Cross-compile on Linux for Solaris x86

[Paul Lucas]

> On May 12, 2022, at 1:37 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
> 
> On Thu, May 12, 2022 at 12:14 PM Paul Lucas via Binutils
> <binutils@sourceware.org> wrote:
>> 
>> Hello -
>> 
>> I’m building a cross-compiled gcc and binutils on Linux x86_64 for Solaris x86_64. The problem is that the executables produced hard-code the wrong path for the dynamic linker and get killed immediately upon launch. In elfxx-x86.c, the path for ELF64_DYNAMIC_INTERPRETER is defined as "/lib/ld64.so.1", but should be "/lib/amd64/ld.so.1" on a Solaris x86_64 system.
>> 
>> I came across this exact problem here:
>> 
>> https://binutils.sourceware.narkive.com/hNh1UFx2/building-a-cross-for-solaris-x86-target#post2
>> 
>> That thread is 15 years (!) old and implies this issue has beed addressed in the binutils 2.17/2.18 timeframe. I’m building binutils 2.32 and still hitting this same problem.
>> 
>> What’s the fix?
> 
> 1. Please get binutils 2.38.

OK, I did.  Same result.

> 2. Configure binutils 2.38 to target Solaris/x86-64.

Specifically, I did:

configure --enable-gold=default --disable-ld --enable-lto --prefix=/solaris-x86_64 --disable-multilib --disable-nls --target=x86_64-sunos-solaris2.11 --with-sysroot=/solaris-x86_64 --disable-werror --enable-plugins

which is what I’ve been doing.

Assuming that you didn’t make a typo when you typed "x86-64” (with a dash, not an underscore), I also tried:

	--target=x86-64-sunos-solaris2.11

but then the target triple parser presumably gets confused and complains:

	Kernel `sunos' not known to work with OS `solaris2.11’

Looking at the binutils source code, the literal string "/lib/ld64.so.1” still occurs and the literal string "/lib/amd64/ld.so.1” still doesn’t.

- Paul