enable compiling wide char with MINGW

compile_min.sh

@@ -56,14 +56,14 @@ if test "$1" = "32"; then
   echo "configuring for 32 bit"
   echo
 # You may add  --enable-adms to the following command for adding adms generated devices 
-  ../configure --with-wingui --enable-xspice --enable-cider --enable-openmp --disable-debug --disable-utf8 prefix="C:/Spice" CFLAGS="-m32 -O2" LDFLAGS="-m32 -s"
+  ../configure --with-wingui --enable-xspice --enable-cider --enable-openmp --disable-debug prefix="C:/Spice" CFLAGS="-m32 -O2" LDFLAGS="-m32 -s"
 else
    cd release
    if [ $? -ne 0 ]; then  echo "cd release failed"; exit 1 ; fi
   echo "configuring for 64 bit"
   echo
 # You may add  --enable-adms to the following command for adding adms generated devices 
-  ../configure --with-wingui --enable-xspice --enable-cider --enable-openmp --disable-debug --disable-utf8 prefix="C:/Spice64" CFLAGS="-m64 -O2" LDFLAGS="-m64 -s"
+  ../configure --with-wingui --enable-xspice --enable-cider --enable-openmp --disable-debug prefix="C:/Spice64" CFLAGS="-m64 -O2" LDFLAGS="-m64 -s"
 fi
 if [ $? -ne 0 ]; then  echo "../configure failed"; exit 1 ; fi
 

src/Makefile.am

@@ -111,6 +111,7 @@ ngspice_SOURCES = \
 ngspice_CPPFLAGS = $(AM_CPPFLAGS) -DSIMULATOR
 
 if WINGUI
+ngspice_LDFLAGS = -municode $(AM_LDFLAGS)
 ngspice_SOURCES += winmain.c hist_info.c
 endif
 

src/winmain.c

@@ -31,8 +31,8 @@
 #include <ctype.h>
 #include <sys/types.h>
 #include <sys/timeb.h>
-#ifndef _MSC_VER
-#include <wchar.h>
+#ifdef __MINGW32__
+#include <tchar.h>
 #include <stdio.h>
 #endif
 
@@ -970,7 +970,7 @@ MakeArgcArgv(char *cmdline, int *argc, char ***argv)
 int WINAPI
 WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPSTR lpszCmdLine, _In_ int nCmdShow)
 #else
-#ifdef _MSC_VER
+#if defined(_MSC_VER) || defined(__MINGW32__)
 int WINAPI
 wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPWSTR wlpszCmdLine, _In_ int nCmdShow)
 #else
@@ -998,7 +998,7 @@ WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPSTR n
 
 #ifndef EXT_ASC
     /* convert wchar to utf-8 */
-#ifdef _MSC_VER
+#if defined(_MSC_VER) || defined(__MINGW32__)
     char lpszCmdLine[1024];
     WideCharToMultiByte(CP_UTF8, 0, wlpszCmdLine, -1, lpszCmdLine, 1023, NULL, FALSE);
 #else