[dpdk-dev] [PATCH 1/2] examples: fix pkg-config detection with older make

Bruce Richardson bruce.richardson at intel.com
Wed Jul 3 18:40:00 CEST 2019 

Make versions before 4.2 did not have support for the .SHELLSTATUS
variable, so use another method to detect shell success.

Fixes: 22119c4591a0 ("examples: use pkg-config in makefiles")
Cc: stable at dpdk.org

Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
---
 examples/bbdev_app/Makefile             | 3 +--
 examples/bond/Makefile                  | 3 +--
 examples/cmdline/Makefile               | 3 +--
 examples/distributor/Makefile           | 3 +--
 examples/eventdev_pipeline/Makefile     | 3 +--
 examples/exception_path/Makefile        | 3 +--
 examples/fips_validation/Makefile       | 3 +--
 examples/flow_classify/Makefile         | 3 +--
 examples/flow_filtering/Makefile        | 3 +--
 examples/helloworld/Makefile            | 3 +--
 examples/ip_fragmentation/Makefile      | 3 +--
 examples/ip_pipeline/Makefile           | 3 +--
 examples/ip_reassembly/Makefile         | 3 +--
 examples/ipsec-secgw/Makefile           | 3 +--
 examples/ipv4_multicast/Makefile        | 3 +--
 examples/kni/Makefile                   | 3 +--
 examples/l2fwd-cat/Makefile             | 3 +--
 examples/l2fwd-crypto/Makefile          | 3 +--
 examples/l2fwd-jobstats/Makefile        | 3 +--
 examples/l2fwd-keepalive/Makefile       | 3 +--
 examples/l2fwd/Makefile                 | 3 +--
 examples/l3fwd-acl/Makefile             | 3 +--
 examples/l3fwd-power/Makefile           | 3 +--
 examples/l3fwd-vf/Makefile              | 3 +--
 examples/l3fwd/Makefile                 | 3 +--
 examples/link_status_interrupt/Makefile | 3 +--
 examples/load_balancer/Makefile         | 3 +--
 examples/packet_ordering/Makefile       | 3 +--
 examples/ptpclient/Makefile             | 3 +--
 examples/qos_meter/Makefile             | 3 +--
 examples/qos_sched/Makefile             | 3 +--
 examples/rxtx_callbacks/Makefile        | 3 +--
 examples/service_cores/Makefile         | 3 +--
 examples/skeleton/Makefile              | 3 +--
 examples/tep_termination/Makefile       | 3 +--
 examples/timer/Makefile                 | 3 +--
 examples/vdpa/Makefile                  | 3 +--
 examples/vhost/Makefile                 | 3 +--
 examples/vhost_crypto/Makefile          | 3 +--
 examples/vhost_scsi/Makefile            | 3 +--
 examples/vmdq/Makefile                  | 3 +--
 examples/vmdq_dcb/Makefile              | 3 +--
 42 files changed, 42 insertions(+), 84 deletions(-)

diff --git a/examples/bbdev_app/Makefile b/examples/bbdev_app/Makefile
index 2bf97e415..715c521a9 100644
--- a/examples/bbdev_app/Makefile
+++ b/examples/bbdev_app/Makefile
@@ -8,8 +8,7 @@ APP = bbdev
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/bond/Makefile b/examples/bond/Makefile
index 96868f2fc..0229b31bb 100644
--- a/examples/bond/Makefile
+++ b/examples/bond/Makefile
@@ -8,8 +8,7 @@ APP = bond_app
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/cmdline/Makefile b/examples/cmdline/Makefile
index 9b757316f..c1852080a 100644
--- a/examples/cmdline/Makefile
+++ b/examples/cmdline/Makefile
@@ -8,8 +8,7 @@ APP = cmdline
 SRCS-y := main.c commands.c parse_obj_list.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/distributor/Makefile b/examples/distributor/Makefile
index 6aa5e7a9e..bac8d5578 100644
--- a/examples/distributor/Makefile
