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rust: Add option to use sccache

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Using sccache makes recompilation of rustc and Rust packages faster.

This also makes the rust package visible in menuconfig, in order for the
sccache options to be accessible.

Signed-off-by: Jeffery To <jeffery.to@gmail.com>
This commit is contained in:
Jeffery To 2023-09-25 10:00:58 +08:00
parent 0dfc1b508d
commit b4ec017398
No known key found for this signature in database
GPG key ID: C616D9E719E868E4
3 changed files with 31 additions and 1 deletions
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15
lang/rust/Config.in Normal file
View file

@ -0,0 +1,15 @@
menu "Configuration options (for developers)"
config RUST_SCCACHE
bool "Use sccache"
help
Shared compilation cache; see https://github.com/mozilla/sccache
config RUST_SCCACHE_DIR
string "Set sccache directory" if RUST_SCCACHE
default ""
help
Store sccache in this directory.
If not set, uses './.sccache'
endmenu

6
lang/rust/Makefile
View file

@ -30,7 +30,6 @@ define Package/rust
TITLE:=Rust Programming Language Compiler
URL:=https://www.rust-lang.org/
DEPENDS:=$(RUST_ARCH_DEPENDS)
BUILDONLY:=1
endef
define Package/rust/description
@ -39,6 +38,10 @@ define Package/rust/description
guarantee memory safety by using a borrow checker to validate references.
endef
define Package/rust/config
source "$(SOURCE)/Config.in"
endef
# Rust-lang has an uninstall script
RUST_UNINSTALL:=$(STAGING_DIR)/host/lib/rustlib/uninstall.sh
@ -80,6 +83,7 @@ define Host/Uninstall
endef
define Host/Compile
$(RUST_SCCACHE_VARS) \
CARGO_HOME=$(CARGO_HOME) \
OPENWRT_RUSTC_BOOTSTRAP_CACHE=$(DL_DIR)/rustc \
$(PYTHON) $(HOST_BUILD_DIR)/x.py \

11
lang/rust/rust-values.mk
View file

@ -62,12 +62,23 @@ endif
# Support only a subset for now.
RUST_ARCH_DEPENDS:=@(aarch64||arm||i386||i686||mips||mipsel||mips64||mips64el||mipsel||powerpc64||riscv64||x86_64)
ifneq ($(CONFIG_RUST_SCCACHE),)
RUST_SCCACHE_DIR:=$(if $(call qstrip,$(CONFIG_RUST_SCCACHE_DIR)),$(call qstrip,$(CONFIG_RUST_SCCACHE_DIR)),$(TOPDIR)/.sccache)
RUST_SCCACHE_VARS:= \
CARGO_INCREMENTAL=0 \
RUSTC_WRAPPER=sccache \
SCCACHE_DIR=$(RUST_SCCACHE_DIR)
endif
CARGO_HOST_CONFIG_VARS= \
$(RUST_SCCACHE_VARS) \
CARGO_HOME=$(CARGO_HOME)
CARGO_HOST_PROFILE:=release
CARGO_PKG_CONFIG_VARS= \
$(RUST_SCCACHE_VARS) \
CARGO_BUILD_TARGET=$(RUSTC_TARGET_ARCH) \
CARGO_HOME=$(CARGO_HOME) \
CARGO_PROFILE_RELEASE_OPT_LEVEL=s \