Breaking change, rename 'cmake.minimum' to 'cmake.version' and make it optional

CMakeLists.txt

@@ -1,24 +1,26 @@
 # This file was generated automatically by cmkr.
 
-# Create a configure-time dependency on cmake.toml to improve IDE support
-configure_file(cmake.toml cmake.toml COPYONLY)
-
 cmake_minimum_required(VERSION 2.8...3.8)
 
-# Regenerate CMakeLists.txt file when necessary
+# Regenerate CMakeLists.txt automatically in the root project
 set(CMKR_ROOT_PROJECT OFF)
 if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
 	set(CMKR_ROOT_PROJECT ON)
 
+	# Bootstrap cmkr
 	include(cmkr.cmake OPTIONAL RESULT_VARIABLE CMKR_INCLUDE_RESULT)
 	if(CMKR_INCLUDE_RESULT)
 		cmkr()
 	endif()
 
-endif()
-
 	# Enable folder support
 	set_property(GLOBAL PROPERTY USE_FOLDERS ON)
+endif()
+
+# Create a configure-time dependency on cmake.toml to improve IDE support
+if(CMKR_ROOT_PROJECT)
+	configure_file(cmake.toml cmake.toml COPYONLY)
+endif()
 
 # Hack to hide a warning during cmkr bootstrapping on Windows
 if(CMAKE_BUILD_TYPE)
@@ -34,6 +36,7 @@ project(cmkr
 		"CMakeLists generator from TOML"
 )
 
+# third_party
 set(CMKR_CMAKE_FOLDER ${CMAKE_FOLDER})
 if(CMAKE_FOLDER)
 	set(CMAKE_FOLDER "${CMAKE_FOLDER}/third_party")

cmake.toml

@@ -1,5 +1,5 @@
 [cmake]
-minimum = "2.8...3.8"
+version = "2.8...3.8"
 
 [project]
 cmake-before = """

include/literals.h

@@ -11,7 +11,7 @@ int %s() {
 
 static const char *cmake_toml = R"lit(
 [cmake]
-minimum = "3.15"
+version = "3.15"
 # subdirs = []
 # build-dir = ""
 # cpp-flags = []

src/cmkrlib/cmake.cpp

@@ -58,8 +58,8 @@ CMake::CMake(const std::string &path, bool build) {
     } else {
         if (toml.contains("cmake")) {
             const auto &cmake = toml::find(toml, "cmake");
-            cmake_version = toml::find(cmake, "minimum").as_string();
+            cmake_version = toml::find(cmake, "version").as_string();
-            cmkr_include = toml::find_or(cmake, "cmkr-include", "cmkr.cmake");
+            cmkr_include = toml::find_or(cmake, "cmkr-include", cmkr_include);
             cppflags = optional_array(cmake, "cpp-flags");
             cflags = optional_array(cmake, "c-flags");
             linkflags = optional_array(cmake, "link-flags");

src/cmkrlib/cmake.hpp

@@ -79,8 +79,9 @@ struct Install {
 };
 
 struct CMake {
-    std::string cmake_version;
+    // This is the CMake version required to use all cmkr versions.
-    std::string cmkr_include;
+    std::string cmake_version = "3.15";
+    std::string cmkr_include = "cmkr.cmake";
     std::string build_dir = "build";
     std::string generator;
     std::string config;