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[Support] Lazy load of dbghlp.dll on Windows

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This patch changes linkage with dbghlp.dll for clang from static (at load time)
to on demand (at the first use of required functions). Clang uses dbghlp.dll
only in minor use-cases. First of all in case of crash and in case of plugin load.
The dbghlp.dll library can be absent on system. In this case clang will fail
to load. With lazy load of dbghlp.dll clang can work even if dbghlp.dll
is not available.

Differential Revision: http://reviews.llvm.org/D10737



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241271 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Leny Kholodov
2015-07-02 14:34:57 +00:00
parent 7edba9eec3
commit 479dc2c0fe
8 changed files with 55 additions and 50 deletions
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3
include/llvm/Config/config.h.cmake
View File

@@ -125,9 +125,6 @@
/* Define if you have the libdl library or equivalent. */
#cmakedefine HAVE_LIBDL ${HAVE_LIBDL}
/* Define to 1 if you have the `imagehlp' library (-limagehlp). */
#cmakedefine HAVE_LIBIMAGEHLP ${HAVE_LIBIMAGEHLP}
/* Define to 1 if you have the `m' library (-lm). */
#undef HAVE_LIBM

3
include/llvm/Config/config.h.in
View File

@@ -137,9 +137,6 @@
/* Define if libedit is available on this platform. */
#undef HAVE_LIBEDIT
/* Define to 1 if you have the `imagehlp' library (-limagehlp). */
#undef HAVE_LIBIMAGEHLP
/* Define to 1 if you have the `m' library (-lm). */
#undef HAVE_LIBM