checkin a new formula for the freecad 0.20.1 release

Closes #365.

Signed-off-by: Chris <chris.r.jones.1983@gmail.com>

Formula/freecad@0.20.1.rb

@@ -0,0 +1,167 @@
+class FreecadAT0201 < Formula
+  desc "Parametric 3D modeler"
+  homepage "https://www.freecadweb.org"
+  license "GPL-2.0-only"
+  head "https://github.com/freecad/FreeCAD.git", branch: "master", shallow: false
+
+  stable do
+    url "https://github.com/FreeCAD/FreeCAD/archive/refs/tags/0.20.1.tar.gz"
+    sha256 "70c15f7c1c676e3376cdc2a66c136030c5502f9802935e5b626ca8ce3f8812ed"
+  end
+
+  option "with-macos-app", "Create FreeCAD.app bundle"
+  option "with-cloud", "Build with CLOUD module"
+  option "with-unsecured-cloud", "Build with self signed certificate support CLOUD module"
+
+  depends_on "cmake" => :build
+  depends_on "hdf5" => :build
+  depends_on "pkg-config" => :build
+  depends_on "swig" => :build
+  depends_on "tbb" => :build
+  depends_on "boost"
+  depends_on "boost-python3"
+  depends_on "coin3d"
+  depends_on "cython"
+  depends_on "doxygen"
+  depends_on "freecad/freecad/med-file"
+  depends_on "freecad/freecad/pyside2@5.15.5"
+  depends_on "freecad/freecad/shiboken2@5.15.5"
+  depends_on "freetype"
+  depends_on "icu4c"
+  # epends_on "freecad/freecad/nglib@6.2.2105"
+  depends_on "llvm"
+  depends_on macos: :high_sierra # no access to sierra test box
+  depends_on "openblas"
+  depends_on "opencascade"
+  depends_on "orocos-kdl"
+  depends_on "pkg-config"
+  depends_on "python@3.10"
+  depends_on "qt@5"
+  depends_on "vtk"
+  depends_on "webp"
+  depends_on "xerces-c"
+
+  # NOTE: `brew update-python-resources` check for outdated py resources
+  resource "matplotlib" do
+    url "https://files.pythonhosted.org/packages/8a/46/425a44ab9a71afd2f2c8a78b039c1af8ec21e370047f0ad6e43ca819788e/matplotlib-3.5.1.tar.gz"
+    sha256 "b2e9810e09c3a47b73ce9cab5a72243a1258f61e7900969097a817232246ce1c"
+  end
+
+  resource "PyYAML" do
+    url "https://files.pythonhosted.org/packages/36/2b/61d51a2c4f25ef062ae3f74576b01638bebad5e045f747ff12643df63844/PyYAML-6.0.tar.gz"
+    sha256 "68fb519c14306fec9720a2a5b45bc9f0c8d1b9c72adf45c37baedfcd949c35a2"
+  end
+
+  # NOTE: https://docs.brew.sh/Formula-Cookbook#handling-different-system-configurations
+  # patch for mojave with 10.15 SDK
+  patch :p1 do
+    url "https://raw.githubusercontent.com/FreeCAD/homebrew-freecad/a4b71def99b5fe907550729038752aaf6fa1b9bf/patches/freecad-0.20.1-macos-10.15-sdk.patch"
+    sha256 "ce9f4b2afb2c621274e74208a563616eeeee54369f295b6c5f6f4f3112923135"
+  end
+
+  # fix for mac app bundling
+  patch :p1 do
+    url "https://raw.githubusercontent.com/FreeCAD/homebrew-freecad/a4b71def99b5fe907550729038752aaf6fa1b9bf/patches/freecad-0.20.1-macos-app-bundling.patch"
+    sha256 "4be359518fcdebb8eedfa5417bf20d3f935ad1b89eb291a26bf16096795fb21b"
+  end
+
+  def python3
+    deps.map(&:to_formula)
+        .find { |f| f.name.match?(/^python@\d\.\d+$/) }
+        .opt_bin/"python3"
+  end
+
+  def install
+    # NOTE: ordered loosely by cmake checks
+    hbp = HOMEBREW_PREFIX
+    pth_xercesc = Formula["xerces-c"].opt_prefix
+    pth_occ = Formula["opencascade"].opt_prefix
+    pth_hdf5 = Formula["hdf5"].opt_prefix
+    pth_coin = Formula["coin3d"].opt_prefix
+    pth_pyside2 = "#{Formula["#{@tap}/pyside2@5.15.5"].prefix}/lib/cmake/PySide2-5.15.5"
