[PATCH] D121589: [C++20][Modules][Driver][HU 2/N] Add fmodule-header, fmodule-header=
Iain Sandoe via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Mon Mar 14 04:34:33 PDT 2022
iains created this revision.
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These command-line flags are alternates to providing the -x
c++-*-header indicators that we are building a header unit.
Act on fmodule-header= for headers on the c/l:
If we have x.hh -fmodule-header, then we should treat that header
as a header unit input (equivalent to -xc++-header-unit-header x.hh).
Likewise, for fmodule-header={user,system} the source should be now
recognised as a header unit input (since this can affect the job list
that we need).
It's not practical to recognise a header without any suffix so
-fmodule-header=system foo isn't going to happen. Although
-fmodule-header=system foo.hh will work OK. However we can make it
work if the user indicates that the item without a suffix is a valid
header. (so -fmodule-header=system -xc++-header vector)
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D121589
Files:
clang/include/clang/Driver/Driver.h
clang/include/clang/Driver/Options.td
clang/lib/Driver/Driver.cpp
clang/test/Driver/cxx20-header-units-02.cpp
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