diff --git a/conda-recipes/compiler-rt-macos-build.patch b/conda-recipes/compiler-rt-macos-build.patch
new file mode 100644
index 000000000..acba23c36
--- /dev/null
+++ b/conda-recipes/compiler-rt-macos-build.patch
@@ -0,0 +1,15 @@
+diff --git a/cmake/Modules/CompilerRTDarwinUtils.cmake b/cmake/Modules/CompilerRTDarwinUtils.cmake
+index 3209715..6df7318 100644
+--- a/compiler-rt-14.0.6.src/cmake/Modules/CompilerRTDarwinUtils.cmake
++++ b/compiler-rt-14.0.6.src/cmake/Modules/CompilerRTDarwinUtils.cmake
+@@ -390,7 +390,9 @@ endfunction()
+ macro(darwin_add_builtin_libraries)
+   set(DARWIN_EXCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/Darwin-excludes)
+
+-  set(CFLAGS "-fPIC -O3 -fvisibility=hidden -DVISIBILITY_HIDDEN -Wall -fomit-frame-pointer")
++  set(CFLAGS "-fPIC -O3 -Wall -fomit-frame-pointer")
++  append_list_if(COMPILER_RT_BUILTINS_HIDE_SYMBOLS -fvisibility=hidden -DVISIBILITY_HIDDEN CFLAGS)
++
+   set(CMAKE_C_FLAGS "")
+   set(CMAKE_CXX_FLAGS "")
+   set(CMAKE_ASM_FLAGS "")
diff --git a/conda-recipes/compiler-rt-windows-build.patch b/conda-recipes/compiler-rt-windows-build.patch
new file mode 100644
index 000000000..74a6ed3ff
--- /dev/null
+++ b/conda-recipes/compiler-rt-windows-build.patch
@@ -0,0 +1,26 @@
+From be79c54f618affc9c4797a5331486fc891d2a4a4 Mon Sep 17 00:00:00 2001
+From: Graham Markall <gmarkall@nvidia.com>
+Date: Fri, 11 Aug 2023 11:31:08 +0100
+Subject: [PATCH] Fix out-of-tree compiler-rt build on Windows
+
+From:
+
+https://stackoverflow.com/questions/46108390/building-llvm-with-cmake-and-visual-stuidio-fails-to-install
+---
+ compiler-rt/cmake/Modules/AddCompilerRT.cmake | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/compiler-rt-14.0.6.src/cmake/Modules/AddCompilerRT.cmake b/compiler-rt-14.0.6.src/cmake/Modules/AddCompilerRT.cmake
+index 4a496fc18f65..2ace529a595d 100644
+--- a/compiler-rt-14.0.6.src/cmake/Modules/AddCompilerRT.cmake
++++ b/compiler-rt-14.0.6.src/cmake/Modules/AddCompilerRT.cmake
+@@ -9,6 +9,7 @@ function(set_target_output_directories target output_dir)
+   # set 'RUNTIME_OUTPUT_DIRECTORY_${CONF}':
+   # RUNTIME_OUTPUT_DIRECTORY_DEBUG, RUNTIME_OUTPUT_DIRECTORY_RELEASE, ...
+   if(CMAKE_CONFIGURATION_TYPES)
++    string(REGEX REPLACE "\\$\\(Configuration\\)" "$<CONFIG>" output_dir "${output_dir}")
+     foreach(build_mode ${CMAKE_CONFIGURATION_TYPES})
+       string(TOUPPER "${build_mode}" CONFIG_SUFFIX)
+       set_target_properties("${target}" PROPERTIES
+--
+2.40.0
diff --git a/conda-recipes/llvmdev/bld.bat b/conda-recipes/llvmdev/bld.bat
index 4d16d84b1..f4035ab84 100644
--- a/conda-recipes/llvmdev/bld.bat
+++ b/conda-recipes/llvmdev/bld.bat
@@ -3,6 +3,8 @@ FOR /D %%d IN (llvm-*.src) DO (MKLINK /J llvm %%d
 if !errorlevel! neq 0 exit /b %errorlevel%)
 FOR /D %%d IN (lld-*.src) DO (MKLINK /J lld %%d
 if !errorlevel! neq 0 exit /b %errorlevel%)
+FOR /D %%d IN (rt\compiler-rt-*.src) DO (MKLINK /J compiler-rt %%d
+if !errorlevel! neq 0 exit /b %errorlevel%)
 FOR /D %%d IN (unwind\libunwind-*.src) DO (MKLINK /J libunwind %%d
 if !errorlevel! neq 0 exit /b %errorlevel%)
 
