Using bundled libc++ in ThirdParty

Development Programming & Scripting C++
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1

I’m building a ThirdParty library (RadeonRays), and would like to cause it to compile and link against the libc++ which is bundled with Unreal. Are there any examples of doing this? I’ve seen this recommendation but can’t find any practical examples of doing so.

2

This is exactly and precisely what I need. Thank you!!!

3

Hey,

you can examine the build scripts of the third party libs bundled with Unreal (e.g. libglslang or hlslcc). Squarely it boils down to setting these options (I’m using UE_THIRD_PARTY_DIR as a shortcut for the absolute path to Engine/Source/ThirdParty):

Compile:

-nostdinc++ -I $UE_THIRD_PARTY_DIR/Linux/LibCxx/include/ -I $UE_THIRD_PARTY_DIR/Linux/LibCxx/include/c++/v1

Link:

-nodefaultlibs -L $UE_THIRD_PARTY_DIR/Linux/LibCxx/lib/Linux/x86_64-unknown-linux-gnu/  $UE_THIRD_PARTY_DIR/Linux/LibCxx/lib/Linux/x86_64-unknown-linux-gnu/libc++.a $UE_THIRD_PARTY_DIR/Linux/LibCxx/lib/Linux/x86_64-unknown-linux-gnu/libc++abi.a -lm -lc -lgcc_s -lgcc

Hope this helps.