Quoting Andrew Deason <[email protected]>:
On Mon, 10 Jan 2011 21:29:57 -0500
[email protected] wrote:
r...@sheevaplug-debian:~# echo '' | flex --version
flex 2.5.35
bash: echo: write error: Broken pipe
r...@sheevaplug-debian:~#
It looks like a bug in bash on arm. It worked with zsh and it worked
with bash an i586. :P It doesnt appear to be an alignment error!
bash version? And does that actually affect the value of "$?" ?
I think i recall seeing this before possibly with the Fedora 12 arm
vm. I ran update but it wasn't fixed. So it might be need to be
updated in the debian-arm specific stuff.
It is bash GNU bash, version 3.2.39(1)
r...@sheevaplug-debian:~# cat test.sh
#!/bin/bash
echo '' | /usr/bin/flex --version
echo $?
r...@sheevaplug-debian:~# ./test.sh
flex 2.5.35
r...@sheevaplug-debian:~# echo '' | /usr/bin/flex --version
flex 2.5.35
bash: echo: write error: Broken pipe
Unlike:
gcc -fPIC -g -O -I/mnta/openafs-pre1.6.0/openafs-1.6.0pre1/src/config
-I/mnta/openafs-pre1.6.0/openafs-1.6.0pre1/include -I. -I.
-D_LARGEFILE64_SOURCE -Wall -Wcast-align -Wstrict-prototypes
-Wold-style-definition -Wpointer-arith -Wall -Wstrict-prototypes
-Wold-style-definition -Werror -fdiagnostics-show-option
-Wpointer-arith -c cbc_encrypt.c
cc1: warnings being treated as errors
cbc_encrypt.c: In function ?des_cbc_encrypt?:
cbc_encrypt.c:67: error: cast increases required alignment of target
type [-Wcast-align]
make[3]: *** [cbc_encrypt.o] Error 1
make[3]: Leaving directory
`/mnta/openafs-pre1.6.0/openafs-1.6.0pre1/src/des'
make[2]: *** [des] Error 2
The lack of a '#define MUSTALIGN' in conf-arm-linux.h suggests this is
not indicative of an actual problem, but I wouldn't know.
I added the -Wcast-align flag that might be broken. I also added the
#define MUSTALIGN' in conf-arm-linux.h but I don't think it is getting
that far yet. Im still looking at it.
Some ARM processors don't have hardware alignment. It is choking on
the gcc's cast-align flag.
The alignment issues don't show up in the virtual machines because the
Intel hardware underneath "takes care of" the issue.
Im just not sure the easiest way to catch these or if they have all
been caught as this isn't the only platform that can have alignment
issues.
>> > And im not sure why im checking pentium:
>>
>> > checking your AFS sysname... arm_linux26
>> > checking if gcc accepts -march=pentium... yes
[..]
> It should for the kernel module configure (isn't that a separate build
> for Debian packages?). This is OPENAFS_GCC_SUPPORTS_MARCH.
It looks like OPENAFS_GCC_SUPPORTS_MARCH is for i386/pentium only.
I don't see any ppc, alpha, mips, sparc or anything else along those
lines in the ac files.
The results of it only impact that, yes, but currently it is run for
everything linux.
Right.
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