[filesystem][QNX6] New filesystem will not compile under QNX6
This section in operations.cpp fails to compile - BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type remove_api( const std::string & ph ) { # if defined(__QNXNTO__) || (defined(__MSL__) && (defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__))) // Some Metrowerks C library versions fail on directories because of a // known Metrowerks coding error in ::remove. Workaround is to call // rmdir() or unlink() as indicated. // Same bug also reported for QNX, with the same fix. if ( (is_directory( ph ) ? ::rmdir( ph.string().c_str() ) // **ERROR** : ::unlink( ph.string().c_str() )) != 0 ) // **ERROR** # else 'ph' is now std::string (it was a locally defined type 'path') and does not have a member function 'string()'. I suspect this is a hangover from the previous implementation. Should those lines perhaps now be - if ( (is_directory( ph ) ? ::rmdir( ph.c_str() ) : ::unlink( ph.c_str() )) != 0 ) ********************************************************************* This section near the end of operations.cpp completely defeats QNX6 as struct dirent does not have a member called d_type. # ifdef BOOST_FILESYSTEM_STATUS_CACHE ... if ( entry.d_type == DT_DIR ) sf = symlink_sf = fs::directory_flag; else if ( entry.d_type == DT_REG ) sf = symlink_sf = fs::file_flag; else if ( entry.d_type == DT_LNK ) { sf = 0; symlink_sf = fs::symlink_flag; } else sf = symlink_sf = fs::other_flag; # else QNX does embody tests to determine the file (hence directory) type but they are based on a call to "stat( const char *path, struct stat buf )" and inspecting buf.st_mode with pre-defined macros e.g "S_IFDIR( buf.st_mode )" returns 1 if 'path' is a directory. This may be more portable? ************************************************************************ I am experiencing a blizzard of "comparison between signed and unsigned" warnings originating from path.hpp. They start at line 768 and they occur each time "size" is compared against a constant value. Sorry, I am not sure how to get rid of these warnings (in a portable way), but it would be a relief if they were to disappear :-) HTH Jim Douglas
"Jim Douglas" <jim@dramatec.co.uk> wrote in message news:do8fsp$cfg$1@sea.gmane.org...
This section in operations.cpp fails to compile -
BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type remove_api( const std::string & ph ) { # if defined(__QNXNTO__) || (defined(__MSL__) && (defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__))) // Some Metrowerks C library versions fail on directories because of a // known Metrowerks coding error in ::remove. Workaround is to call // rmdir() or unlink() as indicated. // Same bug also reported for QNX, with the same fix. if ( (is_directory( ph ) ? ::rmdir( ph.string().c_str() ) // **ERROR** : ::unlink( ph.string().c_str() )) != 0 ) // **ERROR** # else
'ph' is now std::string (it was a locally defined type 'path') and does not have a member function 'string()'. I suspect this is a hangover from the previous implementation. Should those lines perhaps now be -
if ( (is_directory( ph ) ? ::rmdir( ph.c_str() ) : ::unlink( ph.c_str() )) != 0 )
Yes. Fixed in CVS.
*********************************************************************
This section near the end of operations.cpp completely defeats QNX6 as struct dirent does not have a member called d_type.
# ifdef BOOST_FILESYSTEM_STATUS_CACHE ... if ( entry.d_type == DT_DIR ) sf = symlink_sf = fs::directory_flag; else if ( entry.d_type == DT_REG ) sf = symlink_sf = fs::file_flag; else if ( entry.d_type == DT_LNK ) { sf = 0; symlink_sf = fs::symlink_flag; } else sf = symlink_sf = fs::other_flag; # else
QNX does embody tests to determine the file (hence directory) type but they are based on a call to "stat( const char *path, struct stat buf )" and inspecting buf.st_mode with pre-defined macros e.g "S_IFDIR( buf.st_mode )" returns 1 if 'path' is a directory. This may be more portable?
BOOST_FILESYSTEM_STATUS_CACHE enables an optimization that applies to Windows, Linux, and some systems derived from BSD. It is turned on with some #if code starting about line 68 of operations.cpp. Apparently QNX must define __ USE_BSD. I've added a !defined(__QNXNTO__) to the conditions. Let me know if that doesn't fix the problem. ************************************************************************
I am experiencing a blizzard of "comparison between signed and unsigned" warnings originating from path.hpp. They start at line 768 and they occur each time "size" is compared against a constant value. Sorry, I am not sure how to get rid of these warnings (in a portable way), but it would be a relief if they were to disappear :-)
Is this happening for all paths, or only wide-character paths? If it is happening only on wide-character paths, my best guess is that it is a clash between wchar_t and char, with one being signed and the other unsized. I'm at a loss if it is happening for narrow character paths. Unless... Ah ha! Please look at the output from the config library's config_info test. Is BOOST_NO_INCLASS_MEMBER_INITIALIZATION defined? That causes BOOST_STATIC_CONSTANT to fallback to use an enum, and that might have a different sign from char. If that is the case, I'll try to think up a workaround. Thanks for working on the QNX issues! --Beman
Beman, First two items are fixed. The code now compiles and I have resumed regression testing. I will look into the warning problem over the coming days and report back. Thanks Jim
participants (2)
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Beman Dawes -
Jim Douglas