diff --git a/src/api/baseapi.cpp b/src/api/baseapi.cpp
index 42a1badb98..d90cde72cf 100644
--- a/src/api/baseapi.cpp
+++ b/src/api/baseapi.cpp
@@ -161,11 +161,25 @@ static void addAvailableLanguages(const std::string &datadir, const std::string
   const size_t extlen = sizeof(kTrainedDataSuffix);
 #ifdef _WIN32
   WIN32_FIND_DATA data;
+#if (defined WINAPI_FAMILY) && (WINAPI_FAMILY != WINAPI_FAMILY_DESKTOP_APP) /* windows but not desktop environment */
+  const int strBufferSize = 4096;
+  wchar_t w_string[strBufferSize];
+  MultiByteToWideChar(CP_ACP, 0, (datadir + base2 + "*").c_str(), -1, w_string, strBufferSize);
+  HANDLE handle = FindFirstFile(w_string, &data);
+#else
   HANDLE handle = FindFirstFile((datadir + base2 + "*").c_str(), &data);
+#endif
   if (handle != INVALID_HANDLE_VALUE) {
     BOOL result = TRUE;
     for (; result;) {
+#if (defined WINAPI_FAMILY) && (WINAPI_FAMILY != WINAPI_FAMILY_DESKTOP_APP) /* windows but not desktop environment */
+      char cstr[strBufferSize];
+      size_t charsConverted;
+      wcstombs_s(&charsConverted, cstr, data.cFileName, wcslen(data.cFileName));
+      char *name = cstr;
+#else
       char *name = data.cFileName;
+#endif
       // Skip '.', '..', and hidden files
       if (name[0] != '.') {
         if ((data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == FILE_ATTRIBUTE_DIRECTORY) {
@@ -1032,6 +1046,8 @@ bool TessBaseAPI::ProcessPagesMultipageTiff(const l_uint8 *data, size_t size, co
                                             const char *retry_config, int timeout_millisec,
                                             TessResultRenderer *renderer,
                                             int tessedit_page_number) {
+  return false;
+/*  
   Pix *pix = nullptr;
   int page = (tessedit_page_number >= 0) ? tessedit_page_number : 0;
   size_t offset = 0;
@@ -1065,6 +1081,7 @@ bool TessBaseAPI::ProcessPagesMultipageTiff(const l_uint8 *data, size_t size, co
     }
   }
   return true;
+*/
 }
 
 // Master ProcessPages calls ProcessPagesInternal and then does any post-
diff --git a/src/arch/simddetect.cpp b/src/arch/simddetect.cpp
index 1afe5a5d81..5d999df76b 100644
--- a/src/arch/simddetect.cpp
+++ b/src/arch/simddetect.cpp
@@ -62,6 +62,8 @@
 #  elif defined(HAVE_ELF_AUX_INFO)
 #    include <sys/auxv.h>
 #    include <sys/elf.h>
+#  elif defined(__APPLE__)
+#  else
 #  endif
 #endif
 
@@ -228,6 +230,8 @@ SIMDDetect::SIMDDetect() {
   unsigned long hwcap = 0;
   elf_aux_info(AT_HWCAP, &hwcap, sizeof hwcap);
   neon_available_ = hwcap & HWCAP_NEON;
+#  elif defined(__APPLE__)
+  neon_available_ = false;
 #  endif
 #endif
 
diff --git a/src/ccutil/ccutil.cpp b/src/ccutil/ccutil.cpp
index aad8ef655a..d38cce3dd2 100644
--- a/src/ccutil/ccutil.cpp
+++ b/src/ccutil/ccutil.cpp
@@ -58,7 +58,14 @@ void CCUtil::main_setup(const std::string &argv0, const std::string &basename) {
   } else if (datadir.empty() || _access(datadir.c_str(), 0) != 0) {
     /* Look for tessdata in directory of executable. */
     char path[_MAX_PATH];
+#if (defined WINAPI_FAMILY) && (WINAPI_FAMILY !=  WINAPI_FAMILY_DESKTOP_APP) /* windows but not desktop environment */
+    wchar_t w_string[_MAX_PATH];
+    DWORD length = GetModuleFileName(nullptr, w_string, sizeof(path));
+    size_t charsConverted;
+    wcstombs_s(&charsConverted, path, _MAX_PATH, w_string, _MAX_PATH);
+#else
     DWORD length = GetModuleFileName(nullptr, path, sizeof(path));
+#endif
     if (length > 0 && length < sizeof(path)) {
       char *separator = std::strrchr(path, '\\');
       if (separator != nullptr) {
diff --git a/src/ccutil/scanutils.cpp b/src/ccutil/scanutils.cpp
index c3acd13821..f7be9d3f76 100644
--- a/src/ccutil/scanutils.cpp
+++ b/src/ccutil/scanutils.cpp
@@ -28,6 +28,12 @@
 
 #include "scanutils.h"
 
+// workaround for "'off_t' was not declared in this scope" with -std=c++11
+// OSX has off_t defined, but HAVE_OFF_T is false...
+#if !defined(HAVE_OFF_T) && !__APPLE__ && !defined(__EMSCRIPTEN_major__)
+typedef long off_t;
+#endif  // off_t
+
 enum Flags {
   FL_SPLAT = 0x01, // Drop the value, do not assign
   FL_INV = 0x02,   // Character-set with inverse
@@ -134,7 +140,7 @@ static uintmax_t streamtoumax(FILE *s, int base) {
   }
 
   ungetc(c, s);
-  return minus ? -v : v;
+  return minus ? 0 : v;
 }
 
 static double streamtofloat(FILE *s) {
diff --git a/src/lstm/stridemap.h b/src/lstm/stridemap.h
index 53f00fe47b..5c8a02c079 100644
--- a/src/lstm/stridemap.h
+++ b/src/lstm/stridemap.h
@@ -108,7 +108,7 @@ class StrideMap {
   // Default copy constructor and operator= are OK to use here!
 
   // Sets up the stride for the given array of height, width pairs.
-  void SetStride(const std::vector<std::pair<int, int>> &h_w_pairs);
+  void SetStride(const std::vector< std::pair<int, int> >& h_w_pairs);
   // Scales width and height dimensions by the given factors.
   void ScaleXY(int x_factor, int y_factor);
   // Reduces width to 1, across the batch, whatever the input size.