Documentation Development GCC Tools Beat

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{{Documentation_closed_beat|http://docs.fedoraproject.org/release-notes/f13/en-US/html/sect-Release_Notes-The_GCC_Compiler_Collection.html}}
{{Admon/warning | Document is Final | The contents of this beat have been sent for translation for the GA version of the Release Notes.  Any additional changes to this beat will not appear until after the release of Fedora 13.  If you have zero-day changes, be sure to post a bug. }}
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== gcc ==
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''gcc'' has upgraded from 4.4.2 to 4.4.3.
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This includes ''gcc'', ''gcc-c++'', ''gcc-fortran'', ''gcc-gnat'', and ''gcc-objc''.
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=== GCC now uses Implicit DSO linking ===
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Key points:
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# ld will no longer automatically search in the dependencies of linked objects.
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# If your project used both libraries A and B, it will not compile unless A and B are both explicitly linked.
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# There are more explanations on the Features page. [[UnderstandingDSOLinkChange |here]]
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Under the new changes, if your package fails its build with a message like:
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  /usr/bin/ld: gpx-parser.o: undefined reference to symbol 'acos@@GLIBC_2.0'
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  /usr/bin/ld: note: 'acos@@GLIBC_2.0' is defined in DSO /lib/libm.so.6 so try adding it to the linker command line
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Then the line that builds the specified .o needs to explicitly link libm.
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For additional details refer to the feature page on the wiki [[Features/ChangeInImplicitDSOLinking]]
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=== _builtin_stdarg_start has been completely removed from GCC 4.4.3 ===
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_builtin_stdarg_start will return a undefined reference to "_builtin_stdarg_start" because of the depreciation of <stdarg.h> in GCC 4.0
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The replacement is _builtin_va_start.  
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Revision as of 00:30, 29 April 2010


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If you have changes or corrections please file a bug. Use the product Fedora Documentation, component release-notes.


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