1 cmake_minimum_required(VERSION 3.13.0)
2 # If you are using this repository as a template, you should probably change the
3 # project name and adopt your own versioning scheme.
4 project(sample_restraint VERSION 0.0.8)
6 find_package(PythonInterp)
8 # Check if Python package is being built directly or via add_subdirectory.
9 # I.e. is this being built as a standalone project or as part of the GROMACS
10 # build tree (for testing)?
11 set(GMXAPI_EXTENSION_MASTER_PROJECT OFF)
12 if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
13 set(GMXAPI_EXTENSION_MASTER_PROJECT ON)
16 # TODO: (Issue #3027) Handle pybind sources both for forked projects and
17 # for GROMACS-project-internal testing.
18 # Projects based on this subtree should bundle pybind11 sources.
19 # The GROMACS project already bundles one copy of pybind sources for the gmxapi
20 # Python package, and should package them with source distribution archives of
21 # the paackage that should be installed with GROMACS, but the pybind sources
22 # would only be available to this project with some additional management by
23 # the parent project CMake configuration.
24 # Also reference https://gitlab.com/gromacs/gromacs/-/issues/2896
25 if(GMXAPI_EXTENSION_MASTER_PROJECT)
26 # TODO: (Issue #3027) Handle locally available sources.
27 set(GMXAPI_EXTENSION_USE_BUNDLED_PYBIND OFF CACHE BOOL
28 "Use pybind11 headers bundled with this repository. If OFF, CMake does `find_package(pybind11)`.")
29 if(GMXAPI_EXTENSION_USE_BUNDLED_PYBIND)
30 add_subdirectory(external/pybind)
32 option(GMXAPI_EXTENSION_DOWNLOAD_PYBIND ON)
33 if(GMXAPI_EXTENSION_DOWNLOAD_PYBIND)
34 configure_file(CMakeLists.pybind.in pybind-download/CMakeLists.txt)
35 execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
36 RESULT_VARIABLE result
37 WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/pybind-download)
39 message(FATAL_ERROR "CMake step for pybind download failed: ${result}")
41 execute_process(COMMAND ${CMAKE_COMMAND} --build .
42 RESULT_VARIABLE result
43 WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/pybind-download)
45 message(FATAL_ERROR "Build step for pybind failed: ${result}")
47 add_subdirectory(${CMAKE_CURRENT_BINARY_DIR}/pybind-src)
49 find_package(pybind11 2.2 REQUIRED)
53 # If configuring as part of the GROMACS project, pybind11 2.2 has already been found.
57 # This project requires a GROMACS supporting gmxapi 0.0.8 or higher. It should
58 # be sufficient to source the GMXRC, but you can also set the GROMACS_DIR or
59 # gmxapi_DIR environment variable to help CMake find the GROMACS installation.
61 # Note that the code will need to be built separately for different versions of Python and for substantially different
62 # versions of GROMACS. If building from the command line, you can specify a Python executable with the PYTHON_EXECUTABLE
63 # variable. For instance, to make sure you are building for your default Python, cmake -DPYTHON_EXECUTABLE=`which python`.
65 set(CMAKE_CXX_STANDARD 17)
66 set(CMAKE_CXX_VISIBILITY_PRESET hidden)
68 # CMake modules are in a subdirectory to keep this file cleaner
69 list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
71 # Assuming GROMACS is in our path or that we have set either the gmxapi_DIR or GROMACS_DIR environment variables,
72 # this will find the CMake configuration for the GROMACS libraries we need and define the CMake library objects
74 if(GMXAPI_EXTENSION_MASTER_PROJECT)
77 PATHS "$ENV{GROMACS_DIR}"
80 message(STATUS "Found gmxapi version ${gmxapi_VERSION_MAJOR}.${gmxapi_VERSION_MINOR}.${gmxapi_VERSION_PATCH}")
83 if(GMXAPI_EXTENSION_MASTER_PROJECT)
84 ######################################################
85 # The following is boiler-plate recommended by GROMACS
86 ######################################################
87 # In principle, this could be deduced from GROMACS_IS_DOUBLE returned by
88 # find_package(GROMACS) based on the suffix alone, but it is clearer that the
89 # user explicitly sets what they want to get, and then need to provide a suffix
91 option(GMX_DOUBLE "Use double precision" OFF)
92 set(GMX_SUFFIX "" CACHE STRING "Suffix for the GROMACS installation to use (empty for default)")
94 # This does not allow for a non-suffixed double-precision libgromacs, but
95 # that should be rare enough for demonstration purposes.
96 if (GMX_DOUBLE AND NOT GMX_SUFFIX)
97 set(GROMACS_SUFFIX "_d")
99 set(GROMACS_SUFFIX ${GMX_SUFFIX})
102 find_package(GROMACS REQUIRED)
103 gromacs_check_double(GMX_DOUBLE)
104 gromacs_check_compiler(CXX)
105 include_directories(${GROMACS_INCLUDE_DIRS})
106 add_definitions(${GROMACS_DEFINITIONS})
108 # Use static linking on MSVC
109 if (CMAKE_GENERATOR MATCHES "Visual Studio")
110 string(REPLACE /MD /MT CMAKE_C_FLAGS_RELEASE ${CMAKE_C_FLAGS_RELEASE})
111 set(CMAKE_C_FLAGS_RELEASE ${CMAKE_C_FLAGS_RELEASE} CACHE STRING "" FORCE)
112 string(REPLACE /MD /MT CMAKE_C_FLAGS_DEBUG ${CMAKE_C_FLAGS_DEBUG})
113 set(CMAKE_C_FLAGS_DEBUG ${CMAKE_C_FLAGS_DEBUG} CACHE STRING "" FORCE)
116 # Activate the CTest module for this directory.
120 ########################################################
122 # Stuff for our plugin:
124 # If the user is not in a virtual environment and is not a privileged user and has not specified an install location
125 # for the Python module (GMXPLUGIN_INSTALL_PATH), this option causes the automatic install location to query the user
126 # site-packages directory instead of using the default site-packages directory for the interpreter.
127 option(GMXPLUGIN_USER_INSTALL
128 "Override the default site-packages directory with the user-specific Python packages directory. \
129 (Do not use with virtual environments.) \
130 Has no effect if GMXPLUGIN_INSTALL_PATH is defined or cached. \
131 Use -UGMXPLUGIN_INSTALL_PATH to force recalculation."
134 # Since a user may have multiple virtual environments with different Python interpreters, it is generally confusing to
135 # have a package for a virtual environment installed in the user's default user site-packages directory. If virtual
136 # environments are in use at all, we recommend you do _not_ perform a "user" install in or out of a virtual env. If you do
137 # not use any Python virtual environments, we recommend you _do_ perform "user" installs exclusively. Overall, we
138 # we recommend you use Python virtual environments and activate one before performing a regular (non-"user") install.
140 if (PYTHONINTERP_FOUND)
141 message(STATUS "Found Python interpreter: ${PYTHON_EXECUTABLE}")
142 if (PYTHON_LIBRARIES)
143 if (GMXPLUGIN_USER_INSTALL)
144 execute_process(COMMAND ${PYTHON_EXECUTABLE} "-m" "site" "--user-site"
145 OUTPUT_VARIABLE GMXPLUGIN_DEFAULT_SITE_PACKAGES
146 OUTPUT_STRIP_TRAILING_WHITESPACE)
147 message(STATUS "Python user site-packages directory is ${GMXPLUGIN_DEFAULT_SITE_PACKAGES}")
149 execute_process(COMMAND ${PYTHON_EXECUTABLE} -c
150 "import sys; import os; \
151 print(os.path.abspath(os.path.join(sys.prefix, \
153 'python${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}', \
155 OUTPUT_VARIABLE GMXPLUGIN_DEFAULT_SITE_PACKAGES
156 OUTPUT_STRIP_TRAILING_WHITESPACE)
157 message(STATUS "Python site-packages directory is ${GMXPLUGIN_DEFAULT_SITE_PACKAGES}")
161 "Found Python interpreter ${PYTHON_EXECUTABLE} but this Python installation does not have developer tools."
162 "Set PYTHON_EXECUTABLE to the Python interpreter that was installed with a working Python.h header file.")
165 message(FATAL_ERROR "Could not find Python interpreter. Set CMake flag -DPYTHON_EXECUTABLE=/path/to/python to hint.")
168 # At some point this may be part of a CMake package with several components for which a single CMAKE_INSTALL_PREFIX does
169 # not make sense, so let's manage the install path separately.
170 set(GMXPLUGIN_INSTALL_PATH ${GMXPLUGIN_DEFAULT_SITE_PACKAGES} CACHE PATH
171 "Path to Python module install location (site-packages). For an automatically determined install location based on \
172 the Python installation, leave undefined or explicitly undefined with -UGMXPLUGIN_INSTALL_PATH and, optionally, set \
173 GMXPLUGIN_USER_INSTALL on or off to specify the installation's site-packages directory or the 'user' site-packages \
176 if(GMXAPI_EXTENSION_MASTER_PROJECT)
177 message(STATUS "Python module will be installed to GMXPLUGIN_INSTALL_PATH cache value ${GMXPLUGIN_INSTALL_PATH}")
180 # TODO: (Issue #3027) Handle Googletest sources both for forked projects and
181 # for GROMACS-project-internal testing.
182 # Projects based on this subtree should bundle googletest sources.
183 # The GROMACS project already bundles googletest sources for internal use, but
184 # they will only be available to this project with some additional management by
185 # the parent project CMake configuration.
186 option(DOWNLOAD_GOOGLETEST "Download the latest master branch of googletest." OFF)
187 mark_as_advanced(DOWNLOAD_GOOGLETEST)
189 # Prevent overriding the parent project's compiler/linker
190 # settings on Windows
191 set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
194 # Now move on to building the custom code.
195 add_subdirectory(src)
197 # Set up documentation build targets (work in progress).
198 add_subdirectory(docs)
200 # Process CMake configuration for Python and C++ tests.
204 add_subdirectory(tests)