Fix remaining build issues

Author: TheAssassin

src/CMakeLists.txt

@@ -19,7 +19,7 @@ add_library(libzsync2 SHARED
     legacy_http.c
     legacy_progress.c
     zsmake.cpp
-    ${ZSYNC2_SRCS} ${ZSYNC2_HDRS}
+    zsutil.cpp
     format_string.h
     ${PROJECT_BINARY_DIR}/config.h
     ${zsync2_public_headers}

src/zsclient.cpp

@@ -2,9 +2,11 @@
 #include "zsglobal.h"
 
 // system includes
-#include <iostream>
+#include <algorithm>
 #include <deque>
+#include <fstream>
 #include <fcntl.h>
+#include <iostream>
 #include <set>
 #include <sys/stat.h>
 #include <utility>

tests/CMakeLists.txt

@@ -10,6 +10,6 @@ include_directories(../src)
 include_directories(${CPR_INCLUDE_DIRS})
 
 add_executable(test_zsutil test_zsutil.cpp)
-target_link_libraries(test_zsutil gtest ${CPR_LIBRARIES})
+target_link_libraries(test_zsutil PRIVATE libzsync2 gtest cpr)
 
 add_test(NAME test_zsutil COMMAND test_zsutil)