Re: [Libreoffice] [PATCH] fixing some errors when building with clang on linux

On 01/02/2012 08:11 PM, August Sodora wrote:
> For the past couple of weeks I've been trying to build LO with clang
> on linux and have hit a couple of obstacles. I can't get the internal
> nss to build and I didn't even try to enable mozilla because it fails
> to build on ubuntu anyway. The -Qunused-arguments is really to silence
> warnings from clang that -ggdb2 and other options are not recognized.
> Ultimately, I can complete make with

Sounds great.  My attempts always failed due to 
<http://llvm.org/bugs/show_bug.cgi?id=11250> "no code emitted for 
virtual inline function inherited indirectly from class template". 
Interesting that that does not hit you, too -- or do you somehow disable 
hidden visibility?

From my past attempts (unxlngx6) I still have a patch file around that 
is attached.  Maybe it is useful (I always intended to follow up, but 
somehow never found the time).  It does contain a fix for nss (assembler 
comments needing to start with "#" instead of "/").

> The first patch attached fixes an error related to implicitly
> converting constants to a type that should be too small to hold the
> constant. I've added static_casts to make the situation a lot more
> explicit which also suppresses the error, I'm just not sure that this
> is a real solution.

The literal 0x80000000 that is used to initialize sal_Int32 
SvxMSDffHandle.nRangeYMin at 
svx/source/customshapes/EnhancedCustomShapeGeometry.cxx:164 etc. is 
probably better replaced with SAL_MIN_INT32.  Checking all the various 
places, what the best fix would be (change the relevant var. from 
sal_Int32 to sal_uInt32, etc.) would surely be tedious...

> The second and third patches simply fix warnings that flood the screen
> so often that it makes it difficult to diagnose other problems.

Also see my attached patch.  (I prefer removing names of unused 
parameters, instead of adding "(void)x;" lines; also, additional patches 
should go to the end of PATCH_FILES, as "dmake create_patch" creates 
them against all previous patches already applied.)

Stephan

 basebmp/inc/basebmp/bitmapdevice.hxx       |    2 +-
 boost/boost_1_44_0-clang.patch             |   39 ++++++
 boost/makefile.mk                          |    2 +
 cppunit/cppunit-1.12.1-clang.patch         |   11 ++
 cppunit/makefile.mk                        |    2 +-
 libcmis/libcmis-0.1.0-clang.patch          |   10 ++
 libcmis/makefile.mk                        |    2 +-
 nss/makefile.mk                            |    3 +-
 nss/nss-3.12.8-with-nspr-4.8.6-clang.patch |  205 ++++++++++++++++++++++++++++
 openssl/makefile.mk                        |    2 +-
 openssl/openssl-0.9.8o-clang.patch         |   27 ++++
 python/makefile.mk                         |    4 +-
 12 files changed, 303 insertions(+), 6 deletions(-)

diff --git a/basebmp/inc/basebmp/bitmapdevice.hxx b/basebmp/inc/basebmp/bitmapdevice.hxx
index ca11292..2807b7d 100644
--- a/basebmp/inc/basebmp/bitmapdevice.hxx
+++ b/basebmp/inc/basebmp/bitmapdevice.hxx
@@ -56,7 +56,7 @@ namespace basebmp
 // Temporary. Use like the tools color object
 class Color;
 typedef boost::shared_ptr< class BitmapDevice >                BitmapDeviceSharedPtr;
-typedef boost::shared_ptr< class IBitmapDeviceDamageTracker >  IBitmapDeviceDamageTrackerSharedPtr;
+typedef boost::shared_ptr< struct IBitmapDeviceDamageTracker >  
IBitmapDeviceDamageTrackerSharedPtr;
 typedef boost::shared_array< sal_uInt8 >                       RawMemorySharedArray;
 typedef boost::shared_ptr< const std::vector<Color> >          PaletteMemorySharedVector;
 
