diff --git a/.azure-pipelines/azure-pipelines-linux.yml b/.azure-pipelines/azure-pipelines-linux.yml
index 29b3677..abf7edd 100755
--- a/.azure-pipelines/azure-pipelines-linux.yml
+++ b/.azure-pipelines/azure-pipelines-linux.yml
@@ -33,6 +33,7 @@ jobs:
         UPLOAD_PACKAGES: 'True'
         DOCKER_IMAGE: quay.io/condaforge/linux-anvil-cuda:11.8
   timeoutInMinutes: 360
+  variables: {}
 
   steps:
   - script: |
diff --git a/.azure-pipelines/azure-pipelines-osx.yml b/.azure-pipelines/azure-pipelines-osx.yml
index f3ff063..730a626 100755
--- a/.azure-pipelines/azure-pipelines-osx.yml
+++ b/.azure-pipelines/azure-pipelines-osx.yml
@@ -15,6 +15,7 @@ jobs:
         CONFIG: osx_arm64_
         UPLOAD_PACKAGES: 'True'
   timeoutInMinutes: 360
+  variables: {}
 
   steps:
   # TODO: Fast finish on azure pipelines?
diff --git a/.ci_support/linux_64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeconda.yaml b/.ci_support/linux_64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeconda.yaml
index 279332e..be0fc99 100644
--- a/.ci_support/linux_64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeconda.yaml
+++ b/.ci_support/linux_64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeconda.yaml
@@ -2,6 +2,10 @@ c_compiler:
 - gcc
 c_compiler_version:
 - '11'
+c_stdlib:
+- sysroot
+c_stdlib_version:
+- '2.17'
 cdt_name:
 - cos7
 channel_sources:
@@ -36,6 +40,7 @@ zip_keys:
 - - c_compiler_version
   - cxx_compiler_version
   - fortran_compiler_version
+  - c_stdlib_version
   - cdt_name
   - cuda_compiler
   - cuda_compiler_version
diff --git a/.ci_support/linux_64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeexternal.yaml b/.ci_support/linux_64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeexternal.yaml
index e690fc8..936e1dc 100644
--- a/.ci_support/linux_64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeexternal.yaml
+++ b/.ci_support/linux_64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeexternal.yaml
@@ -2,6 +2,10 @@ c_compiler:
 - gcc
 c_compiler_version:
 - '11'
+c_stdlib:
+- sysroot
+c_stdlib_version:
+- '2.17'
 cdt_name:
 - cos7
 channel_sources:
@@ -36,6 +40,7 @@ zip_keys:
 - - c_compiler_version
   - cxx_compiler_version
   - fortran_compiler_version
+  - c_stdlib_version
   - cdt_name
   - cuda_compiler
   - cuda_compiler_version
diff --git a/.ci_support/linux_aarch64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeconda.yaml b/.ci_support/linux_aarch64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeconda.yaml
index e6c05d7..b6addbf 100644
--- a/.ci_support/linux_aarch64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeconda.yaml
+++ b/.ci_support/linux_aarch64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeconda.yaml
@@ -4,6 +4,10 @@ c_compiler:
 - gcc
 c_compiler_version:
 - '11'
+c_stdlib:
+- sysroot
+c_stdlib_version:
+- '2.17'
 cdt_arch:
 - aarch64
 cdt_name:
@@ -40,6 +44,7 @@ zip_keys:
 - - c_compiler_version
   - cxx_compiler_version
   - fortran_compiler_version
+  - c_stdlib_version
   - cdt_name
   - cuda_compiler
   - cuda_compiler_version
diff --git a/.ci_support/linux_aarch64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeexternal.yaml b/.ci_support/linux_aarch64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeexternal.yaml
index afa5537..466fbf5 100644
--- a/.ci_support/linux_aarch64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeexternal.yaml
+++ b/.ci_support/linux_aarch64_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeexternal.yaml
@@ -4,6 +4,10 @@ c_compiler:
 - gcc
 c_compiler_version:
 - '11'
+c_stdlib:
+- sysroot
+c_stdlib_version:
+- '2.17'
 cdt_arch:
 - aarch64
 cdt_name:
@@ -40,6 +44,7 @@ zip_keys:
 - - c_compiler_version
   - cxx_compiler_version
   - fortran_compiler_version
+  - c_stdlib_version
   - cdt_name
   - cuda_compiler
   - cuda_compiler_version
diff --git a/.ci_support/linux_ppc64le_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeconda.yaml b/.ci_support/linux_ppc64le_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeconda.yaml
index f65a313..3cb758c 100644
--- a/.ci_support/linux_ppc64le_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeconda.yaml
+++ b/.ci_support/linux_ppc64le_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeconda.yaml
@@ -2,6 +2,10 @@ c_compiler:
 - gcc
 c_compiler_version:
 - '11'
+c_stdlib:
+- sysroot
+c_stdlib_version:
+- '2.17'
 cdt_name:
 - cos7
 channel_sources:
@@ -36,6 +40,7 @@ zip_keys:
 - - c_compiler_version
   - cxx_compiler_version
   - fortran_compiler_version
+  - c_stdlib_version
   - cdt_name
   - cuda_compiler
   - cuda_compiler_version
diff --git a/.ci_support/linux_ppc64le_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeexternal.yaml b/.ci_support/linux_ppc64le_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeexternal.yaml
index 877c3e8..936c7bd 100644
--- a/.ci_support/linux_ppc64le_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeexternal.yaml
+++ b/.ci_support/linux_ppc64le_c_compiler_version11cuda_compilernvcccuda_compiler_version11.8cxx_compiler_version11fortran_compiler_version11mpi_typeexternal.yaml
@@ -2,6 +2,10 @@ c_compiler:
 - gcc
 c_compiler_version:
 - '11'
+c_stdlib:
+- sysroot
+c_stdlib_version:
+- '2.17'
 cdt_name:
 - cos7
 channel_sources:
@@ -36,6 +40,7 @@ zip_keys:
 - - c_compiler_version
   - cxx_compiler_version
   - fortran_compiler_version
+  - c_stdlib_version
   - cdt_name
   - cuda_compiler
   - cuda_compiler_version
diff --git a/.ci_support/osx_64_.yaml b/.ci_support/osx_64_.yaml
index c7edccf..23bea35 100644
--- a/.ci_support/osx_64_.yaml
+++ b/.ci_support/osx_64_.yaml
@@ -4,6 +4,10 @@ c_compiler:
 - clang
 c_compiler_version:
 - '16'
+c_stdlib:
+- macosx_deployment_target
+c_stdlib_version:
+- '10.9'
 channel_sources:
 - conda-forge
 channel_targets:
diff --git a/.ci_support/osx_arm64_.yaml b/.ci_support/osx_arm64_.yaml
index 6a7d6c1..bcf82a3 100644
--- a/.ci_support/osx_arm64_.yaml
+++ b/.ci_support/osx_arm64_.yaml
@@ -4,6 +4,10 @@ c_compiler:
 - clang
 c_compiler_version:
 - '16'
+c_stdlib:
+- macosx_deployment_target
+c_stdlib_version:
+- '11.0'
 channel_sources:
 - conda-forge
 channel_targets:
diff --git a/.scripts/build_steps.sh b/.scripts/build_steps.sh
index 9121002..899ba03 100755
--- a/.scripts/build_steps.sh
+++ b/.scripts/build_steps.sh
@@ -68,7 +68,7 @@ if [[ "${BUILD_WITH_CONDA_DEBUG:-0}" == 1 ]]; then
     # Drop into an interactive shell
     /bin/bash
 else
-    conda build "${RECIPE_ROOT}" -m "${CI_SUPPORT}/${CONFIG}.yaml" \
+    conda-build "${RECIPE_ROOT}" -m "${CI_SUPPORT}/${CONFIG}.yaml" \
         --suppress-variables ${EXTRA_CB_OPTIONS:-} \
         --clobber-file "${CI_SUPPORT}/clobber_${CONFIG}.yaml" \
         --extra-meta flow_run_id="${flow_run_id:-}" remote_url="${remote_url:-}" sha="${sha:-}"
diff --git a/.scripts/run_osx_build.sh b/.scripts/run_osx_build.sh
index 16daa69..07dff21 100755
--- a/.scripts/run_osx_build.sh
+++ b/.scripts/run_osx_build.sh
@@ -81,7 +81,7 @@ else
         EXTRA_CB_OPTIONS="${EXTRA_CB_OPTIONS:-} --no-test"
     fi
 
