Test all available clang and gcc versions.

.github/configs

@@ -28,6 +28,9 @@ case "$config" in
 	CONFIGFLAGS="--without-openssl --without-zlib"
 	TEST_TARGET=t-exec
 	;;
+    clang*|gcc*)
+	CC="$config"
+	;;
     kitchensink)
 	CONFIGFLAGS="--with-kerberos5 --with-libedit --with-pam"
 	CONFIGFLAGS="${CONFIGFLAGS} --with-security-key-builtin --with-selinux"

.github/setup_ci.sh

@@ -28,6 +28,9 @@ for TARGET in $TARGETS; do
     default|without-openssl|without-zlib|c89)
         # nothing to do
         ;;
+    clang-*|gcc-*)
+        PACKAGES="$PACKAGES $TARGET"
+        ;;
     kerberos5)
         PACKAGES="$PACKAGES heimdal-dev"
         #PACKAGES="$PACKAGES libkrb5-dev"

.github/workflows/c-cpp.yml

@@ -24,6 +24,16 @@ jobs:
           - { os: ubuntu-20.04, configs: valgrind-4 }
           - { os: ubuntu-20.04, configs: valgrind-unit }
           - { os: ubuntu-20.04, configs: c89 }
+          - { os: ubuntu-20.04, configs: clang-6.0 }
+          - { os: ubuntu-20.04, configs: clang-8 }
+          - { os: ubuntu-20.04, configs: clang-9 }
+          - { os: ubuntu-20.04, configs: clang-10 }
+          - { os: ubuntu-20.04, configs: clang-11 }
+          - { os: ubuntu-20.04, configs: clang-12 }
+          - { os: ubuntu-20.04, configs: gcc-7 }
+          - { os: ubuntu-20.04, configs: gcc-8 }
+          - { os: ubuntu-20.04, configs: gcc-10 }
+          - { os: ubuntu-20.04, configs: gcc-11 }
           - { os: ubuntu-20.04, configs: pam }
           - { os: ubuntu-20.04, configs: kitchensink }
           - { os: ubuntu-20.04, configs: hardenedmalloc }