On Mon, 2007-11-05 at 19:03 +0900, John Summerfield wrote: > bruce wrote: > > hi... > > > > a basic question. > > > > fc6 comes with gc4.1 . i'm looking to test gc4.2, and would like to have a > > parallel dev environment so i have both 4.1 and 4.2. > > > > i'm trying to find pointers on what needs to be done, to make sure i don't > > screw up the current 4.1 environment. > > > > it appears that all i need to do is to set a prefix dir when i do the > > initial configure. > > > > --./configure --prefix=/gcc42 > > --make > > --make install > > > > this appears to place everything under the gcc42 top level dir. however, > > what will i need to do to actually be able to hook into the libs/objs > > created by the gcc4.2 build. what will i have to insert into my paths, or > > rather where should the information be placed.. in the bashrc/profile > > files/etc... > > > The standard way in this case is to follow the supplier's advice:FSF in > this case. It should install to /usr/local, well out of your way and > defined by standards to be used this way. If you do this, you are replacing the "system compiler" with a local one (/usr/local is special to gcc!). You will rarely want to do this under linux. Much less error prone is to install to a prefix != /usr and prefix != /usr/local. The LSB recommended way would be to install to /opt or a subdirectory thereof (e.g. --prefix=/opt/gcc42). Ralf
