diff --git a/libs/EXTERNAL/libezgl/include/ezgl/graphics.hpp b/libs/EXTERNAL/libezgl/include/ezgl/graphics.hpp
index 7b7250baa5c..1c8898ba056 100644
--- a/libs/EXTERNAL/libezgl/include/ezgl/graphics.hpp
+++ b/libs/EXTERNAL/libezgl/include/ezgl/graphics.hpp
@@ -39,6 +39,9 @@
 #include <functional>
 #include <string>
 #include <vector>
+#ifdef _WIN32
+#define _USE_MATH_DEFINES // ensure (non-standard) value of M_PI is brought in from math.h
+#endif
 #include <cfloat>
 #include <cmath>
 #include <algorithm>
diff --git a/libs/libvtrutil/src/vtr_util.cpp b/libs/libvtrutil/src/vtr_util.cpp
index eca51b05e90..4b1a1e7be82 100644
--- a/libs/libvtrutil/src/vtr_util.cpp
+++ b/libs/libvtrutil/src/vtr_util.cpp
@@ -375,67 +375,6 @@ char* fgets(char* buf, int max_size, FILE* fp) {
     return nullptr;
 }
 
-/**
- * @brief to get an arbitrary long input line and cut off any
- * comment part 
- * 
- * the getline function is exaly like the __get_delim function 
- * in GNU with '\n' delimiter. As a result, to make the function 
- * behaviour identical for Windows (\r\n) and Linux (\n) compiler 
- * macros for checking operating systems have been used.
- * 
- * @note user need to take care of the given pointer,
- * which will be dynamically allocated by getdelim
- */
-char* getline(char*& _lineptr, FILE* _stream) {
-    int i;
-    int ch;
-    size_t _n = 0;
-    ssize_t nread;
-
-#if defined(__unix__)
-    nread = getdelim(&_lineptr, &_n, '\n', _stream);
-#elif defined(_WIN32)
-#define __WIN_NLTK "\r\n"
-    nread = getdelim(&_lineptr, &_n, __WIN_NLTK, _stream);
-#endif
-
-    if (nread == -1) {
-        int errsv = errno;
-        std::string error_msg;
-
-        if (errsv == EINVAL)
-            error_msg = string_fmt("[%s] Bad arguments (_lineptr is NULL, or _stream is not valid).", strerror(errsv));
-        else if (errsv == ENOMEM)
-            error_msg = string_fmt("[%s] Allocation or reallocation of the line buffer failed.", strerror(errsv));
-        else
-            /* end of file so it will return null */
-            return nullptr;
-
-        /* getline was unsuccessful, so error */
-        throw VtrError(string_fmt("Error -- %s\n",
-                                  error_msg.c_str()),
-                       __FILE__, __LINE__);
-        return nullptr;
-    }
-
-    cont = 0;           /* line continued? */
-    file_line_number++; /* global variable */
-
-    for (i = 0; i < nread; i++) { /* Keep going until the line finishes */
-
-        ch = _lineptr[i];
-
-        if (ch == '#') { /* comment */
-            _lineptr[i] = '\0';
-            /* skip the rest of the line */
-            break;
-        }
-    }
-
-    return (_lineptr);
-}
-
 ///@brief Returns line number of last opened and read file
 int get_file_line_number_of_last_opened_file() {
     return file_line_number;
diff --git a/vpr/src/draw/draw_basic.cpp b/vpr/src/draw/draw_basic.cpp
index 04eed08fcbd..58321714826 100644
--- a/vpr/src/draw/draw_basic.cpp
+++ b/vpr/src/draw/draw_basic.cpp
@@ -4,6 +4,9 @@
 #ifndef NO_GRAPHICS
 
 #include <cstdio>
+#ifdef _WIN32
+#define _USE_MATH_DEFINES // ensure (non-standard) value of M_PI is brought in from math.h
+#endif
 #include <cmath>
 #include <algorithm>
 #include <sstream>