@@ -33,18 +35,14 @@ REM the 64bit linker anyway. This must be passed in to certain generators as
 REM '-Thost x64'.
 set PreferredToolArchitecture=x64
 
-set MAX_INDEX_CMAKE_GENERATOR=0
-
-set "CMAKE_GENERATOR[0]=Visual Studio 16 2019"
-
-set "CMAKE_GENERATOR_ARCHITECTURE[0]=%GEN_ARCH%"
-
-set "CMAKE_GENERATOR_TOOLSET[0]=v142"
+set "CMAKE_GENERATOR=Visual Studio 16 2019"
+set "CMAKE_GENERATOR_ARCHITECTURE=%GEN_ARCH%"
+set "CMAKE_GENERATOR_TOOLSET=v142"
 
 REM Reduce build times and package size by removing unused stuff
 REM BENCHMARKS (new for llvm8) don't build under Visual Studio 14 2015
 set CMAKE_CUSTOM=-DLLVM_TARGETS_TO_BUILD="%LLVM_TARGETS_TO_BUILD%" ^
-    -DLLVM_ENABLE_PROJECTS:STRING=lld ^
+    -DLLVM_ENABLE_PROJECTS:STRING=lld;compiler-rt ^
     -DLLVM_ENABLE_ZLIB=OFF ^
     -DLLVM_INCLUDE_UTILS=ON ^
     -DLLVM_INCLUDE_DOCS=OFF ^
@@ -53,28 +51,28 @@ set CMAKE_CUSTOM=-DLLVM_TARGETS_TO_BUILD="%LLVM_TARGETS_TO_BUILD%" ^
     -DLLVM_USE_INTEL_JITEVENTS=ON ^
     -DLLVM_INCLUDE_BENCHMARKS=OFF ^
     -DLLVM_ENABLE_DIA_SDK=OFF ^
-    -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly
-
-REM try all compatible visual studio toolsets to find one that is installed
-setlocal enabledelayedexpansion
-for /l %%n in (0,1,%MAX_INDEX_CMAKE_GENERATOR%) do (
-    cmake -G "!CMAKE_GENERATOR[%%n]!" ^
-          -A "!CMAKE_GENERATOR_ARCHITECTURE[%%n]!" ^
-          -T "!CMAKE_GENERATOR_TOOLSET[%%n]!" ^
-          -DCMAKE_BUILD_TYPE="%BUILD_CONFIG%" ^
-          -DCMAKE_PREFIX_PATH="%LIBRARY_PREFIX%" ^
-          -DCMAKE_INSTALL_PREFIX:PATH="%LIBRARY_PREFIX%" ^
-          %CMAKE_CUSTOM% "%SRC_DIR%\llvm"
-    if not errorlevel 1 goto configuration_successful
-    del CMakeCache.txt
-)
+    -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly ^
+    -DCOMPILER_RT_BUILD_LIBFUZZER:BOOL=OFF ^
+    -DCOMPILER_RT_BUILD_CRT:BOOL=OFF ^
+    -DCOMPILER_RT_BUILD_MEMPROF:BOOL=OFF ^
+    -DCOMPILER_RT_BUILD_PROFILE:BOOL=OFF ^
+    -DCOMPILER_RT_BUILD_SANITIZERS:BOOL=OFF ^
+    -DCOMPILER_RT_BUILD_XRAY:BOOL=OFF ^
+    -DCOMPILER_RT_BUILD_GWP_ASAN:BOOL=OFF ^
+    -DCOMPILER_RT_BUILD_ORC:BOOL=OFF ^
+    -DCOMPILER_RT_INCLUDE_TESTS:BOOL=OFF
+
+cmake -G "%CMAKE_GENERATOR%" ^
+      -A "%CMAKE_GENERATOR_ARCHITECTURE%" ^
+      -T "%CMAKE_GENERATOR_TOOLSET%" ^
+      -DCMAKE_BUILD_TYPE="%BUILD_CONFIG%" ^
+      -DCMAKE_PREFIX_PATH="%LIBRARY_PREFIX%" ^
+      -DCMAKE_INSTALL_PREFIX:PATH="%LIBRARY_PREFIX%" ^
+      %CMAKE_CUSTOM% "%SRC_DIR%\llvm"
 
