Support for generation of .def files from .spec files.
diff --git a/configure.in b/configure.in
index bfce0f6..93fd9cb 100644
--- a/configure.in
+++ b/configure.in
@@ -652,6 +652,34 @@
[Define if symbols declared in assembly code need an underscore prefix])
fi
+dnl **** Check whether stdcall symbols need to be decorated ****
+
+AC_CACHE_CHECK([whether stdcall symbols need to be decorated],
+ ac_cv_c_stdcall_decoration,
+[saved_libs=$LIBS
+LIBS="conftest_asm.s $LIBS"
+if test "$ac_cv_c_extern_prefix" = "yes"
+then
+cat > conftest_asm.s <<EOF
+ .globl _ac_test@0
+_ac_test@0:
+EOF
+else
+cat > conftest_asm.s <<EOF
+ .globl ac_test@0
+ac_test@0:
+EOF
+fi
+AC_TRY_LINK([extern void __attribute__((__stdcall__)) ac_test(void);],
+ [ac_test(); return 0],
+ ac_cv_c_stdcall_decoration="yes",ac_cv_c_stdcall_decoration="no")
+LIBS=$saved_libs])
+if test "$ac_cv_c_stdcall_decoration" = "yes"
+then
+ AC_DEFINE(NEED_STDCALL_DECORATION, 1,
+ [Define if stdcall symbols need to be decorated])
+fi
+
dnl **** Check for .string in assembler ****
AC_CACHE_CHECK([whether assembler accepts .string],
