Only load shared libraries when needed

libzmq and libssl are only needed when running in standalone mode.
Unload the shared objects before dumping the image (so that the
implementation does not try to load them automatically on startup),
and only load them when running in server mode.

README.org

@@ -11,7 +11,7 @@ This is ~pastelyzer~: the paste analyzer.  The user manual can be found in
 
 The easiest way to run ~pastelyzer~ is by using the provided binary.
 
-* Runtime dependencies
+* Runtime dependencies (standalone mode only)
 ** Libraries
 
 The following libraries must be installed on the target system:
@@ -26,9 +26,8 @@ The following libraries must be installed on the target system:
 
 ** Database
 
-To run ~pastelyzer~ in standalone mode a PostgreSQL database (at least version
-*9.5*) is required.  Use the SQL script in
-[[file:support/schema.sql][support/schema.sql]] to initialize the database:
+PostgreSQL database (at least version *9.5*) is required.  Use the SQL script
+in [[file:support/schema.sql][support/schema.sql]] to initialize the database:
 
 #+BEGIN_EXAMPLE
   $ psql -d pastelyzer < support/schema.sql

bin/build.sh

@@ -147,6 +147,10 @@ case "$OPERATION" in
         --eval "(asdf:load-system \"pastelyzer\")" \
         --eval "(setq pastelyzer::*build-id* ${BUILD_ID})" \
         --eval "(proclaim '(optimize (speed 2) (safety 1)))" \
+        --eval "(asdf:load-system \"pastelyzer\")" \
+        --eval "(cffi:close-foreign-library 'pzmq::libzmq)" \
+        --eval "(cffi:close-foreign-library 'cl+ssl::libssl)" \
+        --eval "(cffi:close-foreign-library 'cl+ssl::libcrypto)" \
         --eval "(asdf:make \"pastelyzer\")"
     if [ -f "${BINDIR}/pastelyzer" ]; then
       mv -f "${BINDIR}/pastelyzer" "${BINDIR}/pastelyzer.old"

src/pastelyzer.lisp

@@ -338,6 +338,13 @@
     (setf (puri:uri-host *web-server-external-uri*) web-server-external-host))
   (when web-server-external-port
     (setf (puri:uri-port *web-server-external-uri*) web-server-external-port))
+
+  ;; We unload foreign libraries required to run in server mode before
+  ;; dumping the image so that the CLI version can be used without
+  ;; these.
+  (cl+ssl:reload)
+  (cffi:load-foreign-library 'pzmq::libzmq)
+
   (let* ((store-queue (create-queue :store))
          (process-queue (create-queue :process))
          ;; Separate queue for big pastes.