all: src/diff.rs bin/diff1 bin/diff2
src/diff.rs: src/diff.c
gcc -E -P -trigraphs -D TESTRS $^ -o $@
bin/diff1: src/diff.c src/support.c
gcc -fdebug-prefix-map=`pwd`= -g -D TEST1 $^ -o $@
bin/diff2: src/diff.c src/support.c
gcc -fdebug-prefix-map=`pwd`= -g -D TEST2 $^ -o $@