when gcc support -z ?

[zet]

hello, all

just like the title, when gcc support -z keyword?

if show me the patch, it will be great.

thx

-- 
业精于勤,荒于嬉..

where is the definition of struct gcc_options?

[zet]

Hello, All

I am reading the source of gcc(version 4.8.2), there is a important
symbol 'global_options' whose type is struct gcc_options
in cc1' entry function toplev_main().

I have build the gcc with make -g -O0, in gdb use ptype i can get the
content of struct gcc_options,
but in vim I cannot find its definition.

$ ctags -R/ cscope -R

And other symbol jump is correct, just struct gcc_options.
Did I missing something?

thx

-- 
业精于勤,荒于嬉.

where is the source code generate crtbegin.o (i386)?

[zet]

Hello, all

where is the source code which generate crtbegin.o (i386)?

gcc-6.2.0-source/libgcc/config/i386 only have ctr1.S/crtn.S, where is
the others(crtbegin/crtend/crt1, etc)?


thx

-- 
业精于勤,荒于嬉.

How can distinguish DECL in LTO mode?

[zet]

Hello, everyone.
Sorry to disturb you, but this question confused me several days, I have
searched the GCC source code cannot find the answers.

I know we can distinguish the different DECL tree using DECL_UID in a
translation unit. But when in LTO mode, lto1 combine some input fat object
files. How can I distinguish the different DECL tree may come from
two different object files?

Thanks.