FindLibM.cmake

#.rst:
# FindLibM
# --------
#
# Find the native realtime includes and library.
#
# IMPORTED Targets
# ^^^^^^^^^^^^^^^^
#
# This module defines :prop_tgt:`IMPORTED` target ``LIBM::LIBM``, if
# LIBM has been found.
#
# Result Variables
# ^^^^^^^^^^^^^^^^
#
# This module defines the following variables:
#
# ::
#
#   LIBM_INCLUDE_DIRS  - where to find math.h, etc.
#   LIBM_LIBRARIES     - List of libraries when using libm.
#   LIBM_FOUND         - True if math library found.
#
# Hints
# ^^^^^
#
# A user may set ``LIBM_ROOT`` to a math library installation root to tell this
# module where to look.

find_path(LIBM_INCLUDE_DIRS
  NAMES math.h
  PATHS /usr/include /usr/local/include /usr/local/bic/include
  NO_DEFAULT_PATH
)
find_library(LIBM_LIBRARIES m)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(LibM DEFAULT_MSG LIBM_LIBRARIES LIBM_INCLUDE_DIRS)
mark_as_advanced(LIBM_INCLUDE_DIRS LIBM_LIBRARIES)

if(LIBM_FOUND)
    if(NOT TARGET LIBM::LIBM)
      add_library(LIBM::LIBM UNKNOWN IMPORTED)
      set_target_properties(LIBM::LIBM PROPERTIES
        IMPORTED_LOCATION "${LIBM_LIBRARIES}"
        INTERFACE_INCLUDE_DIRECTORIES "${LIBM_INCLUDE_DIRS}")
    endif()
endif()