option(DEPTHLOG_FETCH_SPDLOG "Fetch spdlog if not found" ON)

option(DEPTHLOG_ENABLE "Enable depthlog logging" ON)

if(DEPTHLOG_FETCH_SPDLOG)

include(FetchContent)

find_package(spdlog QUIET CONFIG)

if(NOT spdlog_FOUND)

# Ensure fetched dependencies build with PIC (needed if they end up in a .so)

set(CMAKE_POSITION_INDEPENDENT_CODE ON)

# spdlog options (avoid surprises)

set(SPDLOG_BUILD_SHARED OFF CACHE BOOL "" FORCE)

set(SPDLOG_BUILD_PIC ON CACHE BOOL "" FORCE)

# If spdlog builds/uses bundled fmt, ensure it is PIC as well

# (Some setups use FMT_* options; harmless if ignored)

set(FMT_DOC OFF CACHE BOOL "" FORCE)

set(FMT_TEST OFF CACHE BOOL "" FORCE)

set(FMT_INSTALL OFF CACHE BOOL "" FORCE)

set(CMAKE_POSITION_INDEPENDENT_CODE ON CACHE BOOL "" FORCE)

FetchContent_Declare(

spdlog

GIT_REPOSITORY https://github.com/gabime/spdlog.git

GIT_TAG v1.17.0

)

FetchContent_MakeAvailable(spdlog)

endif()

else()

find_package(spdlog REQUIRED CONFIG)

endif()

add_library(depthlog INTERFACE)

add_library(depthlog::depthlog ALIAS depthlog)

target_include_directories(depthlog INTERFACE

$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>

$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>

)

target_link_libraries(depthlog INTERFACE

$<BUILD_INTERFACE:spdlog::spdlog>

$<INSTALL_INTERFACE:spdlog::spdlog>

)

# DEPTHLOG_ENABLE & Debug mode -> trace

# DEPTHLOG_ENABLE & non-Debug mode -> info

# DEPTHLOG_ENABLE off -> off

target_compile_definitions(depthlog INTERFACE

$<$<AND:$<BOOL:${DEPTHLOG_ENABLE}>,$<CONFIG:Debug>>:SPDLOG_ACTIVE_LEVEL=SPDLOG_LEVEL_TRACE>

$<$<AND:$<BOOL:${DEPTHLOG_ENABLE}>,$<NOT:$<CONFIG:Debug>>>:SPDLOG_ACTIVE_LEVEL=SPDLOG_LEVEL_INFO>

$<$<NOT:$<BOOL:${DEPTHLOG_ENABLE}>>:SPDLOG_ACTIVE_LEVEL=SPDLOG_LEVEL_OFF>

)

target_compile_features(depthlog INTERFACE cxx_std_17)