Re: [PATCH] kvm-kmod: x86: Drop duplicate external-module-compat objects

[Jan Kiszka <jan.kiszka@web.de>]

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Chris Wright wrote:
> * Jan Kiszka (jan.kiszka@web.de) wrote:
>> This redundancy breaks subtly when building against recent OpenSUSE
>> kernels.
> 
> What breaks?

When building external-module-compat.c, linux/scripts/basic/hash somehow
gets called with a multi-word modname. It complains via its usage, and
gcc then tries to compile files it derives from that output:

  gcc -Wp,-MD,/data/kvm-kmod/x86/../.external-module-compat.o.d  -nostdinc -isystem /usr/lib64/gcc/x86_64-suse-linux/4.3/include -D__KERNEL__ -I/data/kvm-kmod/include -Iinclude    -Iinclude2 -I/lib/modules/2.6.27.21-0.1-default/source/include  -Iarch/x86/include -I/data/kvm-kmod/include-compat      -include include/linux/autoconf.h       -include /data/kvm-kmod/x86/external-module-compat.h   -I/data/kvm-kmod/x86 -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Os -m64 -mtune=generic -mno-red-zone -mcmodel=kernel -funit-at-a-time -maccumulate-outgoing-args -DCONFIG_AS_CFI=1 -DCONFIG_AS_CFI_SIGNAL_FRAME=1 -pipe -Wno-sign-compare -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -I/usr/src/linux-2.6.27.21-0.1/include/asm-x86/mach-default -Iinclude/asm-x86/mach-default -fno-stack-protector -fomit-frame-pointer -fasynchronous-unwind-tables -g -Wdeclaration-after-statement -Wno-pointer-sign -fwrapv -DMODULE -D"KBUILD_STR(
s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(external_module_compat)"  -D"DEBUG_HASH=Usage: ./scripts/basic/hash <djb2|r5> <modname>" -D"DEBUG_HASH2=Usage: ./scripts/basic/hash <djb2|r5> <modname>" -c -o /data/kvm-kmod/x86/../.tmp_external-module-compat.o /data/kvm-kmod/x86/../external-module-compat.c
gcc: <djb2|r5>: Datei oder Verzeichnis nicht gefunden
gcc: <modname>: Datei oder Verzeichnis nicht gefunden
gcc: <djb2|r5>: Datei oder Verzeichnis nicht gefunden
gcc: <modname>: Datei oder Verzeichnis nicht gefunden

Jan


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