From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 295E63C4557; Mon, 8 Jun 2026 14:15:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780928142; cv=none; b=oDgcMZRfIqzglrm+ypYSBZgA9+AUxufunnwSnOHaX5hRh8wNU8Ya0iaizuplx0TBnBHFJkugBRTZBRh34iMo5ySsk3g4VtKndvk9ncGM+xDmVNvujpFZSvzOa8T+xnu444Vw1cCixopS6cHPRt0v6vzg9lm7ab/xgeAhST47N8w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780928142; c=relaxed/simple; bh=PsWrefwJbK4Ez8QKCj4L00JlaEsu1dVAINrV6pe7O4I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=T6tHh3Yi1Evjrod2WfLrzTOD0DY2j6ZNxGRvwkXExjMKE6o/T9iReEz0VD9b9Un85in4goZK4wmOtjO1XKgIGbxkTSKrCaZ1d9RUk+X7Zd0zMEAl4KDPh5yazt3tDk12lrsUcYShBkaSy6GOo0VF+qvBtwvaJY/teqdwvowhd/I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dyxYidto; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="dyxYidto" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 746481F00893; Mon, 8 Jun 2026 14:15:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780928140; bh=yTRdyV4febHTt/Y6d9TsH0kgXS0uu7+kEY3Tbta6nmU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=dyxYidtoLP0jdbwpKpKpKcS3iwXoQuVZEfCls8VZ0pXJZjjZoIhSklI9I/CCTLN9E qNyeJoZ2fhtKLM+SSCpsmqzIrks+D4qT1aMcka/yJizs8zxsBDMPwPT88VjjlkLL4A pROA2ubFhEuIY0x1YZSeKVf9M8OY1SBwJOPN7IR0x2hUyaEmfC/B7qnoyH4RV3o5dE hUTJ4k3VVjRYLs9s2eGKyaQAlFSVwq1xZ9zTb0/+p9Ur+qwD9s5k3TsmVyw/DZ+209 6yUjmt1VM2ZkjFrmBEMx7KaodbnboJp9skLOKH1qkLB+mmk9kO61YKNPYnrePz4p65 3XMo/eWIvJsAQ== From: Miguel Ojeda To: Miguel Ojeda , Nathan Chancellor , Nicolas Schier Cc: Boqun Feng , Gary Guo , =?UTF-8?q?Bj=C3=B6rn=20Roy=20Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , rust-for-linux@vger.kernel.org, linux-kbuild@vger.kernel.org, Joshua Liebow-Feeser , Jack Wrenn Subject: [PATCH v2 06/19] rust: kbuild: support per-target environment variables Date: Mon, 8 Jun 2026 16:14:25 +0200 Message-ID: <20260608141439.182634-7-ojeda@kernel.org> In-Reply-To: <20260608141439.182634-1-ojeda@kernel.org> References: <20260608141439.182634-1-ojeda@kernel.org> Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Certain vendored crates, like the upcoming `zerocopy`, use extra environment variables (e.g. via `env!`). Thus add support to easily specify those. Signed-off-by: Miguel Ojeda --- rust/Makefile | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/rust/Makefile b/rust/Makefile index df90fabefb70..9b5a3f9dd934 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -144,6 +144,7 @@ doctests_modifiers_workaround := $(rustdoc_modifiers_workaround)$(if $(call rust quiet_cmd_rustdoc = RUSTDOC $(if $(rustdoc_host),H, ) $< cmd_rustdoc = \ + $(rustc_target_envs) \ OBJTREE=$(abspath $(objtree)) \ $(RUSTDOC) $(filter-out $(skip_flags) --remap-path-scope=%,$(if $(rustdoc_host),$(rust_common_flags),$(rust_flags))) \ $(rustc_target_flags) -L$(objtree)/$(obj) \ @@ -250,6 +251,7 @@ rustdoc-clean: FORCE quiet_cmd_rustc_test_library = $(RUSTC_OR_CLIPPY_QUIET) TL $< cmd_rustc_test_library = \ + $(rustc_target_envs) \ OBJTREE=$(abspath $(objtree)) \ $(RUSTC_OR_CLIPPY) $(filter-out $(skip_flags),$(rust_common_flags) $(rustc_target_flags)) \ @$(objtree)/include/generated/rustc_cfg \ @@ -314,6 +316,7 @@ rusttestlib-uapi: $(src)/uapi/lib.rs rusttestlib-ffi rusttestlib-pin_init FORCE quiet_cmd_rustdoc_test = RUSTDOC T $< cmd_rustdoc_test = \ + $(rustc_target_envs) \ RUST_MODFILE=test.rs \ OBJTREE=$(abspath $(objtree)) \ $(RUSTDOC) --test $(rust_common_flags) \ @@ -328,6 +331,7 @@ quiet_cmd_rustdoc_test_kernel = RUSTDOC TK $< cmd_rustdoc_test_kernel = \ rm -rf $(objtree)/$(obj)/test/doctests/kernel; \ mkdir -p $(objtree)/$(obj)/test/doctests/kernel; \ + $(rustc_target_envs) \ OBJTREE=$(abspath $(objtree)) \ $(RUSTDOC) --test $(filter-out --remap-path-scope=%,$(rust_flags)) \ -L$(objtree)/$(obj) --extern ffi --extern pin_init \ @@ -350,6 +354,7 @@ quiet_cmd_rustdoc_test_kernel = RUSTDOC TK $< # so for the moment we skip `-Cpanic=abort`. quiet_cmd_rustc_test = $(RUSTC_OR_CLIPPY_QUIET) T $< cmd_rustc_test = \ + $(rustc_target_envs) \ OBJTREE=$(abspath $(objtree)) \ $(RUSTC_OR_CLIPPY) --test $(rust_common_flags) \ @$(objtree)/include/generated/rustc_cfg \ @@ -519,6 +524,7 @@ $(obj)/exports_kernel_generated.h: $(obj)/kernel.o FORCE quiet_cmd_rustc_procmacrolibrary = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) PL $@ cmd_rustc_procmacrolibrary = \ + $(rustc_target_envs) \ $(if $(skip_clippy),$(RUSTC),$(RUSTC_OR_CLIPPY)) \ $(filter-out $(skip_flags),$(rust_common_flags) $(rustc_target_flags)) \ --emit=dep-info=$(depfile) --emit=link=$@ --crate-type rlib -O \ @@ -543,6 +549,7 @@ $(obj)/libsyn.rlib: $(src)/syn/lib.rs $(obj)/libquote.rlib FORCE quiet_cmd_rustc_procmacro = $(RUSTC_OR_CLIPPY_QUIET) P $@ cmd_rustc_procmacro = \ + $(rustc_target_envs) \ $(RUSTC_OR_CLIPPY) $(rust_common_flags) $(rustc_target_flags) \ -Clinker-flavor=gcc -Clinker=$(HOSTCC) \ -Clink-args='$(call escsq,$(KBUILD_PROCMACROLDFLAGS))' \ @@ -567,6 +574,7 @@ $(obj)/$(libpin_init_internal_name): $(src)/pin-init/internal/src/lib.rs \ # since Rust 1.95.0 (https://github.com/rust-lang/rust/pull/151534). quiet_cmd_rustc_library = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) L $@ cmd_rustc_library = \ + $(rustc_target_envs) \ OBJTREE=$(abspath $(objtree)) \ $(if $(skip_clippy),$(RUSTC),$(RUSTC_OR_CLIPPY)) \ $(filter-out $(skip_flags),$(rust_flags)) $(rustc_target_flags) \ -- 2.54.0