 REM no compatible visual studio toolset was found
 if errorlevel 1 exit 1
 
-:configuration_successful
-endlocal
-
 REM === Build step ===
 cmake --build . --config "%BUILD_CONFIG%"
 if errorlevel 1 exit 1
diff --git a/conda-recipes/llvmdev/build.sh b/conda-recipes/llvmdev/build.sh
index caccfe127..2a14ba391 100644
--- a/conda-recipes/llvmdev/build.sh
+++ b/conda-recipes/llvmdev/build.sh
@@ -10,18 +10,21 @@ LLVM_TARGETS_TO_BUILD=${LLVM_TARGETS_TO_BUILD:-"all"}
 # This is the clang compiler prefix
 if [[ $build_platform == osx-arm64 ]]; then
     DARWIN_TARGET=arm64-apple-darwin20.0.0
+    DARWIN_ARCH=arm64
 else
     DARWIN_TARGET=x86_64-apple-darwin13.4.0
+    DARWIN_ARCH=x86_64
 fi
 
 mv llvm-*.src llvm
 mv lld-*.src lld
+mv rt/compiler-rt-*.src compiler-rt
 mv unwind/libunwind-*.src libunwind
 
 declare -a _cmake_config
 _cmake_config+=(-DCMAKE_INSTALL_PREFIX:PATH=${PREFIX})
 _cmake_config+=(-DCMAKE_BUILD_TYPE:STRING=Release)
-_cmake_config+=(-DLLVM_ENABLE_PROJECTS:STRING="lld")
+_cmake_config+=(-DLLVM_ENABLE_PROJECTS:STRING="lld;compiler-rt")
 # The bootstrap clang I use was built with a static libLLVMObject.a and I trying to get the same here
 # _cmake_config+=(-DBUILD_SHARED_LIBS:BOOL=ON)
 _cmake_config+=(-DLLVM_ENABLE_ASSERTIONS:BOOL=ON)
@@ -44,6 +47,17 @@ _cmake_config+=(-DLLVM_TARGETS_TO_BUILD=${LLVM_TARGETS_TO_BUILD})
 _cmake_config+=(-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly)
 _cmake_config+=(-DLLVM_INCLUDE_UTILS=ON) # for llvm-lit
 _cmake_config+=(-DLLVM_INCLUDE_BENCHMARKS:BOOL=OFF) # doesn't build without the rest of LLVM project
+_cmake_config+=(-DCOMPILER_RT_BUILD_BUILTINS:BOOL=ON)
+_cmake_config+=(-DCOMPILER_RT_BUILTINS_HIDE_SYMBOLS=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_LIBFUZZER:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_CRT:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_MEMPROF:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_PROFILE:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_SANITIZERS:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_XRAY:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_GWP_ASAN:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_ORC:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_INCLUDE_TESTS:BOOL=OFF) # Requires clang to be built
 # TODO :: It would be nice if we had a cross-ecosystem 'BUILD_TIME_LIMITED' env var we could use to
 #         disable these unnecessary but useful things.
 if [[ ${CONDA_FORGE} == yes ]]; then
