diff --git a/.ci_support/linux_64_.yaml b/.ci_support/linux_64_.yaml
index 334e550..e0b4086 100644
--- a/.ci_support/linux_64_.yaml
+++ b/.ci_support/linux_64_.yaml
@@ -5,9 +5,9 @@ c_compiler_version:
 cdt_name:
 - cos6
 channel_sources:
-- conda-forge
+- conda-forge/label/llvm_rc,conda-forge
 channel_targets:
-- conda-forge main
+- conda-forge llvm_rc
 cxx_compiler:
 - gxx
 cxx_compiler_version:
diff --git a/.ci_support/win_64_.yaml b/.ci_support/win_64_.yaml
index c09f40f..eb1ff89 100644
--- a/.ci_support/win_64_.yaml
+++ b/.ci_support/win_64_.yaml
@@ -1,9 +1,9 @@
 c_compiler:
 - vs2019
 channel_sources:
-- conda-forge
+- conda-forge/label/llvm_rc,conda-forge
 channel_targets:
-- conda-forge main
+- conda-forge llvm_rc
 cxx_compiler:
 - vs2019
 target_platform:
diff --git a/.gitignore b/.gitignore
index c89ecb7..179afe5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,24 @@
-*.pyc
+# User content belongs under recipe/.
+# Feedstock configuration goes in `conda-forge.yml`
+# Everything else is managed by the conda-smithy rerender process.
+# Please do not modify
+
+# Ignore all files and folders in root
+*
+!/conda-forge.yml
+
+# Don't ignore any files/folders if the parent folder is 'un-ignored'
+# This also avoids warnings when adding an already-checked file with an ignored parent.
+!/**/
+# Don't ignore any files/folders recursively in the following folders
+!/recipe/**
+!/.ci_support/**
 
-build_artifacts
+# Since we ignore files/folders recursively, any folders inside
+# build_artifacts gets ignored which trips some build systems.
+# To avoid that we 'un-ignore' all files/folders recursively
+# and only ignore the root build_artifacts folder.
+!/build_artifacts/**
+/build_artifacts
+
+*.pyc
diff --git a/.scripts/build_steps.sh b/.scripts/build_steps.sh
index 5382195..f017291 100755
--- a/.scripts/build_steps.sh
+++ b/.scripts/build_steps.sh
@@ -54,12 +54,6 @@ if [[ -f "${FEEDSTOCK_ROOT}/LICENSE.txt" ]]; then
   cp "${FEEDSTOCK_ROOT}/LICENSE.txt" "${RECIPE_ROOT}/recipe-scripts-license.txt"
 fi
 
-if [[ "${sha:-}" == "" ]]; then
-  pushd ${FEEDSTOCK_ROOT}
-  sha=$(git rev-parse HEAD)
-  popd
-fi
-
 if [[ "${BUILD_WITH_CONDA_DEBUG:-0}" == 1 ]]; then
     if [[ "x${BUILD_OUTPUT_ID:-}" != "x" ]]; then
         EXTRA_CB_OPTIONS="${EXTRA_CB_OPTIONS:-} --output-id ${BUILD_OUTPUT_ID}"
diff --git a/.scripts/run_docker_build.sh b/.scripts/run_docker_build.sh
index b70ef01..00f377a 100755
--- a/.scripts/run_docker_build.sh
+++ b/.scripts/run_docker_build.sh
@@ -21,6 +21,12 @@ if [ -z ${FEEDSTOCK_NAME} ]; then
     export FEEDSTOCK_NAME=$(basename ${FEEDSTOCK_ROOT})
 fi
 
+if [[ "${sha:-}" == "" ]]; then
+  pushd "${FEEDSTOCK_ROOT}"
+  sha=$(git rev-parse HEAD)
+  popd
+fi
+
 docker info
 
 # In order for the conda-build process in the container to write to the mounted
diff --git a/README.md b/README.md
index e925350..c325f9e 100644
--- a/README.md
+++ b/README.md
@@ -64,14 +64,14 @@ Current release info
 Installing flang
 ================
 
-Installing `flang` from the `conda-forge` channel can be achieved by adding `conda-forge` to your channels with:
+Installing `flang` from the `conda-forge/label/llvm_rc` channel can be achieved by adding `conda-forge/label/llvm_rc` to your channels with:
 
 ```
-conda config --add channels conda-forge
+conda config --add channels conda-forge/label/llvm_rc
 conda config --set channel_priority strict
 ```
 
-Once the `conda-forge` channel has been enabled, `flang, flang_linux-64, flang_win-64, libflang, libfortran-main` can be installed with `conda`:
+Once the `conda-forge/label/llvm_rc` channel has been enabled, `flang, flang_linux-64, flang_win-64, libflang, libfortran-main` can be installed with `conda`:
 
 ```
 conda install flang flang_linux-64 flang_win-64 libflang libfortran-main
@@ -86,26 +86,26 @@ mamba install flang flang_linux-64 flang_win-64 libflang libfortran-main
 It is possible to list all of the versions of `flang` available on your platform with `conda`:
 
 ```
-conda search flang --channel conda-forge
+conda search flang --channel conda-forge/label/llvm_rc
 ```
 
 or with `mamba`:
 
 ```
-mamba search flang --channel conda-forge
+mamba search flang --channel conda-forge/label/llvm_rc
 ```
 
 Alternatively, `mamba repoquery` may provide more information:
 
 ```
 # Search all versions available on your platform:
-mamba repoquery search flang --channel conda-forge
+mamba repoquery search flang --channel conda-forge/label/llvm_rc
 
 # List packages depending on `flang`:
-mamba repoquery whoneeds flang --channel conda-forge
+mamba repoquery whoneeds flang --channel conda-forge/label/llvm_rc
 
 # List dependencies of `flang`:
-mamba repoquery depends flang --channel conda-forge
+mamba repoquery depends flang --channel conda-forge/label/llvm_rc
 ```
 
 
diff --git a/recipe/conda_build_config.yaml b/recipe/conda_build_config.yaml
new file mode 100644
index 0000000..b2aedab
--- /dev/null
+++ b/recipe/conda_build_config.yaml
@@ -0,0 +1,5 @@
+channel_targets:
+  - conda-forge llvm_rc
+
+channel_sources:
+  - conda-forge/label/llvm_rc,conda-forge
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 5c7a5d1..2608c04 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -1,4 +1,4 @@
-{% set version = "17.0.6" %}
+{% set version = "18.1.0.rc1" %}
 
 package:
   name: flang-split
@@ -6,7 +6,7 @@ package:
 
 source:
   url: https://github.com/llvm/llvm-project/releases/download/llvmorg-{{ version.replace(".rc", "-rc") }}/llvm-project-{{ version.replace(".rc", "rc") }}.src.tar.xz
-  sha256: 58a8818c60e6627064f312dbf46c02d9949956558340938b71cf731ad8bc0813
+  sha256: eb1a2751408e4cbb08b152285b23dea00e4a1bc2cd28c0df90fe1ce699671154
 
 build:
   number: 0