Hello,
just trying to use the dragonegg plugin with gcc on my project.
Unfortunately I get an
/usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.5.2/include/ia32intrin.h:170:35:
error: unsupported target builtin ‘__builtin_ia32_bsrdi’ used
error. I use (and need) the "bsr" (bit scan reverse) instruction. So it
seems it isn't implemented (yet). Can I safely use gcc inline assembly
instead? Are the some preprocessor macros defined while using dragonegg
so that I can conditionally compile?
- Gunther
Hi Gunther,
just trying to use the dragonegg plugin with gcc on my project.
Unfortunately I get an
/usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.5.2/include/ia32intrin.h:170:35:
error: unsupported target builtin ‘__builtin_ia32_bsrdi’ used
yup, bsrdi and bsrsi aren't implemented (yet). Please open a bug report about
this. The unimplemented x86 builtins are those commented out in the file
x86/x86_builtins
error. I use (and need) the "bsr" (bit scan reverse) instruction. So it
seems it isn't implemented (yet). Can I safely use gcc inline assembly
instead?
Yes, inline assembly should work.
Are the some preprocessor macros defined while using dragonegg
so that I can conditionally compile?
No, and I don't think it is possible to add any. On the other hand
you can always add -DDRAGONEGG or something to your compilation flags
when you are using the plugin.
Ciao, Duncan.