On Tue, Apr 18, 2017 at 09:17:24AM +0000, J. Roeleveld wrote > > If you are certain you don't have gcc in slot 5.x installed. You > can add palemoon to /etc/portage/package.unmask > > That will override the package.mask from the overlay.
For the official contributed SSE version, I build with 4.9.4, as per the developers' specs. At home I build with 5.4.0 for personal use. It runs fine on Puppy Linux on a refurbished Lenovo T400 laptop, which uses older glib, etc (with security fixes like "ghost" backported). I do not have Gentoo's 5.4.0 installed. Instead, I've installed gcc-5.4.0 to $HOME/gcc540 using the following script. Note the option "--with-default-libstdcxx-abi=gcc4-compatible", which allows backward compatability. I've disabled multilib, set my own CFLAGS, and your list of required languages may differ from mine. Set MAKEOPTS as appropriate for your machine. The following script downloads gcc-5.4.0 and additional lib sources, and then builds gcc, which is installed in $HOME/gcc540 (no root/sudo required). It can take a couple of hours or longer, depending on how old your machine is. ===================================================================== #!/bin/bash # # Instructions adapted from https://gcc.gnu.org/wiki/InstallingGCC wget http://ftpmirror.gnu.org/gcc/gcc-5.4.0/gcc-5.4.0.tar.bz2 tar xjf gcc-5.4.0.tar.bz2 # # To get gmp, mpc, mpfr, and isl libs # You *MUST* run this script from the top-level GCC source dir cd gcc-5.4.0 contrib/download_prerequisites export CFLAGS="-O2 -march=native -mfpmath=sse -fomit-frame-pointer -pipe -fno-unwind-tables -fno-asynchronous-unwind-tables" export CXXFLAGS="${CFLAGS}" export MAKEOPTS="-j4" # # You *MUST NOT* run ./configure from the toplevel GCC source dir mkdir gcc-build && cd gcc-build ../configure --prefix=$HOME/gcc540 \ --disable-multilib \ --enable-libstdcxx-threads \ --enable-libstdcxx-time \ --enable-shared \ --enable-__cxa_atexit \ --disable-libunwind-exceptions \ --disable-libada \ --with-default-libstdcxx-abi=gcc4-compatible make -j4 make install ===================================================================== The gcc in $HOME/gcc540 is not the default compiler. To invoke it, I have to *SOURCE* the following commands to set up some variables to make $HOME/gcc540 the default for this particular session... ===================================================================== export GCCX_ROOT=$HOME/gcc540 export PATH=$GCCX_ROOT/bin:$PATH export MANPATH=$GCCX_ROOT/share/man:MANPATH export INFOPATH=$GCCX_ROOT/share/info:$INFOPATH export LD_LIBRARY_PATH=$GCCX_ROOT/lib:$GCCX_ROOT/lib:$LD_LIBRARY_PATH export LD_RUN_PATH=$GCCX_ROOT/lib:$GCCX_ROOT/lib:$LD_RUN_PATH export LIBRARY_PATH=$GCCX_ROOT/lib:$GCCX_ROOT/lib:$LIBRARY_PATH export INCLUDE_PATH=$GCCX_ROOT/include:$INCLUDE_PATH export CPLUS_INCLUDE_PATH=$GCCX_ROOT/include:$CPLUS_INCLUDE_PATH export C_INCLUDE_PATH=$GCCX_ROOT/include:$C_INCLUDE_PATH ===================================================================== -- Walter Dnes <waltd...@waltdnes.org> I don't run "desktop environments"; I run useful applications
