https://github.com/hawkinsw updated
https://github.com/llvm/llvm-project/pull/104831
>From 93949029c808e2e5991df2f3c498dcd008367c34 Mon Sep 17 00:00:00 2001
From: Will Hawkins <hawki...@obs.cr>
Date: Mon, 19 Aug 2024 14:43:45 -0400
Subject: [PATCH] [lldb][test] Workaround older systems that lack gettid
Older glibc versions do not have `gettid`. Provide our own `gettid` in these
cases.
Fixes a build failure caused by #104109.
---
lldb/unittests/Process/elf-core/CMakeLists.txt | 11 +++++++++++
lldb/unittests/Process/elf-core/ThreadElfCoreTest.cpp | 5 +++++
2 files changed, 16 insertions(+)
diff --git a/lldb/unittests/Process/elf-core/CMakeLists.txt
b/lldb/unittests/Process/elf-core/CMakeLists.txt
index b852a3ffb863c1..68ab6e0683c182 100644
--- a/lldb/unittests/Process/elf-core/CMakeLists.txt
+++ b/lldb/unittests/Process/elf-core/CMakeLists.txt
@@ -1,3 +1,6 @@
+include(CheckSymbolExists)
+include(CMakePushCheckState)
+
add_lldb_unittest(ProcessElfCoreTests
ThreadElfCoreTest.cpp
@@ -13,3 +16,11 @@ add_lldb_unittest(ProcessElfCoreTests
LINK_COMPONENTS
Support
)
+
+cmake_push_check_state()
+set(CMAKE_REQUIRED_DEFINITIONS -D_GNU_SOURCE)
+check_symbol_exists(gettid "unistd.h" HAVE_GETTID)
+if(HAVE_GETTID)
+ target_compile_definitions(ProcessElfCoreTests PRIVATE HAVE_GETTID)
+endif()
+cmake_pop_check_state()
diff --git a/lldb/unittests/Process/elf-core/ThreadElfCoreTest.cpp
b/lldb/unittests/Process/elf-core/ThreadElfCoreTest.cpp
index ce146f62b0d826..c9879f5d94d538 100644
--- a/lldb/unittests/Process/elf-core/ThreadElfCoreTest.cpp
+++ b/lldb/unittests/Process/elf-core/ThreadElfCoreTest.cpp
@@ -23,6 +23,11 @@
#include <mutex>
#include <unistd.h>
+#ifndef HAVE_GETTID
+#include <sys/syscall.h>
+pid_t gettid() { return ((pid_t)syscall(SYS_gettid)); }
+#endif
+
using namespace lldb_private;
namespace {
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