Export a Config.cmake file for FindPackage

Add back FindPackage support.

Author: steve-downey

CMakeLists.txt

@@ -59,6 +59,24 @@ add_subdirectory(include/beman/optional26)
 
 add_subdirectory(examples)
 
+
+include(CMakePackageConfigHelpers)
+
+# This will be used to replace @PACKAGE_cmakeModulesDir@
+set(cmakeModulesDir cmake/beman)
+configure_package_config_file(
+  cmake/Config.cmake.in BemanOptional26Config.cmake
+  INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/beman/optional26/
+  PATH_VARS cmakeModulesDir
+  NO_SET_AND_CHECK_MACRO
+  NO_CHECK_REQUIRED_COMPONENTS_MACRO
+)
+
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/BemanOptional26Config.cmake
+  DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/beman/optional26/
+  COMPONENT beman_optional26_development
+)
+
 # Coverage
 configure_file("cmake/gcovr.cfg.in" gcovr.cfg @ONLY)
 

cmake/Config.cmake.in

@@ -1,4 +1,4 @@
-# cmake/Config.cmake.in -*-makefile-*-
+# cmake/Config.cmake.in -*-cmake-*-
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
 @PACKAGE_INIT@