examples/l2fwd-crypto: fix build with pkg-config

[ upstream commit bcd3004 ]

Two issues fixed here.

First add the experimental flag.
Then fix a link issue with the crypto scheduler driver:
/usr/bin/ld: /tmp/cchr7aHA.o: in function `main':
main.c:(.text.startup+0x1673): undefined reference to
`rte_cryptodev_scheduler_workers_get'
collect2: error: ld returned 1 exit status

Fixes: e3bcb99 ("examples/l2fwd-crypto: limit number of sessions")
Fixes: 261bbff ("examples: use separate crypto session mempools")

Signed-off-by: David Marchand <david.marchand@redhat.com>

examples/l2fwd-crypto/Makefile

@@ -24,6 +24,12 @@ CFLAGS += -O3 $(shell $(PKGCONF) --cflags libdpdk)
 LDFLAGS_SHARED = $(shell $(PKGCONF) --libs libdpdk)
 LDFLAGS_STATIC = $(shell $(PKGCONF) --static --libs libdpdk)
 
+CFLAGS += -DALLOW_EXPERIMENTAL_API
+CONFIG_DEFINES = $(shell $(CC) $(CFLAGS) -dM -E - < /dev/null)
+ifneq ($(findstring RTE_CRYPTO_SCHEDULER,$(CONFIG_DEFINES)),)
+LDFLAGS_SHARED += -lrte_crypto_scheduler
+endif
+
 build/$(APP)-shared: $(SRCS-y) Makefile $(PC_FILE) | build
 	$(CC) $(CFLAGS) $(SRCS-y) -o $@ $(LDFLAGS) $(LDFLAGS_SHARED)