-    conda build ./recipe -m ./.ci_support/${CONFIG}.yaml \
+    conda-build ./recipe -m ./.ci_support/${CONFIG}.yaml \
         --suppress-variables ${EXTRA_CB_OPTIONS:-} \
         --clobber-file ./.ci_support/clobber_${CONFIG}.yaml \
         --extra-meta flow_run_id="$flow_run_id" remote_url="$remote_url" sha="$sha"
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index cf45a7e..934c252 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -1,7 +1,7 @@
 {% set version = "5.0.2" %}
 {% set major = version.rpartition('.')[0] %}
 {% set cuda_major = (cuda_compiler_version|default("11.8")).rpartition('.')[0] %}
-{% set build = 0 %}
+{% set build = 1 %}
 
 # give conda package a higher build number
 {% if mpi_type == 'conda' %}
@@ -77,6 +77,8 @@ outputs:
         # so that conda-build knows to pass it to the test env
         - echo "{{ CONDA_BUILD_SYSROOT }}"  # [osx]
     requirements:
+      build:
+        - sysroot_{{ target_platform }} 2.17  # [linux]
       run:
         - {{ pin_subpackage('openmpi', exact=True) }}
         # host C compilers work fine (better) on mac
@@ -94,6 +96,8 @@ outputs:
         # so that conda-build knows to pass it to the test env
         - echo "{{ CONDA_BUILD_SYSROOT }}"  # [osx]
     requirements:
+      build:
+        - sysroot_{{ target_platform }} 2.17  # [linux]
       run:
         - {{ pin_subpackage('openmpi', exact=True) }}
         # host C compilers work fine (better) on mac
@@ -111,6 +115,8 @@ outputs:
         # so that conda-build knows to pass it to the test env
         - echo "{{ CONDA_BUILD_SYSROOT }}"  # [osx]
     requirements:
+      build:
+        - sysroot_{{ target_platform }} 2.17  # [linux]
       run:
         - {{ pin_subpackage('openmpi', exact=True) }}
         - {{ compiler('fortran') }}