Export: Disallow exported interface includes in src/build tree (#14592).

Allow directories in the source tree or build tree only if the
install tree is a subdirectory of the source tree or build tree,
as appropriate.

Re-use the test files in the RunCMake.include_directories test
to run in multiple scenarios.  Bump the required CMake version
in the test to 3.0 to ensure that the new policy warnings are
emitted correctly.

1 files changed, 125 insertions, 0 deletions

diff --git a/Tests/RunCMake/include_directories/RunCMakeTest.cmake b/Tests/RunCMake/include_directories/RunCMakeTest.cmake
index c00b924..434beb9 100644
--- a/Tests/RunCMake/include_directories/RunCMakeTest.cmake
+++ b/Tests/RunCMake/include_directories/RunCMakeTest.cmake
@@ -12,3 +12,128 @@ run_cmake(CMP0021)
 run_cmake(install_config)
 run_cmake(incomplete-genex)
 run_cmake(export-NOWARN)
+
+configure_file(
+  "${RunCMake_SOURCE_DIR}/CMakeLists.txt"
+  "${RunCMake_BINARY_DIR}/copy/CMakeLists.txt"
+  COPYONLY
+)
+configure_file(
+  "${RunCMake_SOURCE_DIR}/empty.cpp"
+  "${RunCMake_BINARY_DIR}/copy/empty.cpp"
+  COPYONLY
+)
+configure_file(
+  "${RunCMake_SOURCE_DIR}/SourceDirectoryInInterface.cmake"
+  "${RunCMake_BINARY_DIR}/copy/SourceDirectoryInInterface.cmake"
+  COPYONLY
+)
+set(RunCMake_TEST_OPTIONS "-DCMAKE_INSTALL_PREFIX=${RunCMake_BINARY_DIR}/copy/SourceDirectoryInInterface/prefix")
+set(RunCMake_TEST_FILE "${RunCMake_BINARY_DIR}/copy/SourceDirectoryInInterface")
+set(RunCMake_TEST_SOURCE_DIR "${RunCMake_BINARY_DIR}/copy")
+run_cmake(InstallInSrcDir)
+unset(RunCMake_TEST_SOURCE_DIR)
+unset(RunCMake_TEST_FILE)
+
+set(RunCMake_TEST_OPTIONS "-DCMAKE_INSTALL_PREFIX=${RunCMake_BINARY_DIR}/InstallInBinDir-build/prefix")
+set(RunCMake_TEST_BINARY_DIR "${RunCMake_BINARY_DIR}/InstallInBinDir-build")
+set(RunCMake_TEST_FILE "${RunCMake_SOURCE_DIR}/BinaryDirectoryInInterface")
+run_cmake(InstallInBinDir)
+unset(RunCMake_TEST_BINARY_DIR)
+unset(RunCMake_TEST_FILE)
+
+configure_file(
+  "${RunCMake_SOURCE_DIR}/CMakeLists.txt"
+  "${RunCMake_BINARY_DIR}/prefix/src/CMakeLists.txt"
+  COPYONLY
+)
+configure_file(
+  "${RunCMake_SOURCE_DIR}/empty.cpp"
+  "${RunCMake_BINARY_DIR}/prefix/src/empty.cpp"
+  COPYONLY
+)
+configure_file(
+  "${RunCMake_SOURCE_DIR}/SourceDirectoryInInterface.cmake"
+  "${RunCMake_BINARY_DIR}/prefix/src/SourceDirectoryInInterface.cmake"
+  COPYONLY
+)
+
+foreach(policyStatus "" NEW OLD)
+  if (NOT "${policyStatus}" STREQUAL "")
+    set(policyOption -DCMAKE_POLICY_DEFAULT_CMP0052=${policyStatus})
+  else()
+    unset(policyOption)
+    set(policyStatus WARN)
+  endif()
+  set(RunCMake_TEST_OPTIONS "-DCMAKE_INSTALL_PREFIX=${RunCMake_BINARY_DIR}/prefix" ${policyOption})
+  # Set the RunCMake_TEST_SOURCE_DIR here to the copy too. This is needed to run
