c++ - Gold linker: specify alignment of sections -

i want specify alignment sections. ld 2.20.0 following approach works:

create linker script containing sections should aligned, e.g.:

sections {     .data align(0x40): { *(.data) }      .text align(0x40): { *(.text) }      .plt align(0x10): { *(.plt) } }

then link with:
```
-rpath-link=/path/to/linkerscript.ld /path/to/linkerscript.ld 
```
e.g. include script in rpath-link , pass 1 of object files.

now, when linking in same way using gold 2.23.1, script rejected error:

linkerscript.ld: sections seen after other input files; try -t/--script

so gold wants me specify complete linker script, want change couple attributes. possible?

i have tried:

passing script -t option. produces broken executable fails start. understand because -t accepts complete linker scripts, while above "annotation" existing script.
in same vein, when passing script -t option ld 2.20.0 fails link since sections unspecified. not "complete" linker script use case.
so have tried obtaining complete linker script. ld --verbose print default linker script. had remove couple of symbols not understood gold, afterwards executable produced -t/path/to/linkerscript.ld option didn't work anymore.
unfortunately gold has no option show default linker script (it doesn't use any).
the man pages not specify how change alignment case above parameter.

any appreciated!

i've found solution solves problem.

alignment of data , text sections can achieved including assembler file dummy alignments. alignment of section maximum alignment sepcified anywhere, @ minimum have alignment.

example file align.s (compile assembler , include object file in link):

     .section .text     .balign 0x40      .section .data     .balign 0x40      .end

the gold linker aligns plt , got entries sizes (16 , 8 bytes, respectively). sufficient use case.

Search