Add native windows (x64) support

Co-Authored-By: xybp888 <[email protected]>

configure.ac

@@ -11,10 +11,25 @@ AC_PROG_LIBTOOL
 CFLAGS+=" -std=c11"
 AC_PROG_INSTALL
 
-# Versioning
+# Versioning.
 CFLAGS+=" -D IMG4TOOL_VERSION_COUNT=\\\"$(git rev-list --count HEAD | tr -d '\n')\\\""
 CFLAGS+=" -D IMG4TOOL_VERSION_SHA=\\\"$(git rev-parse HEAD | tr -d '\n')\\\""
 
+# Checks the platform.
+AC_MSG_CHECKING([whether to enable WIN32 specific flags])
+case "$host_os" in
+*mingw*)
+        win32=true
+        AC_MSG_RESULT([yes])
+	AC_CHECK_TOOL(WINDRES, windres)
+  ;;
+*)
+        win32=false
+        AC_MSG_RESULT([no])
+  ;;
+esac
+AM_CONDITIONAL(WIN32, test x$win32 = xtrue)
+
 # Checks for libraries.
 AC_ARG_WITH([openssl],
             [AS_HELP_STRING([--without-openssl],

img4tool/Makefile.am

@@ -16,5 +16,10 @@ AM_LDFLAGS += $(libplist_LIBS) $(libplistmm_LDFLAGS)
 bin_PROGRAMS = img4tool
 img4tool_CFLAGS = $(AM_CFLAGS)
 img4tool_LDADD = $(AM_LDFLAGS)
+
+if WIN32
+img4tool_LDFLAGS = -all-static -static-libgcc -static-libstdc++ $(AM_LDFLAGS)
+endif
+
 img4tool_SOURCES = img4tool.c img4.c lzssdec.c
 endif