diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8b269bd9..d95d0af9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -40,20 +40,20 @@ jobs:
     - name: Distcheck
       run: make distcheck DISTCHECK_CONFIGURE_FLAGS=--enable-werror
 
-  build-ubuntu-latest-hwloc:
+  build-ubuntu-latest-full-featured:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
     - name: Install Dependencies
-      run: sudo apt-get install libncursesw5-dev libhwloc-dev
+      run: sudo apt-get install libncursesw5-dev libhwloc-dev libnl-3-dev libnl-genl-3-dev
     - name: Bootstrap
       run: ./autogen.sh
     - name: Configure
-      run: ./configure --enable-werror --enable-hwloc
+      run: ./configure --enable-werror --enable-openvz --enable-cgroup --enable-vserver --enable-ancient-vserver --enable-taskstats --enable-unicode --enable-linux-affinity --enable-hwloc --enable-setuid --enable-delayacct
     - name: Build
       run: make
     - name: Distcheck
-      run: make distcheck DISTCHECK_CONFIGURE_FLAGS='--enable-werror --enable-hwloc'
+      run: make distcheck DISTCHECK_CONFIGURE_FLAGS='--enable-werror --enable-openvz --enable-cgroup --enable-vserver --enable-ancient-vserver --enable-taskstats --enable-unicode --enable-linux-affinity --enable-hwloc --enable-setuid --enable-delayacct'
 
   whitespace_check:
     runs-on: ubuntu-latest
diff --git a/configure.ac b/configure.ac
index 18291b95..b98dacc0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -111,20 +111,12 @@ AC_SUBST(wextra_flag)
 # ----------------------------------------------------------------------
 PROCDIR=/proc
 
-AC_ARG_ENABLE(proc, [AS_HELP_STRING([--enable-proc], [use Linux-compatible proc filesystem])], enable_proc="yes", enable_proc="no")
-if test "x$enable_proc" = xyes; then
-   # An enabled proc assumes we're emulating Linux.
-   my_htop_platform=linux
-   AC_DEFINE(HAVE_PROC, 1, [Define if using a Linux-compatible proc filesystem.])
-fi
-
 AC_ARG_WITH(proc, [AS_HELP_STRING([--with-proc=DIR], [Location of a Linux-compatible proc filesystem (default=/proc).])],
-
-if test -n "$withval"; then
-   AC_DEFINE_UNQUOTED(PROCDIR, "$withval", [Path of proc filesystem])
-   PROCDIR="$withval"
-fi,
-AC_DEFINE(PROCDIR, "/proc", [Path of proc filesystem]))
+  if test -n "$withval"; then
+    AC_DEFINE_UNQUOTED(PROCDIR, "$withval", [Path of proc filesystem])
+    PROCDIR="$withval"
+  fi,
+  AC_DEFINE(PROCDIR, "/proc", [Path of proc filesystem]))
 
 if test "x$cross_compiling" = xno; then
    if test "x$enable_proc" = xyes; then
@@ -340,3 +332,20 @@ then
    echo "****************************************************************"
    echo ""
 fi
+
+AC_MSG_RESULT([
+  ${PACKAGE_NAME} ${VERSION}
+
+  platform:                $my_htop_platform
+  proc directory:          $PROCDIR
+  openvz:                  $enable_openvz
+  cgroup:                  $enable_cgroup
+  vserver:                 $enable_vserver
+  ancient vserver:         $enable_ancient_vserver
+  taskstats:               $enable_taskstats
+  unicode:                 $enable_unicode
+  linux affinity:          $enable_linux_affinity
+  hwlock:                  $enable_hwloc
+  setuid:                  $enable_setuid
+  linux delay accounting:  $enable_delayacct
+])
diff --git a/htop.c b/htop.c
index bdaeb844..d9302a0c 100644
--- a/htop.c
+++ b/htop.c
@@ -198,7 +198,7 @@ int main(int argc, char** argv) {
 
    CommandLineSettings flags = parseArguments(argc, argv); // may exit()
 
-#ifdef HAVE_PROC
+#ifdef HTOP_LINUX
    if (access(PROCDIR, R_OK) != 0) {
       fprintf(stderr, "Error: could not read procfs (compiled to look in %s).\n", PROCDIR);
       exit(1);
diff --git a/linux/LinuxProcessList.c b/linux/LinuxProcessList.c
index 2919d4b8..732a86b7 100644
--- a/linux/LinuxProcessList.c
+++ b/linux/LinuxProcessList.c
@@ -578,7 +578,7 @@ static void LinuxProcessList_readOpenVZData(LinuxProcess* process, const char* d
    FILE* file = fopen(filename, "r");
    if (!file)
       return;
-   (void) fscanf(file,
+   (void)! fscanf(file,
       "%*32u %*32s %*1c %*32u %*32u %*32u %*32u %*32u %*32u %*32u "
       "%*32u %*32u %*32u %*32u %*32u %*32u %*32u %*32u "
       "%*32u %*32u %*32u %*32u %*32u %*32u %*32u %*32u "