diff --git a/boost/boost_1_44_0-clang.patch b/boost/boost_1_44_0-clang.patch
new file mode 100644
index 0000000..222ed86
--- /dev/null
+++ b/boost/boost_1_44_0-clang.patch
@@ -0,0 +1,39 @@
+--- misc/boost_1_44_0/boost/optional/optional.hpp      2011-12-02 21:01:18.833604597 +0100
++++ misc/build/boost_1_44_0/boost/optional/optional.hpp        2011-12-02 21:01:00.767778299 +0100
+@@ -846,12 +846,12 @@
+ 
+ template<class T>
+ inline
+-bool operator == ( none_t x, optional<T> const& y )
++bool operator == ( none_t, optional<T> const& y )
+ { return equal_pointees(optional<T>() ,y); }
+ 
+ template<class T>
+ inline
+-bool operator < ( none_t x, optional<T> const& y )
++bool operator < ( none_t, optional<T> const& y )
+ { return less_pointees(optional<T>() ,y); }
+ 
+ template<class T>
+--- misc/boost_1_44_0/boost/ptr_container/detail/default_deleter.hpp   2008-03-22 
22:45:55.000000000 +0100
++++ misc/build/boost_1_44_0/boost/ptr_container/detail/default_deleter.hpp     2011-12-02 
20:14:04.606949179 +0100
+@@ -61,7 +61,7 @@
+ { 
+     default_deleter() { }
+     template<typename TT>
+-    default_deleter(default_deleter<TT> tt) { }
++    default_deleter(default_deleter<TT>) { }
+ };
+ 
+ } } } // End namespaces ptr_container_detail, move_ptrs, boost.
+--- misc/boost_1_44_0/boost/ptr_container/ptr_sequence_adapter.hpp     2011-12-02 
20:15:30.747191950 +0100
++++ misc/build/boost_1_44_0/boost/ptr_container/ptr_sequence_adapter.hpp       2011-12-02 
20:14:35.148680353 +0100
+@@ -664,7 +664,7 @@
+             
+         }
+ 
+-        void range_check_impl( iterator first, iterator last, 
++        void range_check_impl( iterator, iterator,
+                                std::bidirectional_iterator_tag )
+         { /* do nothing */ }
+ 
diff --git a/boost/makefile.mk b/boost/makefile.mk
index 3ba21d8..27e4ae9 100644
--- a/boost/makefile.mk
+++ b/boost/makefile.mk
@@ -62,6 +62,8 @@ PATCH_FILES+=boost.gcc47679.patch
 
 PATCH_FILES+=boost.windows.patch
 
+PATCH_FILES+=boost_1_44_0-clang.patch
+
 ADDITIONAL_FILES= \
     libs/thread/src/win32/makefile.mk \
        libs/date_time/src/gregorian/makefile.mk
diff --git a/cppunit/cppunit-1.12.1-clang.patch b/cppunit/cppunit-1.12.1-clang.patch
new file mode 100644
index 0000000..22a097c
--- /dev/null
+++ b/cppunit/cppunit-1.12.1-clang.patch
@@ -0,0 +1,11 @@
+--- misc/cppunit-1.12.1/include/cppunit/extensions/ExceptionTestCaseDecorator.h        2003-03-15 
09:55:28.000000000 +0100
++++ misc/build/cppunit-1.12.1/include/cppunit/extensions/ExceptionTestCaseDecorator.h  2011-12-02 
20:45:18.929816024 +0100
+@@ -92,7 +92,7 @@
+    *
+    * Should be overriden to check the exception.
+    */
+-  virtual void checkException( ExpectedExceptionType &e )
++  virtual void checkException( ExpectedExceptionType & )
+   {
+   }
+ };
diff --git a/cppunit/makefile.mk b/cppunit/makefile.mk
index 551a0ea..ed4226a 100644
--- a/cppunit/makefile.mk
+++ b/cppunit/makefile.mk
@@ -34,7 +34,7 @@ TARFILE_MD5=bd30e9cf5523cdfc019b94f5e1d7fd19
     # from <https://sourceforge.net/projects/cppunit/files/cppunit/1.12.1/
     #  cppunit-1.12.1.tar.gz/download>
 
