Hello,

I'm looking for tips to optimize the size of one of my program.

I see that the sds.lib is make by some part that we can delete or add or extract in a .obj file.

But I would like to optimize the siez of my exe and often only a part of these
parts are used. For example 'patch16' is composed by
	FDIV_R                            FDIV_M32
	FDIV_M32I                         FDIV_M64
	FDIVR_M16I                        FDIVR_M32I
	FDIVR_M64                         FDIVR_M32
	FDIV_M16I

and when I delete patch16 from sds.lib, I have the error message explaining that FDIV_R is missing. So my programm use only FDIV_R.

Patch16 take 2020 bytes in my exe. Thus I would like to delete in Patch16.obj what I don't need to reduce the size of my .exe.

I tryed to dissassemble it with obj2asm, but I can't reassemble only what I want to reduce the size (more than 100 error messages because some things are not defined)

How could I reduce the size of my exe, deleting or extracting what I want in Patch16.obj(for example)?

Thanks for help.

veb wrote:
> Hello,
> 
> I'm looking for tips to optimize the size of one of my program.
> 
> I see that the sds.lib is make by some part that we can delete or add or
> extract in a .obj file.
> 
> But I would like to optimize the siez of my exe and often only a part of these
> parts are used. For example 'patch16' is composed by
> 	FDIV_R                            FDIV_M32
> 	FDIV_M32I                         FDIV_M64
> 	FDIVR_M16I                        FDIVR_M32I
> 	FDIVR_M64                         FDIVR_M32
> 	FDIV_M16I
> 
> and when I delete patch16 from sds.lib, I have the error message explaining
> that FDIV_R is missing. So my programm use only FDIV_R.
> 
> Patch16 take 2020 bytes in my exe. Thus I would like to delete in Patch16.obj
> what I don't need to reduce the size of my .exe.
> 
> I tryed to dissassemble it with obj2asm, but I can't reassemble only what I
> want to reduce the size (more than 100 error messages because some things are
> not defined)
> 
> How could I reduce the size of my exe, deleting or extracting what I want in
> Patch16.obj(for example)?
> 
> Thanks for help.

patch16.asm is a file originally supplied by Intel to workaround the pentium floating point bug. It probably isn't necessary at all unless you have such a chip. So I'd ensure you are not compiling anything with -fd

http://www.digitalmars.com/ctg/sc.html#dashfd

> patch16.asm is a file originally supplied by Intel to workaround the
> pentium floating point bug. It probably isn't necessary at all unless
> you have such a chip. So I'd ensure you are not compiling anything with -fd
> http://www.digitalmars.com/ctg/sc.html#dashfd

I don't use any Intel chip. (I don't have a coproccessor).
I compile whith the arguments: -2 -Pz -Jm -R -Ab -gg -msd -o+space -Nc

If my programm doesn't need patch16, how could I disable its utilisation? (when I delete it from sds.lib, It doesn't compile because it lack FDIV_R)

Thanks for help (and sorry for my bad english)

veb wrote:
>> patch16.asm is a file originally supplied by Intel to workaround the
>> pentium floating point bug. It probably isn't necessary at all unless
>> you have such a chip. So I'd ensure you are not compiling anything with -fd
>> http://www.digitalmars.com/ctg/sc.html#dashfd
> 
> I don't use any Intel chip. (I don't have a coproccessor).
> I compile whith the arguments: -2 -Pz -Jm -R -Ab -gg -msd -o+space -Nc
> 
> If my programm doesn't need patch16, how could I disable its utilisation? (when I
> delete it from sds.lib, It doesn't compile because it lack FDIV_R)
> 
> Thanks for help (and sorry for my bad english)
> 

One way is to rebuild sds.lib to without -fd. Another way is to look in sds.lib and remove the module that references FDIV_R. A third way is to provide your own FDIV_R function.