Adjust MIPSEL CI build system changes.

Take MIPSEL out of the GitHub Actions configuration because it fails to
link, and because it makes the build matrix too large.

Author: briansmith

.github/workflows/ci.yml

@@ -247,7 +247,7 @@ jobs:
             host_os: ubuntu-22.04
 
           - target: mipsel-unknown-linux-gnu
-            host_os: ubuntu-18.04
+            host_os: ubuntu-22.04
 
           - target: x86_64-pc-windows-gnu
             host_os: windows-latest

build.rs

@@ -37,15 +37,15 @@ const RING_SRCS: &[(&[&str], &str)] = &[
     (&[], "crypto/fipsmodule/aes/aes_nohw.c"),
     (&[], "crypto/fipsmodule/bn/montgomery.c"),
     (&[], "crypto/fipsmodule/bn/montgomery_inv.c"),
+    (&[], "crypto/fipsmodule/ec/ecp_nistz.c"),
+    (&[], "crypto/fipsmodule/ec/gfp_p256.c"),
+    (&[], "crypto/fipsmodule/ec/gfp_p384.c"),
+    (&[], "crypto/fipsmodule/ec/p256.c"),
     (&[], "crypto/limbs/limbs.c"),
     (&[], "crypto/mem.c"),
     (&[], "crypto/poly1305/poly1305.c"),
 
     (&[AARCH64, ARM, X86_64, X86], "crypto/crypto.c"),
-    (&[AARCH64, ARM, X86_64, X86], "crypto/fipsmodule/ec/ecp_nistz.c"),
-    (&[AARCH64, ARM, X86_64, X86], "crypto/fipsmodule/ec/gfp_p256.c"),
-    (&[AARCH64, ARM, X86_64, X86], "crypto/fipsmodule/ec/gfp_p384.c"),
-    (&[AARCH64, ARM, X86_64, X86], "crypto/fipsmodule/ec/p256.c"),
 
     (&[X86_64, X86], "crypto/cpu_intel.c"),
 

mk/cargo.sh

@@ -20,7 +20,7 @@ IFS=$'\n\t'
 rustflags_self_contained="-Clink-self-contained=yes -Clinker=rust-lld"
 qemu_aarch64="qemu-aarch64 -L /usr/aarch64-linux-gnu"
 qemu_arm="qemu-arm -L /usr/arm-linux-gnueabihf"
-qemu_mipsel="qemu-system-mipsel -L /usr/mipsel-linux-gnu"
+qemu_mipsel="qemu-mipsel -L /usr/mipsel-linux-gnu"
 
 # Avoid putting the Android tools in `$PATH` because there are tools in this
 # directory like `clang` that would conflict with the same-named tools that may

mk/install-build-tools.sh

@@ -74,9 +74,9 @@ case $target in
   ;;
 --target=mipsel-unknown-linux-gnu)
   install_packages \
-    qemu-user \
     gcc-mipsel-linux-gnu \
-    libc6-dev-mipsel-cross
+    libc6-dev-mipsel-cross \
+    qemu-user
   ;;
 --target=wasm32-unknown-unknown)
   cargo install wasm-bindgen-cli --bin wasm-bindgen-test-runner