@@ -63,7 +77,7 @@ if [[ $(uname) == Darwin ]]; then
   # Once we are using our libc++ (not until llvm_build_final), it will be single-arch only and not setting
   # this causes link failures building the santizers since they respect DARWIN_osx_ARCHS. We may as well
   # save some compilation time by setting this for all of our llvm builds.
-  _cmake_config+=(-DDARWIN_osx_ARCHS=x86_64)
+  _cmake_config+=(-DDARWIN_osx_ARCHS=${DARWIN_ARCH})
 elif [[ $(uname) == Linux ]]; then
   _cmake_config+=(-DLLVM_USE_INTEL_JITEVENTS=ON)
 #  _cmake_config+=(-DLLVM_BINUTILS_INCDIR=${PREFIX}/lib/gcc/${cpu_arch}-${vendor}-linux-gnu/${compiler_ver}/plugin/include)
diff --git a/conda-recipes/llvmdev/meta.yaml b/conda-recipes/llvmdev/meta.yaml
index 7676d234e..6520312bc 100644
--- a/conda-recipes/llvmdev/meta.yaml
+++ b/conda-recipes/llvmdev/meta.yaml
@@ -3,7 +3,8 @@
 {% set sha256_llvm = "050922ecaaca5781fdf6631ea92bc715183f202f9d2f15147226f023414f619a" %}
 {% set sha256_lld = "0c28ce0496934d37d20fec96591032dd66af8d10178a45762e0e75e85cf95ad3" %}
 {% set sha256_libunwind = "3bbe9c23c73259fe39c045dc87d0b283236ba6e00750a226b2c2aeac4a51d86b" %}
-{% set build_number = "3" %}
+{% set sha256_compiler_rt = "88df303840ca8fbff944e15e61c141226fe79f5d2b8e89fb024264d77841a02e" %}
+{% set build_number = "4" %}
 
 package:
   name: llvmdev
@@ -17,6 +18,7 @@ source:
     - ../llvm14-clear-gotoffsetmap.patch
     - ../llvm14-remove-use-of-clonefile.patch
     - ../llvm14-svml.patch
+
   - url: https://github.com/llvm/llvm-project/releases/download/llvmorg-{{ version }}/lld-{{ version }}.src.tar.xz
     fn: lld-{{ version }}.src.tar.xz
     sha256: {{ sha256_lld }}
@@ -26,6 +28,14 @@ source:
     sha256: {{ sha256_libunwind }}
     folder: unwind
 
+  - url: https://github.com/llvm/llvm-project/releases/download/llvmorg-{{ version }}/compiler-rt-{{ version }}.src.tar.xz
+    fn: compiler-rt-{{ version }}.src.tar.xz
+    sha256: {{ sha256_compiler_rt }}
+    folder: rt
+    patches:
+    - ../compiler-rt-windows-build.patch
+    - ../compiler-rt-macos-build.patch
+
 build:
   number: {{ build_number }}
   script_env:
diff --git a/conda-recipes/llvmdev_manylinux2014/build.sh b/conda-recipes/llvmdev_manylinux2014/build.sh
index 3955c1e5b..8af2f04da 100644
--- a/conda-recipes/llvmdev_manylinux2014/build.sh
+++ b/conda-recipes/llvmdev_manylinux2014/build.sh
@@ -16,12 +16,13 @@ fi
 
 mv llvm-*.src llvm
 mv lld-*.src lld
+mv rt/compiler-rt-*.src compiler-rt
 mv unwind/libunwind-*.src libunwind
 
