Re: Build TAGS problem with O=

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George Anzinger wrote:
If you try:
make O=/usr/src/ver/2.6.13-rc/obj/ -j5 LOCALVERSION=_2.6.13-rc TAGS ARCH=i386

it fails with:
  MAKE   TAGS
find: security/selinux/include: No such file or directory
find: include: No such file or directory
find: include/asm-i386: No such file or directory
find: include/asm-generic: No such file or directory


The problem seems to be this bit of the topdir Makefile:


#We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
#(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
#Adding $(srctree) adds about 20M on i386 to the size of the output file!

ifeq ($(KBUILD_OUTPUT),)
__srctree =
else
__srctree = $(srctree)/
endif

It would appear that the "ifeq ($(KBUILD_OUTPUT),)" is doing the wrong thing. I am not a make expert, but I have had a lot of BAD experience trying to use this construct. Any one up to proposing a fix?

The problem appears to be that KBUILD_OUTPUT is NOT defined after make reruns itself. Here is a fix:

Signed-off-by:  George Anzinger  <[email protected]>

--- /usr/src/linux-2.6.12-org/Makefile	2005-07-01 14:37:44.000000000 -0700
+++ /usr/src/linux-2.6.13-rc/Makefile	2005-07-05 19:45:00.588314304 -0700
@@ -1149,7 +1149,7 @@
#(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
 #Adding $(srctree) adds about 20M on i386 to the size of the output file!

-ifeq ($(KBUILD_OUTPUT),)
+ifeq ($(src),$(obj))
 __srctree =
 else
 __srctree = $(srctree)/



--
George Anzinger   [email protected]
HRT (High-res-timers):  http://sourceforge.net/projects/high-res-timers/
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