Replace travis-ci with github actions

- By adding .github/workflows/automated-tests.yml
- triggered when pushed to branches devel, main, or master
- triggered for any pull request
- removed installing pyelftools since it is no longer a dependency
- removed top-level make build, since it does nothing now
- other than that, it's identical to the travis-ci setup

.github/workflows/automated-tests.yml

@@ -0,0 +1,33 @@
+name: Automated Tests
+
+on:
+  push:
+    branches: [ devel, master, main ]
+  pull_request:
+
+jobs:
+  automated-tests:
+    runs-on: ubuntu-latest
+
+    # matrix docs: https://docs.github.com/en/actions/learn-github-actions/workflow-syntax-for-github-actions#jobsjob_idstrategymatrix
+    strategy:
+      matrix:
+        include:
+          - name: openmpi
+            packages: libopenmpi-dev openmpi-bin
+          - name: mpich
+            packages: libmpich-dev mpich
+          - name: none
+            packages:
+
+    steps:
+      - name: install dependencies
+        run: >
+          sudo apt-get update &&
+          sudo apt-get install python3 python3-pip ${{ matrix.packages }} &&
+          pip3 install --user setuptools toml
+      - uses: actions/checkout@v2
+      - name: build tests
+        run: make -C tests -j ${{ steps.cpu-cores.outputs.count }}
+      - name: run tests
+        run: make check

tests/color_out.mk

@@ -1,6 +1,9 @@
 ECHO            := printf "%s"
 ECHO_NEWLINE    := printf "%s\n"
-NCOLORS         := $(shell tput colors)
+
+# Call TPUT in the shell for one argument ($1)
+TPUT             = $(shell tput $1 2>/dev/null)
+NCOLORS         := $(call TPUT,colors)
 
 # A Makefile function
 # @param 1: color (e.g., BLUE or GREEN)
@@ -21,21 +24,21 @@ print_impl = \
     $1 "$3"; \
   fi
 
-BASH_CLEAR    := $(shell tput sgr0)
-BASH_BOLD     := $(shell tput bold)
-BASH_BLACK    := $(shell tput setaf 0)
-BASH_RED      := $(shell tput setaf 1)
-BASH_GREEN    := $(shell tput setaf 2)
-BASH_YELLOW   := $(shell tput setaf 3)
-BASH_BLUE     := $(shell tput setaf 4)
-BASH_PURPLE   := $(shell tput setaf 5)
-BASH_CYAN     := $(shell tput setaf 6)
-BASH_WHITE    := $(shell tput setaf 7)
-BASH_BROWN    := $(shell tput setaf 94)
-BASH_GRAY     := $(shell tput setaf 245)
+BASH_CLEAR    := $(call TPUT,sgr0)
+BASH_BOLD     := $(call TPUT,bold)
+BASH_BLACK    := $(call TPUT,setaf 0)
+BASH_RED      := $(call TPUT,setaf 1)
+BASH_GREEN    := $(call TPUT,setaf 2)
+BASH_YELLOW   := $(call TPUT,setaf 3)
+BASH_BLUE     := $(call TPUT,setaf 4)
+BASH_PURPLE   := $(call TPUT,setaf 5)
+BASH_CYAN     := $(call TPUT,setaf 6)
+BASH_WHITE    := $(call TPUT,setaf 7)
+BASH_BROWN    := $(call TPUT,setaf 94)
+BASH_GRAY     := $(call TPUT,setaf 245)
 BASH_GREY     := $(BASH_GRAY)
-BASH_DARKGRAY := $(shell tput setaf 240)
+BASH_DARKGRAY := $(call TPUT,setaf 240)
 BASH_DARKGREY := $(BASH_DARKGRAY)
-BASH_LIGHTGRAY:= $(shell tput setaf 250)
+BASH_LIGHTGRAY:= $(call TPUT,setaf 250)
 BASH_LIGHTGREY:= $(BASH_LIGHTGRAY)