mesa: move _mesa_dlopen(), etc into separate dlopen.c file

1 files changed, 99 insertions, 0 deletions

diff --git a/src/mesa/main/dlopen.c b/src/mesa/main/dlopen.c
new file mode 100644
index 00000000000..becef8173ef
--- /dev/null
+++ b/src/mesa/main/dlopen.c
@@ -0,0 +1,99 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ *
+ * 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
+ * BRIAN PAUL 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.
+ */
+
+
+/**
+ * Wrapper functions for dlopen(), dlsym(), dlclose().
+ * Note that the #ifdef tests for various environments should be expanded.
+ */
+
+
+#include "glheader.h"
+#include "imports.h"
+#include "dlopen.h"
+
+#if defined(_GNU_SOURCE) && !defined(__MINGW32__)
+#include <dlfcn.h>
+#endif
+
+
+/**
+ * Wrapper for dlopen().
+ * Note that 'flags' isn't used at this time.
+ */
+void *
+_mesa_dlopen(const char *libname, int flags)
+{
+#if defined(_GNU_SOURCE)
+   flags = RTLD_LAZY | RTLD_GLOBAL; /* Overriding flags at this time */
+   return dlopen(libname, flags);
+#elif defined(__MINGW32__)
+   return LoadLibrary(libname);
+#else
+   return NULL;
+#endif
+}
+
+
+/**
+ * Wrapper for dlsym() that does a cast to a generic function type,
+ * rather than a void *.  This reduces the number of warnings that are
+ * generated.
+ */
+GenericFunc
+_mesa_dlsym(void *handle, const char *fname)
+{
+#if defined(__DJGPP__)
+   /* need '_' prefix on symbol names */
+   char fname2[1000];
+   fname2[0] = '_';
+   _mesa_strncpy(fname2 + 1, fname, 998);
+   fname2[999] = 0;
+   return (GenericFunc) dlsym(handle, fname2);
+#elif defined(_GNU_SOURCE)
+   return (GenericFunc) dlsym(handle, fname);
+#elif defined(__MINGW32__)
+   return (GenericFunc) GetProcAddress(handle, fname);
+#else
+   return (GenericFunc) NULL;
+#endif
+}
+
+
+/**
+ * Wrapper for dlclose().
+ */
+void
+_mesa_dlclose(void *handle)
+{
+#if defined(_GNU_SOURCE)
+   dlclose(handle);
+#elif defined(__MINGW32__)
+   FreeLibrary(handle);
+#else
+   (void) handle;
+#endif
+}
+
+
+