Bld: with non conda forge compilers for MacOS

.github/workflows/wheels.yml

@@ -55,7 +55,7 @@ jobs:
         - [ubuntu-24.04, musllinux, x86_64, "", ""]
         - [ubuntu-24.04-arm, manylinux, aarch64, "", ""]
         - [ubuntu-24.04-arm, musllinux, aarch64, "", ""]
-        - [macos-13, macosx, x86_64, openblas, "10.14"]
+        - [macos-15-intel, macosx, x86_64, openblas, "10.15"]
         - [macos-15-intel, macosx, x86_64, accelerate, "14.0"]
         - [macos-14, macosx, arm64, openblas, "12.3"]
         - [macos-14, macosx, arm64, accelerate, "14.0"]
@@ -146,41 +146,24 @@ jobs:
         run: |
           if [[ ${{ matrix.buildplat[3] }} == 'accelerate' ]]; then
             echo CIBW_CONFIG_SETTINGS=\"setup-args=-Dblas=accelerate\" >> "$GITHUB_ENV"
-  
+
             # use preinstalled gfortran for Accelerate builds
             ln -s $(which gfortran-13) gfortran
             export PATH=$PWD:$PATH
             echo "PATH=$PATH" >> "$GITHUB_ENV"
-          
+
             # Builds with Accelerate only target macOS>=14.0
             CIBW_ENV="CIBW_ENVIRONMENT_MACOS=MACOSX_DEPLOYMENT_TARGET=14.0 INSTALL_OPENBLAS=false"
           else
-            # use conda-forge compilers the difficult targets
-            INSTALL_DIR=/Users/runner/miniforge3
-
-            wget -q -O Miniforge3.sh "https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-$(uname)-$(uname -m).sh"
-
-            # Make the installer executable
-            chmod +x Miniforge3.sh
-
-            # Run the installer in batch mode (-b) and specify the installation prefix (-p)
-            # The -u flag is for updating an existing installation if it exists
-            ./Miniforge3.sh -b -u -p "${INSTALL_DIR}"
-
-            source "${INSTALL_DIR}/etc/profile.d/conda.sh"
-            conda init
-            conda create -q -y -n build compilers
-            echo "conda activate build" >> $HOME/.bash_profile
-            cat $HOME/.bash_profile
-
             CIBW_ENV="CIBW_ENVIRONMENT_MACOS=PKG_CONFIG_PATH=$PWD/.openblas \
-            MACOSX_DEPLOYMENT_TARGET=${{ matrix.buildplat[4] }}"
+              MACOSX_DEPLOYMENT_TARGET=${{ matrix.buildplat[4] }} \
+              SDKROOT=$(xcrun --sdk macosx --show-sdk-path)"
           fi
-          echo "$CIBW_ENV" >> $GITHUB_ENV
+          echo "$CIBW_ENV" >> "$GITHUB_ENV"
 
           PREFIX=DYLD_LIBRARY_PATH="\$(dirname \$(gfortran --print-file-name libgfortran.dylib))"
           CIBW="$PREFIX delocate-wheel -v $EXCLUDE --require-archs {delocate_archs} -w {dest_dir} {wheel}"
-          echo "CIBW_REPAIR_WHEEL_COMMAND_MACOS=$CIBW" >> $GITHUB_ENV
+          echo "CIBW_REPAIR_WHEEL_COMMAND_MACOS=$CIBW" >> "$GITHUB_ENV"
 
       - name: Build Wheels
         shell: bash -el {0}

tools/wheels/cibw_before_build.sh

@@ -47,6 +47,10 @@ if [[ "$INSTALL_OPENBLAS" = "true" ]] ; then
     python -c "import scipy_${OPENBLAS}; print(scipy_${OPENBLAS}.get_pkg_config())" > $pkgconf_path/scipy-openblas.pc
 
     if [[ $RUNNER_OS == "macOS" ]]; then
+      # For scipy_openblas we need the older fortran compilers that were used to
+      # build it, homebrew's are too modern.
+      source $PROJECT_DIR/tools/wheels/gfortran_macos.sh
+
       lib_loc=$(python -c"import scipy_openblas32; print(scipy_openblas32.get_lib_dir())")
       # Use the libgfortran from gfortran rather than the one in the wheel
       # since delocate gets confused if there is more than one

tools/wheels/gfortran_macos.sh

@@ -0,0 +1,55 @@
+set -xe
+PLATFORM=$(uname -m)
+echo $PLATFORM
+
+#########################################################################################
+# Install GFortran + OpenBLAS
+
+if [[ $PLATFORM == "x86_64" ]]; then
+  #GFORTRAN=$(type -p gfortran-9)
+  #sudo ln -s $GFORTRAN /usr/local/bin/gfortran
+  # same version of gfortran as the openblas-libs
+  # https://github.com/MacPython/gfortran-install.git
+  curl -L https://github.com/isuruf/gcc/releases/download/gcc-11.3.0-2/gfortran-darwin-x86_64-native.tar.gz -o gfortran.tar.gz
+
+  GFORTRAN_SHA256=$(shasum -a 256 gfortran.tar.gz)
+  KNOWN_SHA256="981367dd0ad4335613e91bbee453d60b6669f5d7e976d18c7bdb7f1966f26ae4  gfortran.tar.gz"
+  if [ "$GFORTRAN_SHA256" != "$KNOWN_SHA256" ]; then
+      echo sha256 mismatch
+      exit 1
+  fi
+
+  sudo mkdir -p /opt/
+  # places gfortran in /opt/gfortran-darwin-x86_64-native. There's then
+  # bin, lib, include, libexec underneath that.
+  sudo tar -xv -C /opt -f gfortran.tar.gz
+
+  # Link these into /usr/local so that there's no need to add rpath or -L
+  for f in libgfortran.dylib libgfortran.5.dylib libgcc_s.1.dylib libgcc_s.1.1.dylib libquadmath.dylib libquadmath.0.dylib; do
+    ln -sf /opt/gfortran-darwin-x86_64-native/lib/$f /usr/local/lib/$f
+  done
+  ln -sf /opt/gfortran-darwin-x86_64-native/bin/gfortran /usr/local/bin/gfortran
+
+  # Set SDKROOT env variable if not set
+  # This step is required whenever the gfortran compilers sourced from
+  # conda-forge (built by isuru fernando) are used outside of a conda-forge
+  # environment (so it mirrors what is done in the conda-forge compiler
+  # activation scripts)
+  export SDKROOT=${SDKROOT:-$(xcrun --show-sdk-path)}
+fi
+
+
+if [[ $PLATFORM == "arm64" ]]; then
+  curl -L https://github.com/fxcoudert/gfortran-for-macOS/releases/download/12.1-monterey/gfortran-ARM-12.1-Monterey.dmg -o gfortran.dmg
+  GFORTRAN_SHA256=$(shasum -a 256 gfortran.dmg)
+  KNOWN_SHA256="e2e32f491303a00092921baebac7ffb7ae98de4ca82ebbe9e6a866dd8501acdf  gfortran.dmg"
+
+  if [ "$GFORTRAN_SHA256" != "$KNOWN_SHA256" ]; then
+      echo sha256 mismatch
+      exit 1
+  fi
+
+  hdiutil attach -mountpoint /Volumes/gfortran gfortran.dmg
+  sudo installer -pkg /Volumes/gfortran/gfortran.pkg -target /
+  type -p gfortran
+fi