wolfssh client app: -E logging, CI coverage, two build/exit fixes

.github/workflows/multi-compiler.yml

@@ -88,7 +88,7 @@ jobs:
           CXX: ${{ matrix.cxx }}
         run: |
           ./autogen.sh
-          ./configure CFLAGS="-Wall -Wextra -Wpedantic"
+          ./configure --enable-sshclient CFLAGS="-Wall -Wextra -Wpedantic"
           make -j$(nproc)
 
       - name: Make dist

.github/workflows/sshd-test.yml

@@ -72,7 +72,7 @@ jobs:
         os: [ ubuntu-latest ]
         wolfssl: ${{ fromJson(needs.create_matrix.outputs['versions']) }}
         mldsa: [ 'yes', 'no' ]
-    name: Build and test wolfsshd
+    name: Build and test the wolfsshd and wolfssh apps
     runs-on: ${{ matrix.os }}
     timeout-minutes: 10
     steps:

apps/wolfssh/README.md

@@ -12,10 +12,18 @@ Phase 2 is going to bring reading the config files `/etc/ssh/ssh_config` and
 `$HOME/.ssh/config`. It will handle OpenSSH style modern keys. It will also
 have support for SSH-AGENT and forwarding.
 
+Every session, terminal or command, runs its I/O on threads, so the client
+needs a threaded wolfSSL. Configuring `--enable-sshclient` against a
+single-threaded wolfSSL is an error, and `--enable-all` leaves the client out
+rather than failing.
+
 Command Line Options
 --------------------
 
-    -E logfile    : Specify a different log file.
+    -E logfile    : Append the log to this file instead of stderr, and turn
+                    logging on. The log is empty unless the library has
+                    logging compiled in, with `--enable-debug` or
+                    `--enable-sshd`.
     -G            : Print out the configuration as used.
     -l login_name : Overrides the login name specified in the destination.
     -p port       : Overrides the destination port number.