+++ b/examples/distributor/Makefile
@@ -8,8 +8,7 @@ APP = distributor_app
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/eventdev_pipeline/Makefile b/examples/eventdev_pipeline/Makefile
index 626d56024..205145853 100644
--- a/examples/eventdev_pipeline/Makefile
+++ b/examples/eventdev_pipeline/Makefile
@@ -10,8 +10,7 @@ SRCS-y += pipeline_worker_generic.c
 SRCS-y += pipeline_worker_tx.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/exception_path/Makefile b/examples/exception_path/Makefile
index dc891b3d1..90c7f133a 100644
--- a/examples/exception_path/Makefile
+++ b/examples/exception_path/Makefile
@@ -8,8 +8,7 @@ APP = exception_path
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/fips_validation/Makefile b/examples/fips_validation/Makefile
index f8cbba592..9485daf7a 100644
--- a/examples/fips_validation/Makefile
+++ b/examples/fips_validation/Makefile
@@ -17,8 +17,7 @@ SRCS-y += fips_dev_self_test.c
 SRCS-y += main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/flow_classify/Makefile b/examples/flow_classify/Makefile
index aca7772b4..4c23e5c6d 100644
--- a/examples/flow_classify/Makefile
+++ b/examples/flow_classify/Makefile
@@ -8,8 +8,7 @@ APP = flow_classify
 SRCS-y := flow_classify.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/flow_filtering/Makefile b/examples/flow_filtering/Makefile
index a64a10a08..a63a75555 100644
--- a/examples/flow_filtering/Makefile
+++ b/examples/flow_filtering/Makefile
@@ -6,8 +6,7 @@ APP = flow
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/helloworld/Makefile b/examples/helloworld/Makefile
index 2ab294091..403afa050 100644
--- a/examples/helloworld/Makefile
+++ b/examples/helloworld/Makefile
@@ -8,8 +8,7 @@ APP = helloworld
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/ip_fragmentation/Makefile b/examples/ip_fragmentation/Makefile
index 63b66ce25..6af25a02e 100644
--- a/examples/ip_fragmentation/Makefile
+++ b/examples/ip_fragmentation/Makefile
@@ -9,8 +9,7 @@ APP = ip_fragmentation
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/ip_pipeline/Makefile b/examples/ip_pipeline/Makefile
index 1553d705d..cf10d7180 100644
--- a/examples/ip_pipeline/Makefile
+++ b/examples/ip_pipeline/Makefile
@@ -21,8 +21,7 @@ SRCS-y += tmgr.c
 SRCS-y += cryptodev.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/ip_reassembly/Makefile b/examples/ip_reassembly/Makefile
index 5af5d63bd..0b1a904e0 100644
--- a/examples/ip_reassembly/Makefile
+++ b/examples/ip_reassembly/Makefile
@@ -9,8 +9,7 @@ APP = ip_reassembly
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/ipsec-secgw/Makefile b/examples/ipsec-secgw/Makefile
index 1bfaf3b9a..851123be5 100644
--- a/examples/ipsec-secgw/Makefile
+++ b/examples/ipsec-secgw/Makefile
@@ -19,8 +19,7 @@ SRCS-y += ipsec-secgw.c
 CFLAGS += -gdwarf-2
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/ipv4_multicast/Makefile b/examples/ipv4_multicast/Makefile
index a03bfadbf..5f8a67dd4 100644
--- a/examples/ipv4_multicast/Makefile
+++ b/examples/ipv4_multicast/Makefile
@@ -9,8 +9,7 @@ APP = ipv4_multicast
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/kni/Makefile b/examples/kni/Makefile
index 46f592692..5dc8118e3 100644
--- a/examples/kni/Makefile
+++ b/examples/kni/Makefile
@@ -8,8 +8,7 @@ APP = kni
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/l2fwd-cat/Makefile b/examples/l2fwd-cat/Makefile
index e83d406b0..c1960d6d3 100644
