preproc: add support for builtin include modules (%use)

Add a builtin equivalent to the %include directive called %use.
%use includes a standard macro file compiled into the binary; these
come from the macros/ directory in the source code.

The idea here is to be able to provide optional macro packages with
the distribution, without adding complex host filesystem dependencies.

1 files changed, 2 insertions, 1 deletions

diff --git a/tables.h b/tables.h
index 0ac0ae6..f4d9a77 100644
--- a/tables.h
+++ b/tables.h
@@ -15,7 +15,8 @@
 
 /* macros.c */
 extern const char * const nasm_stdmac[];
-extern const char * const * nasm_stdmac_after_tasm;
+extern const char * const * const nasm_stdmac_after_tasm;
+const char * const *nasm_stdmac_find_module(const char *);
 
 /* --- From insns.dat via insns.pl: --- */