--- a/src/BasicLayout.cpp
+++ b/src/BasicLayout.cpp
@@ -17,6 +17,8 @@
 #include <sstream>
 #endif
 
+#include <memory>
+
 namespace log4cpp {
 
     BasicLayout::BasicLayout() {
--- a/src/PatternLayout.cpp
+++ b/src/PatternLayout.cpp
@@ -373,7 +373,7 @@
                         literal = "";
                     }
                     if ((minWidth != 0) || (maxWidth != 0)) {
-                        component = new FormatModifierComponent(component, std::abs(minWidth), maxWidth, minWidth < 0);
+                        component = new FormatModifierComponent(component, std::abs((float)minWidth), maxWidth, minWidth < 0);
                         minWidth = maxWidth = 0;
                     }
                     _components.push_back(component);
--- a/tests/testDailyRollingFileAppender.cpp
+++ b/tests/testDailyRollingFileAppender.cpp
@@ -40,7 +40,7 @@
 #else 
 #define PATHDELIMITER "\\"
 #endif
-const char* const nesteddirname = "nesteddir"PATHDELIMITER;
+const char* const nesteddirname = "nesteddir" PATHDELIMITER;
 
 
 class DailyRollingTest {