Pacbuilder

Pacbuilder is a small but powerful script to automatically recompile the whole system, repos or just a single package (with or without its dependencies). This is quite useful once you have edited /etc/makepkg.conf with some customized CFLAGS.

See Makepkg - Architecture, compile flags for more about specifying CFLAGS. Install pacbuilder-svn from the AUR.

Use

To see actual CFLAGS and CXXFLAGS run:

pacbuilder --gccinfo

Most used command:

pacbuilder --builddeps --keepdeps --verbose --noconfirm --install $packagename

or

pacbuilder -Sbkvn $packagename

Run pacbuilder -h to show a list of all options along with a description.