First, make sure to uninstall whatever version you may or may not already have:. The new compiler will continue to use the existing system C library that came with Cygwin. Interestingly, it does not install a new standard C library! Just go ahead and click Next. Done Some packages could not be installed. Done Building dependency tree Reading state information. When master symbolic link is changed, the slaves will be changed too. This will save compile time.
The installer is an executable named either setup-x86. All packages required by the package s specified for installation will also be retrieved and installed. I now want to switch the default gcc to invoke gcc-4. By switching the version, invoking gcc will execute the particular version of the compiler binary that you wish. These latter features may be used to override decisions made by apt-get's conflict resolution system. Bad luck on my part. .
Wanting to use some new C++11 features I installed version 4. If a hyphen is appended to the package name with no intervening space , the identified package will be removed if it is installed. This will save a significant amount of compile time. This compiler can be invoked using gcc-4. Done The following additional packages will be installed: cpp-4. This is the longest step. This step is not needed if your machine is directly connected to the Internet.
Similarly a plus sign can be used to designate a package to install. What is going on here? Each package is a package name, not a fully qualified filename. Install Cygwin First, download and run either the 32- or 64-bit version of the , depending on your version of Windows. It should be noted that this newer version may be liable to have other bugs that have yet to be reported. Similarly a plus sign can be used to designate a package to install.
Here I will inform about the 4. Compilers for other languages, such as Fortran, Java and Go, will be excluded. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. However, when I run from terminal: sudo apt install gcc-4. The following information may help to resolve the situation: The following packages have unmet dependencies: g++-4. They let you pass arguments to lambda functions as auto or any templated type , like the one highlighted below. All packages required by the package s specified for installation will also be retrieved and installed.
Done Building dependency tree Reading state information. If that happens to you, running the same command a second time should allow the build process to finish successfully. Multiple slaves can be appended along with master. Alternatively, you can install a new instance of Cygwin in a different folder. While trying to build llvm 3.
As pointed out by commenter Thaj below, this information is now obselete. The main downside is that it jumbles the output messages generated during the build process. It is important not to use the arm-none-eabi-gcc package from the Ubuntu repos, because it cannot compile Contiki properly. I also want the freedom to switch back 4. You can make any of these version as the default at any time effortlessly. You can add them all in one fell swoop. One can install the default arm-none-eabi-gcc package provided in Ubuntu 14.
Create a file named test. As a first fix attempt, you may try the following, just in case there's a conflict which apt will be able to repair: sudo apt-get update --fix-missing sudo apt-get dist-upgrade sudo apt-get install gcc-4. It is possible to install a working v4. Do you want to continue? You can switch the symlinks yourself manually, but using this tool makes it easy and clean. Each package is a package name, not a fully qualified filename. But — if we must, we must.