#! /bin/sh -e
# tup - A file-based build system
#
# Copyright (C) 2010-2015  Mike Shal <marfey@gmail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

# Try to list duplicate outputs and have them get pruned.

. ./tup.sh
cat > Tupfile << HERE
!cc = foreach |> gcc -c %f -o %o |> %B.o
!ld = |> ld -r %f -o %o |>

*chain[%B.c] = !cc
*chain[\$(%B-y)] = !ld

obj-y += foo.o
obj-y += foo.o
obj-y += bar.o
bar-y += bar1.o
bar-y += bar1.o
bar-y += bar2.o
: foreach \$(obj-y) <| *chain <|
: \$(obj-y) |> !ld |> built-in.o
HERE
echo 'int main(void) {return 0;}' > foo.c
echo 'void bar1(void) {}' > bar1.c
echo 'void bar2(void) {}' > bar2.c
tup touch foo.c bar1.c bar2.c Tupfile
update

tup_dep_exist . foo.c . 'gcc -c foo.c -o foo.o'
tup_dep_exist . bar1.c . 'gcc -c bar1.c -o bar1.o'
tup_dep_exist . bar2.c . 'gcc -c bar2.c -o bar2.o'
tup_dep_exist . bar1.o . 'ld -r bar1.o bar2.o -o bar.o'
tup_dep_exist . bar2.o . 'ld -r bar1.o bar2.o -o bar.o'
tup_dep_exist . foo.o . 'ld -r foo.o bar.o -o built-in.o'
tup_dep_exist . bar.o . 'ld -r foo.o bar.o -o built-in.o'

eotup
