https://bugs.kde.org/show_bug.cgi?id=368529
Bug ID: 368529
Summary: Android arm target link error, missing atexit and
pthread_atfork
Product: valgrind
Version: 3.11.0
Platform: Android
OS: other
Status: UNCONFIRMED
Severity: grave
Priority: NOR
Component: general
Assignee: jsew...@acm.org
Reporter: c...@google.com
When creating a statically linked valgrind for Android arm target
and compiled by clang/llvm compiler, the atexit and pthread_atfork
functions are used indirectly but undefined in Android libc.a.
The link failed with undefined message like:
external/jemalloc/src/jemalloc.c:1343: error: undefined reference to
'pthread_atfork'
external/jemalloc/src/jemalloc.c:1279: error: undefined reference to 'atexit'
The following diff should fixed the problem for Android arm target:
diff --git a/coregrind/m_main.c b/coregrind/m_main.c
index 140efbf..634822e 100644
--- a/coregrind/m_main.c
+++ b/coregrind/m_main.c
@@ -3998,6 +3998,15 @@ UWord voucher_mach_msg_set ( UWord arg1 )
#endif
+/*====================================================================*/
+/*=== Dummy atexit and pthread_atfork for Android clang/llvm, arm ===*/
+/*====================================================================*/
+
+#if defined(ANDROID) && defined(__clang__) && defined(__arm__)
+__attribute__((weak)) void atexit() {}
+__attribute__((weak)) void pthread_atfork() {}
+#endif
+
/*--------------------------------------------------------------------*/
/*--- end ---*/
/*--------------------------------------------------------------------*/
Reproducible: Always
Steps to Reproduce:
Build Android's external/valgrind project for aosp_arm-eng target.
Actual Results:
link error:
external/jemalloc/src/jemalloc.c:1343: error: undefined reference to
'pthread_atfork'
external/jemalloc/src/jemalloc.c:1279: error: undefined reference to 'atexit'
Expected Results:
successful link
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