diff --git a/dgl/src/Window.cpp b/dgl/src/Window.cpp
index 0ee57f4f..043cee21 100644
--- a/dgl/src/Window.cpp
+++ b/dgl/src/Window.cpp
@@ -26,9 +26,7 @@
 #if defined(DISTRHO_OS_WINDOWS)
 # include "pugl/pugl_win.cpp"
 #elif defined(DISTRHO_OS_MAC)
-extern "C" {
 # include "pugl/pugl_osx.m"
-}
 #elif defined(DISTRHO_OS_LINUX)
 # include <sys/types.h>
 # include <unistd.h>
diff --git a/dgl/src/nanovg/stb_image.c b/dgl/src/nanovg/stb_image.c
index 1ec363b4..d72ee6a4 100644
--- a/dgl/src/nanovg/stb_image.c
+++ b/dgl/src/nanovg/stb_image.c
@@ -2261,13 +2261,13 @@ static void init_defaults(void)
 int stbi_png_partial; // a quick hack to only allow decoding some of a PNG... I should implement real streaming support instead
 static int parse_zlib(zbuf *a, int parse_header)
 {
-   int final, type;
+   int final_, type;
    if (parse_header)
       if (!parse_zlib_header(a)) return 0;
    a->num_bits = 0;
    a->code_buffer = 0;
    do {
-      final = zreceive(a,1);
+      final_ = zreceive(a,1);
       type = zreceive(a,2);
       if (type == 0) {
          if (!parse_uncompressed_block(a)) return 0;
@@ -2286,7 +2286,7 @@ static int parse_zlib(zbuf *a, int parse_header)
       }
       if (stbi_png_partial && a->zout - a->zout_start > 65536)
          break;
-   } while (!final);
+   } while (!final_);
    return 1;
 }
 
@@ -2519,7 +2519,7 @@ static int create_png_image_raw(png *a, uint8 *raw, uint32 raw_len, int out_n, u
 
 static int create_png_image(png *a, uint8 *raw, uint32 raw_len, int out_n, int interlaced)
 {
-   uint8 *final;
+   uint8 *final_;
    int p;
    int save;
    if (!interlaced)
@@ -2528,7 +2528,7 @@ static int create_png_image(png *a, uint8 *raw, uint32 raw_len, int out_n, int i
    stbi_png_partial = 0;
 
    // de-interlacing
-   final = (uint8 *) malloc(a->s->img_x * a->s->img_y * out_n);
+   final_ = (uint8 *) malloc(a->s->img_x * a->s->img_y * out_n);
    for (p=0; p < 7; ++p) {
       int xorig[] = { 0,4,0,2,0,1,0 };
       int yorig[] = { 0,0,4,0,2,0,1 };
@@ -2540,19 +2540,19 @@ static int create_png_image(png *a, uint8 *raw, uint32 raw_len, int out_n, int i
       y = (a->s->img_y - yorig[p] + yspc[p]-1) / yspc[p];
       if (x && y) {
          if (!create_png_image_raw(a, raw, raw_len, out_n, x, y)) {
-            free(final);
+            free(final_);
             return 0;
          }
          for (j=0; j < y; ++j)
             for (i=0; i < x; ++i)
-               memcpy(final + (j*yspc[p]+yorig[p])*a->s->img_x*out_n + (i*xspc[p]+xorig[p])*out_n,
+               memcpy(final_ + (j*yspc[p]+yorig[p])*a->s->img_x*out_n + (i*xspc[p]+xorig[p])*out_n,
                       a->out + (j*x+i)*out_n, out_n);
          free(a->out);
          raw += (x*out_n+1)*y;
          raw_len -= (x*out_n+1)*y;
       }
    }
-   a->out = final;
+   a->out = final_;
 
    stbi_png_partial = save;
    return 1;