Replace macro MINGW by __MINGW32__

MINGW is no longer used and now removed from configure.ac.

Signed-off-by: Stefan Weil <sw@weilnetz.de>

configure.ac

@@ -68,7 +68,6 @@ AC_CONFIG_HEADERS([config_auto.h:config/config.h.in])
 
 # default conditional
 AM_CONDITIONAL([T_WIN], false)
-AM_CONDITIONAL([MINGW], false)
 AM_CONDITIONAL([OSX], false)
 AM_CONDITIONAL([GRAPHICS_DISABLED], false)
 AC_SUBST([AM_CPPFLAGS])
@@ -83,9 +82,7 @@ OPENCL_LIBS="-lOpenCL"
 AC_CANONICAL_HOST
 case "${host_os}" in
     mingw*)
-        AC_DEFINE_UNQUOTED([MINGW], 1, [This is a MinGW system])
         AM_CONDITIONAL([T_WIN], true)
-        AM_CONDITIONAL([MINGW], true)
         AM_CONDITIONAL([ADD_RT], false)
         AC_SUBST([AM_LDFLAGS], ['-Wl,-no-undefined -Wl,--as-needed'])
         ;;

src/api/baseapi.cpp

@@ -28,10 +28,10 @@
 #endif
 
 #if defined(_WIN32)
-#if defined(MINGW)
+#if defined(__MINGW32__)
 // workaround for stdlib.h with -std=c++11 for _splitpath and _MAX_FNAME
 #undef __STRICT_ANSI__
-#endif  // MINGW
+#endif  // __MINGW32__
 #include <fcntl.h>
 #include <io.h>
 #else

src/ccstruct/pdblock.cpp

@@ -198,7 +198,7 @@ void PDBLK::plot(                //draw outline
     //              tprintf("Block %d bottom left is (%d,%d)\n",
     //                      serial,startpt.x(),startpt.y());
     char temp_buff[34];
-#if !defined(_WIN32) || defined(MINGW)
+#if !defined(_WIN32) || defined(__MINGW32__)
     snprintf(temp_buff, sizeof(temp_buff), "%" PRId32, serial);
 #else
     ultoa (serial, temp_buff, 10);

src/ccstruct/polyblk.cpp

@@ -250,7 +250,7 @@ void POLY_BLOCK::plot(ScrollView* window, int32_t num) {
   if (num > 0) {
     window->TextAttributes("Times", 80, false, false, false);
     char temp_buff[34];
-#if !defined(_WIN32) || defined(MINGW)
+#if !defined(_WIN32) || defined(__MINGW32__)
     snprintf(temp_buff, sizeof(temp_buff), "%" PRId32, num);
 #else
     ltoa (num, temp_buff, 10);