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.

-- 
Russel. ============================================================================= Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder@ekiga.net 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

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

On Sun, 2017-06-18 at 21:06 +0200, Jacob Carlborg via digitalmars-d-ldc wrote:
> […]
> 
> Not sure if there's a better way but the "file" command will tell if 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. :-)

-- 
Russel. ============================================================================= Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder@ekiga.net 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