smartbotic/cmake/FindPackages.cmake

# Find system packages

# Required packages
find_package(PkgConfig REQUIRED)

# Upstream smartbotic-database client library — provides target smartbotic::db-client
find_package(smartbotic-db-client CONFIG REQUIRED)
find_package(Threads REQUIRED)
find_package(OpenSSL REQUIRED)
find_package(CURL REQUIRED)
find_package(ZLIB REQUIRED)

# nlohmann-json
find_package(nlohmann_json 3.11 QUIET)
if(NOT nlohmann_json_FOUND)
    pkg_check_modules(nlohmann_json REQUIRED IMPORTED_TARGET nlohmann_json)
    add_library(nlohmann_json::nlohmann_json ALIAS PkgConfig::nlohmann_json)
endif()

# spdlog
find_package(spdlog QUIET)
if(NOT spdlog_FOUND)
    pkg_check_modules(spdlog REQUIRED IMPORTED_TARGET spdlog)
    add_library(spdlog::spdlog ALIAS PkgConfig::spdlog)
endif()

# gRPC and Protobuf
find_package(gRPC CONFIG QUIET)
if(NOT gRPC_FOUND)
    pkg_check_modules(grpc++ REQUIRED IMPORTED_TARGET grpc++)
    add_library(gRPC::grpc++ ALIAS PkgConfig::grpc++)
endif()

find_package(Protobuf REQUIRED)

# libwebsockets
pkg_check_modules(websockets REQUIRED IMPORTED_TARGET libwebsockets)
add_library(websockets ALIAS PkgConfig::websockets)

# MySQL/MariaDB client
pkg_check_modules(mariadb QUIET IMPORTED_TARGET libmariadb)
if(mariadb_FOUND)
    add_library(mysql_client ALIAS PkgConfig::mariadb)
    set(MYSQL_CLIENT_FOUND TRUE CACHE BOOL "MySQL client library found")
    message(STATUS "Found MariaDB client library")
else()
    pkg_check_modules(mysqlclient QUIET IMPORTED_TARGET mysqlclient)
    if(mysqlclient_FOUND)
        add_library(mysql_client ALIAS PkgConfig::mysqlclient)
        set(MYSQL_CLIENT_FOUND TRUE CACHE BOOL "MySQL client library found")
        message(STATUS "Found MySQL client library")
    else()
        # Not every distribution ships a .pc file for the client. Void, for one,
        # installs mysql_config and no pkg-config module at all - so both checks
        # above miss and the mysql-query node disappears from the build with only
        # a STATUS line to say so. A runner built that way registers a node list
        # silently missing mysql-query, and a workflow using it fails with
        # "unknown node type" on that host and works on every other.
        find_program(MYSQL_CONFIG_EXECUTABLE NAMES mariadb_config mysql_config)
        if(MYSQL_CONFIG_EXECUTABLE)
            execute_process(COMMAND ${MYSQL_CONFIG_EXECUTABLE} --cflags
                            OUTPUT_VARIABLE _mysql_cflags
                            OUTPUT_STRIP_TRAILING_WHITESPACE)
            execute_process(COMMAND ${MYSQL_CONFIG_EXECUTABLE} --libs
                            OUTPUT_VARIABLE _mysql_libs
                            OUTPUT_STRIP_TRAILING_WHITESPACE)
            separate_arguments(_mysql_cflags NATIVE_COMMAND "${_mysql_cflags}")
            separate_arguments(_mysql_libs NATIVE_COMMAND "${_mysql_libs}")
            add_library(mysql_client INTERFACE)
            target_compile_options(mysql_client INTERFACE ${_mysql_cflags})
            target_link_libraries(mysql_client INTERFACE ${_mysql_libs})
            set(MYSQL_CLIENT_FOUND TRUE CACHE BOOL "MySQL client library found")
            message(STATUS "Found MySQL client library via ${MYSQL_CONFIG_EXECUTABLE}")
        else()
            set(MYSQL_CLIENT_FOUND FALSE CACHE BOOL "MySQL client library found")
            message(STATUS "MySQL/MariaDB client library not found - MySQL node support disabled")
        endif()
    endif()
endif()

# PostgreSQL client (libpq)
pkg_check_modules(libpq QUIET IMPORTED_TARGET libpq)
if(libpq_FOUND)
    add_library(postgresql_client ALIAS PkgConfig::libpq)
    set(POSTGRESQL_CLIENT_FOUND TRUE CACHE BOOL "PostgreSQL client library found")
    message(STATUS "Found PostgreSQL client library (libpq)")
else()
    set(POSTGRESQL_CLIENT_FOUND FALSE CACHE BOOL "PostgreSQL client library found")
    message(STATUS "PostgreSQL client library not found - PostgreSQL node support disabled")
endif()

# Magick++ and libexif - the image node's engine.
#
# REQUIRED on purpose. Every optional dependency in this file that silently
# disabled a node has cost us a debugging session: a runner built without the
# MySQL client registers a node list quietly missing mysql-query, and the
# failure surfaces much later as an unknown node type on one host only. The
# image node is not optional to this deployment - 35photo2anime runs through it
# - so a build that cannot provide it should say so now rather than produce a
# runner that fails at the first photo.
pkg_check_modules(Magick REQUIRED IMPORTED_TARGET Magick++)
add_library(magick_client ALIAS PkgConfig::Magick)
message(STATUS "Found Magick++ ${Magick_VERSION}")

pkg_check_modules(exif REQUIRED IMPORTED_TARGET libexif)
add_library(exif_client ALIAS PkgConfig::exif)
message(STATUS "Found libexif ${exif_VERSION}")