aFunlang/cmake/deps.cmake

include_guard(GLOBAL)
include(deps_install)

set(PRINT_DEPS_INFO ON CACHE BOOL "Print deps info.")  # 默认设定为 ON
set(_print ${PRINT_DEPS_INFO})

set(DEPS_FOUND TRUE)

if (WIN32 AND NOT CYGWIN)  # cygwin 不依赖 dl
    find_package(dlfcn-win32 QUIET)
    if (NOT dlfcn-win32_FOUND)
        set(DEPS_FOUND FALSE)
        message(WARNING "dlfcn-win32 not found. But you can try install it by the cmake program.")
    else()
        set(dlfcn_lib dlfcn-win32::dl)
        wi_install_import(TARGETS dlfcn-win32::dl)
    endif()
else()
    set(DLFCN_AUTO_FIND FALSE CACHE BOOL "dlfcn auto find by compiler.")
    set(DLFCN_ROOT "" CACHE STRING "The directory of dl.")
    set(dlfcn_root ${DLFCN_ROOT})
    if (dlfcn_root)
        find_library(dlfcn_path dl HINTS ${dlfcn_root})
    else()
        find_library(dlfcn_path dl)
    endif()

    if (NOT dlfcn_path)
	if (DLFCN_AUTO_FIND)
	    set(dlfcn_path "")
	else()
           set(DEPS_FOUND FALSE)
           message(SEND_ERROR "dlfcn not found.")
	endif() 
   endif()

    unset(dlfcn_root)
    set(dlfcn_lib ${dlfcn_path})
endif()

find_package(PCRE2 COMPONENTS 8BIT QUIET)
if (NOT PCRE2_FOUND)
    set(DEPS_FOUND FALSE)
    message(WARNING "PCRE2 8BIT not found. But you can try install it by the cmake program.")
else()
    wi_install_import(TARGETS PCRE2::8BIT)
endif()

find_package(Threads QUIET)
if (NOT Threads_FOUND)
    set(DEPS_FOUND FALSE)
    message(SEND_ERROR "Threads library not found.")
else()
    wi_install_import(TARGETS Threads::Threads)
endif()