[dpdk-dev] [PATCH v4 4/4] build: add libbsd to pkg-config file if enabled

[Bruce Richardson]

If libbsd is enabled in DPDK, the strlcpy and strlcat functions in
rte_string_fns.h redirect to the varients in libbsd, only using the
fallbacks if it is not enabled. Therefore, if libbsd is enabled, it needs
to be called out as a DPDK dependency in the pkgconfig file.

To ensure that we don't have undefined variables on non-Linux platforms, we
can remove the linux condition around the libbsd check - no harm comes in
looking for it on other OS, since it's an optional dependency.

Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
Acked-by: Luca Boccassi <bluca at debian.org>
---
 config/meson.build | 10 ++++------
 meson.build        |  2 ++
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/config/meson.build b/config/meson.build
index 3678348de..0d25646f5 100644
--- a/config/meson.build
+++ b/config/meson.build
@@ -132,12 +132,10 @@ if numa_dep.found() and cc.has_header('numaif.h')
 	dpdk_extra_ldflags += '-lnuma'
 endif
 
-# check for strlcpy
-if is_linux
-	libbsd = dependency('libbsd', required: false)
-	if libbsd.found()
-		dpdk_conf.set('RTE_USE_LIBBSD', 1)
-	endif
+# check for libbsd
+libbsd = dependency('libbsd', required: false)
+if libbsd.found()
+	dpdk_conf.set('RTE_USE_LIBBSD', 1)
 endif
 
 # add -include rte_config to cflags
diff --git a/meson.build b/meson.build
index d1e8e5239..46f9c5683 100644
--- a/meson.build
+++ b/meson.build
@@ -70,6 +70,8 @@ pkg.generate(name: meson.project_name(),
 	libraries: dpdk_libraries,
 	libraries_private: dpdk_drivers + dpdk_static_libraries +
 			['-Wl,-Bdynamic'] + dpdk_extra_ldflags,
+	requires: libbsd, # apps using rte_string_fns.h may need this if enabled
+	                  # if libbsd is not enabled, then this is blank
 	description: '''The Data Plane Development Kit (DPDK).
 Note that CFLAGS might contain an -march flag higher than typical baseline.
 This is required for a number of static inline functions in the public headers.''',
-- 
2.20.1