Resolve "Use dependencies instead of makefile chaining"

.gitlab-ci.yml

@@ -20,9 +20,23 @@ variables:
      GIT_SUBMODULE_STRATEGY: recursive
 
 stages:          # List of stages for jobs, and their order of execution
+  - toolchain
   - build
 
-build-fpga:       # This job runs in the build stage, which runs first.
+build toolchain:
+  tags:
+    - linux
+  stage: toolchain
+  script:
+    - source init_env.sh
+    - cd sw/cc65
+    - make -j
+  artifacts:
+    paths:
+      - sw/cc65/bin
+      - sw/cc65/lib
+
+build fpga:       # This job runs in the build stage, which runs first.
   tags:
     - efinity
     - linux
@@ -32,15 +46,36 @@ build-fpga:       # This job runs in the build stage, which runs first.
     - cd hw/efinix_fpga
     - make
 
-build-sim:
+build sim:
   tags:
    - iverilog
    - linux
   stage: build
   script:  
     - source init_env.sh
-    - cd sw/cc65
-    - make -j
-    - cd ../..
     - cd hw/efinix_fpga/simulation
     - make
+  dependencies:
+    - build toolchain
+
+build bios:
+  tags:
+    - linux
+  stage: build
+  script:
+    - source init_env.sh
+    - cd sw/
+    - make bios
+  dependencies:
+    - build toolchain
+
+build kernel:
+  tags:
+    - linux
+  stage: build
+  script:
+    - source init_env.sh
+    - cd sw/
+    - make kernel
+  dependencies:
+    - build toolchain