Added support for optional libz.

BuildOptions.cmake

@@ -69,5 +69,4 @@ set(BinPAC_SKIP_INSTALL true)
 
 # TODO: more dependencies:
 # LibGeoIP
-# Libz
 # Google perftools

CMakeLists.txt

@@ -99,8 +99,12 @@ if (LIBMAGIC_FOUND)
     set(HAVE_LIBMAGIC true)
 endif ()
 
+find_package(ZLIB)
+if (ZLIB_FOUND)
+    set(HAVE_LIBZ true)
+endif ()
+
 # TODO: optional libGeoIP
-# TODO: optional libz
 # TODO: optional Google perftools
 
 ##
@@ -155,7 +159,7 @@ message(
     "\nBroccoli:          ${use_broccoli}"
     "\nBroctl:            ${use_broctl}"
     "\nGeoIP:             ${use_geoip}"
-    "\nlibz:              ${use_libz}"
+    "\nlibz:              ${HAVE_LIBZ}"
     "\nlibmagic:          ${HAVE_LIBMAGIC}"
     "\nGoogle perftools:  ${use_perftools}"
     "\n"

config.h.in

@@ -23,8 +23,8 @@
 /* Define if you have the `magic' library (-lmagic). */
 #cmakedefine HAVE_LIBMAGIC
 
-/* Define to 1 if you have the `z' library (-lz). */
-#undef HAVE_LIBZ
+/* Define if you have the `z' library (-lz). */
+#cmakedefine HAVE_LIBZ
 
 /* We are on a Linux system */
 #cmakedefine HAVE_LINUX

src/CMakeLists.txt

@@ -369,6 +369,7 @@ target_link_libraries(bro
                       ${OPENSSL_LIBRARIES}
                       ${BIND_LIBRARY}
                       ${LibMagic_LIBRARY}
+                      ${ZLIB_LIBRARIES}
 )
 
 install(TARGETS bro DESTINATION bin)