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-rw-r--r--Tests/CMakeInstall.cmake13
1 files changed, 12 insertions, 1 deletions
diff --git a/Tests/CMakeInstall.cmake b/Tests/CMakeInstall.cmake
index fda8c54..d9d85f7 100644
--- a/Tests/CMakeInstall.cmake
+++ b/Tests/CMakeInstall.cmake
@@ -14,7 +14,18 @@ if(CMake_TEST_INSTALL)
set(CMake_TEST_INSTALL_PREFIX ${CMake_BINARY_DIR}/Tests/CMakeInstall)
set(CMAKE_INSTALL_PREFIX "${CMake_TEST_INSTALL_PREFIX}")
- if(CMAKE_CONFIGURATION_TYPES)
+ # 3.9 or later provides a definitive answer to whether we are multi-config
+ # through a global property. Prior to 3.9, CMAKE_CONFIGURATION_TYPES being set
+ # is assumed to mean multi-config, but developers might modify it so it is
+ # technically not as reliable.
+ if(NOT CMAKE_VERSION VERSION_LESS 3.9)
+ get_property(_isMultiConfig GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
+ elseif(CMAKE_CONFIGURATION_TYPES)
+ set(_isMultiConfig True)
+ else()
+ set(_isMultiConfig False)
+ endif()
+ if(_isMultiConfig)
# There are multiple configurations. Make sure the tested
# configuration is the one that is installed.
set(CMake_TEST_INSTALL_CONFIG --config $<CONFIGURATION>)