Those files will be compiled once per base architecture ("arm" in this
case), instead of being compiled for every variant/bitness of
architecture.
We make sure to not include target cpu definitions (exec/cpu-defs.h) by
defining header guard directly. This way, a given compilation unit can
access a specific cpu definition, but not access to compile time defines
associated.
Previous commits took care to clean up some headers to not rely on
cpu-defs.h content.
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@xxxxxxxxxx>
---
meson.build | 36 +++++++++++++++++++++++++++++++++++-
1 file changed, 35 insertions(+), 1 deletion(-)
diff --git a/meson.build b/meson.build
index 672a0f79d11..0dec7d9750e 100644
--- a/meson.build
+++ b/meson.build
@@ -3689,6 +3689,7 @@ hw_arch = {}
target_arch = {}
target_system_arch = {}
target_user_arch = {}
+hw_common_arch = {}
# NOTE: the trace/ subdirectory needs the qapi_trace_events variable
# that is filled in by qapi/.
@@ -4065,6 +4066,33 @@ common_all = static_library('common',
implicit_include_directories: false,
dependencies: common_ss.all_dependencies())
+# construct common libraries per base architecture
+hw_common_arch_libs = {}
+foreach target : target_dirs
+ config_target = config_target_mak[target]
+ target_base_arch = config_target['TARGET_BASE_ARCH']
+
+ # check if already generated
+ if target_base_arch in hw_common_arch_libs
+ continue
+ endif
+
+ if target_base_arch in hw_common_arch
+ src = hw_common_arch[target_base_arch]
+ lib = static_library(
+ 'hw_' + target_base_arch,
+ build_by_default: false,
+ sources: src.all_sources() + genh,
+ include_directories: common_user_inc,
+ implicit_include_directories: false,
+ # prevent common code to access cpu compile time
+ # definition, but still allow access to cpu.h
+ c_args: ['-DCPU_DEFS_H', '-DCONFIG_SOFTMMU'],
+ dependencies: src.all_dependencies())
+ hw_common_arch_libs += {target_base_arch: lib}
+ endif
+endforeach
+
if have_rust
# We would like to use --generate-cstr, but it is only available
# starting with bindgen 0.66.0. The oldest supported versions
@@ -4230,8 +4258,14 @@ foreach target : target_dirs
arch_deps += t.dependencies()
target_common = common_ss.apply(config_target, strict: false)
- objects = common_all.extract_objects(target_common.sources())
+ objects = [common_all.extract_objects(target_common.sources())]
arch_deps += target_common.dependencies()
+ if target_type == 'system' and target_base_arch in hw_common_arch_libs
+ src = hw_common_arch[target_base_arch].apply(config_target, strict: false)
+ lib = hw_common_arch_libs[target_base_arch]
+ objects += lib.extract_objects(src.sources())
+ arch_deps += src.dependencies()
+ endif
target_specific = specific_ss.apply(config_target, strict: false)
arch_srcs += target_specific.sources()
--
2.39.5
