[dpdk-dev] [PATCH 2/4] crypto/qat: add libcrypto detection to Makefile

[Tomasz Jozwiak <tomaszx.jozwiak@intel.com>]

This patch adds detection of libcrypto in qat/Makefile.
Crypto QAT PMD is build, but only when this library is installed.

Signed-off-by: Tomasz Jozwiak <tomaszx.jozwiak@intel.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>
---
 config/common_base               |  5 +++--
 drivers/crypto/qat/Makefile      | 32 ++++++++++++++++++++------------
 drivers/crypto/qat/meson.build   | 15 +++++++++------
 drivers/crypto/qat/qat_sym.h     |  9 +++++++++
 drivers/crypto/qat/qat_sym_pmd.h |  5 +++++
 5 files changed, 46 insertions(+), 20 deletions(-)

diff --git a/config/common_base b/config/common_base
index 3cd702e..f456f95 100644
--- a/config/common_base
+++ b/config/common_base
@@ -480,8 +480,9 @@ CONFIG_RTE_DPAA_SEC_PMD_MAX_NB_SESSIONS=2048
 
 #
 # Compile PMD for QuickAssist based devices
-#
-CONFIG_RTE_LIBRTE_PMD_QAT=n
+# This QAT flag causes crypto QAT PMD to build,
+# but only if libcrypto is installed.
+CONFIG_RTE_LIBRTE_PMD_QAT=y
 #
 # Max. number of QuickAssist devices, which can be detected and attached
 #
diff --git a/drivers/crypto/qat/Makefile b/drivers/crypto/qat/Makefile
index 64f39fd..77700b4 100644
--- a/drivers/crypto/qat/Makefile
+++ b/drivers/crypto/qat/Makefile
@@ -3,6 +3,9 @@
 
 include $(RTE_SDK)/mk/rte.vars.mk
 
+# libcrypto detection
+LIBCRYPTO := $(shell pkg-config --exists libcrypto 1>&2 2> /dev/null; echo $$?)
+
 # library name
 LIB = librte_pmd_qat.a
 
@@ -15,19 +18,24 @@ CFLAGS += -O3
 
 # external library include paths
 CFLAGS += -I$(SRCDIR)/qat_adf
-LDLIBS += -lcrypto
-LDLIBS += -lrte_eal -lrte_mbuf -lrte_mempool -lrte_ring
-LDLIBS += -lrte_cryptodev
-LDLIBS += -lrte_pci -lrte_bus_pci
 
-# library source files
-SRCS-$(CONFIG_RTE_LIBRTE_PMD_QAT) += qat_sym.c
-SRCS-$(CONFIG_RTE_LIBRTE_PMD_QAT) += qat_device.c
-SRCS-$(CONFIG_RTE_LIBRTE_PMD_QAT) += qat_qp.c
-SRCS-$(CONFIG_RTE_LIBRTE_PMD_QAT) += qat_sym_session.c
-SRCS-$(CONFIG_RTE_LIBRTE_PMD_QAT) += qat_common.c
-SRCS-$(CONFIG_RTE_LIBRTE_PMD_QAT) += qat_logs.c
-SRCS-$(CONFIG_RTE_LIBRTE_PMD_QAT) += qat_sym_pmd.c
+# library common source files
+SRCS-y += qat_device.c
+SRCS-y += qat_common.c
+SRCS-y += qat_logs.c
+SRCS-y += qat_qp.c
+
+ifeq ($(LIBCRYPTO),0)
+	LDLIBS += -lrte_cryptodev
+	LDLIBS += -lcrypto
+	CFLAGS += -DCONFIG_LIBCRYPTO_QAT
+	SRCS-y += qat_sym.c
+	SRCS-y += qat_sym_session.c
+	SRCS-y += qat_sym_pmd.c
+endif
+
+LDLIBS += -lrte_eal -lrte_mbuf -lrte_mempool
+LDLIBS += -lrte_pci -lrte_bus_pci
 
 # export include files
 SYMLINK-y-include +=
diff --git a/drivers/crypto/qat/meson.build b/drivers/crypto/qat/meson.build
index 6d01dac..c96486a 100644
--- a/drivers/crypto/qat/meson.build
+++ b/drivers/crypto/qat/meson.build
@@ -2,15 +2,18 @@
 # Copyright(c) 2017-2018 Intel Corporation
 
 dep = dependency('libcrypto', required: false)
-if not dep.found()
-	build = false
-endif
+
 sources = files('qat_common.c',
 		'qat_qp.c',
 		'qat_device.c',
-		'qat_logs.c',
-		'qat_sym_pmd.c', 'qat_sym.c', 'qat_sym_session.c')
+		'qat_logs.c')
+
+if dep.found()
+	sources += files('qat_sym_pmd.c', 'qat_sym.c', 'qat_sym_session.c')
+	pkgconfig_extra_libs += '-lcrypto'
+	cflags += '-DCONFIG_LIBCRYPTO_QAT'
+endif
+
 includes += include_directories('qat_adf')
 deps += ['bus_pci']
 ext_deps += dep
-pkgconfig_extra_libs += '-lcrypto'
diff --git a/drivers/crypto/qat/qat_sym.h b/drivers/crypto/qat/qat_sym.h
index f9e72a6..3c8ec5b 100644
--- a/drivers/crypto/qat/qat_sym.h
+++ b/drivers/crypto/qat/qat_sym.h
@@ -7,6 +7,8 @@
 
 #include <rte_cryptodev_pmd.h>
 
+#ifdef CONFIG_LIBCRYPTO_QAT
+
 #include <openssl/evp.h>
 
 #include "qat_common.h"
@@ -153,4 +155,11 @@ qat_sym_process_response(void **op, uint8_t *resp)
 	}
 	*op = (void *)rx_op;
 }
+#else
+
+static inline void
+qat_sym_process_response(void **op __rte_unused, uint8_t *resp __rte_unused)
+{
+}
+#endif
 #endif /* _QAT_SYM_H_ */
diff --git a/drivers/crypto/qat/qat_sym_pmd.h b/drivers/crypto/qat/qat_sym_pmd.h
index 80a1987..641cc4b 100644
--- a/drivers/crypto/qat/qat_sym_pmd.h
+++ b/drivers/crypto/qat/qat_sym_pmd.h
@@ -5,6 +5,9 @@
 #ifndef _QAT_SYM_PMD_H_
 #define _QAT_SYM_PMD_H_
 
+#ifdef CONFIG_LIBCRYPTO_QAT
+
+
 #include <rte_cryptodev.h>
 
 #include "qat_sym_capabilities.h"
@@ -37,4 +40,6 @@ qat_sym_dev_create(struct qat_pci_device *qat_pci_dev);
 
 int
 qat_sym_dev_destroy(struct qat_pci_device *qat_pci_dev);
+
+#endif
 #endif /* _QAT_SYM_PMD_H_ */
-- 
2.7.4