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This was committed accidentally.
llvm-svn: 197389
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Instead, mark the module as unavailable so that clang errors as soon as
someone tries to build this module.
A better long-term strategy might be to not stat the header files at all
while reading the module map and instead read them only when the module
is being built (there is a corresponding FIXME in parseHeaderDecl()).
However, it seems non-trivial to get there and this would be a temporary
solution to unblock us.
Also changed the implementation to reuse the same DiagnosticsEngine as
otherwise warnings can't be enabled or disabled with command-line flags.
llvm-svn: 197388
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This patch changes two things:
a) Allow a header to be part of multiple modules. The reasoning is that
in existing codebases that have a module-like build system, the same
headers might be used in several build targets. Simple reasons might be
that they defined different classes that are declared in the same
header. Supporting a header as a part of multiple modules will make the
transistion easier for those cases. A later step in clang can then
determine whether the two modules are actually compatible and can be
merged and error out appropriately. The later check is similar to what
needs to be done for template specializations anyway.
b) Allow modules to be stored in a directory tree separate from the
headers they describe.
Review: http://llvm-reviews.chandlerc.com/D1951
llvm-svn: 193151
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With this option, arbitrarily named module map files can be specified
to be loaded as required for headers in the respective (sub)directories.
This, together with the extern module declaration allows for specifying
module maps in a modular fashion without the need for files called
"module.map".
Among other things, this allows a directory to contain two modules that
are completely independent of one another.
Review: http://llvm-reviews.chandlerc.com/D1697.
llvm-svn: 191284
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This patch is the first step to make module-map-files modular (instead
of requiring a single "module.map"-file per include directory). This
step adds a new "extern module" declaration that enables
module-map-files to reference one another along with a very basic
implementation.
The next steps are:
* Combine this with the use-declaration (from
http://llvm-reviews.chandlerc.com/D1546) in order to only load module
map files required for a specific compilation.
* Add an additional flag to start with a specific module-map-file (instead
of requiring there to be at least one "module.map").
Review: http://llvm-reviews.chandlerc.com/D1637
llvm-svn: 190497
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