From e0409808c5f0e8bebc8659abd7caa506af47dc8c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@ninenines.eu>
Date: Fri, 4 Dec 2020 10:36:49 +0100
Subject: Revert "fix: replace perl usage with coreutils"

This reverts commit 1762278d9654e5f90ab587cbde7bac0e2b220014.
---
 core/core.mk | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/core/core.mk b/core/core.mk
index 5f2af67..77adc2e 100644
--- a/core/core.mk
+++ b/core/core.mk
@@ -191,7 +191,8 @@ core_lc = $(subst A,a,$(subst B,b,$(subst C,c,$(subst D,d,$(subst E,e,$(subst F,
 
 core_ls = $(filter-out $(1),$(shell echo $(1)))
 
-core_relpath = $(shell realpath --canonicalize-missing --relative-to=$2 $1)
+# @todo Use a solution that does not require using perl.
+core_relpath = $(shell perl -e 'use File::Spec; print File::Spec->abs2rel(@ARGV) . "\n"' $1 $2)
 
 define core_render
 	printf -- '$(subst $(newline),\n,$(subst %,%%,$(subst ','\'',$(subst $(tab),$(WS),$(call $(1))))))\n' > $(2)
-- 
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