-PATCH_FILES = solarisfinite.patch warnings.patch windows.patch ldflags.patch aix.patch 
avoid-synthetised-destructor.patch ios.patch
+PATCH_FILES = solarisfinite.patch warnings.patch windows.patch ldflags.patch aix.patch 
avoid-synthetised-destructor.patch ios.patch cppunit-1.12.1-clang.patch
     # solarisfinite.patch: see <https://sourceforge.net/tracker/?func=detail&;
     #  aid=2912590&group_id=11795&atid=311795>
     # warnings.patch: see <https://sourceforge.net/tracker/?func=detail&;
diff --git a/libcmis/libcmis-0.1.0-clang.patch b/libcmis/libcmis-0.1.0-clang.patch
new file mode 100644
index 0000000..00d8eb2
--- /dev/null
+++ b/libcmis/libcmis-0.1.0-clang.patch
@@ -0,0 +1,10 @@
+--- misc/libcmis-0.1.0/src/libcmis/session.hxx 2011-09-30 20:38:39.000000000 +0200
++++ misc/build/libcmis-0.1.0/src/libcmis/session.hxx   2011-10-18 22:17:32.152740249 +0200
+@@ -36,6 +36,7 @@
+     class Session
+     {
+         public:
++            virtual ~Session() {}
+ 
+             /** Get the Root folder of the repository
+               */
diff --git a/libcmis/makefile.mk b/libcmis/makefile.mk
index df93424..07ca14c 100644
--- a/libcmis/makefile.mk
+++ b/libcmis/makefile.mk
@@ -45,7 +45,7 @@ TARFILE_NAME=libcmis-0.1.0
 TARFILE_MD5=7c2549f6b0a8bb604e6c4c729ffdcfe6
 ADDITIONAL_FILES=src$/libcmis$/makefile.mk
 
-PATCH_FILES=$(TARFILE_NAME).patch
+PATCH_FILES=$(TARFILE_NAME).patch libcmis-0.1.0-clang.patch
 
 BUILD_ACTION=dmake $(MFLAGS) $(CALLMACROS)
 BUILD_DIR=src$/libcmis
diff --git a/nss/makefile.mk b/nss/makefile.mk
index bc7b827..2bc170f 100644
--- a/nss/makefile.mk
+++ b/nss/makefile.mk
@@ -48,7 +48,8 @@ VER_PATCH=8
 TARFILE_NAME=nss-$(VER_MAJOR).$(VER_MINOR).$(VER_PATCH)-with-nspr-4.8.6
 TARFILE_MD5=71474203939fafbe271e1263e61d083e
 TARFILE_ROOTDIR=nss-$(VER_MAJOR).$(VER_MINOR).$(VER_PATCH)
-PATCH_FILES=nss.patch nss.aix.patch nss-config.patch nss-linux3.patch
+PATCH_FILES=nss.patch nss.aix.patch nss-config.patch nss-linux3.patch \
+    nss-3.12.8-with-nspr-4.8.6-clang.patch
 
