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modules: add documentation for module sourcesets 

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Jose R. Ziviani <jziviani@suse.de>
Message-Id: <20210624103836.2382472-22-kraxel@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Gerd Hoffmann 2021-06-24 12:38:23 +02:00 committed by Paolo Bonzini
parent db2e89df99
commit 964711c44c
1 changed files with 17 additions and 0 deletions
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17
docs/devel/build-system.rst
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@ -272,6 +272,23 @@ Target-dependent emulator sourcesets:
target_arch += {'arm': arm_ss}
target_softmmu_arch += {'arm': arm_softmmu_ss}
Module sourcesets:
There are two dictionaries for modules: `modules` is used for
target-independent modules and `target_modules` is used for
target-dependent modules. When modules are disabled the `module`
source sets are added to `softmmu_ss` and the `target_modules`
source sets are added to `specific_ss`.
Both dictionaries are nested. One dictionary is created per
subdirectory, and these per-subdirectory dictionaries are added to
the toplevel dictionaries. For example::
hw_display_modules = {}
qxl_ss = ss.source_set()
...
hw_display_modules += { 'qxl': qxl_ss }
modules += { 'hw-display': hw_display_modules }
Utility sourcesets:
All binaries link with a static library `libqemuutil.a`. This library
is built from several sourcesets; most of them however host generated