diff --git a/src/file_find.cc b/src/file_find.cc
index 517c340..59c3f13 100644
--- a/src/file_find.cc
+++ b/src/file_find.cc
@@ -1,14 +1,16 @@
 #include "file_find.h"
 
+#include <stddef.h>
+
 // 0x4E6380
 bool fileFindFirst(const char* path, DirectoryFileFindData* findData)
 {
-#if defined(_MSC_VER)
+#if defined(_WIN32)
     findData->hFind = FindFirstFileA(path, &(findData->ffd));
     if (findData->hFind == INVALID_HANDLE_VALUE) {
         return false;
     }
-#elif defined(__WATCOMC__)
+#else
     findData->dir = opendir(path);
     if (findData->dir == NULL) {
         return false;
@@ -19,8 +21,6 @@ bool fileFindFirst(const char* path, DirectoryFileFindData* findData)
         closedir(findData->dir);
         return false;
     }
-#else
-#error Not implemented
 #endif
 
     return true;
@@ -29,18 +29,16 @@ bool fileFindFirst(const char* path, DirectoryFileFindData* findData)
 // 0x4E63A8
 bool fileFindNext(DirectoryFileFindData* findData)
 {
-#if defined(_MSC_VER)
+#if defined(_WIN32)
     if (!FindNextFileA(findData->hFind, &(findData->ffd))) {
         return false;
     }
-#elif defined(__WATCOMC__)
+#else
     findData->entry = readdir(findData->dir);
     if (findData->entry == NULL) {
         closedir(findData->dir);
         return false;
     }
-#else
-#error Not implemented
 #endif
 
     return true;
@@ -51,12 +49,10 @@ bool findFindClose(DirectoryFileFindData* findData)
 {
 #if defined(_MSC_VER)
     FindClose(findData->hFind);
-#elif defined(__WATCOMC__)
+#else
     if (closedir(findData->dir) != 0) {
         return false;
     }
-#else
-#error Not implemented
 #endif
 
     return true;
diff --git a/src/file_find.h b/src/file_find.h
index 0dbb552..90e497e 100644
--- a/src/file_find.h
+++ b/src/file_find.h
@@ -1,8 +1,12 @@
 #ifndef FILE_FIND_H
 #define FILE_FIND_H
 
+#if defined(_WIN32)
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
+#else
+#include <dirent.h>
+#endif
 
 // NOTE: This structure is significantly different from what was in the
 // original code. Watcom provides opendir/readdir/closedir implementations,
@@ -24,14 +28,12 @@
 // original implementation for Watcom (not tested). I'm not sure it will work
 // in other compilers, so for now just stick with the error.
 typedef struct DirectoryFileFindData {
-#if defined(_MSC_VER)
+#if defined(_WIN32)
     HANDLE hFind;
     WIN32_FIND_DATAA ffd;
-#elif defined(__WATCOMC__)
+#else
     DIR* dir;
     struct dirent* entry;
-#else
-#error Not implemented
 #endif
 } DirectoryFileFindData;
 
@@ -39,4 +41,24 @@ bool fileFindFirst(const char* path, DirectoryFileFindData* findData);
 bool fileFindNext(DirectoryFileFindData* findData);
 bool findFindClose(DirectoryFileFindData* findData);
 
