Start of a fake msi.dll.

This seems to be the next function WiX expects from its native-code
DLLs. So far it's just a stub.

Makefile.wixfakelibs

@@ -2,7 +2,7 @@
 
 .SUFFIXES: .c .lo .la
 
-all: libwinterop.so.la
+all: libwinterop.so.la libmsi.so.la
 
 %.la:
 	libtool --mode=link gcc -o $@ $^ -rpath /usr/local/lib
@@ -12,6 +12,8 @@ all: libwinterop.so.la
 
 libwinterop.so.la: fake-winterop.lo
 
+libmsi.so.la: fake-msi.lo
+
 clean:
 	rm -rf .libs
 	rm -f *.o *.lo *.la

fake-msi.c

@@ -0,0 +1,15 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdarg.h>
+#include <string.h>
+#include <uchar.h>
+#include <err.h>
+
+uint32_t MsiGetFileVersionW(const char16_t *filename,
+                            char16_t *version, uint32_t *version_size,
+                            char16_t *language, uint32_t *language_size)
+{
+    errx(1, "NYI: MsiGetFileVersion");
+}