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digitalmars.D.ldc - DMD, LDC, and GDC compilers and 32/64 bit

reply Russel Winder via digitalmars-d-ldc <digitalmars-d-ldc puremagic.com> writes:
I believe DMD, LDC, and GDC all have the -m32 or -m64 option to
determine the word size of compiled object and executable.

I also believe there are 32-bit and 64-bit builds of the three
compilers. Or are there?

It appears at some time in the past that some of the compilers when
compiled as 32-bit executables, could not generate 64-bit objects and
executables as they did not understand the -m64 option, it was not
compiled in.

I am asking this as I cannot test to get experimental data, but I need
to fix a long standing removal of a test in the SCons D test suite.

Is there a way to determine the bitsize of the compiler executable, in
the test it is assumed that if the OS is 32-bit then so are the D
compilers.

--=20
Russel.
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Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder ekiga.n=
et
41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel winder.org.uk
London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder
Jun 18
parent reply Jacob Carlborg <doob me.com> writes:
On 2017-06-18 18:08, Russel Winder via digitalmars-d-ldc wrote:

 Is there a way to determine the bitsize of the compiler executable, in
 the test it is assumed that if the OS is 32-bit then so are the D
 compilers.
Not sure if there's a better way but the "file" command will tell if it's a 32bit or a 64bit executable. -- /Jacob Carlborg
Jun 18
parent Russel Winder via digitalmars-d-ldc <digitalmars-d-ldc puremagic.com> writes:
On Sun, 2017-06-18 at 21:06 +0200, Jacob Carlborg via digitalmars-d-ldc=20
wrote:
 [=E2=80=A6]
=20
 Not sure if there's a better way but the "file" command will tell if=20
 it's a 32bit or a 64bit executable.
Good point. I was obviously not thinking clearly yesterday. I am not sure that is what I will use but I will asking the same question by other means. :-) --=20 Russel. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D Dr Russel Winder t: +44 20 7585 2200 voip: sip:russel.winder ekiga.n= et 41 Buckmaster Road m: +44 7770 465 077 xmpp: russel winder.org.uk London SW11 1EN, UK w: www.russel.org.uk skype: russel_winder
Jun 19