[Xen-changelog] [xen-unstable] tools/remus: fix build in (symlinked) read-only source tree

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1265793556 0
# Node ID 10a54ab636070d5a7ab52ced41fc753f3370c407
# Parent  a3fa6d444b25daeb0faeb5f24c887a183edba1eb
tools/remus: fix build in (symlinked) read-only source tree

Modifying source files should generally be avoided; if it is being
done, care should at least be taken to not attempt writes to read-only
files.

While at it, also force the whole ugly construct to fail if any of its
commands fails.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
---
 tools/remus/imqebt/Makefile |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff -r a3fa6d444b25 -r 10a54ab63607 tools/remus/imqebt/Makefile
--- a/tools/remus/imqebt/Makefile       Wed Feb 10 09:18:43 2010 +0000
+++ b/tools/remus/imqebt/Makefile       Wed Feb 10 09:19:16 2010 +0000
@@ -52,11 +52,12 @@ build: $(PROGRAMS)
 # a little scripting for a static binary, making one for ebtables-restore
 # should be completely analogous
 imqebt: extensions/ebt_*.c extensions/ebtable_*.c ebtables.c communication.c 
ebtables-standalone.c getethertype.c libebtc.c useful_functions.c
-       cp ebtables-standalone.c ebtables-standalone.c_ ; \
-       cp include/ebtables_u.h include/ebtables_u.h_ ; \
-       sed "s/ main(/ pseudomain(/" ebtables-standalone.c > 
ebtables-standalone.c__ ; \
-       mv ebtables-standalone.c__ ebtables-standalone.c ; \
+       set -e ; \
+       mv ebtables-standalone.c ebtables-standalone.c_ ; \
+       sed "s/ main(/ pseudomain(/" ebtables-standalone.c_ > 
ebtables-standalone.c ; \
        printf "\nint main(int argc, char *argv[])\n{\n "  >> 
ebtables-standalone.c ; \
+       mv include/ebtables_u.h include/ebtables_u.h_ ; \
+       cat include/ebtables_u.h_ >include/ebtables_u.h ; \
        for arg in $(EXT_FUNC) \
        ; do \
        sed s/_init/_$${arg}_init/ extensions/ebt_$${arg}.c > 
extensions/ebt_$${arg}.c_ ; \

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