Re : [Help-smalltalk] µTrying to compile gst for p rofiling

[Mathieu Suen]

Thanks Paolo.

For now on I have only access to an ubuntu machine.
I will try with Shark back home.

With kcachegrind at a first glance I got a total of self cost

~2 for comp.c, gst-parse.c, lex.c
~26 for interp.c, interp_bc.inl, 

Not sure what is the unit but a time unit for sure.
I also have many other file but it is not sure whether to include them in the 
compiler or the interpreter.
(alloc.c, callin.c, dict.c(~4 time unit), input.c(~3 time unit), oop.c(~20 time 
unit), prims.def (~18 time unit)...)

I also got some <cycle 3> which take ~28 time unit.
I don't know to what it correspond.




----- Message d'origine ----
De : Paolo Bonzini <address@hidden>
À : Mathieu Suen <address@hidden>
Cc : address@hidden
Envoyé le : Jeu 3 juin 2010, 14h 12min 57s
Objet : Re: [Help-smalltalk] µTrying to compile gst for profiling

On 06/03/2010 10:54 AM, Mathieu Suen wrote:
> Hi,
>
>
> I try to build a gst with profiling information.
> So I configure gst with:
>
> ./configure CFLAGS=-pg
>
> and make give me thix error:
>
> gcc: -pg and -fomit-frame-pointer are incompatible
>
>
> I guess I should remove the oprion -fomit-frame-pointer but
> I don't know the right way of doing it.
> Is there a way to compile gst with profiling information?

Try this:

diff --git a/configure.ac b/configure.ac
index b9f4b43..fc2ce06 100644
--- a/configure.ac
+++ b/configure.ac
@@ -264,8 +264,9 @@
       AC_MSG_ERROR([GNU Smalltalk requires GCC 3.3 or later.]) ;;
  esac

-case $host_cpu in
-   i*86) LIBGST_CFLAGS='-fomit-frame-pointer' ;;
+case '$host_cpu: $CFLAGS ' in
+   i*86:*' -pg '*) ;;
+   i*86:*) LIBGST_CFLAGS='-fomit-frame-pointer' ;;
     *) ;;
  esac
  AC_SUBST(LIBGST_CFLAGS)


If you're on the Mac, however, I would use Shark.  Much simpler and much 
more powerful.

Paolo