NetBSD Problem Report #52817

From o.vd.linden@quicknet.nl  Wed Dec 13 19:35:23 2017
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Message-Id: <20171213193512.GA27934@sheep>
Date: Wed, 13 Dec 2017 20:35:12 +0100
From: Onno van der Linden <o.vd.linden@quicknet.nl>
To: gnats-bugs@netbsd.org
Subject: devel/lldb build on i386 fails with undefined reference

>Number:         52817
>Category:       pkg
>Synopsis:       lldb build on i386 fails with undefined reference
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Dec 13 19:40:00 +0000 2017
>Last-Modified:  Thu Dec 14 17:25:00 +0000 2017
>Originator:     Onno van der Linden
>Release:        NetBSD 8.99.8
>Organization:
>Environment:
System: NetBSD sheep 8.99.8 NetBSD 8.99.8 (SHEEPKMS) #1: Mon Dec 4 16:43:49 CET 2017 onno@sheep:/usr/src/sys/arch/i386/compile/SHEEPKMS i386
Architecture: i386
Machine: i386
>Description:
Building devel/lldb from pkgsrc results in multiple undefined reference errors while linking  CXX shared library ../../lib/liblldb.so
For example:
Timer.cpp:(.text._ZN12lldb_private5Timer8CategoryC2EPKc+0x39): undefined reference to `__atomic_store_8'
and there's several more with both __atomic_store_8 and __atomic_load_8
>How-To-Repeat:
build devel/lldb on 32-bit intel
	<code/input/activities to reproduce the problem (multiple lines)>
>Fix:
quick & dirty fix is to put an extra -latomic_ops somewhere.

>Audit-Trail:
From: Onno van der Linden <o.vd.linden@quicknet.nl>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: pkg/52817: devel/lldb build on i386 fails with undefined
 reference
Date: Wed, 13 Dec 2017 21:25:28 +0100

 Probably devel/lldb/Makefile needs something like

 .if ${MACHINE_ARCH} == "i386" 
 CFLAGS+=        -march=i586
 CXXFLAGS+=      -march=i586
 .endif


From: Kamil Rytarowski <n54@gmx.com>
To: gnats-bugs@NetBSD.org, Joerg Sonnenberger <joerg@netbsd.org>
Cc: 
Subject: Re: pkg/52817: devel/lldb build on i386 fails with undefined
 reference
Date: Wed, 13 Dec 2017 22:55:08 +0100

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 From: Kamil Rytarowski <n54@gmx.com>
 To: gnats-bugs@NetBSD.org, Joerg Sonnenberger <joerg@netbsd.org>
 Message-ID: <cbbec9fe-13f2-20c9-6338-d1351a3d339e@gmx.com>
 Subject: Re: pkg/52817: devel/lldb build on i386 fails with undefined
  reference
 References: <pr-pkg-52817@gnats.netbsd.org> <20171213193512.GA27934@sheep>
  <20171213213500.B7C1E7A1FF@mollari.NetBSD.org>
 In-Reply-To: <20171213213500.B7C1E7A1FF@mollari.NetBSD.org>

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 On 13.12.2017 22:35, Onno van der Linden wrote:
 > The following reply was made to PR pkg/52817; it has been noted by GNAT=
 S.
 >=20
 > From: Onno van der Linden <o.vd.linden@quicknet.nl>
 > To: gnats-bugs@NetBSD.org
 > Cc:=20
 > Subject: Re: pkg/52817: devel/lldb build on i386 fails with undefined
 >  reference
 > Date: Wed, 13 Dec 2017 21:25:28 +0100
 >=20
 >  Probably devel/lldb/Makefile needs something like
 > =20
 >  .if ${MACHINE_ARCH} =3D=3D "i386"=20
 >  CFLAGS+=3D        -march=3Di586
 >  CXXFLAGS+=3D      -march=3Di586
 >  .endif
 > =20
 > =20
 >=20

 Joerg has noted this problem and already notified upstream about it,
 however so far nothing has been fixed as far as I can tell.


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From: Onno van der Linden <o.vd.linden@quicknet.nl>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: pkg/52817: devel/lldb build on i386 fails with undefined
 reference
Date: Thu, 14 Dec 2017 17:15:25 +0100

 So the march=i586 hack works for the atomic operation functions
 that had gotten the undefined reference errors.

