Channel OVERRIDE_INTEL_IPO env. variable

Set variable in public CI to override using interprocedural optimization
in public CI to avoid insufficient resources failure during compilation
on Windows.

Author: oleksandr-pavlyk

.github/workflows/conda-package.yml

@@ -102,6 +102,8 @@ jobs:
         run: |
           echo "WHEELS_OUTPUT_FOLDER=$GITHUB_WORKSPACE${{ runner.os == 'Linux' && '/' || '\\' }}" >> $GITHUB_ENV
       - name: Build conda package
+        env:
+          OVERRIDE_INTEL_IPO: 1   # IPO requires more resources that GH actions VM provides
         run: conda build --no-test --python ${{ matrix.python }} -c intel -c conda-forge --override-channels conda-recipe
       - name: Upload artifact
         uses: actions/upload-artifact@v3

conda-recipe/bld.bat

@@ -6,6 +6,11 @@ set "INCLUDE=%BUILD_PREFIX%\include;%INCLUDE%"
 "%PYTHON%" setup.py clean --all
 set "SKBUILD_ARGS=-G Ninja -- -DCMAKE_C_COMPILER:PATH=icx -DCMAKE_CXX_COMPILER:PATH=icx -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON"
 
+REM Overriding IPO is useful for building in resources constrained VMs (public CI)
+if DEFINED OVERRIDE_INTEL_IPO (
+   set "SKBUILD_ARGS=%SKBUILD_ARGS% -DCMAKE_INTERPROCEDURAL_OPTIMIZATION:BOOL=FALSE"
+)
+
 FOR %%V IN (14.0.0 14 15.0.0 15 16.0.0 16 17.0.0 17) DO @(
   REM set DIR_HINT if directory exists
   IF EXIST "%BUILD_PREFIX%\Library\lib\clang\%%V\" (

conda-recipe/meta.yaml

@@ -9,6 +9,7 @@ build:
     number: {{ GIT_DESCRIBE_NUMBER }}
     script_env:
         - WHEELS_OUTPUT_FOLDER
+        - OVERRIDE_INTEL_IPO  # [win]
 
 requirements:
     build: