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35 set(GMX_MUPARSER_REQUIRED_VERSION "2.3")
37 include(gmxOptionUtilities)
39 # Make a three-state enumeration, defaulting to
40 gmx_option_multichoice(GMX_USE_MUPARSER
41 "How to handle the muparser dependency of GROMACS"
43 INTERNAL EXTERNAL NONE)
44 mark_as_advanced(GMX_USE_MUPARSER)
46 # Make a fully functional muparser library target that libgromacs can
47 # depend on regardless of how the user directed muparser support and/or
49 function(gmx_manage_muparser)
50 if(GMX_USE_MUPARSER STREQUAL "INTERNAL")
51 # Use cmake's FetchContent to organize the build, even though
52 # the content is already present in src/external. In
53 # particular, it sets up an easy call to add_subdirectory().
55 FetchContent_Declare(muparser SOURCE_DIR ${CMAKE_SOURCE_DIR}/src/external/muparser)
56 if (NOT ${muparser}_POPULATED)
58 set(OpenMP_FIND_QUIETLY ON)
60 FetchContent_Populate(muparser)
62 add_subdirectory(${muparser_SOURCE_DIR} ${muparser_BINARY_DIR})
63 if (BUILD_SHARED_LIBS)
64 # Ensure muparser is in the export set called libgromacs,
65 # so that it gets installed along with libgromacs.
66 install(TARGETS muparser EXPORT libgromacs)
69 gmx_target_warning_suppression(muparser /wd4310 HAS_NO_MSVC_CAST_TRUNCATES_CONSTANT_VALUE)
72 set(HAVE_MUPARSER 1 CACHE INTERNAL "Is muparser found?")
73 elseif(GMX_USE_MUPARSER STREQUAL "EXTERNAL")
74 # Find an external muparser library.
75 find_package(muparser ${GMX_MUPARSER_REQUIRED_VERSION})
76 if(NOT MUPARSER_FOUND OR MUPARSER_VERSION VERSION_LESS GMX_MUPARSER_REQUIRED_VERSION)
77 message(FATAL_ERROR "External muparser >= ${GMX_MUPARSER_REQUIRED_VERSION} could not be found, please adjust your pkg-config path to include the muparser.pc file")
80 set(HAVE_MUPARSER 1 CACHE INTERNAL "Is muparser found?")
82 # Create a dummy link target so the calling code doesn't need to know
83 # whether muparser support is being compiled.
84 add_library(muparser INTERFACE)
85 # Add the muparser interface library to the libgromacs Export name, even though
86 # we will not be installing any content.
87 install(TARGETS muparser EXPORT libgromacs)
89 set(HAVE_MUPARSER 0 CACHE INTERNAL "Is muparser found?")
91 mark_as_advanced(HAVE_MUPARSER)