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=== GCC 5.1.1 ===
Fedora 23 is built on GCC 5.1.1.  For information on building your own code with this compiler release, refer to the upstream change info at https://gcc.gnu.org/gcc-5/changes.html


=== glibc 2.22 ===
Fedora 23 provides version 2.22 of the GNU C libraries.  Learn about the changes available in the latest version of glibc from the project's release announcement at https://www.sourceware.org/ml/libc-alpha/2015-08/msg00609.html


 
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==  GCC upgraded in alpha ==
[[Category:Docs Project]]
[[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.
 
----
 
 
''' _builtin_stdarg_start has been completely removed from GCC 4.4.3''' 
 
_builtin_stdarg_start will return a undefined reference to "_builtin_stdarg_start" because of the depreciation of <stdarg.h> in GCC 4.0
 
 
 
 
 
 
<noinclude>[[Category:Release Notes]]<noinclude>
[[Category:Documentation_beats]]

Revision as of 02:45, 28 August 2015

GCC 5.1.1

Fedora 23 is built on GCC 5.1.1. For information on building your own code with this compiler release, refer to the upstream change info at https://gcc.gnu.org/gcc-5/changes.html

glibc 2.22

Fedora 23 provides version 2.22 of the GNU C libraries. Learn about the changes available in the latest version of glibc from the project's release announcement at https://www.sourceware.org/ml/libc-alpha/2015-08/msg00609.html

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