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SubjectCONFIG_KPROBES=y build requires gawk
With CONFIG_KPROBES=y on Ubuntu 9.10 x86_64 default install, I get the

Error: Your awk doesn't support charactor-class.
Please try to use gawk.
CC arch/x86/lib/inat.o
arch/x86/lib/inat.c:24:25: error: inat-tables.c: No such file or directory
arch/x86/lib/inat.c: In function "inat_get_opcode_attribute":
arch/x86/lib/inat.c:29: error: "inat_primary_table" undeclared (first use in this function)
arch/x86/lib/inat.c:29: error: (Each undeclared identifier is reported only once
arch/x86/lib/inat.c:29: error: for each function it appears in.)
arch/x86/lib/inat.c: In function "inat_get_escape_attribute":
arch/x86/lib/inat.c:44: error: "inat_escape_tables" undeclared (first use in this function)
arch/x86/lib/inat.c: In function "inat_get_group_attribute":
arch/x86/lib/inat.c:67: error: "inat_group_tables" undeclared (first use in this function)
arch/x86/lib/inat.c: In function "inat_get_avx_attribute":
arch/x86/lib/inat.c:85: error: "inat_avx_tables" undeclared (first use in this function)
make[1]: *** [arch/x86/lib/inat.o] Error 1
make: *** [arch/x86/lib] Error 2

Either CONFIG_KPROBES=n or 'apt-get install gawk' does the trick, but is
this intentional?

If it is, the following documentation patch should be applied.


From: Andy Isaacson <>
Date: Wed, 16 Dec 2009 15:51:30 -0800
Subject: [PATCH] Document requirement for gawk.

Signed-off-by: Andy Isaacson <>
Documentation/Changes | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/Documentation/Changes b/Documentation/Changes
index 6d0f1ef..8d55162 100644
--- a/Documentation/Changes
+++ b/Documentation/Changes
@@ -49,6 +49,7 @@ o oprofile 0.9 # oprofiled --version
o udev 081 # udevinfo -V
o grub 0.93 # grub --version
o mcelog 0.6
+o gawk 3.0 # awk --version

Kernel compilation

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