fix: rust fix for aarch64 (#46)

* fix: rust fix for aarch64

* fix: revert target change when sourcing switch-arm

Author: NoaHimesaka1873

rust/Dockerfile

@@ -12,5 +12,8 @@ RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y -q \
 # Add rust binaries to PATH
 ENV PATH="$PATH:/root/.cargo/bin"
 
+# Set default build target to armv7
+ENV CARGO_BUILD_TARGET="armv7-unknown-linux-gnueabihf"
+
 # Target reMarkable architecture by default
 COPY config /root/.cargo/config

rust/config

@@ -1,6 +1,3 @@
-[build]
-target = "armv7-unknown-linux-gnueabihf"
-
 [target.armv7-unknown-linux-gnueabihf]
 linker = "arm-linux-gnueabihf-gcc"
 rustflags = [
@@ -10,3 +7,10 @@ rustflags = [
     "-C", "link-arg=-mfloat-abi=hard",
     "-C", "link-arg=-mcpu=cortex-a9",
 ]
+
+[target.aarch64-unknown-linux-gnu]
+linker = "aarch64-remarkable-linux-gnu-gcc"
+rustflags = [
+    "-C", "link-arg=-march=armv8-a+crc+crypto",
+    "-C", "link-arg=-mtune=cortex-a53",
+]

toolchain/Dockerfile

@@ -157,21 +157,23 @@ export CHOST="$CHOST"
 export CROSS_COMPILE="$CHOST-"
 export PKG_CONFIG_LIBDIR="/opt/x-tools/$NGCONFIG/$NGCONFIG/sysroot/usr/lib/pkgconfig:/opt/x-tools/$NGCONFIG/$NGCONFIG/sysroot/lib/pkgconfig:/opt/x-tools/$NGCONFIG/$NGCONFIG/sysroot/opt/lib/pkgconfig"
 export PKG_CONFIG_SYSROOT_DIR="/opt/x-tools/$NGCONFIG/$NGCONFIG/sysroot"
-SYSROOT="/opt/x-tools/$NGCONFIG/$NGCONFIG/sysroot"
-NGCONFIG="$NGCONFIG"
+export SYSROOT="/opt/x-tools/$NGCONFIG/$NGCONFIG/sysroot"
+export NGCONFIG="$NGCONFIG"
 export TARGET_PREFIX="$CHOST"
+export CARGO_BUILD_TARGET="armv7-unknown-linux-gnueabihf"
 EOF
 
 RUN touch /opt/x-tools/switch-aarch64.sh && chmod +x /opt/x-tools/switch-aarch64.sh && cat <<EOF > /opt/x-tools/switch-aarch64.sh
 export ARCH=aarch64
 export CHOST="$CHOST_AARCH64"
 export CROSS_COMPILE="$CHOST_AARCH64-"
-export PATH="$PATH:/opt/x-tools/$NGCONFIG_AARCH64/bin"
+export PATH="\$PATH:/opt/x-tools/$NGCONFIG_AARCH64/bin"
 export PKG_CONFIG_LIBDIR="/opt/x-tools/$NGCONFIG_AARCH64/$NGCONFIG_AARCH64/sysroot/usr/lib/pkgconfig:/opt/x-tools/$NGCONFIG_AARCH64/$NGCONFIG_AARCH64/sysroot/lib/pkgconfig:/opt/x-tools/$NGCONFIG_AARCH64/$NGCONFIG_AARCH64/sysroot/opt/lib/pkgconfig"
 export PKG_CONFIG_SYSROOT_DIR="/opt/x-tools/$NGCONFIG_AARCH64/$NGCONFIG_AARCH64/sysroot"
 export SYSROOT="/opt/x-tools/$NGCONFIG_AARCH64/$NGCONFIG_AARCH64/sysroot"
 export NGCONFIG="$NGCONFIG_AARCH64"
 export TARGET_PREFIX="$CHOST_AARCH64"
+export CARGO_BUILD_TARGET="aarch64-unknown-linux-gnu"
 EOF
 
 # Configure Opkg