch64;ARM;Mips;BPF;WebAssembly"
+%global experimental_targets_to_build ""
+%global _smp_mflags -j8
 
-%if !0%{?rhel}
 # libedit-devel is a buildroot-only package in RHEL8, so we can't have a
 # any run-time depencies on it.
-%global use_libedit 1
+%global use_libedit 0
+
+%else
+##########
+# FEDORA #
+##########
+%global targets_to_build "all"
+%global experimental_targets_to_build "AVR"
 %endif
 
+################################################################################
+# Spec File
+################################################################################
+
 Name:		%{pkg_name}
 Version:	%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:~rc%{rc_ver}}
-Release:	1%{?dist}
+Release:	2%{?dist}
 Summary:	The Low Level Virtual Machine
 
 License:	NCSA
 URL:		http://llvm.org
 Source0:	https://github.com/llvm/llvm-project/releases/download/llvmorg-%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:-rc%{rc_ver}}/%{llvm_srcdir}.tar.xz
 Source1:	https://github.com/llvm/llvm-project/releases/download/llvmorg-%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:-rc%{rc_ver}}/%{llvm_srcdir}.tar.xz.sig
-Source2:	tstellar-gpg-key.asc
+Source2:	https://github.com/llvm/llvm-project/releases/download/llvmorg-%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:-rc%{rc_ver}}/%{cmake_srcdir}.tar.xz
+Source3:	https://github.com/llvm/llvm-project/releases/download/llvmorg-%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:-rc%{rc_ver}}/%{cmake_srcdir}.tar.xz.sig
+Source4:	release-keys.asc
 
 %if %{without compat_build}
-Source3:	run-lit-tests
-Source4:	lit.fedora.cfg.py
+Source5:	run-lit-tests
+Source6:	lit.fedora.cfg.py
 %endif
 
-%if 0%{?abi_revision}
-Patch0:		0001-cmake-Allow-shared-libraries-to-customize-the-soname.patch
-%endif
 Patch2:		0001-XFAIL-missing-abstract-variable.ll-test-on-ppc64le.patch
 
 # RHEL-specific patches.
@@ -107,7 +113,6 @@ BuildRequires:	libffi-devel
 BuildRequires:	ncurses-devel
 BuildRequires:	python3-psutil
 BuildRequires:	python3-sphinx
-BuildRequires:	pandoc
 BuildRequires:	multilib-rpm-config
 %if %{with gold}
 BuildRequires:	binutils-devel
@@ -120,7 +125,14 @@ BuildRequires:	valgrind-devel
 # LLVM's LineEditor library will use libedit if it is available.
 BuildRequires:	libedit-devel
 %endif
-# We need python3-devel for pathfix.py.
+# Need pandoc to cover markdown to rst, because RHEL does not have recommonmark,
+# so we can't build the documentation as is.
+%if 0%{?rhel}
+BuildRequires:	pandoc
+%else
+BuildRequires:	python3-recommonmark
+%endif
+# We need python3-devel for pathfix.py and %%py3_shebang_fix.
 BuildRequires:	python3-devel
 BuildRequires:	python3-setuptools
 
@@ -211,8 +223,28 @@ LLVM's modified googletest sources.
 
 %endif
 
+%if 0%{?rhel}
+%package toolset
+Summary: Package that installs llvm-toolset
+Requires: clang = %{version}
+
+Requires: llvm = %{version}
+%ifnarch s390x
+Requires: lld = %{version}
+%endif
+
+%description toolset
+This is the main package for llvm-toolset
+%endif
+
 %prep
-%{gpgverify} --keyring='%{SOURCE2}' --signature='%{SOURCE1}' --data='%{SOURCE0}'
+%{gpgverify} --keyring='%{SOURCE4}' --signature='%{SOURCE1}' --data='%{SOURCE0}'
+%{gpgverify} --keyring='%{SOURCE4}' --signature='%{SOURCE3}' --data='%{SOURCE2}'
+%setup -T -q -b 2 -n %{cmake_srcdir}
+# TODO: It would be more elegant to set -DLLVM_COMMON_CMAKE_UTILS=%{_builddir}/%{cmake_srcdir},
+# but this is not a CACHED variable, so we can't actually set it externally :(
+cd ..
+mv %{cmake_srcdir} cmake
 %autosetup -n %{llvm_srcdir} -p2
 
 %py3_shebang_fix \
@@ -220,15 +252,14 @@ LLVM's modified googletest sources.
 	tools/opt-viewer/*.py \
 	utils/update_cc_test_checks.py
 
+%if 0%{?rhel}
 # Convert markdown files to rst to cope with the absence of compatible md parser in rhel.
 # The sed expression takes care of a slight difference between pandoc markdown and sphinx markdown.
 find -name '*.md' | while read md; do sed -r -e 's/^( )*\* /\n\1\* /' ${md} | pandoc -f markdown -o ${md%.md}.rst  ; done
+%endif
 
