meson: clean up static_library keyword arguments

These are either built because they are dependencies of other targets,
or not needed at all because they are used via extract_objects().
Mark them as "build_by_default: false"; if applicable, mark them
as "fa" so that -Wl,--whole-archive does not interact with the
linker script used for fuzzing.

(The "fa" hack is brittle; updating to Meson 1.1 would allow using
declare_dependency(objects: ...) instead).

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1044
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

gdbstub/meson.build

@@ -21,12 +21,12 @@ libgdb_user = static_library('gdb_user',
                              gdb_user_ss.sources() + genh,
                              name_suffix: 'fa',
                              c_args: '-DCONFIG_USER_ONLY',
-                             build_by_default: have_user)
+                             build_by_default: false)
 
 libgdb_softmmu = static_library('gdb_softmmu',
                                 gdb_system_ss.sources() + genh,
                                 name_suffix: 'fa',
-                                build_by_default: have_system)
+                                build_by_default: false)
 
 gdb_user = declare_dependency(link_whole: libgdb_user)
 user_ss.add(gdb_user)

meson.build

@@ -3180,7 +3180,6 @@ foreach d : hx_headers
                 input: files(d[0]),
                 output: d[1],
                 capture: true,
-                build_by_default: true, # to be removed when added to a target
                 command: [hxtool, '-h', '@INPUT0@'])
 endforeach
 genh += hxdep
@@ -3366,12 +3365,15 @@ endif
 qom_ss = qom_ss.apply(config_targetos, strict: false)
 libqom = static_library('qom', qom_ss.sources() + genh,
                         dependencies: [qom_ss.dependencies()],
-                        name_suffix: 'fa')
+                        name_suffix: 'fa',
+                        build_by_default: false)
 qom = declare_dependency(link_whole: libqom)
 
 event_loop_base = files('event-loop-base.c')
-event_loop_base = static_library('event-loop-base', sources: event_loop_base + genh,
-                                 build_by_default: true)
+event_loop_base = static_library('event-loop-base',
+                                 sources: event_loop_base + genh,
+                                 name_suffix: 'fa',
+                                 build_by_default: false)
 event_loop_base = declare_dependency(link_whole: event_loop_base,
                                      dependencies: [qom])
 
@@ -3380,6 +3382,7 @@ stub_ss = stub_ss.apply(config_all, strict: false)
 util_ss.add_all(trace_ss)
 util_ss = util_ss.apply(config_all, strict: false)
 libqemuutil = static_library('qemuutil',
+                             build_by_default: false,
                              sources: util_ss.sources() + stub_ss.sources() + genh,
                              dependencies: [util_ss.dependencies(), libm, threads, glib, socket, malloc, pixman])
 qemuutil = declare_dependency(link_with: libqemuutil,

tcg/meson.build

@@ -28,7 +28,7 @@ libtcg_user = static_library('tcg_user',
                              tcg_ss.sources() + genh,
                              name_suffix: 'fa',
                              c_args: '-DCONFIG_USER_ONLY',
-                             build_by_default: have_user)
+                             build_by_default: false)
 
 tcg_user = declare_dependency(link_with: libtcg_user,
                               dependencies: tcg_ss.dependencies())
@@ -38,7 +38,7 @@ libtcg_softmmu = static_library('tcg_softmmu',
                                 tcg_ss.sources() + genh,
                                 name_suffix: 'fa',
                                 c_args: '-DCONFIG_SOFTMMU',
-                                build_by_default: have_system)
+                                build_by_default: false)
 
 tcg_softmmu = declare_dependency(link_with: libtcg_softmmu,
                                  dependencies: tcg_ss.dependencies())