linux-kernel - [PATCH 1/3] kbuild: do not use scripts/ld-version.sh for checking spatch version

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Date:   Sun, 13 Dec 2020 01:54:29 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     linux-kbuild@...r.kernel.org
Cc:     Dominique Martinet <asmadeus@...ewreck.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Gilles Muller <Gilles.Muller@...6.fr>,
        Julia Lawall <Julia.Lawall@...6.fr>,
        Matthias Maennich <maennich@...gle.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nicolas Palix <nicolas.palix@...g.fr>, cocci@...teme.lip6.fr,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] kbuild: do not use scripts/ld-version.sh for checking spatch version

scripts/ld-version.sh was, as its file name implies, originally intended
for the GNU ld version, but is (ab)used for the spatch version too.

Use 'sort -CV' for the version comparison, then coccicheck does not need
to use scripts/ld-version.sh. Fix nsdeps as well.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 scripts/coccicheck | 14 +++++---------
 scripts/nsdeps     |  4 +---
 2 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/scripts/coccicheck b/scripts/coccicheck
index 209bb0427b43..d7f6b7ff130a 100755
--- a/scripts/coccicheck
+++ b/scripts/coccicheck
@@ -16,7 +16,6 @@ if [ ! -x "$SPATCH" ]; then
 fi
 
 SPATCH_VERSION=$($SPATCH --version | head -1 | awk '{print $3}')
-SPATCH_VERSION_NUM=$(echo $SPATCH_VERSION | ${DIR}/scripts/ld-version.sh)
 
 USE_JOBS="no"
 $SPATCH --help | grep "\-\-jobs" > /dev/null && USE_JOBS="yes"
@@ -186,14 +185,11 @@ coccinelle () {
 
     OPT=`grep "Options:" $COCCI | cut -d':' -f2`
     REQ=`grep "Requires:" $COCCI | cut -d':' -f2 | sed "s| ||"`
-    REQ_NUM=$(echo $REQ | ${DIR}/scripts/ld-version.sh)
-    if [ "$REQ_NUM" != "0" ] ; then
-	    if [ "$SPATCH_VERSION_NUM" -lt "$REQ_NUM" ] ; then
-		    echo "Skipping coccinelle SmPL patch: $COCCI"
-		    echo "You have coccinelle:           $SPATCH_VERSION"
-		    echo "This SmPL patch requires:      $REQ"
-		    return
-	    fi
+    if [ -n "$REQ" ] && ! { echo "$REQ"; echo "$SPATCH_VERSION"; } | sort -CV ; then
+	    echo "Skipping coccinelle SmPL patch: $COCCI"
+	    echo "You have coccinelle:           $SPATCH_VERSION"
+	    echo "This SmPL patch requires:      $REQ"
+	    return
     fi
 
 #   The option '--parse-cocci' can be used to syntactically check the SmPL files.
diff --git a/scripts/nsdeps b/scripts/nsdeps
index dab4c1a0e27d..e8ce2a4d704a 100644
--- a/scripts/nsdeps
+++ b/scripts/nsdeps
@@ -12,11 +12,9 @@ if [ ! -x "$SPATCH" ]; then
 	exit 1
 fi
 
-SPATCH_REQ_VERSION_NUM=$(echo $SPATCH_REQ_VERSION | ${DIR}/scripts/ld-version.sh)
 SPATCH_VERSION=$($SPATCH --version | head -1 | awk '{print $3}')
-SPATCH_VERSION_NUM=$(echo $SPATCH_VERSION | ${DIR}/scripts/ld-version.sh)
 
-if [ "$SPATCH_VERSION_NUM" -lt "$SPATCH_REQ_VERSION_NUM" ] ; then
+if ! { echo "$SPATCH_REQ_VERSION"; echo "$SPATCH_VERSION"; } | sort -CV ; then
 	echo "spatch needs to be version $SPATCH_REQ_VERSION or higher"
 	exit 1
 fi
-- 
2.27.0