 .IF "$(OS)"=="MACOSX"
 PATCH_FILES+=nss_macosx.patch
diff --git a/nss/nss-3.12.8-with-nspr-4.8.6-clang.patch b/nss/nss-3.12.8-with-nspr-4.8.6-clang.patch
new file mode 100644
index 0000000..e3883d1
--- /dev/null
+++ b/nss/nss-3.12.8-with-nspr-4.8.6-clang.patch
@@ -0,0 +1,205 @@
+--- misc/nss-3.12.8/mozilla/nsprpub/pr/src/md/unix/os_Linux_x86_64.s   2010-04-11 
07:47:01.000000000 +0200
++++ misc/build/nss-3.12.8/mozilla/nsprpub/pr/src/md/unix/os_Linux_x86_64.s     2011-12-02 
21:36:26.099370244 +0100
+@@ -1,46 +1,46 @@
+-/ -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+-/ 
+-/ ***** BEGIN LICENSE BLOCK *****
+-/ Version: MPL 1.1/GPL 2.0/LGPL 2.1
+-/
+-/ The contents of this file are subject to the Mozilla Public License Version
+-/ 1.1 (the "License"); you may not use this file except in compliance with
+-/ the License. You may obtain a copy of the License at
+-/ http://www.mozilla.org/MPL/
+-/
+-/ Software distributed under the License is distributed on an "AS IS" basis,
+-/ WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+-/ for the specific language governing rights and limitations under the
+-/ License.
+-/
+-/ The Original Code is the Netscape Portable Runtime (NSPR).
+-/
+-/ The Initial Developer of the Original Code is
+-/ Netscape Communications Corporation.
+-/ Portions created by the Initial Developer are Copyright (C) 2004
+-/ the Initial Developer. All Rights Reserved.
+-/
+-/ Contributor(s):
+-/
+-/ Alternatively, the contents of this file may be used under the terms of
+-/ either the GNU General Public License Version 2 or later (the "GPL"), or
+-/ the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+-/ in which case the provisions of the GPL or the LGPL are applicable instead
+-/ of those above. If you wish to allow use of your version of this file only
+-/ under the terms of either the GPL or the LGPL, and not to allow others to
+-/ use your version of this file under the terms of the MPL, indicate your
+-/ decision by deleting the provisions above and replace them with the notice
+-/ and other provisions required by the GPL or the LGPL. If you do not delete
+-/ the provisions above, a recipient may use your version of this file under
+-/ the terms of any one of the MPL, the GPL or the LGPL.
+-/
+-/ ***** END LICENSE BLOCK *****
++# -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
++#
++# ***** BEGIN LICENSE BLOCK *****
++# Version: MPL 1.1/GPL 2.0/LGPL 2.1
++#
++# The contents of this file are subject to the Mozilla Public License Version
++# 1.1 (the "License"); you may not use this file except in compliance with
++# the License. You may obtain a copy of the License at
++# http://www.mozilla.org/MPL/
++#
++# Software distributed under the License is distributed on an "AS IS" basis,
++# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
++# for the specific language governing rights and limitations under the
++# License.
++#
++# The Original Code is the Netscape Portable Runtime (NSPR).
++#
++# The Initial Developer of the Original Code is
++# Netscape Communications Corporation.
++# Portions created by the Initial Developer are Copyright (C) 2004
++# the Initial Developer. All Rights Reserved.
++#
++# Contributor(s):
++#
++# Alternatively, the contents of this file may be used under the terms of
++# either the GNU General Public License Version 2 or later (the "GPL"), or
++# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
++# in which case the provisions of the GPL or the LGPL are applicable instead
++# of those above. If you wish to allow use of your version of this file only
++# under the terms of either the GPL or the LGPL, and not to allow others to
++# use your version of this file under the terms of the MPL, indicate your
++# decision by deleting the provisions above and replace them with the notice
++# and other provisions required by the GPL or the LGPL. If you do not delete
++# the provisions above, a recipient may use your version of this file under
++# the terms of any one of the MPL, the GPL or the LGPL.
++#
++# ***** END LICENSE BLOCK *****
+ 
+-/ PRInt32 _PR_x86_64_AtomicIncrement(PRInt32 *val)
+-/
+-/ Atomically increment the integer pointed to by 'val' and return
+-/ the result of the increment.
+-/
++# PRInt32 _PR_x86_64_AtomicIncrement(PRInt32 *val)
++#
++# Atomically increment the integer pointed to by 'val' and return
++# the result of the increment.
++#
+     .text
+     .globl _PR_x86_64_AtomicIncrement
+     .type _PR_x86_64_AtomicIncrement, @function
+@@ -53,11 +53,11 @@
+     ret
+     .size _PR_x86_64_AtomicIncrement, .-_PR_x86_64_AtomicIncrement
+ 
+-/ PRInt32 _PR_x86_64_AtomicDecrement(PRInt32 *val)
+-/
+-/ Atomically decrement the integer pointed to by 'val' and return
+-/ the result of the decrement.
+-/
++# PRInt32 _PR_x86_64_AtomicDecrement(PRInt32 *val)
++#
++# Atomically decrement the integer pointed to by 'val' and return
