问题
I've installed cygwin environment on Windows. There is gcc 4.3. How to install gcc 4.4 in this environment?
回答1:
The alternative is to build one yourself, but it will be extremely slow on cygwin. If you are a Linux user, you can build a native compiler (which runs in cmd.exe on windows, and produces native win32 binaries) on Linux. It is much faster (order of magnitude faster in my experience).
Otherwise, mingw is a good solution, although in my experience, the binary from equation.com work better for gcc 4.4 (there is no official gcc 4.4 from MinGW yet)
回答2:
If you don't need the cygwin environment for special reasons, I'd go for Mingw with the gcc 4.4. You can find builds on: http://www.tdragon.net/recentgcc/.
回答3:
Reading the MinGW FAQ, reveals that its possible to pass requests to use the MinGW binaries instead of the ones shipped with Cygwin.
For those who would like to use the Cygwin environment for development, yet generate non-Cygwin-dependant executables, a much easier option to "-mno-cygwin" does exist. Simply install Cygwin and the MinGW distribution in separate directories (i.e. "C:\CYGWIN" and "C:\MINGW"), and make sure that the "/bin" subdirectory beneath your MinGW installation comes before Cygwin's "/bin" subdirectory in your PATH environment variable (i.e. "PATH=%PATH%;C:\MINGW\BIN;C:\CYGWIN\BIN"). This will allow you access to all the UNIX tools you want, while ensuring that the instance of GCC used is the MinGW version. %%%
Bear in mind that within the "/etc/profile" file, Cygwin by default places "/usr/local/bin", "/usr/bin", and "/bin" ahead of your system-level PATH. Therefore, it is not enough to have the MinGW's "/bin" ahead of Cygwin in your Windows path... it must also be set to come first within the Cygwin environment (either by modifying "/etc/profile" or setting it manually).
来源：https://stackoverflow.com/questions/1011728/how-to-install-gcc-4-4-on-cygwin