[cfe-commits] [PATCH] Add Clang driver-support for directory-style precompiled headers
Tor Arne Vestbø
tor.arne.vestbo at nokia.com
Fri Oct 15 03:37:24 PDT 2010
Add Clang driver-support for directory-style precompiled headers
When passed -include foo we will check if foo.pch is a directory,
and if so try to look up a precompiled header matching the current
input language in that directory.
GCC will actually search every file in this directory, regardless of
naming, and choose the first one that matches the language.
Comments? Is it okey to do this kind of simple transparent
GCC-compatibility-trick or do we have to do what GCC does and actually
parse each header in that directory and check if it's valid for the
Side-note about the code: There's a condition where we "Ignore the PCH
if not first on command line and emit warning.", but we don't actually
ignore the argument, it's claimed and rendered as a normal -include. Is
this intentional? In my case I chose to actually ignore the whole
argument, does that makes sense?
include/clang/Basic/DiagnosticDriverKinds.td | 2 ++
lib/Driver/Tools.cpp | 10 ++++++++++
test/Driver/pch.c | 25
test/Driver/pth.c | 12 ++++++++++++
4 files changed, 49 insertions(+), 0 deletions(-)
create mode 100644 test/Driver/pch.c
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