Re: using autoconf to create build scripts for Assembly language programs

[mallapadi niranjan]

On Fri, Jun 8, 2018 at 6:48 PM, Basin Ilya <address@hidden> wrote:

> Apparently, add:
>
>     LINK = $(LD) $(RAWLDFLAGS) -o $@
>

Thanks that resolved the issue.


>
>
> On 08.06.2018 15:24, mallapadi niranjan wrote:
> > On Fri, Jun 8, 2018 at 1:06 PM, Basin Ilya <address@hidden> wrote:
> >
> >> It might be late, but if you ever want to use /usr/bin/as, here's what
> you
> >> need to change:
> >>
> >> - In AM_INIT_AUTOMAKE add '-Wno-override' after '-Wall' to allow
> override
> >> Automake rules:
> >>
> >>     AM_INIT_AUTOMAKE([-Wall -Wno-override -Werror])
> >>
> >> - In Makefile.am add the custom rule:
> >>
> >>     .s.o:
> >>         $(AS) $(ASFLAGS) -o $@ $<
> >>
> >> - Don't use AM_CCASFLAGS.
> >>
> >
> >
> > Thanks that did help, but for linker it still uses gcc , can we override
> > that too to use /usr/bin/ld , ?
> >
> > bin_PROGRAMS = hello
> > hello_SOURCES = hello.s
> > ASFLAGS = -gstabs+
> > hello_LDFLAGS=-nostdlib -lgcc -Wl,-e_start
> >
> > .s.o:
> >         $(AS) $(ASFLAGS) -o $@ $<
> >
> >
> > output of make after the above changes:
> >
> > <snip>
> > address@hidden foobar]$ make
> > make  all-am
> > make[1]: Entering directory
> > `/home/ashok/practice/ia32/myasm/autotools/foobar'
> > as -gstabs+  -o hello.o hello.s
> > gcc  -g -O2 -nostdlib -lgcc -Wl,-e_start  -o hello hello.o
> > make[1]: Leaving directory
> > `/home/ashok/practice/ia32/myasm/autotools/foobar'
> > </snip>
> >
> >
> >
> >>
> >>
> >> On 07.06.2018 21:16, mallapadi niranjan wrote:
> >>> On Thu, Jun 7, 2018 at 10:03 PM, Eric Blake <address@hidden> wrote:
> >>>
> >>>> On 06/07/2018 11:23 AM, mallapadi niranjan wrote:
> >>>>
> >>>>> Thanks for the reply, that did help  a bit but  was not able to
> remove
> >> the
> >>>>>>
> >>>>> -c option
> >>>>>
> >>>>> I passed./configure CCAS=/usr/bin/as CFLAGS=''
> >>>>>
> >>>>>
> >>>>>   address@hidden foobar]$ make
> >>>>> make  all-am
> >>>>> make[1]: Entering directory
> >>>>> `/home/ashok/practice/ia32/myasm/autotools/foobar'
> >>>>> /usr/bin/as --gstabs+  -c -o hello.o hello.s
> >>>>>
> >>>>
> >>>> The automake documentation states that when you use AM_PROG_AS, your
> >>>> assembler MUST behave like a C compiler, in that it MUST accept -c and
> >> -o.
> >>>> If /usr/bin/as does not accept -c, then you'll have to provide a
> >>>> shell-script wrapper that adds that functionality on top of
> >> /usr/bin/as, at
> >>>> least according to the automake documentation.
> >>>>
> >>>> But again, the autoconf list is not the best list to be asking this;
> >>>> you'll (hopefully) get better response on the automake list, since it
> >> is an
> >>>> automake feature you are trying to use.
> >>>
> >>>
> >>> I was able to resolve it now using gcc itself instead of /usr/binas to
> >>> compile and link the assembler  using below method
> >>>
> >>> Makefile.am
> >>>
> >>> bin_PROGRAMS = hello
> >>> hello_SOURCES = hello.s
> >>> hello_LDFLAGS=-nostdlib -lgcc -Wl,-e_start
> >>>
> >>>
> >>>
> >>>
> >>>>
> >>>>
> >>>> --
> >>>> Eric Blake, Principal Software Engineer
> >>>> Red Hat, Inc.           +1-919-301-3266
> >>>> Virtualization:  qemu.org | libvirt.org
> >>>>
> >>> _______________________________________________
> >>> Autoconf mailing list
> >>> address@hidden
> >>> https://lists.gnu.org/mailman/listinfo/autoconf
> >>>
> >>
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> >
>