1 files changed, 79 insertions, 0 deletions
diff --git a/gnumake.h b/gnumake.h
new file mode 100644
index 0000000..94d725e
--- /dev/null
+++ b/gnumake.h
@@ -0,0 +1,79 @@
+/* External interfaces usable by dynamic objects loaded into GNU Make.
+   --THIS API IS A "TECHNOLOGY PREVIEW" ONLY.  IT IS NOT A STABLE INTERFACE--
+
+Copyright (C) 2013 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _GNUMAKE_H_
+#define _GNUMAKE_H_
+
+/* Specify the location of elements read from makefiles.  */
+typedef struct
+  {
+    const char *filenm;
+    unsigned long lineno;
+  } gmk_floc;
+
+typedef char *(*gmk_func_ptr)(const char *nm, unsigned int argc, char **argv);
+
+#ifdef _WIN32
+# ifdef GMK_BUILDING_MAKE
+#  define GMK_EXPORT  __declspec(dllexport)
+# else
+#  define GMK_EXPORT  __declspec(dllimport)
+# endif
+#else
+# define GMK_EXPORT
+#endif
+
+/* Free memory returned by the gmk_expand() function.  */
+GMK_EXPORT void gmk_free (char *str);
+
+/* Allocate memory in GNU make's context.  */
+GMK_EXPORT char *gmk_alloc (unsigned int len);
+
+/* Run $(eval ...) on the provided string BUFFER.  */
+GMK_EXPORT void gmk_eval (const char *buffer, const gmk_floc *floc);
+
+/* Run GNU make expansion on the provided string STR.
+   Returns an allocated buffer that the caller must free with gmk_free().  */
+GMK_EXPORT char *gmk_expand (const char *str);
+
+/* Register a new GNU make function NAME (maximum of 255 chars long).
+   When the function is expanded in the makefile, FUNC will be invoked with
+   the appropriate arguments.
+
+   The return value of FUNC must be either NULL, in which case it expands to
+   the empty string, or a pointer to the result of the expansion in a string
+   created by gmk_alloc().  GNU make will free the memory when it's done.
+
+   MIN_ARGS is the minimum number of arguments the function requires.
+   MAX_ARGS is the maximum number of arguments (or 0 if there's no maximum).
+   MIN_ARGS and MAX_ARGS may not exceed 255.
+
+   The FLAGS value may be GMK_FUNC_DEFAULT, or one or more of the following
+   flags OR'd together:
+
+     GMK_FUNC_NOEXPAND: the arguments to the function will be not be expanded
+                        before FUNC is called.
+*/
+GMK_EXPORT void gmk_add_function (const char *name, gmk_func_ptr func,
+                                  unsigned int min_args, unsigned int max_args,
+                                  unsigned int flags);
+
+#define GMK_FUNC_DEFAULT    0x00
+#define GMK_FUNC_NOEXPAND   0x01
+
+#endif  /* _GNUMAKE_H_ */