Bug 147114

Summary: [Win] Certain debug builds can take close to three hours to link
Product: WebKit Reporter: Brent Fulgham <bfulgham>
Component: WebKit Misc.Assignee: Brent Fulgham <bfulgham>
Status: RESOLVED FIXED    
Severity: Normal CC: bfulgham, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
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Patch thorton: review+

Description Brent Fulgham 2015-07-20 11:25:08 PDT 
The DebugSuffix target on our Windows build seems to trigger a bug in the MSVC 2013 linker that causes explosive link times (on the order of three hours).

It appears that this behavior is triggered by attempting to use the "/OPT:REF" and "/OPT:ICF" flags when building a debug target that is itself linking against other debug-targeted libraries. We do not encounter this on our release builds, or our debug target that does not reference debug support libraries.

Our standard Debug build has these turned off “/OPT:NOREF, /OPT:NOICF”, which I think makes more sense for debug builds and should also be used on our "DebugSuffix" target.
Comment 1 Brent Fulgham 2015-07-20 11:28:54 PDT 
<rdar://problem/21882777>
Comment 2 Brent Fulgham 2015-07-20 11:30:26 PDT 
Created attachment 257108 [details]
Patch
Comment 3 Brent Fulgham 2015-07-20 11:31:40 PDT 
Created attachment 257109 [details]
Patch
Comment 4 Brent Fulgham 2015-07-20 11:32:42 PDT 
Created attachment 257110 [details]
Patch
Comment 5 Tim Horton 2015-07-20 11:34:12 PDT 
Comment on attachment 257110 [details]
Patch

rs=me
Comment 6 Brent Fulgham 2015-07-20 11:52:56 PDT 
Committed r187027: <http://trac.webkit.org/changeset/187027>