From 5e10343cac59c8bb477b271f5b6536d7e85a4407 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Damian=20H=C3=B6ster?= <damian.hoester@posteo.de>
Date: Wed, 16 Jul 2025 20:50:24 +0200
Subject: [PATCH] Add option to compile CUDA with clang

Probably not Windows-compatible for buildFFVSHIPcudaclang? Only tested on Linux.
---
 Makefile | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Makefile b/Makefile
index d33aeb7..86453e1 100644
--- a/Makefile
+++ b/Makefile
@@ -8,6 +8,7 @@ ifeq ($(OS),Windows_NT)
 	exeend := .exe
     fpiccuda :=
     fpicamd :=
+    fpicclang := 
     plugin_install_path := $(APPDATA)\VapourSynth\plugins64
     exe_install_path := $(ProgramFiles)\FFVship.exe
     ffvshiplibheader := -I include -lz_imp -lz -lffms2
@@ -16,6 +17,7 @@ else
 	exeend :=
     fpiccuda := -Xcompiler -fPIC
     fpicamd := -fPIC
+    fpicclang := -fPIC
     plugin_install_path := $(DESTDIR)$(PREFIX)/lib/vapoursynth
     exe_install_path := $(DESTDIR)$(PREFIX)/bin
     ffvshiplibheader := $(shell pkg-config --libs ffms2 zimg)
@@ -29,6 +31,9 @@ buildFFVSHIP: src/ffmpegmain.cpp .FORCE
 buildFFVSHIPcuda: src/ffmpegmain.cpp .FORCE
 	nvcc -x cu src/ffmpegmain.cpp -std=c++17  -arch=native $(subst -pthread,-Xcompiler="-pthread",$(ffvshiplibheader)) -o FFVship$(exeend)
 
+buildFFVSHIPcudaclang: src/ffmpegmain.cpp .FORCE
+	clang++ -x cuda src/ffmpegmain.cpp -std=c++17 --cuda-gpu-arch=native -O3 -fcuda-approx-transcendentals -L/usr/local/cuda/lib64 -lcudart $(ffvshiplibheader) -o FFVship$(exeend)
+
 buildFFVSHIPall: src/ffmpegmain.cpp .FORCE
 	hipcc src/ffmpegmain.cpp -std=c++17 --offload-arch=gfx1100,gfx1101,gfx1102,gfx1103,gfx1030,gfx1031,gfx1032,gfx906,gfx801,gfx802,gfx803 -Wno-unused-result -Wno-ignored-attributes $(ffvshiplibheader) -o FFVship$(exeend)
 
@@ -41,6 +46,9 @@ build: src/vapoursynthPlugin.cpp .FORCE
 buildcuda: src/vapoursynthPlugin.cpp .FORCE
 	nvcc -x cu src/vapoursynthPlugin.cpp -std=c++17 -arch=native -I "$(current_dir)include" -shared $(fpiccuda) -o "$(current_dir)vship$(dllend)"
 
+buildcudaclang: src/vapoursynthPlugin.cpp .FORCE
+	clang++ -x cuda src/vapoursynthPlugin.cpp -std=c++17 --cuda-gpu-arch=native -O3 -fcuda-approx-transcendentals -I "$(current_dir)include" -shared $(fpicclang) -o "$(current_dir)vship$(dllend)"
+
 buildcudaall: src/vapoursynthPlugin.cpp .FORCE
 	nvcc -x cu src/vapoursynthPlugin.cpp -std=c++17 -arch=all -I "$(current_dir)include" -shared $(fpiccuda) -o "$(current_dir)vship$(dllend)"