[ci] streamline workflow file by moving cmake commands to top-level makefile

.github/workflows/build.yml

@@ -68,7 +68,7 @@ jobs:
     if: ${{ fromJSON(needs.change_detect.outputs.source_modified) }}
     name: ${{ matrix.config.name }}
     runs-on: ubuntu-20.04
-    container: ghcr.io/${{ needs.change_detect.outputs.docker_repo }}/openfpga-build-${{ matrix.config.cc}}
+    #container: ghcr.io/${{ needs.change_detect.outputs.docker_repo }}/openfpga-build-${{ matrix.config.cc}}
     # Branch on different OS and settings
     strategy:
       fail-fast: false
@@ -108,11 +108,6 @@ jobs:
     env:
       CC: ${{ matrix.config.cc }}
       CXX: ${{ matrix.config.cxx }}
-      CCACHE_COMPRESS: "true"
-      CCACHE_COMPRESSLEVEL: "6"
-      CCACHE_MAXSIZE: "400M"
-      CCACHE_LOGFILE: ccache_log
-      CCACHE_DIR: /__w/OpenFPGA/.ccache
     steps:
       - name: Cancel previous
         uses: styfle/cancel-workflow-action@0.9.1
@@ -123,54 +118,22 @@ jobs:
         uses: actions/checkout@v2
         with:
           submodules: true
+      
+      - name: Install dependencies
+        run: ./.github/workflow/install_dependencies_build.sh
 
       - name: Dump tool versions
         run: |
           cmake --version
-          iverilog -V
-          vvp -V
+          ${CC} -V
+          ${CXX} -V
 
-      - name: Prepare ccache timestamp
-        id: ccache_cache_timestamp
-        shell: cmake -P {0}
-        run: |
-          string(TIMESTAMP current_date "%Y-%m-%d-%H;%M;%S" UTC)
-          message("::set-output name=timestamp::${current_date}")
-
-      - name: Create CMake build environment
-        # Some projects don't allow in-source building, so create a separate build directory
-        # We'll use this as our working directory for all subsequent commands
-        run: cmake -E make_directory build
-
-      - name: Setup ccache
-        uses: actions/cache@v2
-        with:
-          path: |
-            /__w/OpenFPGA/.ccache
-          key: ${{ matrix.config.cc }}-ccache-${{ github.ref}}
-          restore-keys: |
-            ${{ matrix.config.cc }}-ccache-
-
-      - name: Configure CMake
-        # Use a bash shell so we can use the same syntax for environment variable
-        # access regardless of the host operating system
-        shell: bash
-        working-directory: build
-        # Note the current convention is to use the -S and -B options here to specify source
-        # and build directories, but this is only available with CMake 3.13 and higher.
-        # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
-        #
-        run: |
-          ccache -p
-          ccache -z
-          cmake .. -DCMAKE_BUILD_TYPE=$BUILD_TYPE
+      - uses: hendrikmuhs/ccache-action@v1
 
       - name: Build
-        working-directory: build
         shell: bash
-        # Execute the build.  You can specify a specific target with "--target <NAME>"
         run: |
-          cmake --build . --config $BUILD_TYPE
+          make all BUILD_TYPE=$BUILD_TYPE
 
       # Check the cache size and see if it is over the limit
       - name: Check ccache size

.github/workflows/install_dependencies_build.sh

@@ -1,4 +1,8 @@
-apt-get update && apt-get install -y \
+#!/usr/bin/env bash
+
+apt-get update
+
+apt-get install -y \
     autoconf \
     automake \
     bison \
@@ -40,4 +44,19 @@ apt-get update && apt-get install -y \
     wget \
     zip \
     swig \
-    expect 
+    expect \
+    g++-6 \ 
+    gcc-6 \ 
+    g++-7 \ 
+    gcc-7 \ 
+    g++-8 \ 
+    gcc-8 \ 
+    g++-9 \ 
+    gcc-9 \ 
+    g++-10 \ 
+    gcc-10 \ 
+    g++-11 \ 
+    gcc-11 \ 
+    clang-6.0 \ 
+    clang-7 \ 
+    clang-10

Makefile

@@ -28,6 +28,10 @@ override CMAKE_FLAGS := -DCMAKE_BUILD_TYPE=${BUILD_TYPE} -G 'Unix Makefiles' ${C
 # --output-sync target : For parallel compilation ensure output for each target is synchronized (make version >= 4.0)
 MAKEFLAGS := -s
 
+# Directory to build the codes
+SOURCE_DIR :=${PWD}
+BUILD_DIR ?= build
+
 # Find CMake command from system variable, otherwise use a default one
 ifeq ($(origin CMAKE_COMMAND),undefined)
 CMAKE_COMMAND := cmake
@@ -45,12 +49,7 @@ export COMMENT_EXTRACT
 help:
 	@${PYTHON_EXEC} -c "$$COMMENT_EXTRACT"
 
-.PHONY: all checkout compile
-
-all: checkout
-# Update all the submodules and compile the codebase
-	mkdir -p build && cd build && $(CMAKE_COMMAND) ${CMAKE_FLAGS} ..
-	cd build && $(MAKE)
+.PHONY: all
 
 checkout: 
 # Update all the submodules
@@ -59,20 +58,18 @@ checkout:
 
 compile:
 # Compile the code base
-	mkdir -p build && cd build && $(CMAKE_COMMAND) ${CMAKE_FLAGS} ..
-	cd build && $(MAKE)
+	@mkdir -p ${BUILD_DIR}
+	echo "cd ${BUILD_DIR} && ${CMAKE_COMMAND} ${CMAKE_FLAGS} ${SOURCE_DIR}"
+	cd ${BUILD_DIR} && ${CMAKE_COMMAND} ${CMAKE_FLAGS} ${SOURCE_DIR}
+	echo "Building target(s): ${MAKECMDGOALS}"
+	@+${MAKE} -C ${BUILD_DIR} ${MAKECMDGOALS}
+
+all: checkout compile
+# A shortcut command to run checkout and compile in serial
 
 clean:
 # Remove current build results
-	rm -rf build yosys/install
-
-build/Makefile:
-	make checkout
-
-.PHONY: Makefile
-
-%: build/Makefile
-	cd build && $(MAKE) $@
+	rm -rf ${BUILD_DIR} yosys/install
 
 # Functions to extract comments from Makefiles
 define COMMENT_EXTRACT