+    pth_qt5 = Formula["qt@5"].opt_prefix
+    pth_vtk = Formula["vtk"].opt_prefix
+    pth_med = Formula["freecad/freecad/med-file"].opt_prefix
+
+    cmake_prefix_paths = "\""
+    cmake_prefix_paths << "#{pth_xercesc};"
+    cmake_prefix_paths << "#{pth_occ};"
+    cmake_prefix_paths << "#{pth_hdf5};"
+    cmake_prefix_paths << "#{pth_coin};"
+    cmake_prefix_paths << "#{pth_qt5};"
+    cmake_prefix_paths << "#{pth_vtk};"
+    cmake_prefix_paths << "#{pth_pyside2};"
+    cmake_prefix_paths << "#{pth_med};"
+    cmake_prefix_paths << "\""
+
+    args = std_cmake_args + %W[
+      -DHOMEBREW_PREFIX=#{hbp}
+      -DPYTHON_EXECUTABLE=#{hbp}/bin/python3
+      -DPYTHON_INCLUDE_DIR=#{hbp}/opt/python@3.10/Frameworks/Python.framework/Headers
+      -DPYTHON_LIBRARY=#{hbp}/opt/python@3.10/Frameworks/Python.framework/Versions/Current/lib/libpython3.10.dylib
+      -DBUILD_SMESH=1
+      -DBUILD_QT5=1
+      -DFREECAD_USE_EXTERNAL_KDL=1
+      -DBUILD_FEM_NETGEN=0
+      -DBUILD_ENABLE_CXX_STD=C++17
+      -DCMAKE_PREFIX_PATH=#{cmake_prefix_paths}
+    ]
+    # NOTE: below two args useful for debugging
+    # --trace
+    # -L
+
+    args << if build.with? "macos-app"
+      "-DFREECAD_CREATE_MAC_APP=1"
+    else
+      "-DFREECAD_CREATE_MAC_APP=0"
+      # bin.install_symlink "../MacOS/FreeCAD" => "FreeCAD"
+      # bin.install_symlink "../MacOS/FreeCADCmd" => "FreeCADCmd"
+      # (lib/"python3.10/site-packages/homebrew-freecad-bundle.pth").write "#{prefix}/MacOS/\n"
+    end
+
+    args << "-DBUILD_CLOUD=1" if build.with? "cloud"
+    args << "-DALLOW_SELF_SIGNED_CERTIFICATE=1" if build.with? "unsecured-cloud"
+
+    ENV.prepend_path "PATH", Formula["shiboken2@5.15.5"].prefix/"bin"
+    ENV.prepend_path "PATH", Formula["python@3.10"].opt_prefix/"bin"
+
+    ENV.remove "PATH", Formula["pyside@2"].opt_prefix/"bin"
+    # ENV.remove "PATH", Formula["python@3.9"].opt_prefix/"bin"
+
+    # for reasons i dont understand pyside@2 is sneaking into the cmake_prefix_path
+    ENV.remove "CMAKE_PREFIX_PATH", Formula["pyside@2"].prefix
+    ENV.remove "PKG_CONFIG_PATH", Formula["pyside@2"].opt_prefix/"lib/pkgconfig"
+
+    # NOTE: ipatch, required for successful build
+    ENV.prepend_path "PYTHONPATH", Formula["shiboken2@5.15.5"].opt_prefix/Language::Python.site_packages(python3)
+    ENV.prepend_path "PYTHONPATH", Formula["pyside2@5.15.5"].opt_prefix/Language::Python.site_packages(python3)
+
+    # TODO: ipatch, do not make build dir a sub dir of the src dir
+    mkdir "Build" do
+      system "cmake", *args, ".."
+      system "make", "install"
+    end
+  end
+
+  def caveats
+    <<-EOS
+    After installing FreeCAD you may want to do the following:
+
+    1. Amend your PYTHONPATH environmental variable to point to
+       the FreeCAD directory
+         export PYTHONPATH=#{bin}:$PYTHONPATH
+
+    2. Due to recent code signing updates with Catalina and newer
+       building a FreeCAD.app bundle using the existing python
+       script no longer works due to updating the rpaths of the
+       copied executables and libraries into a FreeCAD.app
+       bundle. Until a fix or work around is made freecad
+       is built for CLI by default now.
+    EOS
+  end
+
+  test do
+    # NOTE: make test more robust and accurate
+    system "true"
+  end
+end