From 6e8072c20d37f2ba4b0eaded448d21ffa6f073a1 Mon Sep 17 00:00:00 2001
From: Paul Zander <negril.nx@gmail.com>
Date: Mon, 21 Apr 2025 17:49:59 +0200
Subject: [PATCH] optix compile flags

Copy CUDA_HOST_COMPILER logic from cuda to optix

pass CUDA_NVCC_FLAGS into the custom nvcc call for optix, as for
WITH_CYCLES_CUDA_BINARIES

Signed-off-by: Paul Zander <negril.nx+gentoo@gmail.com>
Signed-off-by: Paul Zander <negril.nx@gmail.com>

diff --git a/intern/cycles/kernel/CMakeLists.txt b/intern/cycles/kernel/CMakeLists.txt
index 6144de7be33..a59d6dd2b7e 100644
--- a/intern/cycles/kernel/CMakeLists.txt
+++ b/intern/cycles/kernel/CMakeLists.txt
@@ -943,6 +943,11 @@ if(WITH_CYCLES_DEVICE_OPTIX AND WITH_CYCLES_CUDA_BINARIES)
       -Wno-deprecated-gpu-targets
       -o ${output})
 
+    if(CUDA_HOST_COMPILER)
+      set(cuda_flags ${cuda_flags}
+        -ccbin="${CUDA_HOST_COMPILER}")
+    endif()
+
     if(WITH_NANOVDB)
       set(cuda_flags ${cuda_flags}
         -D WITH_NANOVDB)
@@ -970,6 +975,7 @@ if(WITH_CYCLES_DEVICE_OPTIX AND WITH_CYCLES_CUDA_BINARIES)
         ${CUDA_NVCC_EXECUTABLE}
         --ptx
         -arch=sm_50
+        ${CUDA_NVCC_FLAGS}
         ${cuda_flags}
         ${input}
       WORKING_DIRECTORY
-- 
2.49.0