--- a/examples/l2fwd-cat/Makefile
+++ b/examples/l2fwd-cat/Makefile
@@ -8,8 +8,7 @@ APP = l2fwd-cat
 SRCS-y := l2fwd-cat.c cat.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/l2fwd-crypto/Makefile b/examples/l2fwd-crypto/Makefile
index 87d311193..29fd530b4 100644
--- a/examples/l2fwd-crypto/Makefile
+++ b/examples/l2fwd-crypto/Makefile
@@ -8,8 +8,7 @@ APP = l2fwd-crypto
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/l2fwd-jobstats/Makefile b/examples/l2fwd-jobstats/Makefile
index d63ece8e3..729a39e93 100644
--- a/examples/l2fwd-jobstats/Makefile
+++ b/examples/l2fwd-jobstats/Makefile
@@ -8,8 +8,7 @@ APP = l2fwd-jobstats
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/l2fwd-keepalive/Makefile b/examples/l2fwd-keepalive/Makefile
index 9b92bc238..37de27a6f 100644
--- a/examples/l2fwd-keepalive/Makefile
+++ b/examples/l2fwd-keepalive/Makefile
@@ -8,8 +8,7 @@ APP = l2fwd-keepalive
 SRCS-y := main.c shm.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/l2fwd/Makefile b/examples/l2fwd/Makefile
index fb352e1b7..230352093 100644
--- a/examples/l2fwd/Makefile
+++ b/examples/l2fwd/Makefile
@@ -8,8 +8,7 @@ APP = l2fwd
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/l3fwd-acl/Makefile b/examples/l3fwd-acl/Makefile
index d12d3a987..e2c989f71 100644
--- a/examples/l3fwd-acl/Makefile
+++ b/examples/l3fwd-acl/Makefile
@@ -8,8 +8,7 @@ APP = l3fwd-acl
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/l3fwd-power/Makefile b/examples/l3fwd-power/Makefile
index 359f323dc..98248f462 100644
--- a/examples/l3fwd-power/Makefile
+++ b/examples/l3fwd-power/Makefile
@@ -8,8 +8,7 @@ APP = l3fwd-power
 SRCS-y := main.c perf_core.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/l3fwd-vf/Makefile b/examples/l3fwd-vf/Makefile
index 892ecf38b..7b186a23c 100644
--- a/examples/l3fwd-vf/Makefile
+++ b/examples/l3fwd-vf/Makefile
@@ -8,8 +8,7 @@ APP = l3fwd-vf
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/l3fwd/Makefile b/examples/l3fwd/Makefile
index 52976880a..c55f5c288 100644
--- a/examples/l3fwd/Makefile
+++ b/examples/l3fwd/Makefile
@@ -8,8 +8,7 @@ APP = l3fwd
 SRCS-y := main.c l3fwd_lpm.c l3fwd_em.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/link_status_interrupt/Makefile b/examples/link_status_interrupt/Makefile
index 77774eda7..97e5a14a8 100644
--- a/examples/link_status_interrupt/Makefile
+++ b/examples/link_status_interrupt/Makefile
@@ -8,8 +8,7 @@ APP = link_status_interrupt
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/load_balancer/Makefile b/examples/load_balancer/Makefile
index 09676a57c..caae8a107 100644
--- a/examples/load_balancer/Makefile
+++ b/examples/load_balancer/Makefile
@@ -8,8 +8,7 @@ APP = load_balancer
 SRCS-y := main.c config.c init.c runtime.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/packet_ordering/Makefile b/examples/packet_ordering/Makefile
index eb01b2d5b..51acaf7eb 100644
--- a/examples/packet_ordering/Makefile
+++ b/examples/packet_ordering/Makefile
@@ -8,8 +8,7 @@ APP = packet_ordering
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/ptpclient/Makefile b/examples/ptpclient/Makefile
index 019476a7a..89e2bacbd 100644
--- a/examples/ptpclient/Makefile
+++ b/examples/ptpclient/Makefile
@@ -8,8 +8,7 @@ APP = ptpclient
 SRCS-y := ptpclient.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/qos_meter/Makefile b/examples/qos_meter/Makefile
index e4d170177..e5217cf7c 100644
