Instructions to send a Patch

[Aditya Upadhyay]

On Thu, May 30, 2019 at 12:52 AM Gedare Bloom <gedare at rtems.org> wrote:
>
> On Tue, May 28, 2019 at 8:23 PM Vaibhav Gupta <vaibhavgupta40 at gmail.com> wrote:
> >
> >
> >
> > On Tue, May 28, 2019 at 11:47 AM Aditya Upadhyay <aadit0402 at gmail.com> wrote:
> >>
> >> On Mon, May 27, 2019 at 10:42 PM Vaibhav Gupta <vaibhavgupta40 at gmail.com> wrote:
> >> >
> >> > Hello, okay I will keep that in mind.
> >> > .
> >> > .
> >> > .
> >> > .
> >> > But there is one problem with this patch then.
> >> > .
> >> > .
> >> > If i just copy-paste ndbm.h, db.h(needed by ndbm.h) and ndbm.c and make the entry of ndbm.c  in Makefile.am.
> >> > Then run 'autoreconf' to add the entry for ndbm.c in Makefile.in.  And then run `make` command. There will be compilation error.
> >> > .
> >>
> >> See Instructions here about regenerating the configuration files in newlib.
> >> https://sourceware.org/newlib/README
> >> Newlib uses a specific version of autoconf. You can use `autoreconf
> >> -fvi` command to regenerate that
> >> Makefile.in file.
> >
> > Okay
> >>
> >>
> >> > Header files needed by libc/posic/*.c files are present in libc/include directory. It is default path.
> >> > .
> >> > But ndbm.c also requires "hash.h" which is present inside "libc/search".
> >> > .
> >> > To over come it, i had to modify the entry of ndbm.c in Makefile.in and add "-I (topr_srcdir)/search" to specify the compiler for alternative source path.
> >>
> >> If you specify any header file inclusion in Makefile.am, then you will
> >> need to add the things manually
> >> and when you will run autoreconf command, this .in file will get updated.
> >>
> > I guess I will need to modify configure.in file. If I am not wrong that is responsible for what autoreconf is doing.
>
> You shouldn't be manually modifying any *.in files.

Basically, After adding any files, We just need to make some entries
in these two files: configure.ac and Makefile.am files.
autoheader, autoconf and automake are the tools used when you execute
autoreconf command. It generate config.h.in, Makefile. in and that
configure script and When you execute configure script, you get
config.h and Makefile.
Take a look at page no 26 of this file.
https://elinux.org/images/4/43/Petazzoni.pdf