Re: [Boost-build] boost file system, program_option no longer build on HPUX/1.42

Subject: Re: [Boost-build] boost file system, program_option no longer build on HPUX/1.42
From: Vladimir Prus (ghost_at_[hidden])
Date: 2010-03-30 10:15:09

On Tuesday 30 March 2010 17:40:53 Avi Bahra wrote:

> For 1.42 can no longer build boost on HP-UX.
> File-system, program-options and serialisation all show a similar
> problem
> 
> + bjam --build-dir=./tmpBuildDir toolset=acc stage link=static
> --with-filesystem variant=debug
> ...patience...
> .......
> acc.compile.c++
> tmpBuildDir/boost/bin.v2/libs/filesystem/build/acc/debug/link-static/threading-multi/utf8_codecvt_facet.o
> "./libs/detail/utf8_codecvt_facet.cpp", line 255: error #2014-D: extra text
> after expected end of preprocessing directive
>   #elif WCHAR_MAX > 0x10000
> 
> 
> The actual file <boost_root>/libs/detail/utf8_codecvt_facet.cpp
> appears to have been changed in boost 1.40
> for the function  get_cont_octet_out_count_impl
> 
> FROM:
> // note the following code will generate on some platforms where
> // wchar_t is defined as UCS2.  The warnings are superfluous as
> // the specialization is never instantitiated with such compilers.
> template<>
> int get_cont_octet_out_count_impl<4>(wchar_t word){
>     if (word < 0x80) {
>         return 0;
>     }
>     if (word < 0x800) {
>         return 1;
>     }
>     if (word < 0x10000) {
>         return 2;
>     }
>     if (word < 0x200000) {
>         return 3;
>     }
>     if (word < 0x4000000) {
>         return 4;
>     }
>     return 5;
> }
> 
> TO:
> 
> template<>
> int get_cont_octet_out_count_impl<4>(wchar_t word){
>     if (word < 0x80) {
>         return 0;
>     }
>     if (word < 0x800) {
>         return 1;
>     }
> 
>     // Note that the following code will generate warnings on some platforms
>     // where wchar_t is defined as UCS2.  The warnings are superfluous as
> the
>     // specialization is never instantitiated with such compilers, but this
>     // can cause problems if warnings are being treated as errors, so we
> guard
>     // against that.  Including <boost/detail/utf8_codecvt_facet.hpp> as we
> do
>     // should be enough to get WCHAR_MAX defined.
> #if !defined(WCHAR_MAX)
> #   error WCHAR_MAX not defined!
> #endif
>     // cope with VC++ 7.1 or earlier having invalid WCHAR_MAX
> #if defined(_MSC_VER) && _MSC_VER <= 1310 // 7.1 or earlier
>     return 2;
> #elif WCHAR_MAX > 0x10000
> 
>    if (word < 0x10000) {
>         return 2;
>     }
>     if (word < 0x200000) {
>         return 3;
>     }
>     if (word < 0x4000000) {
>         return 4;
>     }
>     return 5;
> 
> #else
>     return 2;
> #endif
> }
> 
> Does any one know of a work around ?

This is not actually a Boost.Build problem -- it's the problem with the HPUX compiler.
I suggest you report it to the relevant company. You may also discuss workarounds
on the main Boost mailing list or in Trac (where a ticket for it exists, but
I don't remember the number offhand)

- Volodya

Thanks,

--
Vladimir Prus
http://vladimir_prus.blogspot.com
Boost.Build: http://boost.org/boost-build2