++# the result of the decrement.
++#
+     .text
+     .globl _PR_x86_64_AtomicDecrement
+     .type _PR_x86_64_AtomicDecrement, @function
+@@ -70,11 +70,11 @@
+     ret
+     .size _PR_x86_64_AtomicDecrement, .-_PR_x86_64_AtomicDecrement
+ 
+-/ PRInt32 _PR_x86_64_AtomicSet(PRInt32 *val, PRInt32 newval)
+-/
+-/ Atomically set the integer pointed to by 'val' to the new
+-/ value 'newval' and return the old value.
+-/
++# PRInt32 _PR_x86_64_AtomicSet(PRInt32 *val, PRInt32 newval)
++#
++# Atomically set the integer pointed to by 'val' to the new
++# value 'newval' and return the old value.
++#
+     .text
+     .globl _PR_x86_64_AtomicSet
+     .type _PR_x86_64_AtomicSet, @function
+@@ -85,11 +85,11 @@
+     ret
+     .size _PR_x86_64_AtomicSet, .-_PR_x86_64_AtomicSet
+ 
+-/ PRInt32 _PR_x86_64_AtomicAdd(PRInt32 *ptr, PRInt32 val)
+-/
+-/ Atomically add 'val' to the integer pointed to by 'ptr'
+-/ and return the result of the addition.
+-/
++# PRInt32 _PR_x86_64_AtomicAdd(PRInt32 *ptr, PRInt32 val)
++#
++# Atomically add 'val' to the integer pointed to by 'ptr'
++# and return the result of the addition.
++#
+     .text
+     .globl _PR_x86_64_AtomicAdd
+     .type _PR_x86_64_AtomicAdd, @function
+@@ -102,5 +102,5 @@
+     ret
+     .size _PR_x86_64_AtomicAdd, .-_PR_x86_64_AtomicAdd
+ 
+-/ Magic indicating no need for an executable stack
++# Magic indicating no need for an executable stack
+ .section .note.GNU-stack, "", @progbits ; .previous
+--- misc/nss-3.12.8/mozilla/security/nss/lib/freebl/mpi/mp_comba.c     2008-03-09 
07:06:27.000000000 +0100
++++ misc/build/nss-3.12.8/mozilla/security/nss/lib/freebl/mpi/mp_comba.c       2011-10-18 
10:24:30.760363107 +0200
+@@ -49,7 +49,7 @@
+      "addq  %%rax,%0     \n\t"                            \
+      "adcq  %%rdx,%1     \n\t"                            \
+      "adcq  $0,%2        \n\t"                            \
+-     :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "g"(i), "g"(j)  
:"%rax","%rdx","%cc");
++     :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "g"(i), "g"(j)  
:"%rax","%rdx","cc");
+ 
+ 
+ 
+@@ -76,7 +76,7 @@
+      "addq  %%rax,%0     \n\t"                            \
+      "adcq  %%rdx,%1     \n\t"                            \
+      "adcq  $0,%2        \n\t"                            \
+-     :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "g"(i) :"%rax","%rdx","%cc");
++     :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "g"(i) :"%rax","%rdx","cc");
+ 
+ #define SQRADD2(i, j)                                     \
+ __asm__ (                                                     \
+@@ -88,7 +88,7 @@
+      "addq  %%rax,%0     \n\t"                            \
+      "adcq  %%rdx,%1     \n\t"                            \
+      "adcq  $0,%2        \n\t"                            \
+-     :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "g"(i), "g"(j)  
:"%rax","%rdx","%cc");
++     :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "g"(i), "g"(j)  
:"%rax","%rdx","cc");
+ 
+ #define SQRADDSC(i, j)                                    \
+ __asm__ (                                                     \
+@@ -97,7 +97,7 @@
+      "movq  %%rax,%0     \n\t"                            \
+      "movq  %%rdx,%1     \n\t"                            \
+      "xorq  %2,%2        \n\t"                            \
+-     :"=r"(sc0), "=r"(sc1), "=r"(sc2): "g"(i), "g"(j) :"%rax","%rdx","%cc");
++     :"=r"(sc0), "=r"(sc1), "=r"(sc2): "g"(i), "g"(j) :"%rax","%rdx","cc");
+ 
+ #define SQRADDAC(i, j)                                                         \
+ __asm__ (                                                     \
+@@ -106,7 +106,7 @@
+      "addq  %%rax,%0     \n\t"                            \
+      "adcq  %%rdx,%1     \n\t"                            \
+      "adcq  $0,%2        \n\t"                            \
+-     :"=r"(sc0), "=r"(sc1), "=r"(sc2): "0"(sc0), "1"(sc1), "2"(sc2), "g"(i), "g"(j) 
:"%rax","%rdx","%cc");
++     :"=r"(sc0), "=r"(sc1), "=r"(sc2): "0"(sc0), "1"(sc1), "2"(sc2), "g"(i), "g"(j) 
:"%rax","%rdx","cc");
+ 
+ #define SQRADDDB                                                               \
+ __asm__ (                                                     \
+@@ -116,7 +116,7 @@
+      "addq %6,%0         \n\t"                            \
+      "adcq %7,%1         \n\t"                            \
+      "adcq %8,%2         \n\t"                            \
+-     :"=&r"(c0), "=&r"(c1), "=&r"(c2) : "0"(c0), "1"(c1), "2"(c2), "r"(sc0), "r"(sc1), "r"(sc2) : 
"%cc");
++     :"=&r"(c0), "=&r"(c1), "=&r"(c2) : "0"(c0), "1"(c1), "2"(c2), "r"(sc0), "r"(sc1), "r"(sc2) : 
"cc");
+ 
+ 
+ 
diff --git a/openssl/makefile.mk b/openssl/makefile.mk
index f537838..2567f74 100644
--- a/openssl/makefile.mk
+++ b/openssl/makefile.mk
@@ -73,7 +73,7 @@ OUT2INC += include/openssl/*
 UNAME=$(shell uname)
 
