Re: strange "Exec format error" (gcc4.2 suspicious)

On Sun, 20 May 2007, Kris Kennaway wrote:

> On Sun, May 20, 2007 at 09:07:24PM -0400, Wes Morgan wrote:
>> On Sun, 20 May 2007, Alexander Kabaev wrote:
>>
>>> On Sun, 20 May 2007 21:30:55 +0200
>>> Harald Schmalzbauer <h.schmalzbauer_at_omnisec.de> wrote:
>>>
>>>> Am Sonntag, 20. Mai 2007 schrieb Dag-Erling Sm?rgrav:
>>>>> Harald Schmalzbauer <h.schmalzbauer_at_omnisec.de> writes:
>>>>>> I compiled samba on a fresh -current and I'm seeing strange
>>>>>> errors. When I try to execute 'net' I get this error:
>>>>>> /usr/local/bin/net: Exec format error. Binary file not executable.
>>>>>
>>>>> If you're running amd64, there was briefly a bug that caused the
>>>>> 32-bit
>>>>
>>>> It was my very first thought too, but it's i386. It's a xeon 3050
>>>> (core2, thus EM64-T) processor but world alwys was i386 and also is
>>>> for that jail. Could it be possible that there's any runtime
>>>> detection which made me 64-bit binaries on a 32-bit base system?
>>>>
>>> Samba auto-detected -fpie support in GCC 4.3 and tried to use it.
>>> FreeBSD kernel does not know how to deal with binaries created by this
>>> option yet, so it freaks out.
>>>
>>> Add --disable-pie to CONFIGURE_ARGS in sambe3 port for now.
>>
>> This same problem exists for kdelibs3, maybe other kde ports
>> (investigating now).
>
> Are you sure, they do not appear to compile with -fPIE.

kdelibs and kdebase compile several binaries with -pie:

start_kdeinit (kdelibs)
kgrantpty (kdelibs)
kpac_dhcp_helper (kdelibs)
kcheckpass (kdebase)
kdesud (kdebase)

Running "find . -name Makefile | xargs grep '(KDE_USE_PIE)'" will track 
them down for you:

./kcheckpass/Makefile:kcheckpass_LDFLAGS = $(KDE_USE_PIE) $(all_libraries)

Passing --disable-pie forces KDE_USE_PIE blank as would be expected. I 
haven't searched any other of the kde ports yet.

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