[dpdk-stable] [PATCH v5 6/6] net/mlx: fix overlinking with meson and glue dlopen

[Thomas Monjalon <thomas@monjalon.net>]

If ibverbs_link is dlopen, the PMD and application should not
be linked with ibverbs, but the glue library is.
Unfortunately the ibverbs dependency was exported in the
variable ext_deps, so there were overlinking.

It is fixed by not exporting the dependency in ext_deps,
and recreating a limited dependency object for cflags only.

Fixes: 1dd7c7e38c19 ("net/mlx4: support meson build")
Fixes: 96d7c62a70c7 ("net/mlx5: support meson build")
Cc: stable@dpdk.org

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
---
 drivers/common/mlx5/meson.build | 6 ++++--
 drivers/net/mlx4/meson.build    | 6 ++++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/common/mlx5/meson.build b/drivers/common/mlx5/meson.build
index 0fe086136a..cfc178257d 100644
--- a/drivers/common/mlx5/meson.build
+++ b/drivers/common/mlx5/meson.build
@@ -29,7 +29,7 @@ foreach libname:libnames
 	endif
 	if lib.found()
 		libs += lib
-		if not static_ibverbs
+		if not static_ibverbs and not dlopen_ibverbs
 			ext_deps += lib
 		endif
 	else
@@ -38,10 +38,12 @@ foreach libname:libnames
 		subdir_done()
 	endif
 endforeach
-if static_ibverbs
+if static_ibverbs or dlopen_ibverbs
 	# Build without adding shared libs to Requires.private
 	ibv_cflags = run_command(pkgconf, '--cflags', 'libibverbs').stdout()
 	ext_deps += declare_dependency(compile_args: ibv_cflags.split())
+endif
+if static_ibverbs
 	# Add static deps ldflags to internal apps and Libs.private
 	ibv_ldflags = run_command(ldflags_ibverbs_static, check:true).stdout()
 	ext_deps += declare_dependency(link_args:ibv_ldflags.split())
diff --git a/drivers/net/mlx4/meson.build b/drivers/net/mlx4/meson.build
index f66e70f4d1..c598745730 100644
--- a/drivers/net/mlx4/meson.build
+++ b/drivers/net/mlx4/meson.build
@@ -30,7 +30,7 @@ foreach libname:libnames
 	endif
 	if lib.found()
 		libs += lib
-		if not static_ibverbs
+		if not static_ibverbs and not dlopen_ibverbs
 			ext_deps += lib
 		endif
 	else
@@ -39,10 +39,12 @@ foreach libname:libnames
 		subdir_done()
 	endif
 endforeach
-if static_ibverbs
+if static_ibverbs or dlopen_ibverbs
 	# Build without adding shared libs to Requires.private
 	ibv_cflags = run_command(pkgconf, '--cflags', 'libibverbs').stdout()
 	ext_deps += declare_dependency(compile_args: ibv_cflags.split())
+endif
+if static_ibverbs
 	# Add static deps ldflags to internal apps and Libs.private
 	ibv_ldflags = run_command(ldflags_ibverbs_static, check:true).stdout()
 	ext_deps += declare_dependency(link_args:ibv_ldflags.split())
-- 
2.25.0