MegEngine/cmake/cndev.cmake

find_library(
  CNDEV_LIBRARY
  NAMES libcndev.so
  PATHS ${ALTER_LD_LIBRARY_PATHS} "$ENV{NEUWARE_HOME}/lib64" ${CMAKE_INSTALL_PREFIX}
  HINTS ${ALTER_LIBRARY_PATHS}
  PATH_SUFFIXES lib lib64
  DOC "CNDEV library.")

if(CNDEV_LIBRARY STREQUAL "CNDEV_LIBRARY-NOTFOUND")
  message(FATAL_ERROR "Can not find CNDEV Library")
endif()

get_filename_component(__found_cndev_root ${CNDEV_LIBRARY}/../.. REALPATH)
find_path(
  CNDEV_INCLUDE_DIR
  NAMES cndev.h
  HINTS "$ENV{NEUWARE_HOME}/include" ${__found_cndev_root}
  PATH_SUFFIXES include
  DOC "Path to CNDEV include directory.")

if(CNDEV_INCLUDE_DIR STREQUAL "CNDEV_INCLUDE_DIR-NOTFOUND")
  message(FATAL_ERROR "Can not find CNDEV Library")
endif()

file(STRINGS "${CNDEV_INCLUDE_DIR}/cndev.h" CNDEV_1
     REGEX "^#define CNDEV_VERSION_1 [0-9]+.*$")
file(STRINGS "${CNDEV_INCLUDE_DIR}/cndev.h" CNDEV_2
     REGEX "^#define CNDEV_VERSION_2 [0-9]+.*$")
file(STRINGS "${CNDEV_INCLUDE_DIR}/cndev.h" CNDEV_3
     REGEX "^#define CNDEV_VERSION_3 [0-9]+.*$")
file(STRINGS "${CNDEV_INCLUDE_DIR}/cndev.h" CNDEV_4
     REGEX "^#define CNDEV_VERSION_4 [0-9]+.*$")
file(STRINGS "${CNDEV_INCLUDE_DIR}/cndev.h" CNDEV_5
     REGEX "^#define CNDEV_VERSION_5 [0-9]+.*$")

string(REGEX REPLACE "^#define CNDEV_VERSION_1 ([0-9]+).*$" "\\1" CNDEV_VERSION_1
                     "${CNDEV_1}")
string(REGEX REPLACE "^#define CNDEV_VERSION_2 ([0-9]+).*$" "\\1" CNDEV_VERSION_2
                     "${CNDEV_2}")
string(REGEX REPLACE "^#define CNDEV_VERSION_3 ([0-9]+).*$" "\\1" CNDEV_VERSION_3
                     "${CNDEV_3}")
string(REGEX REPLACE "^#define CNDEV_VERSION_4 ([0-9]+).*$" "\\1" CNDEV_VERSION_4
                     "${CNDEV_4}")
string(REGEX REPLACE "^#define CNDEV_VERSION_5 ([0-9]+).*$" "\\1" CNDEV_VERSION_5
                     "${CNDEV_5}")
set(CNDEV_VERSION_STRING
    "${CNDEV_VERSION_1}.${CNDEV_VERSION_2}.${CNDEV_VERSION_3}.${CNDEV_VERSION_4}.${CNDEV_VERSION_5}"
)

add_library(libcndev SHARED IMPORTED)

set_target_properties(
  libcndev PROPERTIES IMPORTED_LOCATION ${CNDEV_LIBRARY} INTERFACE_INCLUDE_DIRECTORIES
                                                         ${CNDEV_INCLUDE_DIR})

message(
  STATUS "Found CNDEV: ${__found_cndev_root} (found version: ${CNDEV_VERSION_STRING})")