[cmake-developers] [CMake 0015245]: Add support for LTO

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://www.cmake.org/Bug/view.php?id=15245 
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Reported By:                Ilya
Assigned To:                
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Project:                    CMake
Issue ID:                   15245
Category:                   CMake
Reproducibility:            always
Severity:                   feature
Priority:                   normal
Status:                     new
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Date Submitted:             2014-11-11 20:54 EST
Last Modified:              2014-11-11 20:54 EST
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Summary:                    Add support for LTO
Description: 
When compiling both with LTO and debugging symbols enabled (at least in clang)
one must supply the -object_path_lto option:

-object_path_lto filename
    When performing Link Time Optimization (LTO) and a temporary mach-o object
file is needed,
    if this option is used, the temporary file will be stored at the specified
path and remain after
    the link is complete.  Without the option, the linker picks a path and
deletes the object file before
    the linker tool completes, thus tools such as the debugger or dsymutil will
not be able
    to access the DWARF debug info in the temporary object file.


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Issue History 
Date Modified    Username       Field                    Change               
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2014-11-11 20:54 Ilya           New Issue                                    
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