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cmake: Add -A option to specify a generator platform

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Define the 'cmake -A' option to set CMAKE_GENERATOR_PLATFORM
without having to spell out the whole variable name.  We choose
the name '-A' for "platform" because '-P' is already taken, and
in the common use case the "platform" is actually an architecture
(e.g. x64).

Teach the RunCMake test infrastructure to use -A to pass the generator
platform.  Extend the RunCMake.GeneratorPlatform test with a case to
verify that the -A option cannot be repeated.
This commit is contained in:
Brad King
2014-09-12 09:55:06 -04:00
parent 09c8ad9943
commit eb7d815649
10 changed files with 49 additions and 2 deletions
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Help/variable/CMAKE_GENERATOR_PLATFORM.rst
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@@ -5,6 +5,8 @@ Generator-specific target platform name specified by user.
Some CMake generators support a target platform name to be given
to the native build system to choose a compiler toolchain.
If the user specifies a toolset name (e.g. via the cmake -A option)
the value will be available in this variable.
The value of this variable should never be modified by project code.
A toolchain file specified by the :variable:`CMAKE_TOOLCHAIN_FILE`