diff --git a/CMakeLists.txt b/CMakeLists.txt
index c2cd2c0ef..cb4a0febd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -156,7 +156,7 @@ if(LOG4CXX_QT_SUPPORT)
     )
 endif(LOG4CXX_QT_SUPPORT)
 
-IF(WIN32 AND BUILD_SHARED_LIBS AND LOG4CXX_INSTALL_PDB)
+IF(MSVC AND BUILD_SHARED_LIBS AND LOG4CXX_INSTALL_PDB)
   INSTALL(FILES $<TARGET_PDB_FILE:log4cxx>
           DESTINATION ${CMAKE_INSTALL_BINDIR}
           CONFIGURATIONS RelWithDebInfo Debug
diff --git a/src/examples/cpp/com/foo/config3.cpp b/src/examples/cpp/com/foo/config3.cpp
index 349740517..c980248f8 100644
--- a/src/examples/cpp/com/foo/config3.cpp
+++ b/src/examples/cpp/com/foo/config3.cpp
@@ -28,8 +28,10 @@
 #include <Windows.h>
 #elif __APPLE__
 #include <mach-o/dyld.h>
+#elif (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE >= 500) || (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L)
+#include <unistd.h> // getpid
 #else
-#include <unistd.h>     /* getpid */
+#include <cstring> // strncpy
 #endif
 
 
@@ -51,12 +53,14 @@ auto DefaultConfigurationFileNames(std::string& altPrefix) -> std::vector<std::s
 	pathSepar = '\\';
 #elif defined(__APPLE__)
 	_NSGetExecutablePath(buf, &bufCount);
-#else
+#elif (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE >= 500) || (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L)
 	std::ostringstream exeLink;
 	exeLink << "/proc/" << getpid() << "/exe";
 	bufCount = readlink(exeLink.str().c_str(), buf, bufSize);
 	if (0 < bufCount)
 		buf[bufCount] = 0;
+#else
+	strncpy(buf, "auto-configured", bufSize);
 #endif
 	std::string programFileName(buf);
 	auto slashIndex = programFileName.rfind(pathSepar);
diff --git a/src/main/resources/CMakeLists.txt b/src/main/resources/CMakeLists.txt
index ce653e553..dfcc89dd3 100644
--- a/src/main/resources/CMakeLists.txt
+++ b/src/main/resources/CMakeLists.txt
@@ -16,7 +16,7 @@
 #
 
 # Configure
-if(WIN32)
+if(MSVC)
 target_sources(log4cxx
   PRIVATE
   ../resources/log4cxx.rc