[Boost-users] Re: Problems compiling boost.python with Boost 1.31.0

15 Apr 2004

      David Abrahams wrote:
...
"Markus Schöpflin"  writes:
...
It looks like the exec prefix is not taken into account because the file is
located here:
/opt/exec/OSF1-V5.1-alpha/include/python2.3/pyconfig.h
Is this not supported by the current boost build process or is there any
option I missed? Or is there anything else I'm doing wrong?
I don't know.  After bjam encounters an error it dumps the
command-line it used to invoke the compiler.  Do you see anything
suspicious in that?
Ok, I have been digging a little deeper and I discovered several issues. 
After resolving all of them I was able to successfully compile 
boost.python. (Actually the build is still running but 
"libboost_python_debug.so" was built successfully.)

1. boost.python doesn't take into account the exec root. According to 
"http://www.python.org/doc/2.3.3/api/includes.html" it needs to be 
included as well when if differs from the python root. I hacked 
"python.jam" to work around that, it's attached as patch 1. It has the 
problems that the python root ends up two times in the include path. 
Don't know how to fix this...

2. In the file "tru64cxx65-tools.jam" the option "-nopure_cname" is 
passed to the compiler. This leads to problems when compiling io headers 
when "-std strict_ansi" is in effect, patch 2 fixes this.

3. boost.python doesn't include "Python.h" before including system 
headers. This leads to many warnings concerning the redefinitions of 
certain macros, like for example "_XOPEN_SOURCE" or "_POSIX_C_SOURCE". I 
fixed that by simply adding "#include " to the beginning of 
"/boost/python/detail/prefix.hpp". According to the comments in that 
file this problem is known. A better fix for this probably would be to 
manually include "pyconfig.h" before including any system headers, as 
this file defines all the macros giving trouble.

4. boost.python contains a workaround for the broken offsetof macro on 
Tru64/cxx. The version number for the check needs to be changed to 
include newer compilers as well. The latest cxx version I tried was 
V6.5-040, therefore I changed to version check to include that compiler. 
This is attached as patch 3.

Thanks, Markus

*** /usr/users/schoepf/net/src/boost_1_31_0/tools/build/v1/python.jam	Wed Jan 28 22:52:25 2004
--- python.jam	Thu Apr 15 08:28:51 2004
***************
*** 118,124 ****
  {
      PYTHON_ROOT ?= /usr/local ;
      PYTHON_ROOT = $(PYTHON_ROOT:J=" ") ;
!     PYTHON_INCLUDES ?= $(PYTHON_ROOT)/include/python$(PYTHON_VERSION) ;
      PYTHON_LIB_PATH ?= $(PYTHON_ROOT)/lib/python$(PYTHON_VERSION)/config ;

      PYTHON_PROPERTIES ?=
--- 118,125 ----
  {
      PYTHON_ROOT ?= /usr/local ;
      PYTHON_ROOT = $(PYTHON_ROOT:J=" ") ;
!     PYTHON_EXEC_ROOT ?= $(PYTHON_ROOT) ;
!     PYTHON_INCLUDES ?= $(PYTHON_ROOT)/include/python$(PYTHON_VERSION) $(PYTHON_EXEC_ROOT)/include/python$(PYTHON_VERSION) ;
      PYTHON_LIB_PATH ?= $(PYTHON_ROOT)/lib/python$(PYTHON_VERSION)/config ;

      PYTHON_PROPERTIES ?=

*** /usr/users/schoepf/net/src/boost_1_31_0/tools/build/v1/tru64cxx65-tools.jam	Thu Aug 22 18:59:27 2002
--- tru64cxx65-tools.jam	Thu Apr 15 09:04:57 2004
***************
*** 86,92 ****
  # really can't ignore this one!
  actions tru64cxx65-C++-action
  {
!    cxx -ptr "$(<[1]:D)"/cxx_repository -noimplicit_include -c -std strict_ansi -nopure_cname -msg_display_number -msg_disable 186,450,1115 -U$(UNDEFS) -D$(DEFINES) $(CFLAGS) $(C++FLAGS)  -I"$(HDRS)" -I"$(STDHDRS)" -o "$(<)" "$(>)"
  }

  #### Archive ####
--- 86,92 ----
  # really can't ignore this one!
  actions tru64cxx65-C++-action
  {
!    cxx -ptr "$(<[1]:D)"/cxx_repository -noimplicit_include -c -std strict_ansi -msg_display_number -msg_disable 186,450,1115 -U$(UNDEFS) -D$(DEFINES) $(CFLAGS) $(C++FLAGS)  -I"$(HDRS)" -I"$(STDHDRS)" -o "$(<)" "$(>)"
  }

  #### Archive ####

*** /usr/users/schoepf/net/src/boost_1_31_0/boost/python/detail/config.hpp	Tue Jul 22 00:06:41 2003
--- config.hpp	Thu Apr 15 09:28:09 2004
***************
*** 100,106 ****
  # define BOOST_PYTHON_EXPORT_CLASS_TEMPLATE(instantiation) struct ThIsTyPeNeVeRuSeD
  #endif

! #if (defined(__DECCXX_VER) && __DECCXX_VER <= 60590031)
  // Replace broken Tru64/cxx offsetof macro
  # define BOOST_PYTHON_OFFSETOF(s_name, s_member) \
          ((size_t)__INTADDR__(&(((s_name *)0)->s_member)))
--- 100,106 ----
  # define BOOST_PYTHON_EXPORT_CLASS_TEMPLATE(instantiation) struct ThIsTyPeNeVeRuSeD
  #endif

! #if (defined(__DECCXX_VER) && __DECCXX_VER <= 60590040)
  // Replace broken Tru64/cxx offsetof macro
  # define BOOST_PYTHON_OFFSETOF(s_name, s_member) \
          ((size_t)__INTADDR__(&(((s_name *)0)->s_member)))