cmake(ci): rework toolchain target

* Add toolchain_ prefix to avoid conflict with "platform" targets
* Update workflows
* Fix mipsel/mips64el target in cross_compile.sh

.github/workflows/aarch64_toolchain.yml

@@ -2,22 +2,22 @@ name: aarch64 Toolchain
 
 on: [push, pull_request, workflow_dispatch]
 
+# Building using the github runner environement directly.
 jobs:
-  # Building using the github runner environement directly.
   aarch64:
-    runs-on: ubuntu-latest
     strategy:
       matrix:
-        targets: [
-          [aarch64], # bootlin
-          [aarch64be] # bootlin
-        ]
+        targets: [aarch64, aarch64be]
       fail-fast: false
-    env:
-      TARGET: ${{ matrix.targets[0] }}
+    name: Linux • Toolchain ${{ matrix.targets }}
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - name: Build
-      run: make --directory=cmake ${TARGET}_build
-    - name: Test
-      run: make --directory=cmake ${TARGET}_test
+    - name: Build env stage
+      run: make --directory=cmake toolchain_${{ matrix.targets }}_env
+    - name: Build devel stage
+      run: make --directory=cmake toolchain_${{ matrix.targets }}_devel
+    - name: Build build stage
+      run: make --directory=cmake toolchain_${{ matrix.targets }}_build
+    - name: Build Test stage
+      run: make --directory=cmake toolchain_${{ matrix.targets }}_test

.github/workflows/mips_toolchain.yml

@@ -2,22 +2,22 @@ name: mips Toolchain
 
 on: [push, pull_request, workflow_dispatch]
 
+# Building using the github runner environement directly.
 jobs:
-  # Building using the github runner environement directly.
   mips:
-    runs-on: ubuntu-latest
     strategy:
       matrix:
-        targets: [
-          [mips64],
-          [mips64el]
-        ]
+        targets: [mips64, mips64el]
       fail-fast: false
-    env:
-      TARGET: ${{ matrix.targets[0] }}
+    name: Linux • Toolchain ${{ matrix.targets }}
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - name: Build
-      run: make --directory=cmake ${TARGET}_build
-    - name: Test
-      run: make --directory=cmake ${TARGET}_test
+    - name: Build env stage
+      run: make --directory=cmake toolchain_${{ matrix.targets }}_env
+    - name: Build devel stage
+      run: make --directory=cmake toolchain_${{ matrix.targets }}_devel
+    - name: Build build stage
+      run: make --directory=cmake toolchain_${{ matrix.targets }}_build
+    - name: Build Test stage
+      run: make --directory=cmake toolchain_${{ matrix.targets }}_test

.github/workflows/powerpc_toolchain.yml

@@ -2,22 +2,22 @@ name: powerpc Toolchain
 
 on: [push, pull_request, workflow_dispatch]
 
+# Building using the github runner environement directly.
 jobs:
-  # Building using the github runner environement directly.
   powerpc:
-    runs-on: ubuntu-latest
     strategy:
       matrix:
-        targets: [
-          [ppc64],
-          [ppc64le],
-        ]
+        targets: [ppc64, ppc64le]
       fail-fast: false
-    env:
-      TARGET: ${{ matrix.targets[0] }}
+    name: Linux • Toolchain ${{ matrix.targets }}
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - name: Build
-      run: make --directory=cmake ${TARGET}_build
-    - name: Test
-      run: make --directory=cmake ${TARGET}_test
+    - name: Build env stage
+      run: make --directory=cmake toolchain_${{ matrix.targets }}_env
+    - name: Build devel stage
+      run: make --directory=cmake toolchain_${{ matrix.targets }}_devel
+    - name: Build build stage
+      run: make --directory=cmake toolchain_${{ matrix.targets }}_build
+    - name: Build Test stage
+      run: make --directory=cmake toolchain_${{ matrix.targets }}_test