[dpdk-dev] [PATCH v2 3/3] crypto/aesni_gcm: add check for build dependency

[Bruce Richardson <bruce.richardson@intel.com>]

The aesni_mb driver has a check in its Makefile for the correct version of
the IPsec_MB library, but this check was missed for the aesni_gcm driver.
Add this check to the makefile, removing an unnecessary assignment in the
process.

Suggested-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 drivers/crypto/aesni_gcm/Makefile | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/drivers/crypto/aesni_gcm/Makefile b/drivers/crypto/aesni_gcm/Makefile
index 9241ad762..39eff3db0 100644
--- a/drivers/crypto/aesni_gcm/Makefile
+++ b/drivers/crypto/aesni_gcm/Makefile
@@ -23,11 +23,24 @@ LDLIBS += -lrte_eal -lrte_mbuf -lrte_mempool -lrte_ring
 LDLIBS += -lrte_cryptodev
 LDLIBS += -lrte_bus_vdev
 
+IMB_HDR = $(shell echo '\#include <intel-ipsec-mb.h>' | \
+	$(CC) -E $(EXTRA_CFLAGS) - | grep 'intel-ipsec-mb.h' | \
+	head -n1 | cut -d'"' -f2)
+
+# Detect library version
+IMB_VERSION = $(shell grep -e "IMB_VERSION_STR" $(IMB_HDR) | cut -d'"' -f2)
+IMB_VERSION_NUM = $(shell grep -e "IMB_VERSION_NUM" $(IMB_HDR) | cut -d' ' -f3)
+
+ifeq ($(IMB_VERSION),)
+$(error "IPSec_MB version >= 0.52 is required")
+endif
+
+ifeq ($(shell expr $(IMB_VERSION_NUM) \< 0x3400), 1)
+$(error "IPSec_MB version >= 0.52 is required")
+endif
+
 # library source files
 SRCS-$(CONFIG_RTE_LIBRTE_PMD_AESNI_GCM) += aesni_gcm_pmd.c
 SRCS-$(CONFIG_RTE_LIBRTE_PMD_AESNI_GCM) += aesni_gcm_pmd_ops.c
 
-# export include files
-SYMLINK-y-include +=
-
 include $(RTE_SDK)/mk/rte.lib.mk
-- 
2.20.1