From 9ae6f5893b4a4e5d60d82b80d4feea1a8db8d5fd Mon Sep 17 00:00:00 2001
From: Jim Harris <james.r.harris@intel.com>
Date: Thu, 24 Sep 2020 00:12:58 +0000
Subject: [PATCH] build: only link rt where needed

Only libraries that are using shm_open require linking
rt when creating the shared library.  Stop including
it on every library and just add it to LOCAL_SYS_LIBS
in the one case where it is used (spdk_trace).

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Ic13128873a76c355b14871a0dea0922488c9cd13
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4370
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
---
 lib/trace/Makefile | 1 +
 mk/spdk.lib.mk     | 4 +---
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/lib/trace/Makefile b/lib/trace/Makefile
index 9102c320a..f9a3efb05 100644
--- a/lib/trace/Makefile
+++ b/lib/trace/Makefile
@@ -39,6 +39,7 @@ SO_MINOR := 0
 
 C_SRCS = trace.c trace_flags.c trace_rpc.c
 LIBNAME = trace
+LOCAL_SYS_LIBS = -lrt
 
 SPDK_MAP_FILE = $(abspath $(CURDIR)/spdk_trace.map)
 
diff --git a/mk/spdk.lib.mk b/mk/spdk.lib.mk
index 926c82bcc..39bf907ff 100644
--- a/mk/spdk.lib.mk
+++ b/mk/spdk.lib.mk
@@ -60,9 +60,7 @@ DEP := $(LIB)
 endif
 
 ifeq ($(OS),FreeBSD)
-LOCAL_SYS_LIBS += -L/usr/local/lib -lrt
-else
-LOCAL_SYS_LIBS += -lrt
+LOCAL_SYS_LIBS += -L/usr/local/lib
 endif
 
 define subdirs_rule