Low Performance Compiling Statically

[Franxis]

I don't know why, but MAME is terribly slow compiling statically, i have to compile it dynamically (without the -static link flag).
Compiling it dynamically is about 3x faster...

Is it only me?

Is the problem in the devkits? It occurs in both devkitgp2x and the linux toolchain.

Also it is also strange that compiling dynamically, the devkitgp2x executable is 2x faster than the one created with the linux toolchain.

Really strange.

 

[Pickle]

.
Compiling it dynamically is about 3x faster...

Is it only me?

Is the problem in the devkits? It occurs in both devkitgp2x and the linux toolchain.

Also it is also strange that compiling dynamically, the devkitgp2x executable is 2x faster than the one created with the linux toolchain.

Really strange.

I tried to use open2x to compile but it just wouldnt happen. Its is odd you get that much variance in speed.

 

[Sphinxter]

According to the man page -static is passed to the darwin linker and I'm fairly certain has no effect on the compiler, object code is object code. Separate the two steps in a make file and see.

 

[torpor]

Could be because when you're compiling with -static you're getting soft-fp based libs, or something. Use objdump to check the onboard contents of your binary file and see what the differences are between the static executable and the dynamic one ..

 

[Exophase]

Could be because when you're compiling with -static you're getting soft-fp based libs, or something. Use objdump to check the onboard contents of your binary file and see what the differences are between the static executable and the dynamic one ..

Which is what he would want, since Wiz doesn't have an FPU.

I wouldn't expect MAME to be using a lot of floating point in the things typically emulated on Wiz.

 

[Franxis]

Could be because when you're compiling with -static you're getting soft-fp based libs, or something. Use objdump to check the onboard contents of your binary file and see what the differences are between the static executable and the dynamic one ..

Which is what he would want, since Wiz doesn't have an FPU.

I wouldn't expect MAME to be using a lot of floating point in the things typically emulated on Wiz.

I use devkitgp2x (the same toolchain i use for the gp2x). The libraries are compiled with soft float. And dynamically the executable runs 2x faster than statically. It is something really strange.

 

[Exophase]

Are you using SDL? If so, which are you compiling against?

 

[Franxis]

Are you using SDL? If so, which are you compiling against?

No, no SDL...

 

[cortex_a8_optimiser]

Hi Guys,
I have worked on cortex-a8 optimization (fixed point).Is ther any way I can help you