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Re: 64-bit compilation and printfs

From: Adrian Robert
Subject: Re: 64-bit compilation and printfs
Date: Wed, 14 Oct 2009 13:50:47 -0400

On Oct 14, 2009, at 12:40 PM, Dan Nicolaescu wrote:

It looks like this the 64-bit mode uses the 32-bit configuration file.
From configure.in:

 ## Apple Darwin / Mac OS X
 *-apple-darwin* )
   case "${canonical}" in
     i[3456]86-* )  machine=intel386 ;;
     powerpc-* )    machine=macppc ;;
     * )            unported=yes ;;

there should be an:
     x86_64-* )       machine=amdx86-64 ;;
in that "case".

that will allow to remove this from emacs/src/s/intel386.h:

#if defined (DARWIN_OS)
#ifdef _LP64
/* For Intel Mac, with CC='gcc -arch x86_64'.  */
#define NO_ARG_ARRAY

there shouldn't be any _LP64 checks in that file.

OK, I'm adding the first and taking the second out. It hasn't fired in some time anyway as DARWIN_OS is not defined yet (machine file comes before system file in config.h).

However, what is the purpose of the defining of START_FILES in amdx86-64.h? The default case is:

#define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o
#define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o

None of those files are on OS X machines (not sure about non-OS X Darwin).

I can exclude it under __APPLE__ but wanted to know why it was there first.


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