--- a/examples/qos_meter/Makefile
+++ b/examples/qos_meter/Makefile
@@ -8,8 +8,7 @@ APP = qos_meter
 SRCS-y := main.c rte_policer.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/qos_sched/Makefile b/examples/qos_sched/Makefile
index 0c92c4866..ce2d25371 100644
--- a/examples/qos_sched/Makefile
+++ b/examples/qos_sched/Makefile
@@ -8,8 +8,7 @@ APP = qos_sched
 SRCS-y := main.c args.c init.c app_thread.c cfg_file.c cmdline.c stats.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/rxtx_callbacks/Makefile b/examples/rxtx_callbacks/Makefile
index 2ababd2e4..edd5b52cd 100644
--- a/examples/rxtx_callbacks/Makefile
+++ b/examples/rxtx_callbacks/Makefile
@@ -8,8 +8,7 @@ APP = rxtx_callbacks
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/service_cores/Makefile b/examples/service_cores/Makefile
index ae7d6478c..abbb7aed2 100644
--- a/examples/service_cores/Makefile
+++ b/examples/service_cores/Makefile
@@ -8,8 +8,7 @@ APP = service_cores
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/skeleton/Makefile b/examples/skeleton/Makefile
index 68454a558..c5ac26029 100644
--- a/examples/skeleton/Makefile
+++ b/examples/skeleton/Makefile
@@ -8,8 +8,7 @@ APP = basicfwd
 SRCS-y := basicfwd.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/tep_termination/Makefile b/examples/tep_termination/Makefile
index be5aa9a64..31165bd92 100644
--- a/examples/tep_termination/Makefile
+++ b/examples/tep_termination/Makefile
@@ -8,8 +8,7 @@ APP = tep_termination
 SRCS-y := main.c vxlan_setup.c vxlan.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/timer/Makefile b/examples/timer/Makefile
index d21e4c63c..a86178355 100644
--- a/examples/timer/Makefile
+++ b/examples/timer/Makefile
@@ -8,8 +8,7 @@ APP = timer
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/vdpa/Makefile b/examples/vdpa/Makefile
index 734042380..2ac991a4b 100644
--- a/examples/vdpa/Makefile
+++ b/examples/vdpa/Makefile
@@ -9,8 +9,7 @@ SRCS-y := main.c
 CFLAGS += -DALLOW_EXPERIMENTAL_API
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/vhost/Makefile b/examples/vhost/Makefile
index 5e1400678..f84b7f017 100644
--- a/examples/vhost/Makefile
+++ b/examples/vhost/Makefile
@@ -8,8 +8,7 @@ APP = vhost-switch
 SRCS-y := main.c virtio_net.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/vhost_crypto/Makefile b/examples/vhost_crypto/Makefile
index e7958b5ba..a9e1c4d3a 100644
--- a/examples/vhost_crypto/Makefile
+++ b/examples/vhost_crypto/Makefile
@@ -9,8 +9,7 @@ SRCS-y := main.c
 CFLAGS += -DALLOW_EXPERIMENTAL_API
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/vhost_scsi/Makefile b/examples/vhost_scsi/Makefile
index 3ea37ebc6..c5aec269e 100644
--- a/examples/vhost_scsi/Makefile
+++ b/examples/vhost_scsi/Makefile
@@ -8,8 +8,7 @@ APP = vhost-scsi
 SRCS-y := scsi.c vhost_scsi.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/vmdq/Makefile b/examples/vmdq/Makefile
index dc1bc82d0..1557ee86b 100644
--- a/examples/vmdq/Makefile
+++ b/examples/vmdq/Makefile
@@ -8,8 +8,7 @@ APP = vmdq_app
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
diff --git a/examples/vmdq_dcb/Makefile b/examples/vmdq_dcb/Makefile
index a77e78987..391096cfb 100644
--- a/examples/vmdq_dcb/Makefile
+++ b/examples/vmdq_dcb/Makefile
@@ -8,8 +8,7 @@ APP = vmdq_dcb_app
 SRCS-y := main.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
-- 
2.21.0

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