CMakeLists.txt

cmake_minimum_required(VERSION 3.16)
project(vcon-c VERSION 0.1.0 LANGUAGES C)

set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED ON)
if(NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE Debug)
endif()
add_compile_options(-Wall -Wextra)

option(VCON_WITH_CURL "Build HTTP support (load_url/post_url) via libcurl" ON)
option(VCON_WITH_MEDIA "Build media metadata (image/pdf/ffprobe) support" OFF)

# Vendored cJSON (from VCONIC/vconic-core-vfun/deps).
add_library(cjson STATIC deps/cjson/cJSON.c)
target_include_directories(cjson PUBLIC deps/cjson)

set(VCON_SRC
  src/vcon.c
  src/vcon_b64.c
  src/vcon_time.c
  src/vcon_uuid.c
  src/vcon_validate.c
  src/vcon_hash.c
  src/vcon_builders.c
  src/vcon_jws.c
  src/vcon_ext.c
)
if(VCON_WITH_CURL)
  list(APPEND VCON_SRC src/vcon_http.c)
endif()
if(VCON_WITH_MEDIA)
  list(APPEND VCON_SRC src/vcon_media.c)
endif()

add_library(vcon STATIC ${VCON_SRC})
target_include_directories(vcon PUBLIC include deps/cjson)
target_link_libraries(vcon PUBLIC cjson)

find_package(Threads REQUIRED)
target_link_libraries(vcon PUBLIC Threads::Threads)

# OpenSSL: SHA-512/256 for content hashing + RSA/JWS.
find_package(OpenSSL REQUIRED)
target_link_libraries(vcon PUBLIC OpenSSL::Crypto)

if(VCON_WITH_CURL)
  find_package(CURL REQUIRED)
  target_link_libraries(vcon PUBLIC CURL::libcurl)
  target_compile_definitions(vcon PUBLIC VCON_WITH_CURL)
endif()
if(VCON_WITH_MEDIA)
  target_compile_definitions(vcon PUBLIC VCON_WITH_MEDIA)
endif()

enable_testing()
set(FIXTURES_DIR "${CMAKE_CURRENT_SOURCE_DIR}/tests/fixtures")
foreach(t test_roundtrip test_validate test_uuid test_hash test_builders
          test_sign test_ext test_media)
  add_executable(${t} tests/${t}.c)
  target_link_libraries(${t} PRIVATE vcon)
  target_include_directories(${t} PRIVATE src tests)
  target_compile_definitions(${t} PRIVATE FIXTURES_DIR="${FIXTURES_DIR}")
  add_test(NAME ${t} COMMAND ${t})
endforeach()

# Cross-language JWS helper (built, not a ctest; driven by tools/cross_verify.py).
add_executable(crosssign tools/crosssign.c)
target_link_libraries(crosssign PRIVATE vcon)
target_compile_definitions(crosssign PRIVATE FIXTURES_DIR="${FIXTURES_DIR}")

# --- install + pkg-config (phase 6) ------------------------------------
include(GNUInstallDirs)
install(TARGETS vcon cjson ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
install(FILES include/vcon.h deps/cjson/cJSON.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
set(VCON_PC_REQ "")
if(VCON_WITH_CURL)
  set(VCON_PC_REQ " libcurl")
endif()
configure_file(libvcon.pc.in libvcon.pc @ONLY)
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libvcon.pc
        DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)

# --- examples ----------------------------------------------------------
add_executable(call_recording examples/call_recording.c)
target_link_libraries(call_recording PRIVATE vcon)