Add dlfcn library for win32

libs/dlfcn-win32/dlfcn.h

@@ -0,0 +1,94 @@
+/*
+ * dlfcn-win32
+ * Copyright (c) 2007 Ramiro Polla
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef DLFCN_H
+#define DLFCN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if defined(DLFCN_WIN32_SHARED)
+#if defined(DLFCN_WIN32_EXPORTS)
+#   define DLFCN_EXPORT __declspec(dllexport)
+#else
+#   define DLFCN_EXPORT __declspec(dllimport)
+#endif
+#else
+#   define DLFCN_EXPORT
+#endif
+
+/* Relocations are performed when the object is loaded. */
+#define RTLD_NOW    0
+
+/* Relocations are performed at an implementation-defined time.
+ * Windows API does not support lazy symbol resolving (when first reference
+ * to a given symbol occurs). So RTLD_LAZY implementation is same as RTLD_NOW.
+ */
+#define RTLD_LAZY   RTLD_NOW
+
+/* All symbols are available for relocation processing of other modules. */
+#define RTLD_GLOBAL (1 << 1)
+
+/* All symbols are not made available for relocation processing by other modules. */
+#define RTLD_LOCAL  (1 << 2)
+
+/* These two were added in The Open Group Base Specifications Issue 6.
+ * Note: All other RTLD_* flags in any dlfcn.h are not standard compliant.
+ */
+
+/* The symbol lookup happens in the normal global scope. */
+#define RTLD_DEFAULT    ((void *)0)
+
+/* Specifies the next object after this one that defines name. */
+#define RTLD_NEXT       ((void *)-1)
+
+/* Structure filled in by dladdr() */
+typedef struct dl_info
+{
+   const char *dli_fname;  /* Filename of defining object (thread unsafe and reused on every call to dladdr) */
+   void       *dli_fbase;  /* Load address of that object */
+   const char *dli_sname;  /* Name of nearest lower symbol */
+   void       *dli_saddr;  /* Exact value of nearest symbol */
+} Dl_info;
+
+/* Open a symbol table handle. */
+DLFCN_EXPORT void *dlopen(const char *file, int mode);
+
+/* Close a symbol table handle. */
+DLFCN_EXPORT int dlclose(void *handle);
+
+/* Get the address of a symbol from a symbol table handle. */
+DLFCN_EXPORT void *dlsym(void *handle, const char *name);
+
+/* Get diagnostic information. */
+DLFCN_EXPORT char *dlerror(void);
+
+/* Translate address to symbolic information (no POSIX standard) */
+DLFCN_EXPORT int dladdr(const void *addr, Dl_info *info);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* DLFCN_H */