diff --git a/cmake/FindESMF.cmake b/cmake/FindESMF.cmake new file mode 100644 index 0000000000..c79c5d3a1e --- /dev/null +++ b/cmake/FindESMF.cmake @@ -0,0 +1,135 @@ +# - Try to find ESMF +# +# Requires setting ESMFMKFILE to the filepath of esmf.mk. If this is NOT set, +# then ESMF_FOUND will always be FALSE. If ESMFMKFILE exists, then ESMF_FOUND=TRUE +# and all ESMF makefile variables will be set in the global scope. Optionally, +# set ESMF_MKGLOBALS to a string list to filter makefile variables. For example, +# to globally scope only ESMF_LIBSDIR and ESMF_APPSDIR variables, use this CMake +# command in CMakeLists.txt: +# +# set(ESMF_MKGLOBALS "LIBSDIR" "APPSDIR") + + +# Add the ESMFMKFILE path to the cache if defined as system env variable +if(DEFINED ENV{ESMFMKFILE} AND NOT DEFINED ESMFMKFILE) + set(ESMFMKFILE $ENV{ESMFMKFILE} CACHE FILEPATH "Path to ESMF mk file") +endif() + +# If it's not explicitly set try to find esmf.mk file in default locations (ESMF_ROOT, CMAKE_PREFIX_PATH, etc) +if(NOT DEFINED ESMFMKFILE) + find_path(ESMFMKFILE_PATH esmf.mk PATH_SUFFIXES lib lib64) + if(ESMFMKFILE_PATH) + set(ESMFMKFILE ${ESMFMKFILE_PATH}/esmf.mk) + message(STATUS "Found esmf.mk file ${ESMFMKFILE}") + else() + message(STATUS "ESMFMKFILE not defined. This is the path to esmf.mk file. \ +Without this filepath, ESMF_FOUND will always be FALSE.") + endif() +endif() + +# Only parse the mk file if it is found +if(EXISTS ${ESMFMKFILE}) + # Read the mk file + file(STRINGS "${ESMFMKFILE}" esmfmkfile_contents) + # Parse each line in the mk file + foreach(str ${esmfmkfile_contents}) + # Only consider uncommented lines + string(REGEX MATCH "^[^#]" def ${str}) + # Line is not commented + if(def) + # Extract the variable name + string(REGEX MATCH "^[^=]+" esmf_varname ${str}) + # Extract the variable's value + string(REGEX MATCH "=.+$" esmf_vardef ${str}) + # Only for variables with a defined value + if(esmf_vardef) + # Get rid of the assignment string + string(SUBSTRING ${esmf_vardef} 1 -1 esmf_vardef) + # Remove whitespace + string(STRIP ${esmf_vardef} esmf_vardef) + # A string or single-valued list + if(NOT DEFINED ESMF_MKGLOBALS) + # Set in global scope + set(${esmf_varname} ${esmf_vardef}) + # Don't display by default in GUI + mark_as_advanced(esmf_varname) + else() # Need to filter global promotion + foreach(m ${ESMF_MKGLOBALS}) + string(FIND ${esmf_varname} ${m} match) + # Found the string + if(NOT ${match} EQUAL -1) + # Promote to global scope + set(${esmf_varname} ${esmf_vardef}) + # Don't display by default in the GUI + mark_as_advanced(esmf_varname) + # No need to search for the current string filter + break() + endif() + endforeach() + endif() + endif() + endif() + endforeach() + + # Construct ESMF_VERSION from ESMF_VERSION_STRING_GIT + # ESMF_VERSION_MAJOR and ESMF_VERSION_MINOR are defined in ESMFMKFILE + set(ESMF_VERSION 0) + set(ESMF_VERSION_PATCH ${ESMF_VERSION_REVISION}) + set(ESMF_BETA_RELEASE FALSE) + if(ESMF_VERSION_BETASNAPSHOT MATCHES "^('T')$") + set(ESMF_BETA_RELEASE TRUE) + string(REGEX REPLACE ".*beta_snapshot_*\([0-9]*\).*" "\\1" ESMF_BETA_SNAPSHOT "${ESMF_VERSION_STRING_GIT}") + message(STATUS "Detected ESMF Beta snapshot ${ESMF_BETA_SNAPSHOT}") + endif() + set(ESMF_VERSION "${ESMF_VERSION_MAJOR}.${ESMF_VERSION_MINOR}.${ESMF_VERSION_PATCH}") + + separate_arguments(ESMF_F90COMPILEPATHS NATIVE_COMMAND ${ESMF_F90COMPILEPATHS}) + foreach(ITEM ${ESMF_F90COMPILEPATHS}) + string(REGEX REPLACE "^-I" "" ITEM "${ITEM}") + list(APPEND tmp ${ITEM}) + endforeach() + set(ESMF_F90COMPILEPATHS ${tmp}) + + # Look for static library, if not found try dynamic library + find_library(esmf_lib NAMES libesmf.a PATHS ${ESMF_LIBSDIR}) + if(esmf_lib MATCHES "esmf_lib-NOTFOUND") + unset(esmf_lib) + message(STATUS "Static ESMF library not found, searching for dynamic library instead") + find_library(esmf_lib NAMES esmf_fullylinked libesmf.so PATHS ${ESMF_LIBSDIR}) + if(esmf_lib MATCHES "esmf_lib-NOTFOUND") + unset(esmf_lib) + message(STATUS "Neither the dynamic nor the static ESMF library was found") + else() + set(_library_type SHARED) + endif() + else() + set(_library_type STATIC) + endif() + + string(STRIP "${ESMF_F90ESMFLINKRPATHS} ${ESMF_F90ESMFLINKPATHS} ${ESMF_F90LINKPATHS} ${ESMF_F90LINKLIBS} ${ESMF_F90LINKOPTS}" ESMF_INTERFACE_LINK_LIBRARIES) + set(ESMF_LIBRARY_LOCATION ${esmf_lib}) + +else() + + message(WARNING "ESMFMKFILE ${ESMFMKFILE} does not exist") + +endif() + +## Finalize find_package +include(FindPackageHandleStandardArgs) + +find_package_handle_standard_args( + ${CMAKE_FIND_PACKAGE_NAME} + REQUIRED_VARS ESMF_LIBRARY_LOCATION + ESMF_INTERFACE_LINK_LIBRARIES + ESMF_F90COMPILEPATHS + VERSION_VAR ESMF_VERSION) + +## If ESMF is found create imported library target +if(ESMF_FOUND) + add_library(esmf ${_library_type} IMPORTED) + set_target_properties(esmf PROPERTIES + IMPORTED_LOCATION "${ESMF_LIBRARY_LOCATION}" + INTERFACE_INCLUDE_DIRECTORIES "${ESMF_F90COMPILEPATHS}" + INTERFACE_LINK_LIBRARIES "${ESMF_INTERFACE_LINK_LIBRARIES}") +endif() \ No newline at end of file