 declare -a _cmake_config
 _cmake_config+=(-DCMAKE_INSTALL_PREFIX:PATH=${PREFIX})
 _cmake_config+=(-DCMAKE_BUILD_TYPE:STRING=Release)
-_cmake_config+=(-DLLVM_ENABLE_PROJECTS:STRING="lld")
+_cmake_config+=(-DLLVM_ENABLE_PROJECTS:STRING="lld;compiler-rt")
 # The bootstrap clang I use was built with a static libLLVMObject.a and I trying to get the same here
 # _cmake_config+=(-DBUILD_SHARED_LIBS:BOOL=ON)
 _cmake_config+=(-DLLVM_ENABLE_ASSERTIONS:BOOL=ON)
@@ -44,6 +45,16 @@ _cmake_config+=(-DLLVM_TARGETS_TO_BUILD=${LLVM_TARGETS_TO_BUILD})
 _cmake_config+=(-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly)
 _cmake_config+=(-DLLVM_INCLUDE_UTILS=ON) # for llvm-lit
 _cmake_config+=(-DLLVM_INCLUDE_BENCHMARKS:BOOL=OFF) # doesn't build without the rest of LLVM project
+_cmake_config+=(-DCOMPILER_RT_BUILD_BUILTINS:BOOL=ON)
+_cmake_config+=(-DCOMPILER_RT_BUILD_LIBFUZZER:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_CRT:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_MEMPROF:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_PROFILE:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_SANITIZERS:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_XRAY:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_GWP_ASAN:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_BUILD_ORC:BOOL=OFF)
+_cmake_config+=(-DCOMPILER_RT_INCLUDE_TESTS:BOOL=OFF)
 # TODO :: It would be nice if we had a cross-ecosystem 'BUILD_TIME_LIMITED' env var we could use to
 #         disable these unnecessary but useful things.
 if [[ ${CONDA_FORGE} == yes ]]; then
@@ -92,4 +103,4 @@ fi
 make check-llvm-unit || exit $?
 
 # From: https://github.com/conda-forge/llvmdev-feedstock/pull/53
-make install || exit $?
+make install || exit $?
\ No newline at end of file
diff --git a/conda-recipes/llvmdev_manylinux2014/meta.yaml b/conda-recipes/llvmdev_manylinux2014/meta.yaml
index bcc1ca39a..c153dec59 100644
--- a/conda-recipes/llvmdev_manylinux2014/meta.yaml
+++ b/conda-recipes/llvmdev_manylinux2014/meta.yaml
@@ -3,7 +3,8 @@
 {% set sha256_llvm = "050922ecaaca5781fdf6631ea92bc715183f202f9d2f15147226f023414f619a" %}
 {% set sha256_lld = "0c28ce0496934d37d20fec96591032dd66af8d10178a45762e0e75e85cf95ad3" %}
 {% set sha256_libunwind = "3bbe9c23c73259fe39c045dc87d0b283236ba6e00750a226b2c2aeac4a51d86b" %}
-{% set build_number = "1" %}
+{% set sha256_compiler_rt = "88df303840ca8fbff944e15e61c141226fe79f5d2b8e89fb024264d77841a02e" %}
+{% set build_number = "2" %}
 
 package:
   name: llvmdev
@@ -17,6 +18,7 @@ source:
     - ../llvm14-clear-gotoffsetmap.patch
     - ../llvm14-remove-use-of-clonefile.patch
     - ../llvm14-svml.patch
+
   - url: https://github.com/llvm/llvm-project/releases/download/llvmorg-{{ version }}/lld-{{ version }}.src.tar.xz
     fn: lld-{{ version }}.src.tar.xz
     sha256: {{ sha256_lld }}
@@ -26,6 +28,11 @@ source:
     sha256: {{ sha256_libunwind }}
     folder: unwind
 
+  - url: https://github.com/llvm/llvm-project/releases/download/llvmorg-{{ version }}/compiler-rt-{{ version }}.src.tar.xz
+    fn: compiler-rt-{{ version }}.src.tar.xz
+    sha256: {{ sha256_compiler_rt }}
+    folder: rt
+
 build:
   number: {{ build_number }}
   string: "manylinux2014h{{ PKG_HASH }}"