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[[Category:Docs Project]]
==  GCC upgraded in alpha ==
[[Category:Draft documentation]]
[[Category:Documentation beats]]
 
 
 
'''Note: gcc has upgraded from 4.4.2 to 4.4.3'''
This includes gcc, gcc-c++, gcc-fortran, gcc-gnat, and gcc-objc.
 
 
'''GCC now uses Implicit DSO linking.'''
 
[[Features/ChangeInImplicitDSOLinking |Implicit DSO Linking ]]
Key points:
# ld will no longer automatically search in the dependencies of linked objects.
# If your project used both libraries A and B, it will not compile unless A and B are both explicitly linked.
# There are more explanations on the Features page. [[UnderstandingDSOLinkChange |here]]
 
Under the new changes, if your package fails its build with a message like:
 
  /usr/bin/ld: gpx-parser.o: undefined reference to symbol 'acos@@GLIBC_2.0'
  /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
 
 
Then the line that builds the specified .o needs to explicitly link libm.
 
 
 
 
<noinclude>[[Category:Release Notes]]<noinclude>
[[Category:Documentation_beats]]

Latest revision as of 01:32, 20 September 2016

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