[Xen-devel] Re: linker error with xen-tools (tip)

[Dulloor <dulloor@xxxxxxxxx>]

Also, "make clean" doesn't help either. The error goes away only on a
(trial and error) reordering of my patch set.

-dulloor

On Thu, Apr 1, 2010 at 1:57 AM, Dulloor <dulloor@xxxxxxxxx> wrote:
> With my modifications to libxc(adding/modifying a few files), I get
> the following error, but only intermittently. There are no compilation
> errors in my code. And, also interestingly when I add back the same
> changes piece-meal and in a different order, this linker error
> disappears. What could be the reason ?
>
> gcc  -O2 -fomit-frame-pointer -m64 -fno-strict-aliasing -std=gnu99
> -Wall -Wstrict-prototypes -Wno-unused-value
> -Wdeclaration-after-statement  -D__XEN_TOOLS__ -MMD -MF
> .loadpolicy.o.d  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE  -Wall -g
> -Werror  -I../../../tools/libxc -I../../../tools/include
> -I../../../tools/flask/libflask/include -I. -c -o loadpolicy.o
> loadpolicy.c
> gcc -O2 -fomit-frame-pointer -m64 -fno-strict-aliasing -std=gnu99
> -Wall -Wstrict-prototypes -Wno-unused-value
> -Wdeclaration-after-statement  -D__XEN_TOOLS__ -MMD -MF
> .flask-loadpolicy.d  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE  -Wall
> -g -Werror  -I../../../tools/libxc -I../../../tools/include
> -I../../../tools/flask/libflask/include -I.     -L../../../tools/libxc
> -L../../../tools/flask/libflask loadpolicy.o   -L. -lflask
> -L../../../tools/libxc -lxenctrl -o flask-loadpolicy
> ../../../tools/libxc/libxenctrl.so: undefined reference to `xc_dom_printf'
> collect2: ld returned 1 exit status
> make[5]: *** [flask-loadpolicy] Error 1
> make[5]: Leaving directory
> `/data/devel/xen-devel/xen-unstable-numa-tip.hg/tools/flask/utils'
> make[4]: *** [subdir-install-utils] Error 2
> make[4]: Leaving directory
> `/data/devel/xen-devel/xen-unstable-numa-tip.hg/tools/flask'
> make[3]: *** [subdirs-install] Error 2
> make[3]: Leaving directory
> `/data/devel/xen-devel/xen-unstable-numa-tip.hg/tools/flask'
> make[2]: *** [subdir-install-flask] Error 2
> make[2]: Leaving directory
> `/data/devel/xen-devel/xen-unstable-numa-tip.hg/tools'
> make[1]: *** [subdirs-install] Error 2
> make[1]: Leaving directory
> `/data/devel/xen-devel/xen-unstable-numa-tip.hg/tools'
> make: *** [install-tools] Error 2
>

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