GCC 4.5 Release Series
Changes, New Features, and Fixes

Caveats

General Optimizer Improvements

New Languages and Language specific improvements

All languages

Ada

C family

C

C++

Runtime Library (libstdc++)

Fortran

Java (GCJ)

New Targets and Target Specific Improvements

AIX

ARM

AVR

IA-32/x86-64

M68K/ColdFire

MeP

Support has been added for the Toshiba Media embedded Processor (MeP, or mep-elf) embedded target.

MIPS

picochip

RS/6000 (POWER/PowerPC)

RX

Support has been added for the Renesas RX Processor (rx-elf) target.

Operating Systems

Windows (Cygwin and MinGW)

Documentation improvements

Other significant improvements

Plugins

Installation changes