* Libgccjit detection
@ 2023-08-09 17:45 Li, Yicheng
2023-08-09 19:31 ` David Malcolm
0 siblings, 1 reply; 3+ messages in thread
From: Li, Yicheng @ 2023-08-09 17:45 UTC (permalink / raw)
To: jit
Hi,
Is there a way to detect libgccjit within C code?
I’m trying to compile the program without “-lgccjit”, but I load the corresponding PATH and LD_LIBRARY_PATH.
Thank you
Yicheng Li
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Libgccjit detection
2023-08-09 17:45 Libgccjit detection Li, Yicheng
@ 2023-08-09 19:31 ` David Malcolm
2023-08-09 19:35 ` Li, Yicheng
0 siblings, 1 reply; 3+ messages in thread
From: David Malcolm @ 2023-08-09 19:31 UTC (permalink / raw)
To: Li, Yicheng, jit
On Wed, 2023-08-09 at 17:45 +0000, Li, Yicheng via Jit wrote:
> Hi,
>
> Is there a way to detect libgccjit within C code?
I'm not sure what you mean here, sorry.
If you want the ability to compile a source file containing gcc_jit_*
calls, but want to make having libgccjit.h optional at compile-time,
then presumably you need your project to have some kind of configure
test that determines if ligccjit is available, sets up a macro define,
and to wrap your calls to gcc_jit_* in some kind of
#if HAVE_LIBGCCJIT
to use the macro.
For specific features within libgccjit.h, I've tried to add a
#ifdef LIBGCCJIT_HAVE_name_of_feature
as I add them. For example, there's a:
#ifdef LIBGCCJIT_HAVE_gcc_jit_context_set_bool_allow_unreachable_blocks
which could be used to wrap calls to that specific function.
> I’m trying to compile the program without “-lgccjit”, but I load the
> corresponding PATH and LD_LIBRARY_PATH.
Did the above answer your question, or did I misunderstand?
Dave
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Libgccjit detection
2023-08-09 19:31 ` David Malcolm
@ 2023-08-09 19:35 ` Li, Yicheng
0 siblings, 0 replies; 3+ messages in thread
From: Li, Yicheng @ 2023-08-09 19:35 UTC (permalink / raw)
To: David Malcolm; +Cc: jit
Hi,
Adding the macro is what I’ve done.
Thank you
Yicheng Li
> On Aug 9, 2023, at 3:31 PM, David Malcolm <dmalcolm@redhat.com> wrote:
>
> On Wed, 2023-08-09 at 17:45 +0000, Li, Yicheng via Jit wrote:
>> Hi,
>>
>> Is there a way to detect libgccjit within C code?
>
> I'm not sure what you mean here, sorry.
>
> If you want the ability to compile a source file containing gcc_jit_*
> calls, but want to make having libgccjit.h optional at compile-time,
> then presumably you need your project to have some kind of configure
> test that determines if ligccjit is available, sets up a macro define,
> and to wrap your calls to gcc_jit_* in some kind of
> #if HAVE_LIBGCCJIT
> to use the macro.
>
> For specific features within libgccjit.h, I've tried to add a
>
> #ifdef LIBGCCJIT_HAVE_name_of_feature
>
> as I add them. For example, there's a:
>
> #ifdef LIBGCCJIT_HAVE_gcc_jit_context_set_bool_allow_unreachable_blocks
>
> which could be used to wrap calls to that specific function.
>
>> I’m trying to compile the program without “-lgccjit”, but I load the
>> corresponding PATH and LD_LIBRARY_PATH.
>
> Did the above answer your question, or did I misunderstand?
>
> Dave
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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