[PATCH iproute2-next] Makefile: move HAVE_MLN check to top-level Makefile

[PATCH iproute2-next] Makefile: move HAVE_MLN check to top-level Makefile

[Andrea Claudi]

dcb, devlink, rdma, tipc and vdpa rely on libmnl to compile, so they
check for libmnl to be installed on their Makefiles.

This moves HAVE_MNL check from the tools to top-level Makefile, thus
avoiding to call their Makefiles if libmnl is not present.

Signed-off-by: Andrea Claudi <aclaudi@redhat.com>
---
 Makefile         | 5 ++++-
 dcb/Makefile     | 6 ------
 devlink/Makefile | 6 ------
 rdma/Makefile    | 4 ----
 tipc/Makefile    | 6 ------
 vdpa/Makefile    | 6 ------
 6 files changed, 4 insertions(+), 29 deletions(-)

diff --git a/Makefile b/Makefile
index f6214534..8a17d614 100644
--- a/Makefile
+++ b/Makefile
@@ -65,7 +65,10 @@ WFLAGS += -Wmissing-declarations -Wold-style-definition -Wformat=2
 CFLAGS := $(WFLAGS) $(CCOPTS) -I../include -I../include/uapi $(DEFINES) $(CFLAGS)
 YACCFLAGS = -d -t -v
 
-SUBDIRS=lib ip tc bridge misc netem genl tipc devlink rdma dcb man vdpa
+SUBDIRS=lib ip tc bridge misc netem genl man
+ifeq ($(HAVE_MNL),y)
+SUBDIRS += tipc devlink rdma dcb vdpa
+endif
 
 LIBNETLINK=../lib/libutil.a ../lib/libnetlink.a
 LDLIBS += $(LIBNETLINK)
diff --git a/dcb/Makefile b/dcb/Makefile
index 3a2e5d4c..ca65d467 100644
--- a/dcb/Makefile
+++ b/dcb/Makefile
@@ -1,10 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 include ../config.mk
 
-TARGETS :=
-
-ifeq ($(HAVE_MNL),y)
-
 DCBOBJ = dcb.o \
          dcb_app.o \
          dcb_buffer.o \
@@ -15,8 +11,6 @@ DCBOBJ = dcb.o \
 TARGETS += dcb
 LDLIBS += -lm
 
-endif
-
 all: $(TARGETS) $(LIBS)
 
 dcb: $(DCBOBJ) $(LIBNETLINK)
diff --git a/devlink/Makefile b/devlink/Makefile
index d37a4b4d..1a1eed7e 100644
--- a/devlink/Makefile
+++ b/devlink/Makefile
@@ -1,16 +1,10 @@
 # SPDX-License-Identifier: GPL-2.0
 include ../config.mk
 
-TARGETS :=
-
-ifeq ($(HAVE_MNL),y)
-
 DEVLINKOBJ = devlink.o mnlg.o
 TARGETS += devlink
 LDLIBS += -lm
 
-endif
-
 all: $(TARGETS) $(LIBS)
 
 devlink: $(DEVLINKOBJ) $(LIBNETLINK)
diff --git a/rdma/Makefile b/rdma/Makefile
index 9154efeb..37d904a7 100644
--- a/rdma/Makefile
+++ b/rdma/Makefile
@@ -1,16 +1,12 @@
 # SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
 include ../config.mk
 
-TARGETS :=
-
-ifeq ($(HAVE_MNL),y)
 CFLAGS += -I./include/uapi/
 
 RDMA_OBJ = rdma.o utils.o dev.o link.o res.o res-pd.o res-mr.o res-cq.o \
 	   res-cmid.o res-qp.o sys.o stat.o stat-mr.o res-ctx.o res-srq.o
 
 TARGETS += rdma
-endif
 
 all:	$(TARGETS) $(LIBS)
 
diff --git a/tipc/Makefile b/tipc/Makefile
index a10debe0..4f0aba7e 100644
--- a/tipc/Makefile
+++ b/tipc/Makefile
@@ -1,10 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 include ../config.mk
 
-TARGETS :=
-
-ifeq ($(HAVE_MNL),y)
-
 TIPCOBJ=bearer.o \
     cmdl.o link.o \
     media.o misc.o \
@@ -14,8 +10,6 @@ TIPCOBJ=bearer.o \
 
 TARGETS += tipc
 
-endif
-
 all: $(TARGETS) $(LIBS)
 
 tipc: $(TIPCOBJ)
diff --git a/vdpa/Makefile b/vdpa/Makefile
index 253e20a7..86f7221e 100644
--- a/vdpa/Makefile
+++ b/vdpa/Makefile
@@ -1,16 +1,10 @@
 # SPDX-License-Identifier: GPL-2.0
 include ../config.mk
 
-TARGETS :=
-
-ifeq ($(HAVE_MNL),y)
-
 CFLAGS += -I./include/uapi/
 VDPAOBJ = vdpa.o
 TARGETS += vdpa
 
-endif
-
 all: $(TARGETS) $(LIBS)
 
 vdpa: $(VDPAOBJ)
-- 
2.35.1

Re: [PATCH iproute2-next] Makefile: move HAVE_MLN check to top-level Makefile

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to iproute2/iproute2-next.git (main)
by David Ahern <dsahern@kernel.org>:

On Wed,  9 Mar 2022 18:03:26 +0100 you wrote:
> dcb, devlink, rdma, tipc and vdpa rely on libmnl to compile, so they
> check for libmnl to be installed on their Makefiles.
> 
> This moves HAVE_MNL check from the tools to top-level Makefile, thus
> avoiding to call their Makefiles if libmnl is not present.
> 
> Signed-off-by: Andrea Claudi <aclaudi@redhat.com>
> 
> [...]

Here is the summary with links:
  - [iproute2-next] Makefile: move HAVE_MLN check to top-level Makefile
    https://git.kernel.org/pub/scm/network/iproute2/iproute2-next.git/commit/?id=93fb6810e146

You are awesome, thank you!
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