Add 'occt' package (#295)

* Add 'occt' package

* fix include order.

* Build shared libs by default

* dummy commit to occt...

* try to install additional dependency for linux...

* try with sudo...

* try to source it...

* debug...

* debug2

* debug...

* debug...

* debug2

* debug3

* add osx

* add another package...

* bugfix

* add more packages...

* try freetype on osx...

* build static libs by default...

* fix sha

* enable osx again

* use an older version of osx pipeline...

* remove extra comma

* enable everything...

* windows debug...

* use latest patched occt

* fix example for windows...

* fix.

* dummy commit to trigger ci

* only release ci build on windows

* fix

* use latest patched occt

* build windows ci unconditionally.

* dummy edit to trigger build.

* fix windows build of example by linking with ws2_32

* use cpp-pm repository.

* remove build matrix

* address change request

cmake/configs/default.cmake

@@ -391,6 +391,7 @@ hunter_default_version(nlohmann_fifo_map VERSION 0.0.0-0dfbf5d-p1)
 hunter_default_version(nlohmann_json VERSION 3.8.0)
 hunter_default_version(nng VERSION 1.1.1)
 hunter_default_version(nsync VERSION 1.14-p1)
+hunter_default_version(occt VERSION 7.4.0-p0)
 hunter_default_version(odb VERSION 2.4.0)
 hunter_default_version(odb-boost VERSION 2.4.0)
 hunter_default_version(odb-compiler VERSION 2.4.0)

cmake/projects/occt/ci/build.sh

@@ -0,0 +1,20 @@
+# Install additional dependencies:
+
+if [ "$(uname)" == "Darwin" ]; then
+    # OSX    
+    :
+elif [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
+    # GNU/Linux
+    sudo apt-get update
+    sudo apt-get install mesa-common-dev libgl1-mesa-dev libxmu-dev libxi-dev
+elif [ "$(expr substr $(uname -s) 1 10)" == "MINGW32_NT" ]; then
+    # Windows x32
+    :
+elif [ "$(expr substr $(uname -s) 1 10)" == "MINGW64_NT" ]; then
+    # Windows x64
+    :
+fi
+
+
+# Run normal build script: 
+source ./.github/workflows/ci/build.sh

cmake/projects/occt/hunter.cmake

@@ -0,0 +1,33 @@
+# Copyright (c) 2016-2020, Rahul Sheth, Ruslan Baratov
+# All rights reserved.
+
+# !!! DO NOT PLACE HEADER GUARDS HERE !!!
+
+include(hunter_add_version)
+include(hunter_cacheable)
+include(hunter_download)
+include(hunter_pick_scheme)
+include(hunter_cmake_args)
+
+hunter_add_version(
+    PACKAGE_NAME
+    occt
+    VERSION
+    7.4.0-p0
+    URL
+    "https://github.com/cpp-pm/OCCT/archive/v7.4.0-p0.tar.gz"
+    SHA1
+    537bb3eeaff198b1733e49e857c19429bf2f7781
+)
+
+hunter_cmake_args(
+  occt
+  CMAKE_ARGS
+    BUILD_MODULE_Draw=Off
+    BUILD_DOC_Overview=Off
+)
+
+
+hunter_pick_scheme(DEFAULT url_sha1_cmake)
+hunter_cacheable(occt)
+hunter_download(PACKAGE_NAME occt)

docs/packages/pkg/occt.rst

@@ -0,0 +1,31 @@
+.. spelling::
+
+    occt
+
+.. index::
+  single: math ; occt
+
+.. _pkg.occt:
+
+occt
+====
+OpenCascade Community Technology
+
+-  `Official <https://dev.opencascade.org/>`__
+-  `Hunterized <https://github.com/cpp-pm/occt>`__
+-  `Example <https://github.com/cpp-pm/hunter/blob/master/examples/occt/CMakeLists.txt>`__
+-  Added by `craffael <https://github.com/craffael>`__ (`pr-295 <https://github.com/cpp-pm/hunter/pull/295>`__)
+
+.. literalinclude:: /../examples/occt/CMakeLists.txt
+  :language: cmake
+  :start-after: # DOCUMENTATION_START {
+  :end-before: # DOCUMENTATION_END }
+
+.. note::
+
+  * OpenCascade consists of a number of modules. This Hunterized version supports all modules except
+    the `Draw Test Harness <https://www.opencascade.com/doc/occt-7.4.0/overview/html/technical_overview.html#OCCT_TOVW_SECTION_8>`__.
+  * To build shared versions of occt (recommended), please use :ref:`HUNTER_BUILD_SHARED_LIBS=ON <hunter build shared libs>` 
+    or build with :ref:`toolchain with PIC <simple toolchains>`.
+  * On Ubuntu, make sure that you have installed the following system packages: :code:`mesa-common-dev`, :code:`libgl1-mesa-dev`, :code:`libxmu-dev`, :code:`libxi-dev`
+

examples/occt/CMakeLists.txt

@@ -0,0 +1,23 @@
+# Copyright (c) 2016-2020, Rahul Sheth, Ruslan Baratov
+# All rights reserved.
+
+cmake_minimum_required(VERSION 3.2)
+
+# Emulate HunterGate:
+# * https://github.com/hunter-packages/gate
+include("../common.cmake")
+
+project(download-occt)
+
+# DOCUMENTATION_START {
+hunter_add_package(occt)
+find_package(OpenCASCADE CONFIG REQUIRED)
+
+add_executable(boo boo.cpp)
+target_link_libraries(boo occt::TKFillet  occt::TKOffset occt::TKBool  occt::TKBO occt::TKShHealing  occt::TKPrim occt::TKTopAlgo occt::TKBRep occt::TKGeomAlgo occt::TKGeomBase occt::TKG3d occt::TKG2d occt::TKMath occt::TKernel)
+if(APPLE OR (UNIX AND NOT ANDROID))
+  target_link_libraries(boo pthread)
+elseif(WIN32)
+  target_link_libraries(boo ws2_32)
+endif()
+# DOCUMENTATION_END }

examples/occt/boo.cpp

@@ -0,0 +1,16 @@
+#include <GC_MakeSegment.hxx>
+#include <gp_Pnt.hxx>
+#include <Standard_Failure.hxx>
+
+int main() {
+  try {
+    gp_Pnt a(0, 0, 0);
+    gp_Pnt b(1, 0, 0);
+
+    Handle(Geom_TrimmedCurve) edge = GC_MakeSegment(a, b);
+  }
+  catch (const Standard_Failure& e) {
+    std::cout << e.GetMessageString() << std::endl;
+    return 1;
+  }
+}