On Mon, Jul 1, 2019 at 6:07 PM Aditya Upadhyay <aadit0...@gmail.com> wrote:
> On Mon, Jul 1, 2019 at 5:58 PM Joel Sherrill <j...@rtems.org> wrote: > > > > If you have finished ndbm, please do not attempt to write memcpy for > SPARC. It is not as important as having fenv.h methods. We have a default > memcpy implementation for all architectures. The hope was to find an > already implemented optimized version with history for the SPARC. But so > far we haven't found one with appropriate license. It will be difficult to > implement, ensure correctness, and really gain speed. > > > > So work on filling a gap in what APIs are provided. Fenv.h > > > > Also we need to work on merging your ndbm work. > > > Newlib-Cygwin uses db_local.h and it was ported from FreeBSD. Since > that, A lot thing has changed. > If we replace this db_local.h to current freeBSD db.h, then we also > need to make changes in other file such > as hash.c. > > What is your view on this? Shall we ask this on newlib mailing list? > I stepped up for this after the suggestion of gedare. Planned to update whole of search directory. I asked this query on newlib, but they haven't replied yet. We can re-send this query. > > > --joel > > > > On Mon, Jul 1, 2019, 5:54 AM Vaibhav Gupta <vaibhavgupt...@gmail.com> > wrote: > >> > >> Hello, > >> I am reading about memcpy to write it for newlib. > >> Should I also write wmemcpy along with it? > https://pubs.opengroup.org/onlinepubs/009695399/functions/wmemcpy.html > >> . > >> Regarding ndbm reference. RSB has not generated library files. > >> - but in newlib source tree, when I compiled newlib, while porting > ndbm, it generated lib_a-ndbm.o object file. > >> - I am planning to use that object file to compile ndbm testsuite. > >> . > >> When Object file and C file are present in same directory, we can use : > >> $ gcc trial.c mylib.o > >> But I am not able to find out, how to use this in Makefile.am. > >> LDADD replaces all global variables while compiling. > >> > >> I tried various codes, but could not solve it. I just want to use the > object file (lib_a-ndbm.o) > >> created while building newlib, to compile ndbm testsuite. > >> > >> I need guidance for this. > >> > >> Vaibhav Gupta > >> > >> On Fri, Jun 28, 2019 at 9:57 PM Gedare Bloom <ged...@rtems.org> wrote: > >>> > >>> On Fri, Jun 28, 2019 at 7:20 AM Vaibhav Gupta < > vaibhavgupt...@gmail.com> wrote: > >>> > > >>> > > >>> > > >>> > On Fri, Jun 28, 2019, 6:19 PM Joel Sherrill <j...@rtems.org> wrote: > >>> >> > >>> >> > >>> >> > >>> >> On Fri, Jun 28, 2019, 8:40 AM Vaibhav Gupta < > vaibhavgupt...@gmail.com> wrote: > >>> >>> > >>> >>> > >>> >>> > >>> >>> On Fri, Jun 28, 2019, 5:57 PM Joel Sherrill <j...@rtems.org> > wrote: > >>> >>>> > >>> >>>> You need to add the library to the gcc command that links the > program. If the libndbm is in the library search path, add -lndbm. > >>> >>>> > >>> >>>> I don't recall the exact Makefile variable to set for this to > show up. Look at the paranoia sample. It should be doing this with -lm. > >>> >>>> > >>> >>>> --joel > >>> >>> > >>> >>> Okay, I will try this! > >>> >> > >>> >> > >>> >> The following web page is a pretty good description of building a > library using a native GCC and linking it into a program. It includes some > of the theory going on so this might help you. > >>> >> > >>> >> > https://www.cs.swarthmore.edu/~newhall/unixhelp/howto_C_libraries.html > >>> >> > >>> >> Guys.. this comes up periodically, even though this is really basic > tool usage to me, is this something we should provide some guidance on? > >>> > > >>> > Actually, i tried this before, but I cannot find libndbm in my > development directory. I guess it is not generated. > >>> > . > >>> > One thing I can do is, the newlib-cygwin i compiled while porting > ndbm, it generated ndbm library. I can use that. > >>> > >>> Yes, the library should be 'bundled' with the updated compiler > >>> toolchain. You need to be sure you are using this toolchain. Is it > >>> what you installed to /home/varodek/development/rtems/5 ? > >>> > >>> Gedare >
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