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-rw-r--r--Help/variable/CMAKE_GENERATOR_PLATFORM.rst9
1 files changed, 8 insertions, 1 deletions
diff --git a/Help/variable/CMAKE_GENERATOR_PLATFORM.rst b/Help/variable/CMAKE_GENERATOR_PLATFORM.rst
index a5c284a..161ef20 100644
--- a/Help/variable/CMAKE_GENERATOR_PLATFORM.rst
+++ b/Help/variable/CMAKE_GENERATOR_PLATFORM.rst
@@ -1,7 +1,7 @@
CMAKE_GENERATOR_PLATFORM
------------------------
-Generator-specific target platform name specified by user.
+Generator-specific target platform specification provided by user.
Some CMake generators support a target platform name to be given
to the native build system to choose a compiler toolchain.
@@ -13,3 +13,10 @@ A toolchain file specified by the :variable:`CMAKE_TOOLCHAIN_FILE`
variable may initialize ``CMAKE_GENERATOR_PLATFORM``. Once a given
build tree has been initialized with a particular value for this
variable, changing the value has undefined behavior.
+
+Platform specification is supported only on specific generators:
+
+* For :ref:`Visual Studio Generators` with VS 2005 and above this
+ specifies the target architecture.
+
+See native build system documentation for allowed platform names.