examples: detect default build directory

Most examples have in their makefiles a default RTE_TARGET directory to be used in case RTE_TARGET is not set. Rather than just using a hard-coded default, we can instead detect what the build directory is relative to RTE_SDK directory. This fixes a potential issue for anyone who continues to build using "make install T=x86_64-native-linuxapp-gcc" and skips setting RTE_TARGET explicitly, instead relying on the fact that they were building in a directory which corresponded to the example default path - which was changed to "x86_64-native-linux-gcc" by commit 218c4e68c1d9 ("mk: use linux and freebsd in config names"). Signed-off-by: Bruce Richardson <bruce.richardson@intel.com> Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
2019-03-27 13:58:05 +00:00 · 2019-03-27 13:58:05 +00:00 · e9c6594264
commit e9c6594264
parent ff1e35fb5f
65 changed files with 130 additions and 130 deletions
--- a/examples/Makefile
+++ b/examples/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/bbdev_app/Makefile
+++ b/examples/bbdev_app/Makefile
@ -45,8 +45,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/bond/Makefile
+++ b/examples/bond/Makefile
@ -47,8 +47,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/cmdline/Makefile
+++ b/examples/cmdline/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/distributor/Makefile
+++ b/examples/distributor/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/ethtool/Makefile
+++ b/examples/ethtool/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overwritten by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/ethtool/ethtool-app/Makefile
+++ b/examples/ethtool/ethtool-app/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/ethtool/lib/Makefile
+++ b/examples/ethtool/lib/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overwritten by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/eventdev_pipeline/Makefile
+++ b/examples/eventdev_pipeline/Makefile
@ -47,8 +47,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/exception_path/Makefile
+++ b/examples/exception_path/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/fips_validation/Makefile
+++ b/examples/fips_validation/Makefile
@ -52,8 +52,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 INC += $(sort $(wildcard *.h))

--- a/examples/flow_classify/Makefile
+++ b/examples/flow_classify/Makefile
@ -45,8 +45,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/flow_filtering/Makefile
+++ b/examples/flow_filtering/Makefile
@ -41,8 +41,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/helloworld/Makefile
+++ b/examples/helloworld/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/ip_fragmentation/Makefile
+++ b/examples/ip_fragmentation/Makefile
@ -44,8 +44,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/ip_pipeline/Makefile
+++ b/examples/ip_pipeline/Makefile
@ -63,8 +63,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/ip_reassembly/Makefile
+++ b/examples/ip_reassembly/Makefile
@ -44,8 +44,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/ipsec-secgw/Makefile
+++ b/examples/ipsec-secgw/Makefile
@ -56,8 +56,8 @@ ifeq ($(RTE_SDK),)
 	$(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/ipv4_multicast/Makefile
+++ b/examples/ipv4_multicast/Makefile
@ -44,8 +44,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/kni/Makefile
+++ b/examples/kni/Makefile
@ -44,8 +44,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/l2fwd-cat/Makefile
+++ b/examples/l2fwd-cat/Makefile
@ -49,8 +49,8 @@ ifeq ($(PQOS_INSTALL_PATH),)
 $(error "Please define PQOS_INSTALL_PATH environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/l2fwd-crypto/Makefile
+++ b/examples/l2fwd-crypto/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/l2fwd-jobstats/Makefile
+++ b/examples/l2fwd-jobstats/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/l2fwd-keepalive/Makefile
+++ b/examples/l2fwd-keepalive/Makefile
@ -45,8 +45,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/l2fwd-keepalive/ka-agent/Makefile
+++ b/examples/l2fwd-keepalive/ka-agent/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/l2fwd/Makefile
+++ b/examples/l2fwd/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/l3fwd-acl/Makefile
+++ b/examples/l3fwd-acl/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/l3fwd-power/Makefile
+++ b/examples/l3fwd-power/Makefile
@ -45,8 +45,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/l3fwd-vf/Makefile
+++ b/examples/l3fwd-vf/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/l3fwd/Makefile
+++ b/examples/l3fwd/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/link_status_interrupt/Makefile
+++ b/examples/link_status_interrupt/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/load_balancer/Makefile
+++ b/examples/load_balancer/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/multi_process/Makefile
+++ b/examples/multi_process/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/multi_process/client_server_mp/Makefile
+++ b/examples/multi_process/client_server_mp/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/multi_process/client_server_mp/mp_server/Makefile
+++ b/examples/multi_process/client_server_mp/mp_server/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/multi_process/hotplug_mp/Makefile
+++ b/examples/multi_process/hotplug_mp/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/multi_process/simple_mp/Makefile
+++ b/examples/multi_process/simple_mp/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/multi_process/symmetric_mp/Makefile
+++ b/examples/multi_process/symmetric_mp/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/netmap_compat/Makefile
+++ b/examples/netmap_compat/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk
 unexport RTE_SRCDIR RTE_OUTPUT RTE_EXTMK
--- a/examples/netmap_compat/bridge/Makefile
+++ b/examples/netmap_compat/bridge/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define the RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/packet_ordering/Makefile
+++ b/examples/packet_ordering/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/performance-thread/Makefile
+++ b/examples/performance-thread/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/performance-thread/l3fwd-thread/Makefile
+++ b/examples/performance-thread/l3fwd-thread/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/performance-thread/pthread_shim/Makefile
+++ b/examples/performance-thread/pthread_shim/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/ptpclient/Makefile
+++ b/examples/ptpclient/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overriddegitn by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/qos_meter/Makefile
+++ b/examples/qos_meter/Makefile
@ -45,8 +45,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/qos_sched/Makefile
+++ b/examples/qos_sched/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/quota_watermark/Makefile
+++ b/examples/quota_watermark/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/quota_watermark/qw/Makefile
+++ b/examples/quota_watermark/qw/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/quota_watermark/qwctl/Makefile
+++ b/examples/quota_watermark/qwctl/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/rxtx_callbacks/Makefile
+++ b/examples/rxtx_callbacks/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/server_node_efd/Makefile
+++ b/examples/server_node_efd/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/server_node_efd/server/Makefile
+++ b/examples/server_node_efd/server/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/service_cores/Makefile
+++ b/examples/service_cores/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/skeleton/Makefile
+++ b/examples/skeleton/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/tep_termination/Makefile
+++ b/examples/tep_termination/Makefile
@ -47,8 +47,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/timer/Makefile
+++ b/examples/timer/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/vdpa/Makefile
+++ b/examples/vdpa/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/vhost/Makefile
+++ b/examples/vhost/Makefile
@ -47,8 +47,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/vhost_crypto/Makefile
+++ b/examples/vhost_crypto/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/vhost_scsi/Makefile
+++ b/examples/vhost_scsi/Makefile
@ -46,8 +46,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/vm_power_manager/Makefile
+++ b/examples/vm_power_manager/Makefile
@ -9,8 +9,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/vm_power_manager/guest_cli/Makefile
+++ b/examples/vm_power_manager/guest_cli/Makefile
@ -5,8 +5,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/vmdq/Makefile
+++ b/examples/vmdq/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk

--- a/examples/vmdq_dcb/Makefile
+++ b/examples/vmdq_dcb/Makefile
@ -43,8 +43,8 @@ ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif

-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linux-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))

 include $(RTE_SDK)/mk/rte.vars.mk