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authorDouglas Gregor <dgregor@apple.com>2012-02-02 18:42:48 +0000
committerDouglas Gregor <dgregor@apple.com>2012-02-02 18:42:48 +0000
commit2f04f1843ca0ffca13b8b0d4dadd1f50dffb38b8 (patch)
treef2efcb1a10ca694d4f0e08451848f0b2a13aa649 /lib/Frontend/CompilerInvocation.cpp
parent4f7dcdbdfc50a244c3f3ca66f15b0b39a56f8f64 (diff)
Back out my heinous hack that tricked the module generation mechanism
into using non-absolute system includes (<foo>)... ... and introduce another hack that is simultaneously more heineous and more effective. We whitelist Clang-supplied headers that augment or override system headers (such as float.h, stdarg.h, and tgmath.h). For these headers, Clang does not provide a module mapping. Instead, a system-supplied module map can refer to these headers in a system module, and Clang will look both in its own include directory and wherever the system-supplied module map suggests, then adds either or both headers. The end result is that Clang-supplied headers get merged into the system-supplied module for the C standard library. As a drive-by, fix up a few dependencies in the _Builtin_instrinsics module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149611 91177308-0d34-0410-b5e6-96231b3b80d8
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