 However, another case of undefined reference is next:

 [ 90%] Linking CXX executable ../../bin/lldb-server
 /usr/obj/devel/lldb/work/.buildlink/lib/libpython2.7.so: warning: warning: tmpnam() possibly used unsafely, use mkstemp() or mkdtemp()
 /usr/obj/devel/lldb/work/.buildlink/lib/libpython2.7.so: warning: warning: tempnam() possibly used unsafely, use mkstemp() or mkdtemp()
 ../../lib/liblldbPluginProcessNetBSD.a(NativeThreadNetBSD.cpp.o): In function `lldb_private::process_netbsd::NativeThreadNetBSD::GetRegisterContext()':
 NativeThreadNetBSD.cpp:(.text._ZN12lldb_private14process_netbsd18NativeThreadNetBSD18GetRegisterContextEv+0x76): undefined reference to `lldb_private::process_netbsd::NativeRegisterContextNetBSD::CreateHostNativeRegisterContextNetBSD(lldb_private::ArchSpec const&, lldb_private::NativeThreadProtocol&, unsigned int)'

 No idea yet where CreateHostNativeRegisterContextNetBSD should come from.

 Onno

From: Onno van der Linden <o.vd.linden@quicknet.nl>
To: gnats-bugs@netbsd.org
Cc: 
Subject: Re: pkg/52817: devel/lldb build on i386 fails with undefined
 reference
Date: Thu, 14 Dec 2017 18:16:53 +0100

 I wrote:
 >  No idea yet where CreateHostNativeRegisterContextNetBSD should come from.

 From the non existant ./source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86_32.cpp or whatever the 32-bit x86 support file should be named.

 Until that one is available a condition in Makefile for 32-bit x86
 not being supported would probably be sufficient.

 Onno

From: Kamil Rytarowski <n54@gmx.com>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: pkg/52817: devel/lldb build on i386 fails with undefined
 reference
Date: Thu, 14 Dec 2017 18:21:25 +0100

 This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
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  protected-headers="v1"
 From: Kamil Rytarowski <n54@gmx.com>
 To: gnats-bugs@NetBSD.org
 Message-ID: <1369f116-5b85-c1e4-e231-fc0eaf26f8cc@gmx.com>
 Subject: Re: pkg/52817: devel/lldb build on i386 fails with undefined
  reference
 References: <pr-pkg-52817@gnats.netbsd.org> <20171213193512.GA27934@sheep>
  <20171214162001.3B31F7A1E7@mollari.NetBSD.org>
 In-Reply-To: <20171214162001.3B31F7A1E7@mollari.NetBSD.org>

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 On 14.12.2017 17:20, Onno van der Linden wrote:
 > The following reply was made to PR pkg/52817; it has been noted by GNAT=
 S.
 >=20
 > From: Onno van der Linden <o.vd.linden@quicknet.nl>
 > To: gnats-bugs@NetBSD.org
 > Cc:=20
 > Subject: Re: pkg/52817: devel/lldb build on i386 fails with undefined
 >  reference
 > Date: Thu, 14 Dec 2017 17:15:25 +0100
 >=20
 >  So the march=3Di586 hack works for the atomic operation functions
 >  that had gotten the undefined reference errors.
 > =20
 >  However, another case of undefined reference is next:
 > =20
 >  [ 90%] Linking CXX executable ../../bin/lldb-server
 >  /usr/obj/devel/lldb/work/.buildlink/lib/libpython2.7.so: warning: warn=
 ing: tmpnam() possibly used unsafely, use mkstemp() or mkdtemp()
 >  /usr/obj/devel/lldb/work/.buildlink/lib/libpython2.7.so: warning: warn=
 ing: tempnam() possibly used unsafely, use mkstemp() or mkdtemp()
 >  ../../lib/liblldbPluginProcessNetBSD.a(NativeThreadNetBSD.cpp.o): In f=
 unction `lldb_private::process_netbsd::NativeThreadNetBSD::GetRegisterCon=
 text()':
 >  NativeThreadNetBSD.cpp:(.text._ZN12lldb_private14process_netbsd18Nativ=
 eThreadNetBSD18GetRegisterContextEv+0x76): undefined reference to `lldb_p=
 rivate::process_netbsd::NativeRegisterContextNetBSD::CreateHostNativeRegi=
 sterContextNetBSD(lldb_private::ArchSpec const&, lldb_private::NativeThre=
 adProtocol&, unsigned int)'
 > =20
 >  No idea yet where CreateHostNativeRegisterContextNetBSD should come fr=
 om.
 > =20
 >  Onno
 > =20
 >=20

 The 32-bit x86 support has not been developed so far. It shouldn't be
 far away, mostly reusing the existing x86_64 code.

 Also LLDB isn't finished and there are ptrace(2) issues under the neath
 so better to give this debugger more time.

 Personally, I don't plan to add 32-bit support any time soon. Help in
 development is welcome!


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