+  # the test suite in-source properly.  Otherwise the install directory would be
+  # a subdirectory or the source directory, which is allowed and tested separately
+  # below.
+  set(RunCMake_TEST_SOURCE_DIR "${RunCMake_BINARY_DIR}/prefix/src")
+  set(RunCMake_TEST_BINARY_DIR "${RunCMake_BINARY_DIR}/prefix/BinInInstallPrefix-CMP0052-${policyStatus}-build")
+  set(RunCMake_TEST_FILE "${RunCMake_SOURCE_DIR}/BinaryDirectoryInInterface")
+  run_cmake(BinInInstallPrefix-CMP0052-${policyStatus})
+  unset(RunCMake_TEST_BINARY_DIR)
+  unset(RunCMake_TEST_FILE)
+
+  set(RunCMake_TEST_FILE "${RunCMake_BINARY_DIR}/prefix/src/SourceDirectoryInInterface")
+  run_cmake(SrcInInstallPrefix-CMP0052-${policyStatus})
+  unset(RunCMake_TEST_SOURCE_DIR)
+  unset(RunCMake_TEST_FILE)
+endforeach()
+
+set(RunCMake_TEST_OPTIONS "-DCMAKE_INSTALL_PREFIX=${RunCMake_BINARY_DIR}/InstallPrefixInInterface-build/prefix")
+run_cmake(InstallPrefixInInterface)
+
+configure_file(
+  "${RunCMake_SOURCE_DIR}/CMakeLists.txt"
+  "${RunCMake_BINARY_DIR}/installToSrc/CMakeLists.txt"
+  COPYONLY
+)
+configure_file(
+  "${RunCMake_SOURCE_DIR}/empty.cpp"
+  "${RunCMake_BINARY_DIR}/installToSrc/empty.cpp"
+  COPYONLY
+)
+configure_file(
+  "${RunCMake_SOURCE_DIR}/InstallPrefixInInterface.cmake"
+  "${RunCMake_BINARY_DIR}/installToSrc/InstallPrefixInInterface.cmake"
+  COPYONLY
+)
+set(RunCMake_TEST_OPTIONS "-DCMAKE_INSTALL_PREFIX=${RunCMake_BINARY_DIR}/installToSrc/InstallPrefixInInterface/prefix")
+set(RunCMake_TEST_FILE "${RunCMake_BINARY_DIR}/installToSrc/InstallPrefixInInterface")
+set(RunCMake_TEST_SOURCE_DIR "${RunCMake_BINARY_DIR}/installToSrc")
+run_cmake(InstallToPrefixInSrcDirOutOfSource)
+unset(RunCMake_TEST_SOURCE_DIR)
+unset(RunCMake_TEST_FILE)
+
+
+file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}/installToSrcInSrc")
+set(RunCMake_TEST_NO_CLEAN ON)
+
+configure_file(
+  "${RunCMake_SOURCE_DIR}/CMakeLists.txt"
+  "${RunCMake_BINARY_DIR}/installToSrcInSrc/CMakeLists.txt"
+  COPYONLY
+)
+configure_file(
+  "${RunCMake_SOURCE_DIR}/empty.cpp"
+  "${RunCMake_BINARY_DIR}/installToSrcInSrc/empty.cpp"
+  COPYONLY
+)
+configure_file(
+  "${RunCMake_SOURCE_DIR}/InstallPrefixInInterface.cmake"
+  "${RunCMake_BINARY_DIR}/installToSrcInSrc/InstallPrefixInInterface.cmake"
+  COPYONLY
+)
+
+set(RunCMake_TEST_OPTIONS "-DCMAKE_INSTALL_PREFIX=${RunCMake_BINARY_DIR}/installToSrcInSrc/InstallPrefixInInterface/prefix")
+set(RunCMake_TEST_FILE "${RunCMake_BINARY_DIR}/installToSrcInSrc/InstallPrefixInInterface")
+set(RunCMake_TEST_SOURCE_DIR "${RunCMake_BINARY_DIR}/installToSrcInSrc")
+set(RunCMake_TEST_BINARY_DIR "${RunCMake_BINARY_DIR}/installToSrcInSrc")
+run_cmake(InstallToPrefixInSrcDirInSource)
+unset(RunCMake_TEST_SOURCE_DIR)
+unset(RunCMake_TEST_BINARY_DIR)
+unset(RunCMake_TEST_FILE)
+unset(RunCMake_TEST_NO_CLEAN)