+static inline bool fileFindIsDirectory(DirectoryFileFindData* findData)
+{
+#if defined(_WIN32)
+    return (findData->ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
+#elif defined(__WATCOMC__)
+    return (findData->entry->d_attr & _A_SUBDIR) != 0;
+#else
+    return findData->entry->d_type == DT_DIR;
+#endif
+}
+
+static inline char* fileFindGetName(DirectoryFileFindData* findData)
+{
+#if defined(_WIN32)
+    return findData->ffd.cFileName;
+#else
+    return findData->entry->d_name;
+#endif
+}
+
 #endif /* FILE_FIND_H */
diff --git a/src/xfile.cc b/src/xfile.cc
index e4dd5c3..ed667ae 100644
--- a/src/xfile.cc
+++ b/src/xfile.cc
@@ -549,18 +549,8 @@ bool xlistEnumerate(const char* pattern, XListEnumerationHandler* handler, XList
     if (drive[0] != '\0' || dir[0] == '\\' || dir[0] == '/' || dir[0] == '.') {
         if (fileFindFirst(pattern, &directoryFileFindData)) {
             do {
-                bool isDirectory;
-                char* entryName;
-
-#if defined(_MSC_VER)
-                isDirectory = (directoryFileFindData.ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
-                entryName = directoryFileFindData.ffd.cFileName;
-#elif defined(__WATCOMC__)
-                isDirectory = (directoryFileFindData.entry->d_attr & _A_SUBDIR) != 0;
-                entryName = directoryFileFindData.entry->d_name;
-#else
-#error Not implemented
-#endif
+                bool isDirectory = fileFindIsDirectory(&directoryFileFindData);
+                char* entryName = fileFindGetName(&directoryFileFindData);
 
                 if (isDirectory) {
                     if (strcmp(entryName, "..") == 0 || strcmp(entryName, ".") == 0) {
@@ -604,18 +594,8 @@ bool xlistEnumerate(const char* pattern, XListEnumerationHandler* handler, XList
 
             if (fileFindFirst(path, &directoryFileFindData)) {
                 do {
-                    bool isDirectory;
-                    char* entryName;
-
-#if defined(_MSC_VER)
-                    isDirectory = (directoryFileFindData.ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
-                    entryName = directoryFileFindData.ffd.cFileName;
-#elif defined(__WATCOMC__)
-                    isDirectory = (directoryFileFindData.entry->d_attr & _A_SUBDIR) != 0;
-                    entryName = directoryFileFindData.entry->d_name;
-#else
-#error Not implemented
-#endif
+                    bool isDirectory = fileFindIsDirectory(&directoryFileFindData);
+                    char* entryName = fileFindGetName(&directoryFileFindData);
 
                     if (isDirectory) {
                         if (strcmp(entryName, "..") == 0 || strcmp(entryName, ".") == 0) {
@@ -642,18 +622,8 @@ bool xlistEnumerate(const char* pattern, XListEnumerationHandler* handler, XList
     _splitpath(pattern, drive, dir, fileName, extension);
     if (fileFindFirst(pattern, &directoryFileFindData)) {
         do {
-            bool isDirectory;
-            char* entryName;
-
-#if defined(_MSC_VER)
-            isDirectory = (directoryFileFindData.ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
-            entryName = directoryFileFindData.ffd.cFileName;
-#elif defined(__WATCOMC__)
-            isDirectory = (directoryFileFindData.entry->d_attr & _A_SUBDIR) != 0;
-            entryName = directoryFileFindData.entry->d_name;
-#else
-#error Not implemented
-#endif
+            bool isDirectory = fileFindIsDirectory(&directoryFileFindData);
+            char* entryName = fileFindGetName(&directoryFileFindData);
 
             if (isDirectory) {
                 if (strcmp(entryName, "..") == 0 || strcmp(entryName, ".") == 0) {
diff --git a/third_party/fpattern/CMakeLists.txt b/third_party/fpattern/CMakeLists.txt
index 43f4153..d809812 100644
--- a/third_party/fpattern/CMakeLists.txt
+++ b/third_party/fpattern/CMakeLists.txt
@@ -20,5 +20,11 @@ add_library(fpattern STATIC
     "${fpattern_SOURCE_DIR}/fpattern.h"
 )
 
+if(APPLE)
+    target_compile_definitions(fpattern PRIVATE
+        "-Dunix"
+    )
+endif()
+
 set(FPATTERN_LIBRARY "fpattern" PARENT_SCOPE)
 set(FPATTERN_INCLUDE_DIR "${fpattern_SOURCE_DIR}" PARENT_SCOPE)