You should add an architecture from the Build Configuration or Target
build properties pane. This will make Xcode pass all of the right
flags automagically.
On Apr 29, 2007, at 5:42 AM, Robert Purves wrote:
From the command line, gcc on my Intel Mac allows -m64 and produces
working 64 bit executables:
$ cat test.c
#include <stdio.h>
int main( void )
{
printf( "Hello, World!\n" );
return 0;
}
$ gcc test.c -o test -m64 && ./test
Hello, World!
$ file test
test: Mach-O 64-bit executable x86_64
On attempting to build the same file as a Standard Tool in Xcode
2.4.1, compilation is OK but if -m64 is supplied as OTHER_CFLAGS,
there's a link error:
/usr/bin/ld: Undefined symbols:
_main
/usr/lib/gcc/i686-apple-darwin8/4.0.1/../../../crt1.o reference to
undefined _main
Xcode seems less capable than gcc itself. Is there a workaround?
Robert P.
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