Merge pull request #1086 from junghans/find_lammps_cmake

    endif()

endfunction(validate_option)

function(get_lammps_version version_header variable)

    file(READ ${version_header} line)

    set(MONTHS x Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec)

    string(REGEX REPLACE "#define LAMMPS_VERSION \"([0-9]+) ([A-Za-z]+) ([0-9]+)\"" "\\1" day "${line}")

    string(REGEX REPLACE "#define LAMMPS_VERSION \"([0-9]+) ([A-Za-z]+) ([0-9]+)\"" "\\2" month "${line}")

    string(REGEX REPLACE "#define LAMMPS_VERSION \"([0-9]+) ([A-Za-z]+) ([0-9]+)\"" "\\3" year "${line}")

    string(STRIP ${day} day)

    string(STRIP ${month} month)

    string(STRIP ${year} year)

    list(FIND MONTHS "${month}" month)

    string(LENGTH ${day} day_length)

    string(LENGTH ${month} month_length)

    if(day_length EQUAL 1)

        set(day "0${day}")

    endif()

    if(month_length EQUAL 1)

        set(month "0${month}")

    endif()

    set(${variable} "${year}${month}${day}" PARENT_SCOPE)

endfunction()

get_lammps_version(${LAMMPS_SOURCE_DIR}/version.h LAMMPS_VERSION)

# Cmake modules/macros are in a subdirectory to keep this file cleaner

set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/Modules)

  if(BUILD_SHARED_LIBS) # for all pkg libs, mpi_stubs and linalg

    set(CMAKE_POSITION_INDEPENDENT_CODE ON)

  endif()

  set(LIB_SUFFIX "" CACHE STRING "Suffix to append to liblammps and pkg-config file")

  mark_as_advanced(LIB_SUFFIX)

  if(LIB_SUFFIX)

    set(LIB_SUFFIX "_${LIB_SUFFIX}")

  set(LAMMPS_LIB_SUFFIX "" CACHE STRING "Suffix to append to liblammps and pkg-config file")

  mark_as_advanced(LAMMPS_LIB_SUFFIX)

  if(LAMMPS_LIB_SUFFIX)

    set(LAMMPS_LIB_SUFFIX "_${LAMMPS_LIB_SUFFIX}")

  endif()

endif()

  if(LAMMPS_DEPS)

    add_dependencies(lammps ${LAMMPS_DEPS})

  endif()

  set_target_properties(lammps PROPERTIES OUTPUT_NAME lammps${LIB_SUFFIX})

  if(BUILD_SHARED_LIBS)

  set_target_properties(lammps PROPERTIES OUTPUT_NAME lammps${LAMMPS_LIB_SUFFIX})

  set_target_properties(lammps PROPERTIES SOVERSION ${SOVERSION})

  install(TARGETS lammps LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})

  install(FILES ${LAMMPS_SOURCE_DIR}/library.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/lammps)

    configure_file(pkgconfig/liblammps.pc.in ${CMAKE_CURRENT_BINARY_DIR}/liblammps${LIB_SUFFIX}.pc @ONLY)

    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/liblammps${LIB_SUFFIX}.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)

  endif()

  configure_file(pkgconfig/liblammps.pc.in ${CMAKE_CURRENT_BINARY_DIR}/liblammps${LAMMPS_LIB_SUFFIX}.pc @ONLY)

  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/liblammps${LAMMPS_LIB_SUFFIX}.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)

  configure_file(FindLAMMPS.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/FindLAMMPS${LAMMPS_LIB_SUFFIX}.cmake @ONLY)

  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/FindLAMMPS${LAMMPS_LIB_SUFFIX}.cmake DESTINATION ${CMAKE_INSTALL_DATADIR}/cmake/Module)

else()

  list(APPEND LMP_SOURCES ${LIB_SOURCES})

endif()

# - Find liblammps

# Find the native liblammps headers and libraries.

#

# The following variables will set:

#  LAMMPS_INCLUDE_DIRS - where to find lammps/library.h, etc.

#  LAMMPS_LIBRARIES    - List of libraries when using lammps.

#  LAMMPS_API_DEFINES  - lammps library api defines

#  LAMMPS_VERSION      - lammps library version 

#  LAMMPS_FOUND        - True if liblammps found.

#

# In addition a LAMMPS::LAMMPS imported target is getting created.

#

#  LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator

#  http://lammps.sandia.gov, Sandia National Laboratories

#  Steve Plimpton, sjplimp@sandia.gov

#

#  Copyright (2003) Sandia Corporation.  Under the terms of Contract

#  DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains

#  certain rights in this software.  This software is distributed under

#  the GNU General Public License.

#

#  See the README file in the top-level LAMMPS directory.

#

find_package(PkgConfig)

pkg_check_modules(PC_LAMMPS liblammps@LAMMPS_LIB_SUFFIX@)

find_path(LAMMPS_INCLUDE_DIR lammps/library.h HINTS ${PC_LAMMPS_INCLUDE_DIRS} @CMAKE_INSTALL_FULL_INCLUDEDIR@)

set(LAMMPS_VERSION @LAMMPS_VERSION@)

set(LAMMPS_API_DEFINES @LAMMPS_API_DEFINES@)

find_library(LAMMPS_LIBRARY NAMES lammps@LAMMPS_LIB_SUFFIX@ HINTS ${PC_LAMMPS_LIBRARY_DIRS} @CMAKE_INSTALL_FULL_LIBDIR@)

set(LAMMPS_INCLUDE_DIRS "${LAMMPS_INCLUDE_DIR}")

set(LAMMPS_LIBRARIES "${LAMMPS_LIBRARY}")

include(FindPackageHandleStandardArgs)

# handle the QUIETLY and REQUIRED arguments and set LAMMPS_FOUND to TRUE

# if all listed variables are TRUE

find_package_handle_standard_args(LAMMPS REQUIRED_VARS LAMMPS_LIBRARY LAMMPS_INCLUDE_DIR VERSION_VAR LAMMPS_VERSION)

mark_as_advanced(LAMMPS_INCLUDE_DIR LAMMPS_LIBRARY)

if(LAMMPS_FOUND AND NOT TARGET LAMMPS::LAMMPS)

  add_library(LAMMPS::LAMMPS UNKNOWN IMPORTED)

  set_target_properties(LAMMPS::LAMMPS PROPERTIES IMPORTED_LOCATION "${LAMMPS_LIBRARY}" INTERFACE_INCLUDE_DIRECTORIES "${LAMMPS_INCLUDE_DIR}" INTERFACE_COMPILE_DEFINITIONS "${LAMMPS_API_DEFINES}")

endif()

# after you added @CMAKE_INSTALL_FULL_LIBDIR@/pkg-config to PKG_CONFIG_PATH,

# e.g. export PKG_CONFIG_PATH=@CMAKE_INSTALL_FULL_LIBDIR@/pkgconfig

prefix=@CMAKE_INSTALL_FULL_PREFIX@

prefix=@CMAKE_INSTALL_PREFIX@

libdir=@CMAKE_INSTALL_FULL_LIBDIR@

includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@

URL: http://lammps.sandia.gov

Version:

Requires:

Libs: -L${libdir} -llammps@LIB_SUFFIX@@

Libs: -L${libdir} -llammps@LAMMPS_LIB_SUFFIX@

Libs.private: -lm

Cflags: -I${includedir} @LAMMPS_API_DEFINES@