Initial community commit

Src/external_dependencies/openmpt-trunk/include/premake/website/docs/compileas.md

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+compileas
+
+```lua
+compileas "value"
+```
+
+### Parameters ###
+
+`value` one of:
+* `Default` - Compile based on file extensions that have been built into premake.
+* `C` - Compile as a C source file.
+* `C++` - Compile as a C++ source file.
+* `Objective-C` - Compile as an Objective-C source file.
+* `Objective-C++` - Compile as an Objective-C++ source file.
+* `Module` - Needs documentation
+* `ModulePartition` - Needs documentation
+* `HeaderUnit` - Needs documentation
+
+### Applies To ###
+
+The `workspace`, `project` or `file` scope.
+
+### Availability ###
+
+Premake 5.0.0 alpha 13 or later.
+
+### Examples ###
+
+```lua
+filter { "files:**.c" }
+    compileas "C++"
+```
+