Re: [PATCH] mountlist/ptsname_r: leverage AC_HEADER_MAJOR
On 16 Apr 2016 13:20, Pádraig Brady wrote: > On 16/04/16 11:51, Bruno Haible wrote: > >> These two modules use makedev/major/minor but don't have explicit > >> checks for the functions. Use the existing autoconf macro which > >> will probe some headers for use and set up some defines. > > > > Does this change fix a compilation problem? You did not say so. > > Context in http://lists.gnu.org/archive/html/bug-gnulib/2016-03/msg00025.html > glibc-2.23 and musl now need this change it seems. heh, i completely forgot about that thread ;) -mike signature.asc Description: Digital signature
Re: [PATCH] mountlist/ptsname_r: leverage AC_HEADER_MAJOR
On Sat, Apr 16, 2016 at 01:20:32PM +0100, Pádraig Brady wrote: > On 16/04/16 11:51, Bruno Haible wrote: > >Hi Mike, > > > >>These two modules use makedev/major/minor but don't have explicit > >>checks for the functions. Use the existing autoconf macro which > >>will probe some headers for use and set up some defines. > > > >Does this change fix a compilation problem? You did not say so. > > Context in > http://lists.gnu.org/archive/html/bug-gnulib/2016-03/msg00025.html > glibc-2.23 and musl now need this change it seems. > > I suggested a makedev gnulib module in the thread above > as it's not just the headers that are varying, > as also some systems use mkdev() and some makedev(). > > The patch should be fine to apply though and fixes an immediate issue. Only mountlist part of the patch is relevant, the ptsname_r part is not needed. -- ldv pgptAeVKcpomy.pgp Description: PGP signature
Re: [PATCH] mountlist/ptsname_r: leverage AC_HEADER_MAJOR
On 16/04/16 11:51, Bruno Haible wrote: Hi Mike, These two modules use makedev/major/minor but don't have explicit checks for the functions. Use the existing autoconf macro which will probe some headers for use and set up some defines. Does this change fix a compilation problem? You did not say so. Context in http://lists.gnu.org/archive/html/bug-gnulib/2016-03/msg00025.html glibc-2.23 and musl now need this change it seems. I suggested a makedev gnulib module in the thread above as it's not just the headers that are varying, as also some systems use mkdev() and some makedev(). The patch should be fine to apply though and fixes an immediate issue. thanks, Pádraig
Re: [PATCH] mountlist/ptsname_r: leverage AC_HEADER_MAJOR
Hi Mike, > These two modules use makedev/major/minor but don't have explicit > checks for the functions. Use the existing autoconf macro which > will probe some headers for use and set up some defines. Does this change fix a compilation problem? You did not say so. Does this change make future maintenance easier? I don't think so. mountlist.c and ptsname_r.c are quite special among Gnulib code: they have #if sections for each particular platform. For example, the ptsname_r.c file has - a code section for Solaris, that uses major, minor, - an #include section for Solaris, that includes the appropriate header, - a code section for AIX and OSF/1, that uses minor, - an #include section for AIX and OSF/1, that includes the appropriate header. This is all consistent. Solaris, AIX, OSF/1 won't change much in the future. I don't expect that they will restructure their header files, in the way actively developed platforms occasionally do. There is also little chance that one will want to reuse the code for Solaris, AIX, OSF/1 for any new platform. (GNU/Solaris? Not in development.) Similarly for mountlist.c. So, all I can see is that your change will make configure times longer, in particular on glibc and BSD systems, for no real purpose. We have not split mountlist.c and ptsname_r.c into specific files, one per platform: ptsname_r-solaris.c ptsname_r-aix-osf.c ptsname_r-generic.c because we thought that maintenance is easier with a single file. Maybe we should have done it? Bruno
