From: Alexandre Courbot <acourbot@nvidia.com>
To: "Miguel Ojeda" <ojeda@kernel.org>,
"Nicolas Schier" <nsc@kernel.org>,
"Boqun Feng" <boqun@kernel.org>, "Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <lossin@kernel.org>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Alice Ryhl" <aliceryhl@google.com>,
"Trevor Gross" <tmgross@umich.edu>,
"Danilo Krummrich" <dakr@kernel.org>,
"David Airlie" <airlied@gmail.com>,
"Simona Vetter" <simona@ffwll.ch>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>
Cc: John Hubbard <jhubbard@nvidia.com>,
Alistair Popple <apopple@nvidia.com>,
Timur Tabi <ttabi@nvidia.com>, Zhi Wang <zhiw@nvidia.com>,
Eliot Courtney <ecourtney@nvidia.com>,
linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
rust-for-linux@vger.kernel.org, nova-gpu@lists.linux.dev,
dri-devel@lists.freedesktop.org,
Alexandre Courbot <acourbot@nvidia.com>
Subject: [PATCH v4 5/6] gpu: drm: nova: build after nova-core and use its symbols
Date: Fri, 05 Jun 2026 17:31:55 +0900 [thread overview]
Message-ID: <20260605-nova-exports-v4-5-e948c287407c@nvidia.com> (raw)
In-Reply-To: <20260605-nova-exports-v4-0-e948c287407c@nvidia.com>
Make nova-core a build dependency of nova-drm, so its crate metadata is
available and up-to-date when the latter is built.
This is intended to be a workaround until the build system supports Rust
cross-crate dependencies natively.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
drivers/gpu/Makefile | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/Makefile b/drivers/gpu/Makefile
index 164e704bc741..a996047be69a 100644
--- a/drivers/gpu/Makefile
+++ b/drivers/gpu/Makefile
@@ -38,3 +38,7 @@ CFLAGS_nova-core/nova_core_exports.o := -I $(objtree)/$(obj)/nova-core
# Output nova-core's crate metadata for use by nova-drm at compile time.
RUSTFLAGS_nova-core/nova_core.o += \
--emit=metadata=$(objtree)/$(obj)/nova-core/libnova_core.rmeta
+
+# Allow nova-drm to import nova-core's types.
+$(obj)/drm/nova/nova.o: $(obj)/nova-core/nova_core.o
+RUSTFLAGS_drm/nova/nova.o := -L $(objtree)/$(obj)/nova-core --extern nova_core
--
2.54.0
next prev parent reply other threads:[~2026-06-05 8:32 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-05 8:31 [PATCH v4 0/6] gpu: drm: nova: enable calling into nova-core Alexandre Courbot
2026-06-05 8:31 ` [PATCH v4 1/6] rust: inline some init methods Alexandre Courbot
2026-06-08 7:05 ` Miguel Ojeda
2026-06-05 8:31 ` [PATCH v4 2/6] gpu: build nova-core and nova-drm from drivers/gpu/Makefile Alexandre Courbot
2026-06-05 8:31 ` [PATCH v4 3/6] gpu: nova-core: export Rust symbols for nova-drm Alexandre Courbot
2026-06-05 8:45 ` sashiko-bot
2026-06-05 8:31 ` [PATCH v4 4/6] gpu: nova-core: emit Rust metadata " Alexandre Courbot
2026-06-05 8:36 ` Miguel Ojeda
2026-06-05 8:31 ` Alexandre Courbot [this message]
2026-06-05 8:31 ` [PATCH POC v4 6/6] gpu: drm: nova: demonstrate interaction with nova-core Alexandre Courbot
2026-06-05 8:45 ` sashiko-bot
2026-06-05 8:48 ` [PATCH v4 0/6] gpu: drm: nova: enable calling into nova-core Miguel Ojeda
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