project(): Add new CMAKE_PROJECT_TOP_LEVEL_INCLUDES file injection point

Fixes: #22685

12 files changed, 39 insertions, 0 deletions

diff --git a/Tests/RunCMake/project/CodeInjection-stdout.txt b/Tests/RunCMake/project/CodeInjection-stdout.txt
new file mode 100644
index 0000000..88ac966
--- /dev/null
+++ b/Tests/RunCMake/project/CodeInjection-stdout.txt
@@ -0,0 +1,10 @@
+(-- )?Included CMAKE_PROJECT_INCLUDE_BEFORE
+(-- )?Included CMAKE_TOOLCHAIN_FILE
+.*Included CMAKE_PROJECT_TOP_LEVEL_INCLUDES first file
+(-- )?Included CMAKE_PROJECT_TOP_LEVEL_INCLUDES second file
+(-- )?Included CMAKE_PROJECT_INCLUDE
+(-- )?Calling sub-project
+(-- )?Included CMAKE_PROJECT_INCLUDE_BEFORE
+(-- )?Included CMAKE_PROJECT_SubProj_INCLUDE_BEFORE
+(-- )?Included CMAKE_PROJECT_INCLUDE
+(-- )?Included CMAKE_PROJECT_SubProj_INCLUDE
diff --git a/Tests/RunCMake/project/CodeInjection.cmake b/Tests/RunCMake/project/CodeInjection.cmake
new file mode 100644
index 0000000..dcf56a1
--- /dev/null
+++ b/Tests/RunCMake/project/CodeInjection.cmake
@@ -0,0 +1 @@
+add_subdirectory(CodeInjection)
diff --git a/Tests/RunCMake/project/CodeInjection/CMakeLists.txt b/Tests/RunCMake/project/CodeInjection/CMakeLists.txt
new file mode 100644
index 0000000..8ee99d0
--- /dev/null
+++ b/Tests/RunCMake/project/CodeInjection/CMakeLists.txt
@@ -0,0 +1,2 @@
+message(STATUS "Calling sub-project")
+project(SubProj LANGUAGES NONE)
diff --git a/Tests/RunCMake/project/CodeInjection/cmake_project_include.cmake b/Tests/RunCMake/project/CodeInjection/cmake_project_include.cmake
new file mode 100644
index 0000000..f3f0a7e
--- /dev/null
+++ b/Tests/RunCMake/project/CodeInjection/cmake_project_include.cmake
@@ -0,0 +1 @@
+message(STATUS "Included CMAKE_PROJECT_INCLUDE")
diff --git a/Tests/RunCMake/project/CodeInjection/cmake_project_include_before.cmake b/Tests/RunCMake/project/CodeInjection/cmake_project_include_before.cmake
new file mode 100644
index 0000000..01d53c9
--- /dev/null
+++ b/Tests/RunCMake/project/CodeInjection/cmake_project_include_before.cmake
@@ -0,0 +1 @@
+message(STATUS "Included CMAKE_PROJECT_INCLUDE_BEFORE")
diff --git a/Tests/RunCMake/project/CodeInjection/cmake_project_subproj_include.cmake b/Tests/RunCMake/project/CodeInjection/cmake_project_subproj_include.cmake
new file mode 100644
index 0000000..d68de6a
--- /dev/null
+++ b/Tests/RunCMake/project/CodeInjection/cmake_project_subproj_include.cmake
@@ -0,0 +1 @@
+message(STATUS "Included CMAKE_PROJECT_SubProj_INCLUDE")
diff --git a/Tests/RunCMake/project/CodeInjection/cmake_project_subproj_include_before.cmake b/Tests/RunCMake/project/CodeInjection/cmake_project_subproj_include_before.cmake
new file mode 100644
index 0000000..ef3bfc0
--- /dev/null
+++ b/Tests/RunCMake/project/CodeInjection/cmake_project_subproj_include_before.cmake
@@ -0,0 +1 @@
+message(STATUS "Included CMAKE_PROJECT_SubProj_INCLUDE_BEFORE")
