Add missing DDCConfigVersion (#673)

* Add missing DDCConfigVersion with SameMinorVersion compatibility

* Review from cedricchevalier19

CMakeLists.txt

@@ -290,4 +290,18 @@ configure_package_config_file(
     INSTALL_DESTINATION lib/cmake/DDC
 )
 
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/DDCConfig.cmake DESTINATION lib/cmake/DDC)
+# We use SameMinorVersion until major version 1
+if(PROJECT_VERSION VERSION_GREATER_EQUAL 1)
+    message(FATAL_ERROR "DDC must switch COMPATIBILITY mode to SameMajorVersion")
+endif()
+write_basic_package_version_file(
+    ${CMAKE_CURRENT_BINARY_DIR}/DDCConfigVersion.cmake
+    COMPATIBILITY SameMinorVersion
+)
+
+install(
+    FILES
+        ${CMAKE_CURRENT_BINARY_DIR}/DDCConfig.cmake
+        ${CMAKE_CURRENT_BINARY_DIR}/DDCConfigVersion.cmake
+    DESTINATION lib/cmake/DDC
+)

install_test/CMakeLists.txt

@@ -5,7 +5,7 @@
 cmake_minimum_required(VERSION 3.22)
 project(test-installed-ddc LANGUAGES CXX)
 
-find_package(DDC REQUIRED COMPONENTS fft pdi splines)
+find_package(DDC 0.1 REQUIRED COMPONENTS fft pdi splines)
 
 message("DDC options:")
 message("DDC_BUILD_DOUBLE_PRECISION=${DDC_BUILD_DOUBLE_PRECISION}")