https://github.com/gentoo/genkernel/pull/60

From c270c3667e04bc60fcdd9ffcc76d4d2c5a8b9d6d Mon Sep 17 00:00:00 2001
From: orbea <orbea@riseup.net>
Date: Sun, 12 May 2024 08:05:09 -0700
Subject: [PATCH] build: fix for POSIX shells

When building genkernel where /bin/sh is a POSIX shell such as lksh
(mksh) it will install a malformed software.sh. This is because 'echo
-e' is not portable shell. This can be fixed by using 'printf' instead.

Signed-off-by: orbea <orbea@riseup.net>
---
 Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 1e20ef5d..637ef1e3 100644
--- a/Makefile
+++ b/Makefile
@@ -69,7 +69,7 @@ SOFTWARE = BCACHE_TOOLS \
 	ZLIB \
 	ZSTD
 
-SOFTWARE_VERSION = $(foreach entry, $(SOFTWARE), "VERSION_$(entry)=${VERSION_$(entry)}\n")
+SOFTWARE_VERSION = $(foreach entry, $(SOFTWARE), "VERSION_$(entry)=${VERSION_$(entry)}")
 
 PREFIX = /usr/local
 BINDIR = $(PREFIX)/bin
@@ -183,7 +183,7 @@ $(BUILD_DIR)/build-config:
 
 $(BUILD_DIR)/software.sh:
 	install -d $(BUILD_DIR)/temp/
-	echo -e $(SOFTWARE_VERSION) > $(BUILD_DIR)/temp/versions
+	printf '%s\n' $(SOFTWARE_VERSION) > $(BUILD_DIR)/temp/versions
 	cat $(BUILD_DIR)/temp/versions defaults/software.sh > $(BUILD_DIR)/software.sh
 
 $(BUILD_DIR)/doc/genkernel.8.txt: