Copy list of files to specific paths with Makefile - makefile

Question

Scratching my head for a while now, but I would like to copy an arbitrary list of files with paths to under specified path in system.
File layout:
data/a/file1.ext1
data/b/randomfile.ext2
data/c/file3.ext3
data/c/subdir/randomfile.2
Running make -f Makefile deploy DESTDIR=/path/to/somewhere copies those files to:
$(DESTDIR)/a/file1.ext1
$(DESTDIR)/b/randomfile.ext2
$(DESTDIR)/c/file3.ext3
$(DESTDIR)/c/subdir/randomfile.2
Makefile:
$FILES = \
a/file1.ext1 \
b/randomfile.ext2 \
c/file3.ext3 \
c/subdir/randomfile.2
ifneq ($(filter env_check,$(MAKECMDGOALS)),$())
ifndef DESTDIR
$(error DESTDIR not defined)
endif
endif
# lots of currently broken rules :(
# check whether target directory has certain structure
# check whether all the files listed in $(FILES) are in repository

Answer 1

Are you looking for something like this?
FILES := ...
DST_FILES := $(addprefix $(DESTDIR)/,$(FILES))
ifneq ($(filter env_check,$(MAKECMDGOALS)),$())
ifndef DESTDIR
$(error DESTDIR not defined)
endif
endif
all: $(DST_FILES)
$(DST_FILES) : ${DESTDIR}/% : %
#echo "$< ==> $#"
#[[ -e $< ]] || (echo "some error for $<" && false)
#mkdir -p $(dir $#)
#cp $< $#
[Edit]:
Although the version somewhat worked, I still needed to do following adjustments:
Files in source repository are stored under data directory - fixed by using $addprefix call
When file in $(DESTDIR) already existed, it was never copied - used the .FORCE target. (Another option would be --always-make commandline option).
Eventually, the working Makefile looks like that:
# File are stored under data/
FILES= \
foo/file1.ext \
bar/file2.txe \
bar/dir/file3.txt
ifneq ($(filter env_check,$(MAKECMDGOALS)),$())
ifndef DESTDIR
$(error DESTDIR not defined)
endif
endif
.PHONY: deploy help
help:
#echo "Deploy stuff"
# Check whether certain directories in the output are present
env_check:
#test -d $(DESTDIR)/WEB-INF -a -d $(DESTDIR)/META-INF || \
( echo "DESTDIR: \"$(DESTDIR)\" is not proper deployment path" && exit 1 )
DST_FILES := $(addprefix $(DESTDIR)/, $(FILES))
# We need to add our path prefix to local files and FORCE to always do the copying
$(DST_FILES) : $(addprefix $(DESTDIR), %) : $(addprefix data,%) .FORCE
#cp -pv $< $#
.FORCE:
deploy: env_check $(DST_FILES)
#echo "Deployment done..."