Re: [PATCH v2 2/4] parisc: Makefile: use the regular compiler to build a native 32-bit vDSO

[Thomas Weißschuh]

On 2026-04-08 21:01:45+0200, Helge Deller wrote:
> On 4/8/26 20:18, Thomas Weißschuh wrote:
> > When building a native 32-bit kernel $(CC) the compiler is obviously
> > able to compile 32-bit code. There is no need to force the user to
> > configure a dedicated 32-bit compiler.
> 
> I'm not sure, but still I think this logic of your patches #1 and #2
> may break the builds for others.
> That said, I'd prefer if we can get it working without your patches #1 and #2.
> Can't we do without them?

They are mostly do avoid hacks in the nolibc testsuite.
I'll drop them and use this instead:

--- a/tools/testing/selftests/nolibc/run-tests.sh
+++ b/tools/testing/selftests/nolibc/run-tests.sh
@@ -175,6 +175,10 @@ test_arch() {
 	fi
 	MAKE=(make -f Makefile.nolibc -j"${nproc}" XARCH="${arch}" CROSS_COMPILE="${cross_compile}" LLVM="${llvm}" O="${build_dir}")
 
+	if [ "$arch" = "parisc32" ]; then
+		MAKE+=("CROSS32CC=${cross_compile}gcc")
+	fi
+
 	case "$test_mode" in
 		'system')
 			test_target=run

However in the long-term it would be nice not the need it anymore.
Afaik is parisc the only architecture which needs a special compiler
specification for the native vDSO.

> I tried your patch series, but they fail to apply to my series or
> upstream.

These patches are currently based on nolibc/for-next

https://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc.git/log/?h=for-next


Thomas