cmake_minimum_required(VERSION 3.18)              # add_subdirectory of vmie (needs find_program REQUIRED)
project(vgpu-perception C)                        # standalone host project, native gcc

set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED ON)
set(CMAKE_C_EXTENSIONS OFF)

# vmie is our own library — reference its SOURCES by path, never a third_party copy.
# LIBVMIE_PATH is supplied from OUTSIDE at configure time → no private path in the tree.
set(LIBVMIE_PATH "" CACHE PATH "Path to the vmie library source tree (host memory model)")
if(NOT LIBVMIE_PATH)
    message(FATAL_ERROR "vgpu-perception: set -DLIBVMIE_PATH=/path/to/vmie/sources")
endif()

# Build vmie's static lib from its own sources. EXCLUDE_FROM_ALL: only the `vmie`
# target we link is built (not vmie's CLI/scan demos or its guest exe). memmodel.h
# arrives transitively via the vmie target's PUBLIC include dir — no manual include,
# no vendored header to keep in sync.
add_subdirectory(${LIBVMIE_PATH} ${CMAKE_BINARY_DIR}/vmie-build EXCLUDE_FROM_ALL)

set(REPO ${CMAKE_CURRENT_SOURCE_DIR}/../..)       # repo root (this lives in src/perception)

add_library(vgpu-perception STATIC
    discover.c
    sample.c
    control.c)
target_include_directories(vgpu-perception
    PUBLIC  ${REPO}/include                        # vgpu_perception.h, vgpu_stream.h
    PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include)   # perception-internal.h
target_link_libraries(vgpu-perception PUBLIC vmie) # memmodel.h include comes transitively
target_compile_options(vgpu-perception PRIVATE -O2 -Wall -Wextra)

# table-driven test: invariant predicates + flat sampling smoke
enable_testing()
add_executable(vgpu-perception-test test/test_perception.c)
target_include_directories(vgpu-perception-test
    PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include)   # memmodel.h via vgpu-perception -> vmie (transitive)
target_link_libraries(vgpu-perception-test PRIVATE vgpu-perception)
target_compile_options(vgpu-perception-test PRIVATE -O2 -Wall -Wextra)
add_test(NAME vgpu-perception-test COMMAND vgpu-perception-test)