path.sh: Further cleanup

Remove all symlinks each time, to ensure that no
stragglers are left behind, since they are being
re-generated each time anyway.

The code for determining version numbers has now
been unified under gnu_setver()

Signed-off-by: Leah Rowe <leah@libreboot.org>

include/lib.sh

@@ -95,7 +95,7 @@ if [ -z "${TMPDIR+x}" ]; then
 	export TMPDIR="/tmp"
 	export TMPDIR="$(mktemp -d -t xbmk_XXXXXXXX)"
 	touch lock || $err "cannot create 'lock' file"
-	rm -Rf xbmkpath || $err "cannot create xbmkpath"
+	rm -Rf xbmkpath || $err "cannot remove xbmkpath"
 	mkdir -p xbmkpath || $err "cannot create xbmkpath"
 	export PATH="$PWD/xbmkpath:$PATH" || $err "Can't create xbmkpath"
 	xbmk_parent="y"

include/path.sh

@@ -1,48 +1,43 @@
 # SPDX-License-Identifier: MIT
 # Copyright (c) 2024 Leah Rowe <leah@libreboot.org>
 
+eval `setvars "" gccver gccfull gnatver gnatfull gccdir`
+
 # fix mismatching gcc/gnat versions on debian trixie/sid
 check_gnat_path()
 {
-	eval `setvars "" gccver gccfull gnatver gnatfull gccdir`
+	rm -f xbmkpath/* || $err "Cannot clear xbmkpath/"
-	command -v gcc 1>/dev/null || $err "Command 'gcc' unavailable."
 
-	for _util in gcc gnat; do
+	eval `setvars "" gccver gccfull gnatver gnatfull gccdir`
-		eval "$_util --version 1>/dev/null 2>/dev/null || continue"
+	gnu_setver gcc gcc || $err "Command 'gcc' unavailable."
-		eval "${_util}ver=\"`$_util --version 2>/dev/null | head -n1`\""
+	gnu_setver gnat gnat || :
-		eval "${_util}ver=\"\${${_util}ver##* }\""
-		eval "${_util}full=\"\${$_util}ver\""
-		eval "${_util}ver=\"\${${_util}ver%%.*}\""
-	done
 
 	[ -z "$gccver" ] && $err "Cannot detect host GCC version"
 	[ "$gnatfull" = "$gccfull" ] && return 0
 
 	gccdir="$(dirname "$(command -v gcc)")"
-	[ -d "$gccdir" ] || $err "gcc PATH dir \"$gccdir\" does not exist."
-
 	for _gnatbin in "$gccdir/gnat-"*; do
 		[ -f "$_gnatbin" ] || continue
 		[ "${_gnatbin#"$gccdir/gnat-"}" = "$gccver" ] || continue
-		gnatver="${_gnatbin#"$gccdir/gnat-"}"
+		gnatver="${_gnatbin#"$gccdir/gnat-"}"; break
-		break
 	done
-	[ -x "$gccdir/gnat-$gccver" ] || \
+	gnu_setver "gnat" "$gccdir/gnat-$gccver" || $err "Unknown gnat version"
-	    $err "$gccdir/gnat-$gccver not executable"
-	gnatfull="`"$gccdir/gnat-$gccver" --version | head -n1`"
-	gnatfull="${gnatfull##* }"
-	[ "${gnatfull%%.*}" = "$gnatver" ] || \
-	    $err "$gccdir/gnat-$gccver v${gnatfull%%.*}; expected v$gnatver"
-
 	[ "$gnatfull" = "$gccfull" ] || $err "GCC/GNAT versions do not match."
 
 	(
 	x_ cd xbmkpath
 	for _gnatbin in "$gccdir/gnat"*"-$gccver"; do
-		[ -e "$_gnatbin" ] || continue
+		[ -e "$_gnatbin" ] || continue; _gnatutil="${_gnatbin##*/}"
-		_gnatutil="${_gnatbin##*/}"
+		x_ ln -s "$_gnatbin" "${_gnatutil%"-$gccver"}"
-		ln -s "$_gnatbin" "${_gnatutil%"-$gccver"}" || \
-		    $err "E: ln -s \"$_gnatbin\" \"${_gnatutil%"-$gccver"}\""
 	done
-	) || $err "Cannot create gnat-$gccver link in $gccdir"
+	) || $err "Cannot create gnat-$gccver link in $gccdir"; :
+}
+
+gnu_setver()
+{
+	eval "$2 --version 1>/dev/null 2>/dev/null || return 1"
+	eval "${1}ver=\"`$2 --version 2>/dev/null | head -n1`\""
+	eval "${1}ver=\"\${${1}ver##* }\""
+	eval "${1}full=\"\${$1}ver\""
+	eval "${1}ver=\"\${${1}ver%%.*}\""; :
 }