Re: segfaults with cyrus-imapd 3.0.9 on latest arch linux

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Am 19.03.19 um 19:47 schrieb Jason L Tibbitts III:
"AP" == Andreas Piesk <a.piesk@xxxxxxxxxxx> writes:

AP> Hello list, i'm trying to get cyrus-imapd 3.0.9 (testet 3.0.8 too)
AP> running on latest arch linux. Here's the configure summary:

AP> External dependencies: ldap: no openssl: yes zlib: yes pcre: yes

AP> #6 0x00007fc4aa385050 re_acquire_state_context (libc.so.6)
AP> #7 0x00007fc4aa3907d4 re_compile_internal (libc.so.6)
AP> #8 0x00007fc4aa391511 regcomp (libc.so.6)

You have pcre enabled but you are calling glibc regex functions.  You
may wish to double check that you are linking properly.  Fedora went
through a similar issue a while back when --Wl,--as-needed was added to
the default set of compiler flags, which caused subtle variations in the
link order.  The end result was that Fedora picked up a set of pcre
patches similar to what some other distros have to avoid duplicating the
glibc symbol names.

These are the default LDFLAGS Arch Linux uses:

LDFLAGS="-Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now"

If I link without '--as-needed' crydump etc. do work without segfaulting.

"configure --disable-pcre" does not work:

lib/glob.h:57:5: error: unknown type name ‘regex_t’

I have no idea how to change the linkage order to put pcre before glibc (don't know if and how this is possible, I'm a hardware guy), I'm just building with

autoreconf -f
./configure

so I think my only option is to drop '--as-needed' from LDFLAGS and execute

./configure LDFLAGS=${LDFLAGS/,--as-needed/}

Thanks for pointing me in the right direction, highly appreciated.

Best Regards,
-ap

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