How to execute a command for each element in a Makefile array?

Question

linux

I can't find a pretty way to execute a command (which only allows one argument) for each folder in the THEMES.

PREFIX ?= /usr
THEMES ?= ThemeOne ThemeTwo ThemeThree

all:

install:
  mkdir -p $(DESTDIR)$(PREFIX)/share/icons
  cp -R $(THEMES) $(DESTDIR)$(PREFIX)/share/icons

post-install:
  -gtk-update-icon-cache -q $(DESTDIR)$(PREFIX)/share/icons/ThemeOne
  -gtk-update-icon-cache -q $(DESTDIR)$(PREFIX)/share/icons/ThemeTwo
  -gtk-update-icon-cache -q $(DESTDIR)$(PREFIX)/share/icons/ThemeThree

uninstall:
  -rm -rf $(foreach theme,$(THEMES),$(DESTDIR)$(PREFIX)/share/icons/$(theme))

The example shows that for the purposes installand uninstallsuch a problem does not arise, but with post-installthis method it will not work, because.

gtk-update-icon-cache -q $(foreach theme,$(THEMES),$(DESTDIR)$(PREFIX)/share/icons/$(theme))

will build cache only for $(DESTDIR)$(PREFIX)/share/icons/ThemeOne.
I also know about the way:

.PHONY: $(THEMES)
$(THEMES):
  -gtk-update-icon-cache -q $(DESTDIR)$(PREFIX)/share/icons/[email protected]

post-install: $(THEMES)

but it will not allow other commands to be executed for the same directories if needed.
Interested primarily in pure make.

Answer 1

Sergei E., Look at the eval example, it can be applied to your question: https
://www.gnu.org/software/make/manual/html_node...
as in the example. Actually, eval itself can not be used. There is more here - an example of using foreach.
But if you need to execute a complex sequence, then you can wrap it in eval with the definition of your functions.