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Bug 230617 - Kernel spec file 'sublevel' can break compile if sublevel is not integer
Kernel spec file 'sublevel' can break compile if sublevel is not integer
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel (Show other bugs)
All Linux
medium Severity low
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Assigned To: Kernel Maintainer List
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2007-03-01 14:47 EST by Matthew Callaway
Modified: 2007-11-30 17:07 EST (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2007-03-07 16:13:19 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Matthew Callaway 2007-03-01 14:47:04 EST
Description of problem:

If you set 'sublevel' to a non-integer value, say 19.3 or 20.1, you will break
the toplevel kernel Makefile, and cause failure to compile.  Specifically, in
the Makefile:

define filechk_version.h
        (echo \#define LINUX_VERSION_CODE $(shell                             \
        expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL));     \
        echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)

This 'expr' will fail with non-numeric value in $SUBLEVEL.  This leaves
LINUX_VERSION_CODE undefined, and causes syntax errors.  The first one appears
in drivers/usb/core/hcd.c line 133.

Not a big deal for your products, but someday you might find yourself building a
kernel of version a.b.c.d and wonder why it doesn't compile.

Version-Release number of selected component (if applicable):

kernel 2.6.9 specfile.

How reproducible:


Steps to Reproduce:
1. Try to build a newer kernel with sublevel 19.3 or 20.1.
2. rpmbuild -ba --target i686 kernel-2.6.spec
Actual results:

Expected results:

Additional info:
Comment 1 Jason Baron 2007-03-07 16:13:19 EST
sublevel will not change over the life of rhel4 it is fixed at '9'. thus,
although it would be nice to make the code more general i don't see this as a bug.

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