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</o:shapelayout></xml><![endif]--></head><body lang=EN-IE link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>I have a partial fix for these issues.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>The first is a group of errors that are due to Newlib v2.5.0 providing a richer Locale support than previous releases (Newlib’s ‘</span><span style='font-size:12.0pt;font-family:"Courier New"'>locale.h</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>’), and this is turn results in conflicts for all the definitions contained in LibC++’s source ‘</span><span style='font-size:12.0pt;font-family:"Courier New"'>include/support/newlib/xlocale.h</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>’ I have changed:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New"'>#include <support/xlocale/__nop_locale_mgmt.h><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>to:<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New"'>#if defined(__NEWLIB__) && (__NEWLIB__ == 2) \<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New"'> && defined(__NEWLIB_MINOR__) && (__NEWLIB_MINOR__ >= 5) \<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New"'> && (!defined(__POSIX_VISIBLE) || (__POSIX_VISIBLE < 200809))<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New"'>#include <support/xlocale/__nop_locale_mgmt.h><o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New"'>#endif<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>I think that this is a reasonably portable resolution, though I will have to examine intermediate versions of Newlib after v2.2.0-20150423 and before v2.5.0 to see when the relevant changes occurred, so the exclusion check may need to be refined.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>However, I am not sure what to do about ‘</span><span style='font-size:12.0pt;font-family:"Courier New"'>vasprintf</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>’. I tried excluding the function ‘</span><span style='font-size:12.0pt;font-family:"Courier New"'>__libcpp_asprintf_l</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>’ if ‘</span><span style='font-size:12.0pt;font-family:"Courier New"'>__STRICT_ANSI__</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>’ is defined, but this had knock-on consequences because this function is used elsewhere in the C++ headers, so it is a more complex issue to resolve.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'> MartinO<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='mso-fareast-language:EN-IE'>From:</span></b><span lang=EN-US style='mso-fareast-language:EN-IE'> Martin J. O'Riordan [mailto:martin.oriordan@movidius.com] <br><b>Sent:</b> 12 January 2017 15:58<br><b>To:</b> 'cfe-dev' <cfe-dev@lists.llvm.org><br><b>Subject:</b> Newlib v2.5.0 and LibC++ locale support<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>I am in the process of updating from using Newlib v2.2.0-20150423 for our common C library with LLVM to v2.5.0 and this is breaking LibC++. Both LibC++ v3.9 and what is currently at head are affected.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>There are some general problems with Locales, and in particular the definition of the type ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>locale_t</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’ which is defined in Newlib’s ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>sys/_locale.h</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’ as:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'>typedef struct __locale_t *locale_t;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>and in LibC++’s ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>support/xlocale/__nop_locale_mgmt.h</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’ as:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'>typedef void *locale_t;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>But it is also running into another problem with ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>vasprintf</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’. In LibC++ this is referenced in ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>__bsd_locale_fallbacks.h</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’, but ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>vasprintf</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’ is not an ISO C function, and the newer version of Newlib has the declaration in ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'><stdio.h></span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’ guarded with ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>__GNU_VISIBLE</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’ to keep it out of the global namespace, thus:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'>#if __GNU_VISIBLE<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'>int _EXFUN(asprintf, (char **__restrict, const char *__restrict, ...)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'> _ATTRIBUTE ((__format__ (__printf__, 2, 3))));<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'>int _EXFUN(vasprintf, (char **, const char *, __VALIST)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'> _ATTRIBUTE ((__format__ (__printf__, 2, 0))));<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'>#endif<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>I don’t know which version of Newlib changed the declaration of ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>vasprintf</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’, but the current LibC++ does not seem to handle the change. Should I be building LibC++ with ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>__GNU_VISIBLE</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’ defined? Any recommendations for how I should resolve the multiple definition of ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>locale_t</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'> MartinO<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p></div></body></html>