[Qemu-stable] [Qemu-devel] [PATCH 3/3] contrib/rdmacm-mux: fix clang compilation

[Marcel Apfelbaum]

Fix Commit a5d2f6f877 (contrib/rdmacm-mux: Add implementation
                       of RDMA User MAD multiplexer).

The above commit introduces a new contrib target, adding a global dependency
to libumad library in case pvrdma configuration option is enabled.
Clang forbids it:
    clang-6.0: error: -libumad: 'linker' input unused
              [-Werror,-Wunused-command-line-argument]

Fix by limiting the scope to the rdmacm-mux target itself.

Reported-by: Cornelia Huck <address@hidden>
Signed-off-by: Marcel Apfelbaum <address@hidden>
---
 Makefile                         | 2 ++
 contrib/rdmacm-mux/Makefile.objs | 1 -
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index a9ac16d94e..31e87e0c2d 100644
--- a/Makefile
+++ b/Makefile
@@ -580,6 +580,8 @@ vhost-user-scsi$(EXESUF): $(vhost-user-scsi-obj-y) 
libvhost-user.a
        $(call LINK, $^)
 vhost-user-blk$(EXESUF): $(vhost-user-blk-obj-y) libvhost-user.a
        $(call LINK, $^)
+
+rdmacm-mux$(EXESUF): LIBS += "-libumad"
 rdmacm-mux$(EXESUF): $(rdmacm-mux-obj-y) $(COMMON_LDADDS)
        $(call LINK, $^)
 
diff --git a/contrib/rdmacm-mux/Makefile.objs b/contrib/rdmacm-mux/Makefile.objs
index e1ff4fe569..3df744af89 100644
--- a/contrib/rdmacm-mux/Makefile.objs
+++ b/contrib/rdmacm-mux/Makefile.objs
@@ -1,4 +1,3 @@
 ifdef CONFIG_PVRDMA
-CFLAGS += -libumad
 rdmacm-mux-obj-y = main.o
 endif
-- 
2.17.1