[Buildroot] [PATCH v3 3/3] merge_config.sh: Avoid false positive matches from comment lines
Nasser Afshin
afshin.nasser at gmail.com
Tue Nov 13 13:44:04 UTC 2018
From: Nasser Afshin <Afshin.Nasser at gmail.com>
We are using empty CONFIG_PREFIX_. This results in false positive match
for comment lines when merging config fragments.
To avoid false positive reports, we use separate sed expressions and
address comment lines explicitly.
This is actually an upstream patch [1] from linux/kbuild project.
[1] https://patchwork.kernel.org/patch/10667571/
Signed-off-by: Nasser Afshin <Afshin.Nasser at gmail.com>
---
support/kconfig/merge_config.sh | 7 +++--
...false-positive-matches-from-comment-lines.patch | 32 ++++++++++++++++++++++
support/kconfig/patches/series | 1 +
3 files changed, 37 insertions(+), 3 deletions(-)
create mode 100644 support/kconfig/patches/21-Avoid-false-positive-matches-from-comment-lines.patch
diff --git a/support/kconfig/merge_config.sh b/support/kconfig/merge_config.sh
index 404ca3864f..14917806a3 100755
--- a/support/kconfig/merge_config.sh
+++ b/support/kconfig/merge_config.sh
@@ -109,7 +109,8 @@ if [ ! -r "$INITFILE" ]; then
fi
MERGE_LIST=$*
-SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(${CONFIG_PREFIX}[a-zA-Z0-9_]*\)[= ].*/\2/p"
+SED_CONFIG_EXP1="s/^\(${CONFIG_PREFIX}[a-zA-Z0-9_]*\)=.*/\1/p"
+SED_CONFIG_EXP2="s/^# \(${CONFIG_PREFIX}[a-zA-Z0-9_]*\) is not set$/\1/p"
TMP_FILE=$(mktemp -t .tmp.config.XXXXXXXXXX)
@@ -123,7 +124,7 @@ for MERGE_FILE in $MERGE_LIST ; do
echo "The merge file '$MERGE_FILE' does not exist. Exit." >&2
exit 1
fi
- CFG_LIST=$(sed -n "$SED_CONFIG_EXP" $MERGE_FILE)
+ CFG_LIST=$(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $MERGE_FILE)
for CFG in $CFG_LIST ; do
grep -q -w $CFG $TMP_FILE || continue
@@ -166,7 +167,7 @@ make KCONFIG_ALLCONFIG=$TMP_FILE $EXTERNAL_ARG $OUTPUT_ARG $ALLTARGET
# Check all specified config values took (might have missed-dependency issues)
-for CFG in $(sed -n "$SED_CONFIG_EXP" $TMP_FILE); do
+for CFG in $(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $TMP_FILE); do
REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG")
diff --git a/support/kconfig/patches/21-Avoid-false-positive-matches-from-comment-lines.patch b/support/kconfig/patches/21-Avoid-false-positive-matches-from-comment-lines.patch
new file mode 100644
index 0000000000..c11144e47e
--- /dev/null
+++ b/support/kconfig/patches/21-Avoid-false-positive-matches-from-comment-lines.patch
@@ -0,0 +1,32 @@
+Index: kconfig/merge_config.sh
+===================================================================
+--- kconfig.orig/merge_config.sh
++++ kconfig/merge_config.sh
+@@ -109,7 +109,8 @@ if [ ! -r "$INITFILE" ]; then
+ fi
+
+ MERGE_LIST=$*
+-SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(${CONFIG_PREFIX}[a-zA-Z0-9_]*\)[= ].*/\2/p"
++SED_CONFIG_EXP1="s/^\(${CONFIG_PREFIX}[a-zA-Z0-9_]*\)=.*/\1/p"
++SED_CONFIG_EXP2="s/^# \(${CONFIG_PREFIX}[a-zA-Z0-9_]*\) is not set$/\1/p"
+
+ TMP_FILE=$(mktemp -t .tmp.config.XXXXXXXXXX)
+
+@@ -123,7 +124,7 @@ for MERGE_FILE in $MERGE_LIST ; do
+ echo "The merge file '$MERGE_FILE' does not exist. Exit." >&2
+ exit 1
+ fi
+- CFG_LIST=$(sed -n "$SED_CONFIG_EXP" $MERGE_FILE)
++ CFG_LIST=$(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $MERGE_FILE)
+
+ for CFG in $CFG_LIST ; do
+ grep -q -w $CFG $TMP_FILE || continue
+@@ -166,7 +167,7 @@ make KCONFIG_ALLCONFIG=$TMP_FILE $EXTERN
+
+
+ # Check all specified config values took (might have missed-dependency issues)
+-for CFG in $(sed -n "$SED_CONFIG_EXP" $TMP_FILE); do
++for CFG in $(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $TMP_FILE); do
+
+ REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
+ ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG")
diff --git a/support/kconfig/patches/series b/support/kconfig/patches/series
index be8627db13..e5a6f69d8f 100644
--- a/support/kconfig/patches/series
+++ b/support/kconfig/patches/series
@@ -9,3 +9,4 @@
18-merge-config.sh-create-temporary-files-in-tmp.patch
19-merge_config.sh-add-br2-external-support.patch
20-merge_config.sh-Allow-to-define-config-prefix.patch
+21-Avoid-false-positive-matches-from-comment-lines.patch
--
2.15.0
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