https://github.com/abhina-sree created
https://github.com/llvm/llvm-project/pull/75637
This patch fixes the following build error on z/OS `error: unknown type name
'Dl_info'` by adding a guard to check if we have dladdr.
>From 6b102c50136b8f49b2d678b06fb8f14f866cca70 Mon Sep 17 00:00:00 2001
From: Abhina Sreeskantharajan <abhina.sreeskanthara...@ibm.com>
Date: Fri, 15 Dec 2023 13:13:24 -0500
Subject: [PATCH] check if we have dlfcn.h and dladdr
---
clang/tools/libclang/CIndexer.cpp | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/clang/tools/libclang/CIndexer.cpp
b/clang/tools/libclang/CIndexer.cpp
index 77da2e4fa5ead0..41f8a6f2dac5fb 100644
--- a/clang/tools/libclang/CIndexer.cpp
+++ b/clang/tools/libclang/CIndexer.cpp
@@ -125,13 +125,19 @@ const std::string &CIndexer::getClangResourcesPath() {
#elif defined(_AIX)
getClangResourcesPathImplAIX(LibClangPath);
#else
+ bool pathNotFound = false;
+#if defined(HAVE_DLFCN_H) && defined(HAVE_DLADDR)
Dl_info info;
std::string Path;
// This silly cast below avoids a C++ warning.
if (dladdr((void *)(uintptr_t)clang_createTranslationUnit, &info) != 0) {
// We now have the CIndex directory, locate clang relative to it.
LibClangPath += info.dli_fname;
- } else if (!(Path = llvm::sys::fs::getMainExecutable(nullptr,
nullptr)).empty()) {
+ } else
+ pathNotFound = true;
+#endif
+ if (pathNotFound &&
+ !(Path = llvm::sys::fs::getMainExecutable(nullptr, nullptr)).empty()) {
// If we can't get the path using dladdr, try to get the main executable
// path. This may be needed when we're statically linking libclang with
// musl libc, for example.
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