[PATCH] D48733: Introduce a separate preprocessor macro, _LIBUNWIND_USE_DLADDR, for directly controlling a dependency on dladdr(). This will allow us to use libunwind without adding a libdl dependency.

[Jordan Rupprecht via Phabricator via cfe-commits]

rupprecht created this revision.
rupprecht added a reviewer: saugustine.
Herald added subscribers: cfe-commits, chrib, christof.

Repository:
  rUNW libunwind

https://reviews.llvm.org/D48733

Files:
  src/AddressSpace.hpp


Index: src/AddressSpace.hpp
===================================================================
--- src/AddressSpace.hpp
+++ src/AddressSpace.hpp
@@ -18,7 +18,15 @@
 #include <stdlib.h>
 #include <string.h>
 
-#if !defined(_LIBUNWIND_IS_BAREMETAL) && !defined(_WIN32)
+#ifndef _LIBUNWIND_USE_DLADDR
+  #if !defined(_LIBUNWIND_IS_BAREMETAL) && !defined(_WIN32)
+    #define _LIBUNWIND_USE_DLADDR 1
+  #else
+    #define _LIBUNWIND_USE_DLADDR 0
+  #endif
+#endif
+
+#if _LIBUNWIND_USE_DLADDR
 #include <dlfcn.h>
 #endif
 
@@ -576,7 +584,7 @@
 inline bool LocalAddressSpace::findFunctionName(pint_t addr, char *buf,
                                                 size_t bufLen,
                                                 unw_word_t *offset) {
-#if !defined(_LIBUNWIND_IS_BAREMETAL) && !defined(_WIN32)
+#if _LIBUNWIND_USE_DLADDR
   Dl_info dyldInfo;
   if (dladdr((void *)addr, &dyldInfo)) {
     if (dyldInfo.dli_sname != NULL) {


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