Patch applies to
commit 42a579a0f960081cd16fc945036e4780c3ad3202
When running "make ARCH=arm TAGS" in a cross chroot using
qemu-arm-static, the following message is emitted:
[user@host:/home/work/linux]: make ARCH=arm TAGS
GEN TAGS
/usr/bin/xargs: etags: Argument list too long
This can be fixed by by passing "-s $((120 * 1024))" to xargs in
scripts/tags.sh when QEMU matches .*qemu-.*-static$.
This limits the xargs command line to 120KiB characters to provide
headroom for people running inside a cross chroot using
qemu-.*-static.
Signed-off-by: David Cullen <david.cul...@koe-americas.com>
---
scripts/tags.sh | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/scripts/tags.sh b/scripts/tags.sh
index cff8faa..02947c5 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -5,12 +5,19 @@
# mode may be any of: tags, TAGS, cscope
#
# Uses the following environment variables:
-# ARCH, SUBARCH, SRCARCH, srctree, src, obj
+# ARCH, SUBARCH, SRCARCH, srctree, src, obj, QEMU
if [ "$KBUILD_VERBOSE" = "1" ]; then
set -x
fi
+# If the user is running in a cross chroot using qemu-.*-static,
+# limit xargs to 120KiB of characters per command line.
+XARGS_MAX_CHARS=
+if [ -n "$QEMU" ] && [[ "$QEMU" =~ .*qemu-.*-static$ ]] ; then
+ XARGS_MAX_CHARS="-s $(( 120 * 1024 ))"
+fi
+
# This is a duplicate of RCS_FIND_IGNORE without escaped '()'
ignore="( -name SCCS -o -name BitKeeper -o -name .svn -o \
-name CVS -o -name .pc -o -name .hg -o \
@@ -121,7 +128,7 @@ dogtags()
exuberant()
{
- all_sources | xargs $1 -a \
+ all_sources | xargs $XARGS_MAX_CHARS $1 -a \
-I __initdata,__exitdata,__acquires,__releases \
-I __read_mostly,____cacheline_aligned \
-I ____cacheline_aligned_in_smp \
--
1.7.9.5--
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