cmake OP_HAVE_LIBM examples

glKarin/com.n0n3m4.diii4a Q3E/src/main/jni/xash3d/xash3d-fwgs/3rdparty/opusfile/opusfile/CMakeLists.txt :22 

check_library_exists(m lrintf "" OP_HAVE_LIBM)

glKarin/com.n0n3m4.diii4a Q3E/src/main/jni/xash3d/xash3d-fwgs/3rdparty/opusfile/opusfile/CMakeLists.txt :44 

target_link_libraries(fwgs_opusfile
  PUBLIC
    fwgs_ogg
    fwgs_opus
    $<$<BOOL:${OP_HAVE_LIBM}>:m>
)

glKarin/com.n0n3m4.diii4a Q3E/src/main/jni/xash3d/xash3d-fwgs/3rdparty/opusfile/opusfile/CMakeLists.txt :135 

target_link_libraries(opusurl
    PRIVATE
      opusfile
      OpenSSL::SSL
      $<$<C_COMPILER_ID:MSVC>:ws2_32>
      $<$<C_COMPILER_ID:MSVC>:crypt32>
      $<$<BOOL:${OP_HAVE_LIBM}>:m>
  )

Warzone2100/warzone2100 lib/sound/CMakeLists.txt :76 

check_library_exists(m lrintf "" OP_HAVE_LIBM)