diff --git a/Tests/RunCMake/project/CodeInjection/cmake_project_top_level_includes_1.cmake b/Tests/RunCMake/project/CodeInjection/cmake_project_top_level_includes_1.cmake
new file mode 100644
index 0000000..73ad037
--- /dev/null
+++ b/Tests/RunCMake/project/CodeInjection/cmake_project_top_level_includes_1.cmake
@@ -0,0 +1 @@
+message(STATUS "Included CMAKE_PROJECT_TOP_LEVEL_INCLUDES first file")
diff --git a/Tests/RunCMake/project/CodeInjection/cmake_project_top_level_includes_2.cmake b/Tests/RunCMake/project/CodeInjection/cmake_project_top_level_includes_2.cmake
new file mode 100644
index 0000000..80f9705
--- /dev/null
+++ b/Tests/RunCMake/project/CodeInjection/cmake_project_top_level_includes_2.cmake
@@ -0,0 +1 @@
+message(STATUS "Included CMAKE_PROJECT_TOP_LEVEL_INCLUDES second file")
diff --git a/Tests/RunCMake/project/CodeInjection/initial_cache.cmake b/Tests/RunCMake/project/CodeInjection/initial_cache.cmake
new file mode 100644
index 0000000..6c8995b
--- /dev/null
+++ b/Tests/RunCMake/project/CodeInjection/initial_cache.cmake
@@ -0,0 +1,10 @@
+set(CMAKE_TOOLCHAIN_FILE                 "${CMAKE_CURRENT_LIST_DIR}/passthrough_toolchain_file.cmake" CACHE FILEPATH "")
+set(CMAKE_PROJECT_INCLUDE                "${CMAKE_CURRENT_LIST_DIR}/cmake_project_include.cmake" CACHE FILEPATH "")
+set(CMAKE_PROJECT_INCLUDE_BEFORE         "${CMAKE_CURRENT_LIST_DIR}/cmake_project_include_before.cmake" CACHE FILEPATH "")
+set(CMAKE_PROJECT_SubProj_INCLUDE        "${CMAKE_CURRENT_LIST_DIR}/cmake_project_subproj_include.cmake" CACHE FILEPATH "")
+set(CMAKE_PROJECT_SubProj_INCLUDE_BEFORE "${CMAKE_CURRENT_LIST_DIR}/cmake_project_subproj_include_before.cmake" CACHE FILEPATH "")
+set(CMAKE_PROJECT_TOP_LEVEL_INCLUDES
+  "${CMAKE_CURRENT_LIST_DIR}/cmake_project_top_level_includes_1.cmake"
+  "${CMAKE_CURRENT_LIST_DIR}/cmake_project_top_level_includes_2.cmake"
+  CACHE STRING ""
+)
diff --git a/Tests/RunCMake/project/CodeInjection/passthrough_toolchain_file.cmake b/Tests/RunCMake/project/CodeInjection/passthrough_toolchain_file.cmake
new file mode 100644
index 0000000..d045712
--- /dev/null
+++ b/Tests/RunCMake/project/CodeInjection/passthrough_toolchain_file.cmake
@@ -0,0 +1 @@
+message(STATUS "Included CMAKE_TOOLCHAIN_FILE")
diff --git a/Tests/RunCMake/project/RunCMakeTest.cmake b/Tests/RunCMake/project/RunCMakeTest.cmake
index d7dab12..945d9ed 100644
--- a/Tests/RunCMake/project/RunCMakeTest.cmake
+++ b/Tests/RunCMake/project/RunCMakeTest.cmake
@@ -1,5 +1,14 @@
 include(RunCMake)
 
+# Use an initial cache file to define the project() variables
+# to avoid long command lines. Also see the CMakeOnly test case
+# which tests some of the individual variables one at a time.
+# Here, we are focused on testing that the variables are all injected
+# at the expected points in the expected order.
+run_cmake_with_options(CodeInjection
+  -C "${CMAKE_CURRENT_LIST_DIR}/CodeInjection/initial_cache.cmake"
+)
+
 if(CMake_TEST_RESOURCES)
   run_cmake(ExplicitRC)
 endif()