Version 0.1.0 (setup)

Version 0.1.0

Context

This MR setups the project and provides the basic code architecture, as well as test cases.
Two things remain to be done to have a minimal working release:

1. implement the computation of the aerodynamic influence coefficients
2. implement the import of the nonlinear solution and its interpolation on the Cartesian grid

Tests

Passed on ubuntu20.04 (python 3.8.2) and msys2 (python 3.8.1). Note: timers test might fail on msys

CMake/FindEIGEN.cmake

+# Copyright 2020 University of Liège
+# 
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# FindEIGEN.cmake - try to find Eigen 3 headers
+# The logic that checks the version comes from FindEigen3.cmake (source dir)
+# ----------------------------------------------------------------------------   
+# output:
+#    EIGEN_FOUND             : TRUE/FALSE
+#    EIGEN_INCLUDE_DIRS      : where the Eigen/*.h are              [cached]
+#    EIGEN_VERSION           : version number of Eigen
+# ----------------------------------------------------------------------------
+# autodetection:
+#    utiliser "CMAKE_PREFIX_PATH=c:\local"
+#          ou "CMAKE_INCLUDE_PATH=c:\local\include"
+#          ou "INCLUDE=c:\local\include"
+# ----------------------------------------------------------------------------   
+
+# Check version (only for Eigen 3)
+macro(_eigen3_check_version)
+    file(READ "${EIGEN_INCLUDE_DIRS}/Eigen/src/Core/util/Macros.h" _eigen3_version_header)
+
+    string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen3_world_version_match "${_eigen3_version_header}")
+    set(EIGEN_WORLD_VERSION "${CMAKE_MATCH_1}")
+    string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen3_major_version_match "${_eigen3_version_header}")
+    set(EIGEN_MAJOR_VERSION "${CMAKE_MATCH_1}")
+    string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen3_minor_version_match "${_eigen3_version_header}")
+    set(EIGEN_MINOR_VERSION "${CMAKE_MATCH_1}")
+
+    set(EIGEN_VERSION ${EIGEN_WORLD_VERSION}.${EIGEN_MAJOR_VERSION}.${EIGEN_MINOR_VERSION})
+
+    if(${EIGEN_VERSION} VERSION_LESS ${EIGEN_FIND_VERSION})
+        message(FATAL_ERROR "Eigen version ${EIGEN_VERSION} found in ${EIGEN_INCLUDE_DIRS}, but at least version ${EIGEN_FIND_VERSION} is required!")
+    endif()
+endmacro()
+
+# Set a dummy version if not provided
+if(NOT EIGEN_FIND_VERSION)
+    if(NOT EIGEN_FIND_VERSION_MAJOR)
+        set(EIGEN_FIND_VERSION_MAJOR 3)
+    endif()
+    if(NOT EIGEN_FIND_VERSION_MINOR)
+        set(EIGEN_FIND_VERSION_MINOR 3)
+    endif()
+    if(NOT EIGEN_FIND_VERSION_PATCH)
+        set(EIGEN_FIND_VERSION_PATCH 4)
+    endif()
+
+    set(EIGEN_FIND_VERSION "${EIGEN_FIND_VERSION_MAJOR}.${EIGEN_FIND_VERSION_MINOR}.${EIGEN_FIND_VERSION_PATCH}")
+endif()
+
+# Find the header and check the version
+find_path(EIGEN_INCLUDE_DIRS "Eigen/Dense" PATHS "/usr/include/eigen3")
+if (EIGEN_INCLUDE_DIRS)
+    _eigen3_check_version()
+else()
+    message(FATAL_ERROR "Eigen3 headers not found! Define the path in the INCLUDE environment variable.")
+endif()
+
+# handle the QUIETLY and REQUIRED arguments and set EIGEN_FOUND to TRUE
+# if all listed variables are TRUE
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(EIGEN
+                                  FOUND_VAR EIGEN_FOUND
+                                  REQUIRED_VARS EIGEN_INCLUDE_DIRS
+                                  VERSION_VAR EIGEN_VERSION)
+
+#MESSAGE(STATUS "EIGEN_FOUND = ${EIGEN_FOUND}")