Having a warning in compilation tempnam

It is not a problem for but I just wanna ask if it good to ignore it or give a right solution about my warning message

/home/tiny/Documents/UnrealEngine-release/Engine/Source/ThirdParty/FBX/2016.1.1/lib/gcc4/x86_64-unknown-linux-gnu/release//libfbxsdk.a(fbxutils.o): In function fbxsdk::FbxPathUtils::GenerateFileName(char const*, char const*)': (.text+0x4b8): warning: the use of tempnam’ is dangerous, better use `mkstemp

I can not edit it nor open the file it say so what kind of thing I will do. Just a minor problem but it’s better if someone can explain regarding this topic. Thanks for the answer.