[PATCH] Fix linkage to libutil and libkvm on FreeBSD 11

[Daniel P. Berrangé]

We are currently adding -lutil and -lkvm to the linker using the
add_project_link_arguments method. On FreeBSD 11.4, this results in
build errors because the args appear too early in the command line.

We need to pass the libraries as dependencies so that they get placed
at the same point in the linker args as other dependencies.

Signed-off-by: Daniel P. Berrangé <berrange at redhat.com>
---
 meson.build           | 16 +++++++---------
 src/bhyve/meson.build | 15 +++++++++++----
 src/util/meson.build  | 26 +++++++++++++++++---------
 3 files changed, 35 insertions(+), 22 deletions(-)

Using the CI patch I posted earlier to add FreeBSD 11:

  https://gitlab.com/berrange/libvirt/-/pipelines/185834799


diff --git a/meson.build b/meson.build
index 1eadea33bf..c30ff187aa 100644
--- a/meson.build
+++ b/meson.build
@@ -1086,7 +1086,8 @@ endif
 # Check for BSD kvm (kernel memory interface)
 if host_machine.system() == 'freebsd'
   kvm_dep = cc.find_library('kvm')
-  add_project_link_arguments('-lkvm', language: 'c')
+else
+  kvm_dep = disabler()
 endif
 
 libiscsi_version = '1.18.0'
@@ -1203,11 +1204,9 @@ have_gnu_gettext_tools = false
 if not get_option('nls').disabled()
   have_gettext = cc.has_function('gettext')
   if not have_gettext
-    intl_lib = cc.find_library('intl', required: false)
-    have_gettext = intl_lib.found()
-    if have_gettext
-      add_project_link_arguments('-lintl', language: 'c')
-    endif
+    intl_dep = cc.find_library('intl', required: false)
+  else
+    intl_dep = disabler()
   endif
   if not have_gettext and get_option('nls').enabled()
     error('gettext() is required to build libvirt')
@@ -1235,6 +1234,8 @@ if not get_option('nls').disabled()
       have_gnu_gettext_tools = true
     endif
   endif
+else
+  intl_dep = disabler()
 endif
 
 numactl_dep = cc.find_library('numa', required: get_option('numactl'))
@@ -1402,9 +1403,6 @@ if udev_dep.found()
 endif
 
 util_dep = cc.find_library('util', required: false)
-if util_dep.found()
-  add_project_link_arguments('-lutil', language: 'c')
-endif
 
 if not get_option('virtualport').disabled()
   if cc.has_header_symbol('linux/if_link.h', 'IFLA_PORT_MAX')
diff --git a/src/bhyve/meson.build b/src/bhyve/meson.build
index 7d54718820..c382f64aee 100644
--- a/src/bhyve/meson.build
+++ b/src/bhyve/meson.build
@@ -14,15 +14,22 @@ driver_source_files += bhyve_sources
 stateful_driver_source_files += bhyve_sources
 
 if conf.has('WITH_BHYVE')
+  bhyve_driver_deps = [
+    access_dep,
+    src_dep,
+  ]
+  if kvm_dep.found()
+    bhyve_driver_deps += kvm_dep
+  endif
+  if util_dep.found()
+    bhyve_driver_deps += util_dep
+  endif
   bhyve_driver_impl = static_library(
     'virt_driver_bhyve_impl',
     [
       bhyve_sources,
     ],
-    dependencies: [
-      access_dep,
-      src_dep,
-    ],
+    dependencies: bhyve_driver_deps,
     include_directories: [
       conf_inc_dir,
       hypervisor_inc_dir,
diff --git a/src/util/meson.build b/src/util/meson.build
index f7092cc3f1..c899f232e6 100644
--- a/src/util/meson.build
+++ b/src/util/meson.build
@@ -172,15 +172,7 @@ io_helper_sources = [
   'iohelper.c',
 ]
 
-virt_util_lib = static_library(
-  'virt_util',
-  [
-    util_sources,
-    util_public_sources,
-    keycode_gen_sources,
-    dtrace_gen_headers,
-  ],
-  dependencies: [
+virt_util_deps = [
     acl_dep,
     audit_dep,
     capng_dep,
@@ -195,7 +187,23 @@ virt_util_lib = static_library(
     thread_dep,
     win32_dep,
     yajl_dep,
+  ]
+if util_dep.found()
+  virt_util_deps += util_dep
+endif
+if intl_dep.found()
+  virt_util_deps += intl_dep
+endif
+
+virt_util_lib = static_library(
+  'virt_util',
+  [
+    util_sources,
+    util_public_sources,
+    keycode_gen_sources,
+    dtrace_gen_headers,
   ],
+  dependencies: virt_util_deps,
 )
 
 libvirt_libs += virt_util_lib
-- 
2.26.2