Normally, each library has it's own version number based on the ABI.
Add an option to have all libs just use the DPDK version number as the
.so version.

Signed-off-by: Bruce Richardson <bruce.richard...@intel.com>
---
 drivers/meson.build                     | 13 ++++++++++++-
 lib/librte_eal/bsdapp/eal/meson.build   | 12 +++++++++++-
 lib/librte_eal/linuxapp/eal/meson.build | 12 +++++++++++-
 lib/meson.build                         | 12 +++++++++++-
 meson_options.txt                       |  1 +
 5 files changed, 46 insertions(+), 4 deletions(-)

diff --git a/drivers/meson.build b/drivers/meson.build
index f19da16fb..3ea42b04b 100644
--- a/drivers/meson.build
+++ b/drivers/meson.build
@@ -92,6 +92,16 @@ foreach class:driver_classes
                                                depends: [pmdinfogen, tmp_lib])
                        endforeach
 
+                       if get_option('per_library_versions')
+                               lib_version = '@0@.1'.format(version)
+                               so_version = '@0@'.format(version)
+                       else
+                               pver = meson.project_version().split('.')
+                               lib_version = '@0@.@1@'.format(pver.get(0),
+                                               pver.get(1))
+                               so_version = lib_version
+                       endif
+
                        # now build the driver itself, and add to the drivers 
list
                        lib_name = driver_name_fmt.format(name)
                        version_map = '@0@/@1@/@2@_version.map'.format(
@@ -105,7 +115,8 @@ foreach class:driver_classes
                                c_args: cflags,
                                link_args: '-Wl,--version-script=' + 
version_map,
                                link_depends: version_map,
-                               version: '@0@.1'.format(version),
+                               version: lib_version,
+                               soversion: so_version,
                                install: true,
                                install_dir: driver_install_path)
 
diff --git a/lib/librte_eal/bsdapp/eal/meson.build 
b/lib/librte_eal/bsdapp/eal/meson.build
index 00973122a..f6c43fd44 100644
--- a/lib/librte_eal/bsdapp/eal/meson.build
+++ b/lib/librte_eal/bsdapp/eal/meson.build
@@ -46,11 +46,21 @@ sources = ['eal_alarm.c',
 
 eal_extra_link_arg = '-lexecinfo'
 
+if get_option('per_library_versions')
+       lib_version = '@0@.1'.format(version)
+       so_version = '@0@'.format(version)
+else
+       pver = meson.project_version().split('.')
+       lib_version = '@0@.@1@'.format(pver.get(0), pver.get(1))
+       so_version = lib_version
+endif
+
 version_map = join_paths(meson.current_source_dir(), 'rte_eal_version.map')
 eal_lib = library('rte_eal', sources, eal_common_sources, 
eal_common_arch_sources,
                        dependencies: dependency('threads'),
                        include_directories : eal_inc,
-                       version: '@0@.1'.format(version),
+                       version: lib_version,
+                       soversion: so_version,
                        c_args: '-D_GNU_SOURCE',
                        link_depends: version_map,
                        link_args: [eal_extra_link_arg,
diff --git a/lib/librte_eal/linuxapp/eal/meson.build 
b/lib/librte_eal/linuxapp/eal/meson.build
index e7daed499..bffbd7e66 100644
--- a/lib/librte_eal/linuxapp/eal/meson.build
+++ b/lib/librte_eal/linuxapp/eal/meson.build
@@ -51,11 +51,21 @@ sources = ['eal_alarm.c',
 
 eal_extra_link_arg = '-ldl'
 
+if get_option('per_library_versions')
+       lib_version = '@0@.1'.format(version)
+       so_version = '@0@'.format(version)
+else
+       pver = meson.project_version().split('.')
+       lib_version = '@0@.@1@'.format(pver.get(0), pver.get(1))
+       so_version = lib_version
+endif
+
 version_map = join_paths(meson.current_source_dir(), 'rte_eal_version.map')
 eal_lib = library('rte_eal', sources, eal_common_sources, 
eal_common_arch_sources,
                        dependencies: dependency('threads'),
                        include_directories : eal_inc,
-                       version: '@0@.1'.format(version),
+                       version: lib_version,
+                       soversion: so_version,
                        c_args: '-D_GNU_SOURCE',
                        link_depends: version_map,
                        link_args: [eal_extra_link_arg,
diff --git a/lib/meson.build b/lib/meson.build
index d814721de..5244fe4a5 100644
--- a/lib/meson.build
+++ b/lib/meson.build
@@ -76,6 +76,15 @@ foreach l:libraries
                        dep_objs += [get_variable('dep_rte_' + d)]
                endforeach
 
+               if get_option('per_library_versions')
+                       lib_version = '@0@.1'.format(version)
+                       so_version = '@0@'.format(version)
+               else
+                       pver = meson.project_version().split('.')
+                       lib_version = '@0@.@1@'.format(pver.get(0), pver.get(1))
+                       so_version = lib_version
+               endif
+
                version_map = '@0@/@1@/rte_@2@_version.map'.format(
                                meson.current_source_dir(), dir_name, name)
                libname = 'rte_' + name
@@ -87,7 +96,8 @@ foreach l:libraries
                                include_directories: 
include_directories(dir_name),
                                link_args: '-Wl,--version-script=' + 
version_map,
                                link_depends: version_map,
-                               version: '@0@.1'.format(version),
+                               version: lib_version,
+                               soversion: so_version,
                                install: true)
                dep = declare_dependency(link_with: lib,
                                include_directories: 
include_directories(dir_name),
diff --git a/meson_options.txt b/meson_options.txt
index 9c45b8159..636226ce8 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -6,3 +6,4 @@ option('allow_invalid_socket_id', type: 'boolean', value: false,
        description: 'allow out-of-range NUMA socket id\'s for platforms that 
don\'t report the value correctly')
 option('enable_kmods', type: 'boolean', value: true, description: 'build 
kernel modules')
 option('kernel_dir', type: 'string', value: '', description: 'path to the 
kernel for building kernel modules')
+option('per_library_versions', type: 'boolean', value: true, description: 
'true: each lib gets its own version number, false: DPDK version used for each 
lib')
-- 
2.13.5

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