Modernize cmake files

Use FILE_SET HEADERS for simplify installation

Set VERIFY_INTERFACE_HEADER_SETS property

Prevent use of include(CTest)

Prepare CPack to esay distribution

Add all_verify_interface_header_sets to CI builds

Prevent in-source builds

Ignore cmake configure trash

Author: ClausKlein

.github/workflows/ci_tests.yml

@@ -82,15 +82,15 @@ jobs:
       - name: Build Release
         run: |
           cmake --build build --config Release --verbose
-          # TODO: cmake --build build --config Release --target all_verify_interface_header_sets
+          cmake --build build --config Release --target all_verify_interface_header_sets
           cmake --install build --config Release --prefix /tmp/beman.inplace_vector
           find /tmp/beman.inplace_vector -type f
       - name: Test Release
         run: ctest --test-dir build --build-config Release
       - name: Build Debug
         run: |
           cmake --build build --config Debug --verbose
-          # TODO: cmake --build build --config Debug --target all_verify_interface_header_sets
+          cmake --build build --config Debug --target all_verify_interface_header_sets
           cmake --install build --config Debug --prefix /tmp/beman.inplace_vector
           find /tmp/beman.inplace_vector -type f
       - name: Test Debug

.gitignore

@@ -1,3 +1,5 @@
 /build
 /out
 CMakeUserPresets.json
+CMakeCache.txt
+CMakeFiles/

CMakeLists.txt

@@ -3,7 +3,9 @@
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 # cmake-format: on
 
-cmake_minimum_required(VERSION 3.23)
+set(CMAKE_SKIP_TEST_ALL_DEPENDENCY FALSE)
+
+cmake_minimum_required(VERSION 3.25...3.31)
 
 project(
     beman.inplace_vector
@@ -13,6 +15,10 @@ project(
     LANGUAGES CXX
 )
 
+if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})
+    message(FATAL_ERROR "In-source builds are not allowed!")
+endif()
+
 # [CMAKE.SKIP_EXAMPLES]
 option(
     BEMAN_EXEMPLAR_BUILD_EXAMPLES
@@ -27,38 +33,49 @@ option(
     ${PROJECT_IS_TOP_LEVEL}
 )
 
+set(CPACK_GENERATOR TGZ)
+
+# includes
 include(GNUInstallDirs)
+include(CPack)
 
 add_library(beman.inplace_vector INTERFACE)
 # [CMAKE.LIBRARY_ALIAS]
 add_library(beman::inplace_vector ALIAS beman.inplace_vector)
 
-target_include_directories(
+target_sources(
+    beman.inplace_vector
+    PUBLIC
+        FILE_SET inplace_vector_public_headers
+        TYPE HEADERS
+        BASE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/include
+        FILES
+            "${CMAKE_CURRENT_SOURCE_DIR}/include/beman/inplace_vector/inplace_vector.hpp"
+)
+set_target_properties(
+    beman.inplace_vector
+    PROPERTIES VERIFY_INTERFACE_HEADER_SETS ON
+)
+target_compile_features(
     beman.inplace_vector
     INTERFACE
-        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
-        $<INSTALL_INTERFACE:include>
+        "$<$<COMPILE_FEATURES:cxx_std_23>:cxx_std_23>"
+        "$<$<NOT:$<COMPILE_FEATURES:cxx_std_23>>:cxx_std_20>"
 )
 
+set(TARGET_PACKAGE_NAME ${PROJECT_NAME}-config)
+set(TARGETS_EXPORT_NAME ${PROJECT_NAME}-targets)
+set(INSTALL_CONFIGDIR ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME})
+
 # Install the InplaceVector library to the appropriate destination
 install(
     TARGETS beman.inplace_vector
     EXPORT ${TARGETS_EXPORT_NAME}
-    DESTINATION
-    ${CMAKE_INSTALL_LIBDIR}
-)
-
-# Install the header files to the appropriate destination
-install(
-    DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/
-    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/${CMAKE_PROJECT_NAME}
-    FILES_MATCHING
-    PATTERN
-    "${CMAKE_CURRENT_SOURCE_DIR}/include/beman/inplace_vector/inplace_vector.hpp"
+    FILE_SET inplace_vector_public_headers
 )
 
 if(BEMAN_INPLACE_VECTOR_BUILD_TESTS)
-    include(CTest)
+    enable_testing()
     add_subdirectory(tests/beman/inplace_vector)
 endif()
 

include/beman/inplace_vector/inplace_vector.hpp

@@ -74,7 +74,7 @@ struct inplace_vector_destruct_base {
   inplace_vector_destruct_base(
       const inplace_vector_destruct_base
           &&other) noexcept(std::is_nothrow_move_constructible_v<T>)
-      : elems(), size_(other.size()) {}
+      : elems(), size_(other.size_) {}
 
   inplace_vector_destruct_base &
   operator=(const inplace_vector_destruct_base &other) noexcept(