50 lines
1.8 KiB
Diff
50 lines
1.8 KiB
Diff
From 9e82eb57870ec7c01734b44ed4bb994362004df3 Mon Sep 17 00:00:00 2001
|
|
From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
|
|
Date: Fri, 27 Dec 2019 10:20:53 +0100
|
|
Subject: [PATCH] CMakeLists.txt: check for atomic library
|
|
|
|
On some architectures, atomic binutils are provided by the libatomic
|
|
library from gcc. Linking with libatomic is therefore necessary,
|
|
otherwise the build fails with:
|
|
|
|
[100%] Linking CXX executable leveldbutil
|
|
/home/fabrice/buildroot/output/host/opt/ext-toolchain/bin/../lib/gcc/sparc-buildroot-linux-uclibc/7.4.0/../../../../sparc-buildroot-linux-uclibc/bin/ld: libleveldb.a(env_posix.cc.o): in function `leveldb::(anonymous namespace)::Limiter::Acquire()':
|
|
env_posix.cc:(.text+0x124): undefined reference to `__atomic_fetch_sub_4'
|
|
|
|
This is often for example the case on sparcv8 32 bit.
|
|
|
|
Fixes:
|
|
- http://autobuild.buildroot.org/results/01d5a50581ac9e9b46f40e6f9665f74897db5e6f
|
|
|
|
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
|
|
[Upstream status: https://github.com/google/leveldb/pull/765]
|
|
---
|
|
CMakeLists.txt | 4 ++++
|
|
1 file changed, 4 insertions(+)
|
|
|
|
diff --git a/CMakeLists.txt b/CMakeLists.txt
|
|
index be41ba4..9d6773f 100644
|
|
--- a/CMakeLists.txt
|
|
+++ b/CMakeLists.txt
|
|
@@ -41,6 +41,7 @@ include(CheckIncludeFile)
|
|
check_include_file("unistd.h" HAVE_UNISTD_H)
|
|
|
|
include(CheckLibraryExists)
|
|
+check_library_exists(atomic __atomic_fetch_add_4 "" HAVE_ATOMIC)
|
|
check_library_exists(crc32c crc32c_value "" HAVE_CRC32C)
|
|
check_library_exists(snappy snappy_compress "" HAVE_SNAPPY)
|
|
check_library_exists(tcmalloc malloc "" HAVE_TCMALLOC)
|
|
@@ -270,6 +271,9 @@ if(HAVE_CLANG_THREAD_SAFETY)
|
|
-Werror -Wthread-safety)
|
|
endif(HAVE_CLANG_THREAD_SAFETY)
|
|
|
|
+if(HAVE_ATOMIC)
|
|
+ target_link_libraries(leveldb atomic)
|
|
+endif(HAVE_ATOMIC)
|
|
if(HAVE_CRC32C)
|
|
target_link_libraries(leveldb crc32c)
|
|
endif(HAVE_CRC32C)
|
|
--
|
|
2.24.0
|
|
|