#!/bin/sh

set -eu
eval "$(args freshen-build-uberbaum ubersrc uberbuild gccsrc gccbuild -- "$@")"

cmd () {
    echo
    echo "freshen-build-uberbaum: $1" >&2
    eval "$1" || {
      status="$?"
      echo "exit status: $status"
      return $status
    }
}

# Always start with empty build trees.
cmd "wipe-build-tree '$uberbuild'"
cmd "wipe-build-tree '$gccbuild'"


# First, we build and install gas, ld, and binutils from uberbaum.
cmd "cd '$uberbuild'"
cmd "CFLAGS=-g3 CXXFLAGS=-g3 $(compiler $uberbuild) '$ubersrc/configure' $(config-flags $uberbuild)"
cmd "$(compiler $uberbuild) make all-{gas,ld,binutils}"
cmd "$(compiler $uberbuild) make install-{gas,ld,binutils}"

uberbin="$(prefix $uberbuild/config.status)/bin"
setpath="with-path '$uberbin' $(compiler $gccbuild)"


# Then, we build and install GCC from its own repository, which, if
# it's a cross-compiler, depends on the target 'ar' we just built.
cmd "cd '$gccbuild'"
cmd "CFLAGS=-g3 CXXFLAGS=-g3 ${setpath} '$gccsrc/configure' $(config-flags $gccbuild)"
cmd "${setpath} make"
cmd "${setpath} make install"


# And finally, we rebuild the entire uberbaum tree from sources.
# We really do have to rebuild the whole thing, because the top-level
# configure script chose, for example, CC_FOR_TARGET before we
# installed GCC.  So the whole thing needs to be re-configured.
setpath="with-path '$uberbin' $(compiler $uberbuild)"
cmd "wipe-build-tree '$uberbuild'"
cmd "cd '$uberbuild'"
cmd "CFLAGS=-g3 CXXFLAGS=-g3 ${setpath} '$ubersrc/configure' $(config-flags $uberbuild)"
cmd "${setpath} make"
cmd "${setpath} make install"