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New interface library target wxBase restricts view of wxWidgets...

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... It will be used as a target link library of some lower level Audacity
libraries, to be separated from the executable.

These libraries will have link time dependency only on the wxBase subset of
non-monolithic wxWidgets builds.

More, they are restricted to use only a proper subset of wxBase functionality:
they are prevented, at compile time, not only from using any graphical user
interface, but also from using the main event loop or global application object
-- though these things are also in wxBase.

They may still use things like strings, files, threads, atomics, and other
utilities that may have modern C++ standard library equivalents.

It would be preferable to use those, but it is not a priority to make those
rewrites.
This commit is contained in:
Paul Licameli 2020-06-20 10:21:27 -04:00
parent 48cacdd961
commit 1f71ef4300
1 changed files with 34 additions and 5 deletions
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39
cmake-proxies/wxWidgets/CMakeLists.txt
View File

@ -1,5 +1,6 @@
add_library( ${TARGET} INTERFACE )
add_library( wxBase INTERFACE )
add_library( ${symbol} ALIAS ${TARGET} )
def_vars()
@ -248,11 +249,39 @@ if( NOT ours )
)
endif()
target_include_directories( ${TARGET} INTERFACE ${INCLUDES} )
target_compile_definitions( ${TARGET} INTERFACE ${DEFINES} )
target_compile_options( ${TARGET} INTERFACE ${COPTS} )
target_link_directories( ${TARGET} INTERFACE ${LINKDIRS} )
target_link_libraries( ${TARGET} INTERFACE ${LIBRARIES} )
foreach( target "${TARGET}" wxBase )
target_include_directories( ${target} INTERFACE ${INCLUDES} )
target_compile_definitions( ${target} INTERFACE ${DEFINES} )
target_compile_options( ${target} INTERFACE ${COPTS} )
target_link_directories( ${target} INTERFACE ${LINKDIRS} )
target_link_libraries( ${target} INTERFACE ${LIBRARIES} )
endforeach()
# wxBase exposes only the GUI-less subset of full wxWidgets
# Also prohibit use of some other headers by pre-defining their include guards
# wxUSE_GUI=0 doesn't exclude all of wxCore dependency, and the application
# object and event loops are in wxBase, but we want to exclude their use too
target_compile_definitions( wxBase INTERFACE
"wxUSE_GUI=0"
# Don't use app.h
_WX_APP_H_BASE_
# Don't use evtloop.h
_WX_EVTLOOP_H_
# Don't use image.h
_WX_IMAGE_H
# Don't use colour.h
_WX_COLOUR_H_BASE_
# Don't use brush.h
_WX_BRUSH_H_BASE_
# Don't use pen.h
_WX_PEN_H_BASE_
)
install( TARGETS ${TARGET} DESTINATION ${_LIBDIR} )