rustup: switch to nightly channel

1. unlock -Z option support.
2. download rust-src, for build rust stdlib from source.
3. enable parallel-rustc, for faster compile.
4. libdovi,rav1e: enable build-std, use gnullvm target for clang.

This will unlock aarch64 support.
build-std is for unlocking gnullvm target,
but gnu target can also use this to get latest std and some linker opt from gcc/clang wrapper for free.

Author: Andarwinux

cargo_config.in

@@ -4,8 +4,17 @@ git-fetch-with-cli = true
 [target.@TARGET_CPU@-pc-windows-gnu]
 linker = "@CMAKE_INSTALL_PREFIX@/bin/@TARGET_ARCH@-gcc"
 ar = "@CMAKE_INSTALL_PREFIX@/bin/@TARGET_ARCH@-ar"
-rustflags = ["-C", "target-cpu=@GCC_ARCH@"]
+rustflags = ["-C", "target-cpu=@GCC_ARCH@", "-Z", "threads=@CPU_COUNT@"]
+
+[target.@TARGET_CPU@-pc-windows-gnullvm]
+linker = "@CMAKE_INSTALL_PREFIX@/bin/@TARGET_ARCH@-clang"
+ar = "@CMAKE_INSTALL_PREFIX@/bin/@TARGET_ARCH@-ar"
+rustflags = ["-C", "target-cpu=@GCC_ARCH@", "-C", "control-flow-guard=yes", "-Z", "threads=@CPU_COUNT@"]
 
 [profile.release]
 panic = "abort"
 strip = true
+opt-level = 3
+
+[build]
+rustflags = ["-Z", "threads=@CPU_COUNT@"]

cmake/packages_check.cmake

@@ -9,6 +9,7 @@ if(COMPILER_TOOLCHAIN STREQUAL "gcc")
     set(mpv_add_debuglink COMMAND ${EXEC} ${TARGET_ARCH}-objcopy --only-keep-debug <BINARY_DIR>/mpv.exe <BINARY_DIR>/mpv.debug
                           COMMAND ${EXEC} ${TARGET_ARCH}-strip -s <BINARY_DIR>/mpv.exe
                           COMMAND ${EXEC} ${TARGET_ARCH}-objcopy --add-gnu-debuglink=<BINARY_DIR>/mpv.debug <BINARY_DIR>/mpv.exe)
+    set(rust_target "gnu")
 elseif(COMPILER_TOOLCHAIN STREQUAL "clang")
     set(vapoursynth_pkgconfig_libs "-lVapourSynth -Wl,-delayload=VapourSynth.dll")
     set(vapoursynth_script_pkgconfig_libs "-lVSScript -Wl,-delayload=VSScript.dll")
@@ -18,9 +19,10 @@ elseif(COMPILER_TOOLCHAIN STREQUAL "clang")
     set(ffmpeg_hardcoded_tables "--enable-hardcoded-tables")
     set(mpv_lto_mode "-Db_lto_mode=thin")
     set(mpv_copy_debug COMMAND ${CMAKE_COMMAND} -E copy <BINARY_DIR>/mpv.pdb ${CMAKE_CURRENT_BINARY_DIR}/mpv-debug/mpv.pdb)
+    set(rust_target "gnullvm")
     if(CLANG_PACKAGES_LTO)
         set(cargo_lto_rustflags "CARGO_PROFILE_RELEASE_LTO=thin
-                                 RUSTFLAGS='-C linker-plugin-lto -C embed-bitcode -C lto=thin'")
+                                 RUSTFLAGS='-C target-cpu=${GCC_ARCH} -C control-flow-guard=yes -C linker-plugin-lto -C embed-bitcode -C lto=thin -Z threads=${CPU_COUNT}'")
         set(ffmpeg_lto "--enable-lto=thin")
         set(x264_lto "--enable-lto")
         if(GCC_ARCH_HAS_AVX)

packages/libdovi.cmake

@@ -10,12 +10,12 @@ ExternalProject_Add(libdovi
     CONFIGURE_COMMAND ""
     BUILD_COMMAND ${EXEC}
         CARGO_BUILD_TARGET_DIR=<BINARY_DIR>
-        CARGO_PROFILE_RELEASE_CODEGEN_UNITS=1
         ${cargo_lto_rustflags}
         cargo cinstall
         --manifest-path <SOURCE_DIR>/dolby_vision/Cargo.toml
         --prefix ${MINGW_INSTALL_PREFIX}
-        --target ${TARGET_CPU}-pc-windows-gnu
+        --target ${TARGET_CPU}-pc-windows-${rust_target}
+        -Z build-std=std,panic_abort,core,alloc
         --release
         --library-type staticlib
     INSTALL_COMMAND ""

packages/rav1e.cmake

@@ -7,17 +7,16 @@ ExternalProject_Add(rav1e
     CONFIGURE_COMMAND ""
     BUILD_COMMAND ${EXEC}
         CARGO_BUILD_TARGET_DIR=<BINARY_DIR>
-        CARGO_PROFILE_RELEASE_CODEGEN_UNITS=1
         CARGO_PROFILE_RELEASE_DEBUG=false
         CARGO_PROFILE_RELEASE_INCREMENTAL=false
         CARGO_PROFILE_RELEASE_LTO=off
         ${cargo_lto_rustflags}
         cargo cinstall
         --manifest-path <SOURCE_DIR>/Cargo.toml
         --prefix ${MINGW_INSTALL_PREFIX}
-        --target ${TARGET_CPU}-pc-windows-gnu
+        --target ${TARGET_CPU}-pc-windows-${rust_target}
+        -Z build-std=std,panic_abort,core,alloc
         --release
-        --crt-static
         --library-type staticlib
     INSTALL_COMMAND ""
     LOG_DOWNLOAD 1 LOG_UPDATE 1 LOG_CONFIGURE 1 LOG_BUILD 1 LOG_INSTALL 1

toolchain/rustup.cmake

@@ -4,8 +4,9 @@ ExternalProject_Add(rustup
     SOURCE_DIR rustup-prefix/src
     CONFIGURE_COMMAND ${EXEC} CONF=1
         curl -sSf https://sh.rustup.rs |
-        sh -s -- -y --default-toolchain stable --target x86_64-pc-windows-gnu,i686-pc-windows-gnu --no-modify-path --profile minimal
+        sh -s -- -y --default-toolchain nightly --no-modify-path --profile minimal
     BUILD_COMMAND ${EXEC} rustup update
+          COMMAND ${EXEC} rustup component add rust-src
     INSTALL_COMMAND ${EXEC} cargo install cargo-c --profile=release-strip --features=vendored-openssl
     LOG_CONFIGURE 1 LOG_BUILD 1 LOG_INSTALL 1
 )