Cemu/cmake/FindwxWidgets.cmake
Andrea Pappacoda 9fabba1eed
build: rework how dependencies are linked
This is a big rework of how dependencies are handled internally. All the
calls to CMake functions changing directory-wide properties that were
previously used to link to external and internal dependencies have been
replaced with their "target_" counterparts. This makes it possible to
express more clearly the relationships between different targets and
should also make the build script more robust in general.

In doing this, I've also made it possible to link to system libraries if
so desired; the versioned calls to find_package() will make sure that
the found dependencies are compatible with the ones required by Cemu,
and will abort the build otherwise.

Cemu's internal targets are deeply interconnected, making it hard to
fully benefit from a target-based approach. Nonetheless, I did my best
to mark PUBLIC dependencies as such, for example when an internal target
like CemuGui exposes a dependency as part of its API, i.e. it includes
a third party header in one of its public headers.

This will significantly help with improving the build experience on
Linux, thus helping a bit with the resolution of #1.
2022-08-29 00:33:44 +02:00

49 lines
1.7 KiB
CMake

# SPDX-FileCopyrightText: 2022 Andrea Pappacoda <andrea@pappacoda.it>
# SPDX-License-Identifier: ISC
include(FindPackageHandleStandardArgs)
find_package(wxWidgets CONFIG COMPONENTS ${wxWidgets_FIND_COMPONENTS})
if (wxWidgets_FOUND)
# Use upstream wxWidgetsConfig.cmake if possible
find_package_handle_standard_args(wxWidgets CONFIG_MODE)
else()
# Fall back to CMake's FindwxWidgets
# Temporarily unset CMAKE_MODULE_PATH to avoid calling the current find
# module recursively
set(_tmp_module_path "${CMAKE_MODULE_PATH}")
set(CMAKE_MODULE_PATH "")
find_package(wxWidgets MODULE QUIET COMPONENTS ${wxWidgets_FIND_COMPONENTS})
set(CMAKE_MODULE_PATH "${_tmp_module_path}")
unset(_tmp_module_path)
if (wxWidgets_FOUND)
add_library(wx::base IMPORTED INTERFACE)
target_include_directories(wx::base INTERFACE ${wxWidgets_INCLUDE_DIRS})
target_link_libraries(wx::base INTERFACE ${wxWidgets_LIBRARIES})
target_link_directories(wx::base INTERFACE ${wxWidgets_LIBRARY_DIRS})
target_compile_definitions(wx::base INTERFACE ${wxWidgets_DEFINITIONS})
target_compile_options(wx::base INTERFACE ${wxWidgets_CXX_FLAGS})
# FindwxWidgets sets everything into a single set of variables, so it is
# impossible to tell what libraries are required for what component.
# To be compatible with wxWidgetsConfig, we create an alias for each
# component so that the user can still use target_link_libraries(wx::gl)
foreach(component ${wxWidgets_FIND_COMPONENTS})
if (NOT component STREQUAL "base")
# don't alias base to itself
add_library(wx::${component} ALIAS wx::base)
endif()
endforeach()
endif()
find_package_handle_standard_args(wxWidgets
REQUIRED_VARS
wxWidgets_LIBRARIES
wxWidgets_FOUND
VERSION_VAR
wxWidgets_VERSION_STRING
)
endif()