[PATCH] Makefile: respect DESTDIR for shell completions

[Sam James]

It's respected for the main 'parallel' script but not for
the new completions.
---
 Makefile.am | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 4234028e..a385add5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -170,12 +170,12 @@ pack_unpack_and_test_build:
 zshcompletiondir=${datarootdir}/zsh/site-functions
 zshcompletion=${zshcompletiondir}/_parallel
 install-data-hook:
-       mkdir -p ${datarootdir}/bash-completion/completions
-       mkdir -p ${zshcompletiondir}
-       parallel --shell-completion bash > 
${datarootdir}/bash-completion/completions/parallel
-       echo '#compdef parallel' > ${zshcompletion}
-       echo '(( $$+functions[_comp_parallel] )) ||' >> ${zshcompletion}
-       echo '  eval "$$(parallel --shell-completion auto)" &&' >> 
${zshcompletion}
-       echo '  _comp_parallel' >> ${zshcompletion}
+       mkdir -p $(DESTDIR)${datarootdir}/bash-completion/completions
+       mkdir -p $(DESTDIR)${zshcompletiondir}
+       parallel --shell-completion bash > 
$(DESTDIR)${datarootdir}/bash-completion/completions/parallel
+       echo '#compdef parallel' > $(DESTDIR)${zshcompletion}
+       echo '(( $$+functions[_comp_parallel] )) ||' >> 
$(DESTDIR)${zshcompletion}
+       echo '  eval "$$(parallel --shell-completion auto)" &&' >> 
$(DESTDIR)${zshcompletion}
+       echo '  _comp_parallel' >> $(DESTDIR)${zshcompletion}
 
 EXTRA_DIST = CITATION CITATION.cff CREDITS LICENSES/CC-BY-SA-4.0.txt 
LICENSES/GFDL-1.3-or-later.txt LICENSES/GPL-3.0-or-later.txt
-- 
2.37.0