[compiler-rt] f7c4d79 - [compiler-rt] Define ElfW() macro if it's not defined

[Sergej Jaskiewicz via llvm-commits]

Author: Sergej Jaskiewicz
Date: 2020-03-10T18:54:28+03:00
New Revision: f7c4d796ba67dba27361d07a77eefde05d2e0c9c

URL: https://github.com/llvm/llvm-project/commit/f7c4d796ba67dba27361d07a77eefde05d2e0c9c
DIFF: https://github.com/llvm/llvm-project/commit/f7c4d796ba67dba27361d07a77eefde05d2e0c9c.diff

LOG: [compiler-rt] Define ElfW() macro if it's not defined

Summary:
The `ElfW()` macro is not provided by `<link.h>` on some
systems (e.g., FreeBSD). On these systems the data structures are
just called `Elf_XXX`. Define `ElfW()` locally.

(This fix is taken from [libunwind](https://github.com/llvm/llvm-project/blob/9b05596eff21388ae6f17cdea8df0538dc630441/libunwind/src/AddressSpace.hpp#L144-L157).)

Reviewers: compnerd

Differential revision: https://reviews.llvm.org/D75907

Added: 
    

Modified: 
    compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp

Removed: 
    


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diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp
index edbe8402808a..4d17c9686e4e 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp
@@ -35,6 +35,10 @@
 #include <sys/resource.h>
 #include <syslog.h>
 
+#if !defined(ElfW)
+#define ElfW(type) Elf_##type
+#endif
+
 #if SANITIZER_FREEBSD
 #include <pthread_np.h>
 #include <osreldate.h>