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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindCMath
--------
Find the native CMath includes and library.
IMPORTED Targets
^^^^^^^^^^^^^^^^
This module defines :prop_tgt:`IMPORTED` target ``CMath::CMath``, if
CMath has been found.
Result Variables
^^^^^^^^^^^^^^^^
This module defines the following variables:
::
CMath_INCLUDE_DIRS - Where to find math.h
CMath_LIBRARIES - List of libraries when using CMath.
CMath_FOUND - True if CMath found.
#]=======================================================================]
include(CheckSymbolExists)
include(CheckLibraryExists)
check_symbol_exists(pow "math.h" CMath_HAVE_LIBC_POW)
if(NOT CMath_HAVE_LIBC_POW)
find_library(CMath_LIBRARY NAMES m)
set(CMAKE_REQUIRED_LIBRARIES_SAVE ${CMAKE_REQUIRED_LIBRARIES})
set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${CMath_LIBRARY})
check_symbol_exists(pow "math.h" CMath_HAVE_LIBM_POW)
set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES_SAVE})
endif()
set(CMath_pow FALSE)
if(CMath_HAVE_LIBC_POW OR CMath_HAVE_LIBM_POW)
set(CMath_pow TRUE)
endif()
set(CMath_INCLUDE_DIRS)
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(CMath REQUIRED_VARS CMath_pow)
if(CMath_FOUND)
if(NOT CMath_INCLUDE_DIRS)
set(CMath_INCLUDE_DIRS)
endif()
if(NOT CMath_LIBRARIES)
if (CMath_LIBRARY)
set(CMath_LIBRARIES ${CMath_LIBRARY})
endif()
endif()
if(NOT TARGET CMath::CMath)
if(CMath_LIBRARIES)
add_library(CMath::CMath UNKNOWN IMPORTED)
set_target_properties(CMath::CMath PROPERTIES
IMPORTED_LOCATION "${CMath_LIBRARY}")
else()
add_library(CMath::CMath INTERFACE IMPORTED)
endif()
endif()
endif()
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