From c597fe35cc069b5bbfeecf8c75b5ef444a3fc81c Mon Sep 17 00:00:00 2001
From: Yixing Lao <yixing.lao@gmail.com>
Date: Sun, 17 Jan 2021 17:27:53 -0800
Subject: [PATCH] optional CXX11 ABI and MSVC runtime

---
 CMakeLists.txt              | 11 +++++++++++
 src/lib_json/CMakeLists.txt | 15 +++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 51b74fc..b27e7e5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,6 +22,10 @@ else()
     set(JSONCPP_CMAKE_POLICY_VERSION "${JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION}")
 endif()
 cmake_policy(VERSION ${JSONCPP_CMAKE_POLICY_VERSION})
+# For CMAKE_MSVC_RUNTIME_LIBRARY.
+if(POLICY CMP0091)
+    cmake_policy(SET CMP0091 NEW)
+endif()
 #
 # Now enumerate specific policies newer than JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION
 # that may need to be individually set to NEW/OLD
@@ -82,6 +86,8 @@ option(JSONCPP_WITH_STRICT_ISO "Issue all the warnings demanded by strict ISO C
 option(JSONCPP_WITH_PKGCONFIG_SUPPORT "Generate and install .pc files" ON)
 option(JSONCPP_WITH_CMAKE_PACKAGE "Generate and install cmake package files" ON)
 option(JSONCPP_WITH_EXAMPLE "Compile JsonCpp example" OFF)
+option(JSONCPP_USE_CXX11_ABI "Set -D_GLIBCXX_USE_CXX11_ABI=1." ON)
+option(JSONCPP_STATIC_WINDOWS_RUNTIME "Use static (MT/MTd) Windows runtime" OFF)
 option(BUILD_SHARED_LIBS "Build jsoncpp_lib as a shared library." ON)
 option(BUILD_STATIC_LIBS "Build jsoncpp_lib as a static library." ON)
 option(BUILD_OBJECT_LIBS "Build jsoncpp_lib as a object library." ON)
@@ -120,6 +126,11 @@ if(MSVC)
     # Only enabled in debug because some old versions of VS STL generate
     # unreachable code warning when compiled in release configuration.
     add_compile_options($<$<CONFIG:Debug>:/W4>)
+
+    # This needs cmake_policy (SET CMP0091 NEW).
+    if (JSONCPP_STATIC_WINDOWS_RUNTIME)
+        set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+    endif()
 endif()
 
 if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
diff --git a/src/lib_json/CMakeLists.txt b/src/lib_json/CMakeLists.txt
index af26476..11983d1 100644
--- a/src/lib_json/CMakeLists.txt
+++ b/src/lib_json/CMakeLists.txt
@@ -125,6 +125,11 @@ if(BUILD_SHARED_LIBS)
 
     set(SHARED_LIB ${PROJECT_NAME}_lib)
     add_library(${SHARED_LIB} SHARED ${PUBLIC_HEADERS} ${JSONCPP_SOURCES})
+    if(JSONCPP_USE_CXX11_ABI)
+        target_compile_definitions(${SHARED_LIB} PRIVATE _GLIBCXX_USE_CXX11_ABI=1)
+    else()
+        target_compile_definitions(${SHARED_LIB} PRIVATE _GLIBCXX_USE_CXX11_ABI=0)
+    endif()
     set_target_properties(${SHARED_LIB} PROPERTIES
         OUTPUT_NAME jsoncpp
         VERSION ${PROJECT_VERSION}
@@ -153,6 +158,11 @@ endif()
 if(BUILD_STATIC_LIBS)
     set(STATIC_LIB ${PROJECT_NAME}_static)
     add_library(${STATIC_LIB} STATIC ${PUBLIC_HEADERS} ${JSONCPP_SOURCES})
+    if(JSONCPP_USE_CXX11_ABI)
+        target_compile_definitions(${STATIC_LIB} PRIVATE _GLIBCXX_USE_CXX11_ABI=1)
+    else()
+        target_compile_definitions(${STATIC_LIB} PRIVATE _GLIBCXX_USE_CXX11_ABI=0)
+    endif()
 
     # avoid name clashes on windows as the shared import lib is alse named jsoncpp.lib
     if(NOT DEFINED STATIC_SUFFIX AND BUILD_SHARED_LIBS)
@@ -185,6 +195,11 @@ endif()
 if(BUILD_OBJECT_LIBS)
     set(OBJECT_LIB ${PROJECT_NAME}_object)
     add_library(${OBJECT_LIB} OBJECT ${PUBLIC_HEADERS} ${JSONCPP_SOURCES})
+    if(JSONCPP_USE_CXX11_ABI)
+        target_compile_definitions(${OBJECT_LIB} PRIVATE _GLIBCXX_USE_CXX11_ABI=1)
+    else()
+        target_compile_definitions(${OBJECT_LIB} PRIVATE _GLIBCXX_USE_CXX11_ABI=0)
+    endif()
 
     set_target_properties(${OBJECT_LIB} PROPERTIES
         OUTPUT_NAME jsoncpp
-- 
2.17.1