cmake(python): Add pybind11 dependency

CMakeLists.txt

@@ -225,6 +225,9 @@ if(BUILD_JAVA)
 endif()
 
 if(BUILD_PYTHON)
+  option(BUILD_pybind11 "Build pybind11 library" ON)
+  message(STATUS "Build pybind11: ${BUILD_pybind11}")
+
   option(FETCH_PYTHON_DEPS "Install python required modules if not available" ${BUILD_DEPS})
   message(STATUS "Python fetch dependencies: ${FETCH_PYTHON_DEPS}")
 endif()

cmake/dependencies/CMakeLists.txt

@@ -144,6 +144,25 @@ if(BUILD_Eigen3)
   message(CHECK_PASS "fetched")
 endif()
 
+# ##############################################################################
+# pybind11
+# ##############################################################################
+if(BUILD_pybind11)
+  message(CHECK_START "Fetching pybind11")
+  list(APPEND CMAKE_MESSAGE_INDENT "  ")
+  set(PYBIND11_INSTALL ON)
+  set(PYBIND11_TEST OFF)
+  FetchContent_Declare(
+    pybind11
+    GIT_REPOSITORY "https://github.com/pybind/pybind11.git"
+    GIT_TAG "v2.9.1"
+    #PATCH_COMMAND git apply --ignore-whitespace "${CMAKE_CURRENT_LIST_DIR}/../../patches/pybind11-2.9.1.patch"
+  )
+  FetchContent_MakeAvailable(pybind11)
+  list(POP_BACK CMAKE_MESSAGE_INDENT)
+  message(CHECK_PASS "fetched")
+endif()
+
 # ##############################################################################
 # SCIP
 # ##############################################################################

cmake/deps.cmake

@@ -118,3 +118,11 @@ endif()
 if(USE_XPRESS)
   find_package(XPRESS REQUIRED)
 endif()
+
+# Check language Dependencies
+if(BUILD_PYTHON)
+  if(NOT BUILD_pybind11)
+    find_package(pybind11 REQUIRED)
+  endif()
+endif()
+