# ==============================================================================
# Find stb
# ==============================================================================
# This module fetches the stb single-file public domain libraries
# (stb_image_write.h for PNG writing, etc.).
#
# Targets provided:
#   stb::stb - Interface library (add #define STB_IMAGE_WRITE_IMPLEMENTATION
#              in exactly one .cpp before including "stb_image_write.h")
#
# Variables set:
#   stb_FOUND       - TRUE if stb is available
#   stb_INCLUDE_DIR - Include directories for stb
#   stb_VERSION     - Version of stb (commit)
# ==============================================================================

if (DEFINED _FINDSTB_INCLUDED)
    return()
endif()
set(_FINDSTB_INCLUDED TRUE)

# Pin to a recent stable commit
set(STB_VERSION "master")

message(STATUS "Fetching stb ${STB_VERSION}")

include(FetchContent)

FetchContent_Declare(
    stb
    GIT_REPOSITORY https://github.com/nothings/stb.git
    GIT_TAG        ${STB_VERSION}
)

FetchContent_MakeAvailable(stb)

add_library(stb INTERFACE)
target_include_directories(stb INTERFACE "${stb_SOURCE_DIR}")

add_library(stb::stb ALIAS stb)

set(stb_FOUND       TRUE)
set(stb_INCLUDE_DIR "${stb_SOURCE_DIR}")
set(stb_VERSION     "${STB_VERSION}")

# Mark as SYSTEM includes
set_target_properties(stb PROPERTIES
    INTERFACE_SYSTEM_INCLUDE_DIRECTORIES "${stb_SOURCE_DIR}"
)