CI: test different compilers

.github/workflows/CI.yml

@@ -37,10 +37,29 @@ jobs:
           else
             export CFLAGS="$CFLAGS -I../fortify-headers -D_FORTIFY_SOURCE=3 -DFORTIFY_PEDANTIC_CHECKS -O3"
           fi
-          make CHECK=1
+          if [[ "${{ matrix.os }}" == ubuntu-* ]]; then
+            sudo apt -y install musl-gcc
+            make CHECK=1 CC=musl-gcc
+            make clean
+            make CHECK=1 CC=clang
+            make clean
+            make CHECK=1 CC=g++
+            make clean
+            make CHECK=1 CC=gcc
+            make clean
+            make CHECK=1
+          elif [[ "${{ matrix.os }}" == macos-* ]]; then
+            make CHECK=1 CC=gcc
+            make clean
+            make CHECK=1 CC=g++
+            make clean
+            make CHECK=1 CC=clang
+            make clean
+            make CHECK=1
+          fi
           sudo ./tests/process_iterator_test
           random_file="$(mktemp $(printf 'X%.0s' $(seq 1 255)))"
-          cp ./tests/process_iterator_test ./tests/${random_file}
+          cp -f ./tests/process_iterator_test ./tests/${random_file}
           echo "./tests/${random_file}"
           sudo ./tests/${random_file}
 
@@ -71,14 +90,20 @@ jobs:
           arch: ${{ matrix.arch }}
           usesh: true
           prepare: |
-            pkg install -y lang/gcc gmake sudo git
+            pkg install -y gcc g++ clang gmake sudo git
           run: |
             git clone https://github.com/jvoisin/fortify-headers
             export CFLAGS="$CFLAGS -I../fortify-headers -D_FORTIFY_SOURCE=3 -DFORTIFY_PEDANTIC_CHECKS -O3"
+            gmake CHECK=1 CC=gcc
+            gmake clean
+            gmake CHECK=1 CC=g++
+            gmake clean
+            gmake CHECK=1 CC=clang
+            gmake clean
             gmake CHECK=1
             sudo ./tests/process_iterator_test
             random_file="$(mktemp $(printf 'X%.0s' $(seq 1 255)))"
-            cp ./tests/process_iterator_test ./tests/${random_file}
+            cp -f ./tests/process_iterator_test ./tests/${random_file}
             echo "./tests/${random_file}"
             sudo ./tests/${random_file}