From 475c8d34b7db9380dcf4288e46be17a23ac80667 Mon Sep 17 00:00:00 2001
From: Florian Albrechtskirchinger <falbrechtskirchinger@gmail.com>
Date: Thu, 22 Sep 2022 12:02:35 +0200
Subject: [PATCH] Move CMake options into cmake/json_opts.cmake

---
 CMakeLists.txt        | 18 +------------
 cmake/json_opts.cmake | 63 +++++++++++++++++++++++++++++++++++++++++++
 tests/CMakeLists.txt  |  6 -----
 3 files changed, 64 insertions(+), 23 deletions(-)
 create mode 100644 cmake/json_opts.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 71fb12242..1d689298b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -34,23 +34,7 @@ include(ExternalProject)
 ##
 ## OPTIONS
 ##
-
-# VERSION_GREATER_EQUAL is not available in CMake 3.1
-if(${JSON_MAIN_PROJECT} AND (${CMAKE_VERSION} VERSION_EQUAL 3.13 OR ${CMAKE_VERSION} VERSION_GREATER 3.13))
-    set(JSON_BuildTests_INIT ON)
-else()
-    set(JSON_BuildTests_INIT OFF)
-endif()
-option(JSON_BuildTests                     "Build the unit tests when BUILD_TESTING is enabled." ${JSON_BuildTests_INIT})
-option(JSON_CI                             "Enable CI build targets." OFF)
-option(JSON_Diagnostics                    "Use extended diagnostic messages." OFF)
-option(JSON_GlobalUDLs                     "Place use-defined string literals in the global namespace." ON)
-option(JSON_ImplicitConversions            "Enable implicit conversions." ON)
-option(JSON_DisableEnumSerialization       "Disable default integer enum serialization." OFF)
-option(JSON_LegacyDiscardedValueComparison "Enable legacy discarded value comparison." OFF)
-option(JSON_Install                        "Install CMake targets during install step." ${JSON_MAIN_PROJECT})
-option(JSON_MultipleHeaders                "Use non-amalgamated version of the library." ON)
-option(JSON_SystemInclude                  "Include as system headers (skip for clang-tidy)." OFF)
+include (json_opts)
 
 if (JSON_CI)
     include(ci)
diff --git a/cmake/json_opts.cmake b/cmake/json_opts.cmake
new file mode 100644
index 000000000..ea5e59238
--- /dev/null
+++ b/cmake/json_opts.cmake
@@ -0,0 +1,63 @@
+include(CMakeDependentOption)
+
+#############################################################################
+# test options
+#############################################################################
+
+# VERSION_GREATER_EQUAL is not available in CMake 3.1
+if(${JSON_MAIN_PROJECT} AND (${CMAKE_VERSION} VERSION_EQUAL 3.13 OR ${CMAKE_VERSION} VERSION_GREATER 3.13))
+    set(JSON_BuildTests_INIT ON)
+else()
+    set(JSON_BuildTests_INIT OFF)
+endif()
+option(JSON_BuildTests "Build the unit tests when BUILD_TESTING is enabled." ${JSON_BuildTests_INIT})
+set(JSON_32bitTest AUTO CACHE STRING "Enable the 32bit unit test (ON/OFF/AUTO/ONLY).")
+cmake_dependent_option(JSON_FastTests "Skip expensive/slow tests." OFF "JSON_BuildTests" OFF)
+cmake_dependent_option(JSON_Valgrind "Execute test suite with Valgrind." OFF "JSON_BuildTests" OFF)
+
+set(JSON_TestStandards "" CACHE STRING "The list of standards to test explicitly.")
+
+#############################################################################
+# CI options
+#############################################################################
+
+option(JSON_CI "Enable CI build targets." OFF)
+
+#############################################################################
+# build & install options
+#############################################################################
+
+option(JSON_Diagnostics "Use extended diagnostic messages." OFF)
+option(JSON_DisableEnumSerialization "Disable default integer enum serialization." OFF)
+option(JSON_GlobalUDLs "Place user-defined string literals in the global namespace." ON)
+option(JSON_ImplicitConversions "Enable implicit conversions." ON)
+option(JSON_LegacyDiscardedValueComparison "Enable legacy discarded value comparison." OFF)
+
+option(JSON_Install "Install CMake targets during install step." ${JSON_MAIN_PROJECT})
+option(JSON_MultipleHeaders "Use non-amalgamated version of the library." ON)
+option(JSON_SystemInclude "Include as system headers (skip for clang-tidy)." OFF)
+
+#############################################################################
+# configuration
+#############################################################################
+
+set(NLOHMANN_JSON_TARGET_NAME                ${PROJECT_NAME})
+set(NLOHMANN_JSON_CONFIG_INSTALL_DIR         "${CMAKE_INSTALL_DATADIR}/cmake/${PROJECT_NAME}" CACHE INTERNAL "")
+set(NLOHMANN_JSON_INCLUDE_INSTALL_DIR        "${CMAKE_INSTALL_INCLUDEDIR}")
+set(NLOHMANN_JSON_TARGETS_EXPORT_NAME        "${PROJECT_NAME}Targets")
+set(NLOHMANN_JSON_CMAKE_CONFIG_TEMPLATE      "cmake/config.cmake.in")
+set(NLOHMANN_JSON_CMAKE_CONFIG_DIR           "${CMAKE_CURRENT_BINARY_DIR}")
+set(NLOHMANN_JSON_CMAKE_VERSION_CONFIG_FILE  "${NLOHMANN_JSON_CMAKE_CONFIG_DIR}/${PROJECT_NAME}ConfigVersion.cmake")
+set(NLOHMANN_JSON_CMAKE_PROJECT_CONFIG_FILE  "${NLOHMANN_JSON_CMAKE_CONFIG_DIR}/${PROJECT_NAME}Config.cmake")
+set(NLOHMANN_JSON_CMAKE_PROJECT_TARGETS_FILE "${NLOHMANN_JSON_CMAKE_CONFIG_DIR}/${PROJECT_NAME}Targets.cmake")
+set(NLOHMANN_JSON_PKGCONFIG_INSTALL_DIR      "${CMAKE_INSTALL_DATADIR}/pkgconfig")
+
+if (JSON_MultipleHeaders)
+    set(NLOHMANN_JSON_INCLUDE_BUILD_DIR "${PROJECT_SOURCE_DIR}/include/")
+else()
+    set(NLOHMANN_JSON_INCLUDE_BUILD_DIR "${PROJECT_SOURCE_DIR}/single_include/")
+endif()
+
+if (JSON_SystemInclude)
+    set(NLOHMANN_JSON_SYSTEM_INCLUDE "SYSTEM")
+endif()
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 1afb000ae..99f0d3efd 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -1,11 +1,5 @@
 cmake_minimum_required(VERSION 3.13)
 
-option(JSON_Valgrind    "Execute test suite with Valgrind." OFF)
-option(JSON_FastTests   "Skip expensive/slow tests." OFF)
-
-set(JSON_32bitTest     AUTO CACHE STRING "Enable the 32bit unit test (ON/OFF/AUTO/ONLY).")
-set(JSON_TestStandards "" CACHE STRING "The list of standards to test explicitly.")
-
 include(test)
 
 #############################################################################