build: adding tasks for building riscv-tests in container (#823)

- Added newlib package to container.
- Renamed task "checkout-riscv-tests" to "checkout_riscv_test" for
consistency
- Added task build_riscv_tests

Note: build_riscv_tests task builds the isa tests part of riscv-tests to
enable testing of hart models with the ISS.
Benchmarks are not built at the moment.

Author: henrikg-qc

.devcontainer/Dockerfile

@@ -26,6 +26,7 @@ RUN \
     libc6-dev-riscv64-cross \
     libelf-dev \
     libgmp-dev \
+    libnewlib-dev\
     libyaml-dev \
     nodejs \
     npm \

backends/cpp_hart_gen/tasks.rake

@@ -361,7 +361,13 @@ file "#{$root}/ext/riscv-tests/env/LICENSE" => ["#{$root}/ext/riscv-tests/LICENS
   end
 end
 
-task "checkout-riscv-tests" => "#{$root}/ext/riscv-tests/env/LICENSE"
+task checkout_riscv_tests: "#{$root}/ext/riscv-tests/env/LICENSE"
+
+task build_riscv_tests: "checkout_riscv_tests" do
+  Dir.chdir "#{$root}/ext/riscv-tests/isa" do
+    sh "make RISCV_GCC_OPTS='-static -mcmodel=medany -fvisibility=hidden -nostdlib -nostartfiles -I/usr/include/newlib'"
+  end
+end
 
 file "#{CPP_HART_GEN_DST}/riscv-tests-build-64/Makefile" => "#{$root}/ext/riscv-tests/env/LICENSE" do |t|
   FileUtils.mkdir_p File.dirname(t.name)

bin/.container-tag

@@ -1 +1 @@
-0.8
+0.9

container.def

@@ -29,6 +29,7 @@ From: ubuntu:24.04
     libc6-dev-riscv64-cross \
     libelf-dev \
     libgmp-dev \
+    libnewlib-dev \
     libyaml-dev \
     nodejs \
     npm \