1cmake_minimum_required(VERSION 3.19)
 2cmake_policy(SET CMP0114 NEW)
 3
 4include(ExternalProject)
 5
 6message(STATUS "Including the VirtGPU/Virglrenderer API Remoting")
 7
 8# Download venus_hw.h from virglrenderer repository
 9ExternalProject_Add(
10    venus_hw_header
11    URL https://gitlab.freedesktop.org/virgl/virglrenderer/-/raw/virglrenderer-1.2.0/src/venus_hw.h
12    DOWNLOAD_NO_EXTRACT YES
13    DOWNLOAD_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include
14    DOWNLOAD_NAME venus_hw.h
15    CONFIGURE_COMMAND ""
16    BUILD_COMMAND ""
17    INSTALL_COMMAND ""
18    LOG_DOWNLOAD ON
19)
20
21if (NOT GGML_VIRTGPU_BACKEND STREQUAL "ONLY")
22    message(STATUS "Enable the VirtGPU/Virglrenderer API Remoting frontend library")
23
24    find_package(PkgConfig REQUIRED)
25    pkg_check_modules(DRM REQUIRED libdrm)
26    if (NOT GGML_BACKEND_DL)
27      # cannot simply use USE_VIRTGPU, as in the 'else()' case the
28      # frontend isn't compiled
29      target_compile_definitions(ggml PUBLIC "GGML_USE_VIRTGPU_FRONTEND")
30    endif()
31
32    ggml_add_backend_library(ggml-virtgpu
33                             ggml-backend-buffer.cpp
34                             ggml-backend.cpp
35                             ggml-backend-device.cpp
36                             ggml-backend-reg.cpp
37                             ggml-backend-buffer-type.cpp
38                             virtgpu-apir.h
39                             virtgpu-forward.gen.h
40                             virtgpu.cpp
41                             virtgpu-shm.cpp
42                             virtgpu-utils.cpp
43                             virtgpu-forward-device.cpp
44                             virtgpu-forward-buffer-type.cpp
45                             virtgpu-forward-buffer.cpp
46                             virtgpu-forward-backend.cpp
47                             virtgpu-forward-impl.h
48                             apir_cs_ggml-rpc-front.cpp
49                             ../../include/ggml-virtgpu.h)
50
51    target_include_directories(ggml-virtgpu PUBLIC /usr/include/libdrm/)
52
53    target_link_libraries(ggml-virtgpu PUBLIC ${DRM_LIBRARIES})
54    target_include_directories(ggml-virtgpu PUBLIC ${DRM_INCLUDE_DIRS})
55    target_compile_options(ggml-virtgpu PUBLIC ${DRM_CFLAGS_OTHER})
56
57    target_include_directories(ggml-virtgpu PUBLIC ./include)
58    target_include_directories(ggml-virtgpu PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
59
60    # Ensure venus_hw.h is downloaded before building ggml-virtgpu
61    add_dependencies(ggml-virtgpu venus_hw_header)
62
63    target_compile_options(ggml-virtgpu PRIVATE -std=c++20)
64else()
65    message(STATUS "Not building the VirtGPU/Virglrenderer API Remoting frontend library")
66endif()
67
68if (NOT GGML_VIRTGPU_BACKEND STREQUAL "OFF")
69    add_subdirectory("backend")
70endif()