The problem is with the backquote AND/OR addprefix.
The following makefile illustrates the bug.
Notice the doubled ././ in the test output.
Version information is in the output.
#
# Make file illustrates a problem with back quote
# by juxtaposing results with back quote and shell
#
#
nice_string:=$(shell ls *.tst)#
buggy_string:=`ls *.tst`#
cat_buggy:=foo ${buggy_string}#
cat_nice:=foo ${nice_string}#
test:
-rm *.tst
@ echo
echo test1 >test1.tst
echo test2 >test2.tst
echo test3 >test3.tst
@ echo
@ echo xbeginx ${buggy_string} xendx string looks fine
@ echo xbeginx ${nice_string} xendx string looks fine
@ echo
@ echo xbeginx $(addprefix ./,${buggy_string}) xendx mucked up
@ echo xbeginx $(addprefix ./,${nice_string}) xendx NOT mucked
@ echo
@ echo xbeginx $(addprefix ./,${cat_buggy}) xendx mucked up
@ echo xbeginx $(addprefix ./,${cat_nice}) xendx NOT mucked up
@ echo
@ date
@ echo
@ make --version
@ echo
@ uname -a
@ echo
@ sh --version
@ echo
#
# End Makefile
#
# Results begin below
#####################
rm *.tst
echo test1 >test1.tst
echo test2 >test2.tst
echo test3 >test3.tst
xbeginx test1.tst test2.tst test3.tst xendx string looks fine
xbeginx test1.tst test2.tst test3.tst xendx string looks fine
xbeginx ././test1.tst ./test2.tst ./test3.tst xendx mucked it up
xbeginx ./test1.tst ./test2.tst ./test3.tst xendx NOT mucked up
xbeginx ./foo ././test1.tst ./test2.tst ./test3.tst xendx mucked up
xbeginx ./foo ./test1.tst ./test2.tst ./test3.tst xendx NOT mucked up
Tue Aug 31 15:50:37 EDT 2004
GNU Make 3.80
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Linux alfalfa 2.6.3-1-386 #2 Tue Feb 24 20:20:23 EST 2004 i686 GNU/Linux
GNU bash, version 2.05b.0(1)-release (i386-pc-linux-gnu)
Copyright (C) 2002 Free Software Foundation, Inc.
##################
# end test results
##################
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