setup-util-bash: cross-os compat building

/derived from balupton/dotfiles@161784b

commands/setup-util-bash

@@ -61,18 +61,20 @@ function setup_util_bash() (
 	function do_install {
 		# dependencies
 		setup-util-devel --quiet
+		# setup-util --cli='yacc' APT='byacc' BREW='byacc' <-- only needed for some old bash versions, which we don't care about here
 		source "$DOROTHY/sources/environment.sh"
 
-		# build
-		./configure
+		# install for all users
+		# support unbounded CPPFLAGS, as if its result from [setup-environment-commands] is empty, as it will be on ubuntu, then it will remain unbounded
+		./configure CFLAGS='-DSSH_SOURCE_BASHRC' CPPFLAGS="-w -Wno-error=all ${CPPFLAGS-}"
 		make install
 	}
 	function do_uninstall {
 		# dependencies
 		setup-util-devel --quiet
 		source "$DOROTHY/sources/environment.sh"
 
-		# build
+		# uninstall for all users
 		./configure
 		make uninstall
 	}