meson: use prefer_static option

The option is new in Meson 0.63 and removes the need to pass "static:
true" to all dependency and find_library invocation.  Actually cleaning
up the invocations is left for a separate patch.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

configure

@@ -2409,9 +2409,6 @@ fi
 if test "$solaris" = "yes" ; then
   echo "CONFIG_SOLARIS=y" >> $config_host_mak
 fi
-if test "$static" = "yes" ; then
-  echo "CONFIG_STATIC=y" >> $config_host_mak
-fi
 echo "SRC_PATH=$source_path" >> $config_host_mak
 echo "TARGET_DIRS=$target_list" >> $config_host_mak
 if test "$modules" = "yes"; then
@@ -2654,6 +2651,7 @@ if test "$skip_meson" = no; then
   # Built-in options
   test "$bindir" != "bin" && meson_option_add "-Dbindir=$bindir"
   test "$default_feature" = no && meson_option_add -Dauto_features=disabled
+  test "$static" = yes && meson_option_add -Dprefer_static=true
   test "$pie" = no && meson_option_add -Db_pie=false
   test "$werror" = yes && meson_option_add -Dwerror=true
 

docs/devel/build-system.rst

@@ -311,8 +311,7 @@ dependency will be used::
   sdl_image = not_found
   if not get_option('sdl_image').auto() or have_system
     sdl_image = dependency('SDL2_image', required: get_option('sdl_image'),
-                           method: 'pkg-config',
-                           static: enable_static)
+                           method: 'pkg-config')
   endif
 
 This avoids warnings on static builds of user-mode emulators, for example.

meson.build

@@ -18,10 +18,7 @@ targetos = host_machine.system()
 sh = find_program('sh')
 config_host = keyval.load(meson.current_build_dir() / 'config-host.mak')
 enable_modules = 'CONFIG_MODULES' in config_host
-enable_static = 'CONFIG_STATIC' in config_host
-
-# Allow both shared and static libraries unless --enable-static
-static_kwargs = enable_static ? {'static': true} : {}
+static_kwargs = {}
 
 cc = meson.get_compiler('c')
 all_languages = ['c']
@@ -193,7 +190,7 @@ qemu_cflags = config_host['QEMU_CFLAGS'].split()
 qemu_objcflags = config_host['QEMU_OBJCFLAGS'].split()
 qemu_ldflags = config_host['QEMU_LDFLAGS'].split()
 
-if enable_static
+if get_option('prefer_static')
   qemu_ldflags += get_option('b_pie') ? '-static-pie' : '-static'
 endif
 
@@ -841,7 +838,7 @@ if targetos == 'linux' and have_tools and get_option('mpath').allowed()
                                     kwargs: static_kwargs)
   if libmpathpersist.found()
     mpathlibs += libmpathpersist
-    if enable_static
+    if get_option('prefer_static')
       mpathlibs += cc.find_library('devmapper',
                                      required: get_option('mpath'),
                                      kwargs: static_kwargs)
@@ -1225,7 +1222,7 @@ if not gnutls_crypto.found()
     # Debian has removed -lgpg-error from libgcrypt-config
     # as it "spreads unnecessary dependencies" which in
     # turn breaks static builds...
-    if gcrypt.found() and enable_static
+    if gcrypt.found() and get_option('prefer_static')
       gcrypt = declare_dependency(dependencies: [
         gcrypt,
         cc.find_library('gpg-error', required: true, kwargs: static_kwargs)])
@@ -1657,7 +1654,7 @@ endif
 # libdw
 libdw = not_found
 if not get_option('libdw').auto() or \
-        (not enable_static and (have_system or have_user))
+        (not get_option('prefer_static') and (have_system or have_user))
     libdw = dependency('libdw',
                        method: 'pkg-config',
                        kwargs: static_kwargs,

qga/meson.build

@@ -22,7 +22,7 @@ have_qga_vss = get_option('qga_vss') \
     Then run configure with: --extra-cxxflags="-isystem /path/to/vss/inc/win2003"''') \
   .require(midl.found() or widl.found(),
            error_message: 'VSS support requires midl or widl') \
-  .require(not enable_static,
+  .require(not get_option('prefer_static'),
            error_message: 'VSS support requires dynamic linking with GLib') \
   .allowed()