 %build
 
-mkdir -p %{_vpath_builddir}
-cd %{_vpath_builddir}
-
 %ifarch s390 s390x
 # Fails with "exceeded PCRE's backtracking limit"
 %global _lto_cflags %nil
@@ -236,8 +267,9 @@ cd %{_vpath_builddir}
 %global _lto_cflags -flto=thin
 %endif
 
-%ifarch s390 s390x %{arm} %ix86
+%ifarch s390 s390x %{arm} %ix86 ppc64le
 # Decrease debuginfo verbosity to reduce memory consumption during final library linking
+# On ppc64le, this is done to reduce disk usage.
 %global optflags %(echo %{optflags} | sed 's/-g /-g1 /')
 %endif
 
@@ -246,7 +278,7 @@ cd %{_vpath_builddir}
 export LDFLAGS="${LDFLAGS} -Wl,--build-id=md5"
 
 # force off shared libs as cmake macros turns it on.
-%cmake .. -G Ninja \
+%cmake -G Ninja -S . -B %{_vpath_builddir} \
 	-DBUILD_SHARED_LIBS:BOOL=OFF \
 	-DLLVM_PARALLEL_LINK_JOBS=1 \
 	-DCMAKE_BUILD_TYPE=RelWithDebInfo \
@@ -307,7 +339,6 @@ export LDFLAGS="${LDFLAGS} -Wl,--build-id=md5"
 	-DLLVM_LINK_LLVM_DYLIB:BOOL=ON \
 	-DLLVM_BUILD_EXTERNAL_COMPILER_RT:BOOL=ON \
 	-DLLVM_INSTALL_TOOLCHAIN_ONLY:BOOL=OFF \
-	%{?abi_revision:-DLLVM_ABI_REVISION=%{abi_revision}} \
 	\
 	-DLLVM_DEFAULT_TARGET_TRIPLE=%{llvm_triple} \
 	-DSPHINX_WARNINGS_AS_ERRORS=OFF \
@@ -319,8 +350,8 @@ export LDFLAGS="${LDFLAGS} -Wl,--build-id=md5"
 # Build libLLVM.so first.  This ensures that when libLLVM.so is linking, there
 # are no other compile jobs running.  This will help reduce OOM errors on the
 # builders without having to artificially limit the number of concurrent jobs.
-%ninja_build LLVM
-%ninja_build
+%ninja_build -C %{_vpath_builddir} LLVM
+%ninja_build -C %{_vpath_builddir}
 
 %install
 %ninja_install -C %{_vpath_builddir}
@@ -355,9 +386,6 @@ rm -rf test/tools/UpdateTestChecks
 install %{build_libdir}/libLLVMTestingSupport.a %{buildroot}%{_libdir}
 
 %global install_srcdir %{buildroot}%{_datadir}/llvm/src
-%global lit_cfg test/%{_arch}.site.cfg.py
-%global lit_unit_cfg test/Unit/%{_arch}.site.cfg.py
-%global lit_fedora_cfg %{_datadir}/llvm/lit.fedora.cfg.py
 
 # Install gtest sources so clang can use them for gtest
 install -d %{install_srcdir}
@@ -371,7 +399,7 @@ cp -R utils/UpdateTestChecks %{install_srcdir}/utils/
 %if %{with gold}
 # Add symlink to lto plugin in the binutils plugin directory.
 %{__mkdir_p} %{buildroot}%{_libdir}/bfd-plugins/
-ln -s %{_libdir}/LLVMgold.so %{buildroot}%{_libdir}/bfd-plugins/
+ln -s -t %{buildroot}%{_libdir}/bfd-plugins/ ../LLVMgold.so
 %endif
 
 %else
@@ -507,7 +535,7 @@ fi
 %{_libdir}/bfd-plugins/LLVMgold.so
 %endif
 %{_libdir}/libLLVM-%{maj_ver}.%{min_ver}*.so
-%{_libdir}/libLLVM-%{maj_ver}.so%{?abi_revision:.%{abi_revision}}
+%{_libdir}/libLLVM-%{maj_ver}.so
 %{_libdir}/libLTO.so*
 %else
 %config(noreplace) %{_sysconfdir}/ld.so.conf.d/%{name}-%{_arch}.conf
@@ -575,7 +603,17 @@ fi
 
 %endif
 
+%if 0%{?rhel}
+%files toolset
+%endif
+
 %changelog
+* Mon Oct 31 2022 Tom Stellard <tstellar@redhat.com> - 15.0.0-2
+- Re-enable debuginfo for ppc64le
+
+* Tue Sep 06 2022 Nikita Popov <npopov@redhat.com> - 15.0.0-1
+- Update to LLVM 15.0.0
+
 * Mon Jun 27 2022 Tom Stellard <tstellar@redhat.com> - 14.0.6-1
 - 14.0.6 Release