On Mon, Mar 17, 2014 at 05:10:16PM +0100, Gilles Chanteperdrix wrote: > On 03/17/2014 04:59 PM, Lennart Sorensen wrote: > >I saw armhf had been added to debian/control in the xenomai-2.6 > >tree, and since I am trying to get it running there I figured it was > >worth pulling that version. Unfortunately it fails to build with the > >same error as 2.6.3 does. > > > >So any idea what this error means: > > > >assert_context.c: In function 'assert_nrt_inner': > >assert_context.c:43:1: error: r7 cannot be used in asm here > > > >I am compiling on Debian wheezy armhf. > > > >The command line it used appears to be: /bin/bash ../../../libtool > >--tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. > >-I../../../src/include -O2 -D_GNU_SOURCE -D_REENTRANT -Wall > >-Werror-implicit-function-declaration -pipe -D__XENO__ -D__IN_XENO__ > >-Wstrict-prototypes -I../../../include -D_FORTIFY_SOURCE=2 -g -O2 > >-fstack-protector --param=ssp-buffer-size=4 -Wformat > >-Werror=format-security -D_FORTIFY_SOURCE=2 -fno-omit-frame-pointer > >-MT libxenomai_la-assert_context.lo -MD -MP -MF > >.deps/libxenomai_la-assert_context.Tpo -c -o > >libxenomai_la-assert_context.lo `test -f 'assert_context.c' || echo > >'./'`assert_context.c > > > >Debian armhf uses thumb2 mode by default targeting armv7 with > >VFP3-D16, in case that is relevant. > > > > Could you show us the assembly that the assembler is trying to assemble? > (gcc -S) > > I do not see anything at line 43, but the end of the function > itself, but from the look of it, I would say that your build options > are incompatible with our macro syscalls. Most probably the > -fno-omit-frame-pointer, as I believe r7 is the frame-pointer with > thumb (this would have to be checked). If that is true, it will be > difficult to fix, as there is no way to detect (at least, last time > I checked on x86) at compilation time if omit-frame-pointer is > enabled or not, to use different syscall macros. > > FWIW, as I already said, I routinely compile Xenomai with armhf > compilers, and with default options, I have no problems.
Hmm, so Debian's version of debian/rules has this: # necessary from GCC 4.6 on CFLAGS += -fno-omit-frame-pointer I wonder if they are wrong. -- Len Sorensen _______________________________________________ Xenomai mailing list [email protected] http://www.xenomai.org/mailman/listinfo/xenomai
