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List:       cairo-bugs
Subject:    [cairo-bugs] [Bug 46299] New: Invalid .def file generated (breaks compilation on win32 using modern
From:       bugzilla-daemon () freedesktop ! org
Date:       2012-02-19 21:28:09
Message-ID: bug-46299-4039 () http ! bugs ! freedesktop ! org/
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https://bugs.freedesktop.org/show_bug.cgi?id=46299

             Bug #: 46299
           Summary: Invalid .def file generated (breaks compilation on
                    win32 using modern binutils)
    Classification: Unclassified
           Product: cairo
           Version: 1.10.3
          Platform: Other
        OS/Version: Windows (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: general
        AssignedTo: cworth@cworth.org
        ReportedBy: erik-freedesktop-bugzilla@vanpienbroek.nl
         QAContact: cairo-bugs@cairographics.org


Recent versions of binutils (feb 2012) got more strict with regards to the processing \
of .def files. At the moment cairo automatically generates a .def file like this:
EXPORTS
cairo_append_path
cairo_arc
cairo_arc_negative
<snip>
LIBRARY libcairo-2.dll

This used to work in older versions of binutils, but according to Kai Tietz (one of \
the mingw-w64 developers) this .def file is incorrect. The documentation at \
http://msdn.microsoft.com/en-us/library/d91k01sh%28v=vs.80%29.aspx states that .def \
files must start with the LIBRARY statement following by the EXPORTS statement. 

I'm not entirely sure how this can be fixed in cairo properly. There are two places \
where .def files are generated. The first is in src/Makefile.am (where the EXPORTS \
and LIBRARY statements are also added). However, the output from this script is then \
also processed by the script src/check-def.sh. This check-def.sh script adds another \
EXPORTS line and contains a hack to retrieve the last line (that would be the LIBRARY \
line) of the initial .def file.

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