 .IF "$(OS)" == "LINUX" || "$(OS)" == "FREEBSD" || "$(OS)" == "ANDROID"
-    PATCH_FILES=openssllnx.patch
+    PATCH_FILES=openssllnx.patch openssl-0.9.8o-clang.patch
     ADDITIONAL_FILES:= \
         libcrypto_OOo_0_9_8o.map \
         libssl_OOo_0_9_8o.map
diff --git a/openssl/openssl-0.9.8o-clang.patch b/openssl/openssl-0.9.8o-clang.patch
new file mode 100644
index 0000000..0dccf0f
--- /dev/null
+++ b/openssl/openssl-0.9.8o-clang.patch
@@ -0,0 +1,27 @@
+--- misc/openssl-0.9.8o/crypto/md32_common.h   2010-03-29 13:23:11.000000000 +0200
++++ misc/build/openssl-0.9.8o/crypto/md32_common.h     2011-12-02 21:42:41.665039759 +0100
+@@ -160,7 +160,7 @@
+    * what we need here...
+    *                                  <appro@fy.chalmers.se>
+    */
+-#  if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
++#  if defined(__i386) || defined(__i386__)
+ #   define ROTATE(a,n)        ({ register unsigned int ret;   \
+                               asm (                   \
+                               "roll %1,%0"            \
+@@ -169,6 +169,15 @@
+                               : "cc");                \
+                          ret;                         \
+                       })
++#  elif defined(__x86_64) || defined(__x86_64__)
++#   define ROTATE(a,n)        ({ register unsigned long ret;  \
++                              asm (                   \
++                              "rolq %1,%0"            \
++                              : "=r"(ret)             \
++                              : "I"(n), "0"(a)        \
++                              : "cc");                \
++                         ret;                         \
++                      })
+ #  elif defined(_ARCH_PPC) || defined(_ARCH_PPC64) || \
+       defined(__powerpc) || defined(__ppc__) || defined(__powerpc64__)
+ #   define ROTATE(a,n)        ({ register unsigned int ret;   \
diff --git a/python/makefile.mk b/python/makefile.mk
index 4f50ed3..33bd88c 100644
--- a/python/makefile.mk
+++ b/python/makefile.mk
@@ -102,7 +102,9 @@ ALLTAR: $(MISC)/OOoPython.framework.zip
 .IF "$(OS)"=="AIX"
 CONFIGURE_ACTION += --disable-ipv6 --with-threads
 .ENDIF
-BUILD_ACTION=$(ENV_BUILD) $(GNUMAKE) -j$(EXTMAXPROCESS) && $(GNUMAKE) install DESTDIR=$(MYCWD) && 
chmod -R ug+w $(MYCWD)/python-inst && chmod g+w Include
+BUILD_ACTION=$(ENV_BUILD) $(GNUMAKE) && $(GNUMAKE) install DESTDIR=$(MYCWD) && chmod -R ug+w 
$(MYCWD)/python-inst && chmod g+w Include
+    # -j$(EXTMAXPROCESS) tends to fail at least with trunk Clang towards 3.1 on
+    # unxlngx6
 .ELSE
 # ----------------------------------
 # WINDOWS