From 57ec87d38daa79b7f464a93468e116aecdcb104c Mon Sep 17 00:00:00 2001
From: An Tao <antao2002@gmail.com>
Date: Thu, 9 Mar 2023 00:16:21 +0800
Subject: [PATCH] Add an option in CMakeLists.txt to set how to use trantor
 (#1520)

---
 CMakeLists.txt | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index eb8a266e..5bcb5363 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,6 +19,7 @@ option(COZ_PROFILING "Use coz for profiling" OFF)
 option(BUILD_SHARED_LIBS "Build drogon as a shared lib" OFF)
 option(BUILD_DOC "Build Doxygen documentation" OFF)
 option(BUILD_BROTLI "Build Brotli" ON)
+option(USE_SUBMODULE "Use trantor as a submodule" ON)
 
 include(CMakeDependentOption)
 CMAKE_DEPENDENT_OPTION(BUILD_POSTGRESQL "Build with postgresql support" ON "BUILD_ORM" OFF)
@@ -99,14 +100,18 @@ elseif (HAS_ANY AND HAS_STRING_VIEW)
 else ()
     set(DROGON_CXX_STANDARD 14)
 endif ()
-
+if(USE_SUBMODULE)
+    target_include_directories(
+            ${PROJECT_NAME}
+            PUBLIC
+            $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/trantor>)
+endif()
 target_include_directories(
     ${PROJECT_NAME}
     PUBLIC $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/lib/inc>
     $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/orm_lib/inc>
     $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/nosql_lib/redis/inc>
     $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}>
-    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/trantor>
     $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/exports>
     $<INSTALL_INTERFACE:${INSTALL_INCLUDE_DIR}>)
 
@@ -116,9 +121,13 @@ if (WIN32)
         PRIVATE $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/third_party/mman-win32>)
 endif (WIN32)
 
+if(USE_SUBMODULE)
 add_subdirectory(trantor)
-
 target_link_libraries(${PROJECT_NAME} PUBLIC trantor)
+else()
+find_package(Trantor CONFIG REQUIRED)
+target_link_libraries(${PROJECT_NAME} PUBLIC Trantor::Trantor)
+endif()
 
 if(${CMAKE_SYSTEM_NAME} STREQUAL "Haiku")
     target_link_libraries(${PROJECT_NAME} PRIVATE network)