meson: add modules infrastructure

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

1 files changed, 51 insertions, 0 deletions

diff --git a/meson.build b/meson.build
index 6f8024cdcf..13b83ea14b 100644
--- a/meson.build
+++ b/meson.build
@@ -10,6 +10,7 @@ sh = find_program('sh')
 cc = meson.get_compiler('c')
 config_host = keyval.load(meson.current_build_dir() / 'config-host.mak')
 config_all_disas = keyval.load(meson.current_build_dir() / 'config-all-disas.mak')
+enable_modules = 'CONFIG_MODULES' in config_host
 
 add_project_arguments(config_host['QEMU_CFLAGS'].split(),
                       native: false, language: ['c', 'objc'])
@@ -316,6 +317,7 @@ genh += hxdep
 util_ss = ss.source_set()
 stub_ss = ss.source_set()
 trace_ss = ss.source_set()
+block_ss = ss.source_set()
 common_ss = ss.source_set()
 softmmu_ss = ss.source_set()
 user_ss = ss.source_set()
@@ -323,6 +325,7 @@ bsd_user_ss = ss.source_set()
 linux_user_ss = ss.source_set()
 specific_ss = ss.source_set()
 
+modules = {}
 hw_arch = {}
 target_arch = {}
 target_softmmu_arch = {}
@@ -432,6 +435,12 @@ subdir('crypto')
 subdir('storage-daemon')
 subdir('ui')
 
+
+if enable_modules
+  libmodulecommon = static_library('module-common', files('module-common.c') + genh, pic: true, c_args: '-DBUILD_DSO')
+  modulecommon = declare_dependency(link_whole: libmodulecommon, compile_args: '-DBUILD_DSO')
+endif
+
 # Build targets from sourcesets
 
 stub_ss = stub_ss.apply(config_all, strict: false)
@@ -448,6 +457,48 @@ subdir('io')
 subdir('fsdev')
 subdir('target')
 
+block_mods = []
+softmmu_mods = []
+foreach d, list : modules
+  foreach m, module_ss : list
+    if enable_modules and targetos != 'windows'
+      module_ss = module_ss.apply(config_host, strict: false)
+      sl = static_library(d + '-' + m, [genh, module_ss.sources()],
+                          dependencies: [modulecommon, module_ss.dependencies()], pic: true)
+      if d == 'block'
+        block_mods += sl
+      else
+        softmmu_mods += sl
+      endif
+    else
+      if d == 'block'
+        block_ss.add_all(module_ss)
+      else
+        softmmu_ss.add_all(module_ss)
+      endif
+    endif
+  endforeach
+endforeach
+
+nm = find_program('nm')
+undefsym = find_program('scripts/undefsym.sh')
+block_syms = custom_target('block.syms', output: 'block.syms',
+                             input: [libqemuutil, block_mods],
+                             capture: true,
+                             command: [undefsym, nm, '@INPUT@'])
+qemu_syms = custom_target('qemu.syms', output: 'qemu.syms',
+                             input: [libqemuutil, softmmu_mods],
+                             capture: true,
+                             command: [undefsym, nm, '@INPUT@'])
+
+foreach m : block_mods + softmmu_mods
+  shared_module(m.name(),
+                name_prefix: '',
+                link_whole: m,
+                install: true,
+                install_dir: config_host['qemu_moddir'])
+endforeach
+
 common_ss.add_all(when: 'CONFIG_SOFTMMU', if_true: softmmu_ss)
 common_ss.add_all(when: 'CONFIG_USER_ONLY', if_true: user_ss)