From d03f110904682a340137af07264eb8e148e3477d Mon Sep 17 00:00:00 2001
From: Igor Canadi <icanadi@fb.com>
Date: Wed, 10 Jun 2015 12:04:21 -0700
Subject: [PATCH] Link all libraries when building shared libraries

Summary:
The motivation is here: http://stackoverflow.com/questions/30706348/rocksdb-make-error

Apparently there is a bug (?) in g++ where we don't link rt library properly when building RocksDB's shared library. It looks like this works when we add an option -Wl, --no-as-needed.

Test Plan: make shared_lib

Reviewers: meyering, sdong, yhchiang

Reviewed By: yhchiang

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39681
---
 Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index e7e62ca70..8245c0435 100644
--- a/Makefile
+++ b/Makefile
@@ -345,7 +345,8 @@ $(SHARED3): $(SHARED4)
 endif
 
 $(SHARED4):
-	$(CXX) $(PLATFORM_SHARED_LDFLAGS)$(SHARED3) $(CXXFLAGS) $(PLATFORM_SHARED_CFLAGS) $(LIB_SOURCES) $(LDFLAGS) -o $@
+	$(CXX) $(PLATFORM_SHARED_LDFLAGS)$(SHARED3) $(CXXFLAGS) $(PLATFORM_SHARED_CFLAGS) $(LIB_SOURCES) \
+		-Wl,--no-as-needed $(LDFLAGS) -o $@
 
 endif  # PLATFORM_SHARED_EXT