GNUmakefile: Do not depend on system tr for Gentoo

Author: oech3

Cargo.toml

@@ -295,7 +295,13 @@ feat_require_unix_core = [
 ]
 # "feat_require_unix_utmpx" == set of utilities requiring unix utmp/utmpx support
 # * ref: <https://wiki.musl-libc.org/faq.html#Q:-Why-is-the-utmp/wtmp-functionality-only-implemented-as-stubs?>
-feat_require_unix_utmpx = ["pinky", "uptime", "users", "who"]
+feat_require_unix_utmpx = [
+  # block linter to extract utils at make by sed
+  "users",
+  "uptime",
+  "who",
+  "pinky",
+]
 # "feat_require_unix_hostid" == set of utilities requiring gethostid in libc (only some unixes provide)
 feat_require_unix_hostid = ["hostid"]
 # "feat_require_selinux" == set of utilities depending on SELinux.

GNUmakefile

@@ -79,17 +79,14 @@ LN ?= ln -sf
 
 # Possible programs
 PROGS := \
-	$(shell sed -n '/feat_Tier1 = \[/,/\]/p' Cargo.toml | sed '1d;2d' |tr -d '],"\n')\
-	$(shell sed -n '/feat_common_core = \[/,/\]/p' Cargo.toml | sed '1d' |tr -d '],"\n')
+	$(shell sed -n '/feat_Tier1 = \[/,/\]/{s/[,"]//g;/common_core/d;/^ /p}' Cargo.toml)\
+	$(shell sed -n '/feat_common_core = \[/,/\]/{s/[,"]//g;/^ /p}' Cargo.toml)
 
 UNIX_PROGS := \
-	$(shell sed -n '/feat_require_unix_core = \[/,/\]/p' Cargo.toml | sed '1d' |tr -d '],"\n') \
+	$(shell sed -n '/feat_require_unix_core = \[/,/\]/{s/[,"]//g;/^ /p}' Cargo.toml) \
+	$(shell sed -n -e 's/.*#.*//' -e '/feat_require_unix_utmpx = \[/,/\]/{s/[,"]//g;/^ /p}' Cargo.toml) \
 	hostid \
-	pinky \
-	stdbuf \
-	uptime \
-	users \
-	who
+	stdbuf
 
 SELINUX_PROGS := \
 	chcon \