mirror of
https://github.com/panda3d/panda3d.git
synced 2025-10-04 02:42:49 -04:00
1520d712d4
Instead, let's use a PKG::PKGNAME interface library, which simplifies the linking and also allows us to use imported libraries from find_package in the future.
230 lines
6.8 KiB
CMake
230 lines
6.8 KiB
CMake
# Filename: PackageConfig.cmake
|
|
#
|
|
# This module defines functions which find and configure libraries
|
|
# and packages for Panda3D.
|
|
#
|
|
# Assumes an attempt to find the package has already been made with
|
|
# find_package(). (i.e. relies on packagename_FOUND variable)
|
|
#
|
|
# The packages are added as imported/interface libraries in the PKG::
|
|
# namespace. If the package is not found (or disabled by the user),
|
|
# a dummy package will be created instead. Therefore, it is safe
|
|
# to link against the PKG::PACKAGENAME target unconditionally.
|
|
#
|
|
# Function: package_option
|
|
# Usage:
|
|
# package_option(package_name package_doc_string
|
|
# [DEFAULT ON | OFF]
|
|
# [FOUND_AS find_name]
|
|
# [LICENSE license])
|
|
# Examples:
|
|
# package_option(LIBNAME "Enables LIBNAME support." DEFAULT OFF)
|
|
#
|
|
# If no default is given, the default in normal
|
|
# builds is to enable all found third-party packages.
|
|
# In builds for redistribution, there is the additional requirement that
|
|
# the package be suitably-licensed.
|
|
#
|
|
# FOUND_AS indicates the name of the CMake find_package() module, which
|
|
# may differ from Panda3D's internal name for that package.
|
|
#
|
|
#
|
|
# Function: config_package
|
|
# Usage:
|
|
# config_package(package_name "Package description" ["Config summary"])
|
|
# Examples:
|
|
# config_package(OpenAL "OpenAL Audio Output")
|
|
# config_package(ROCKET "Rocket" "without Python bindings")
|
|
#
|
|
#
|
|
# Function: show_packages
|
|
# Usage:
|
|
# show_packages()
|
|
#
|
|
# This prints the package usage report using the information provided in
|
|
# calls to config_package above.
|
|
#
|
|
|
|
#
|
|
# package_option
|
|
#
|
|
# In order to make sure no third-party licenses are inadvertently violated,
|
|
# this imposes a few rules regarding license:
|
|
# 1) If there is no license, no special restrictions.
|
|
# 2) If there is a license, but the build is not flagged for redistribution,
|
|
# no special restrictions.
|
|
# 3) If there is a license, and this is for redistribution, the package is
|
|
# forcibly defaulted off and must be explicitly enabled, unless the license
|
|
# matches a list of licenses suitable for redistribution.
|
|
#
|
|
function(package_option name)
|
|
# Parse the arguments.
|
|
set(command)
|
|
set(default)
|
|
set(found_as "${name}")
|
|
set(license "")
|
|
set(cache_string)
|
|
|
|
foreach(arg ${ARGN})
|
|
if(command STREQUAL "DEFAULT")
|
|
set(default "${arg}")
|
|
set(command)
|
|
|
|
elseif(command STREQUAL "FOUND_AS")
|
|
set(found_as "${arg}")
|
|
set(command)
|
|
|
|
elseif(command STREQUAL "LICENSE")
|
|
set(license "${arg}")
|
|
set(command)
|
|
|
|
elseif(arg STREQUAL "DEFAULT")
|
|
set(command "DEFAULT")
|
|
|
|
elseif(arg STREQUAL "FOUND_AS")
|
|
set(command "FOUND_AS")
|
|
|
|
elseif(arg STREQUAL "LICENSE")
|
|
set(command "LICENSE")
|
|
|
|
else()
|
|
# Yes, a list, because semicolons can be in there, and
|
|
# that gets split up into multiple args, so we have to
|
|
# join it back together here.
|
|
list(APPEND cache_string "${arg}")
|
|
|
|
endif()
|
|
endforeach()
|
|
|
|
if(command STREQUAL "DEFAULT")
|
|
message(SEND_ERROR "DEFAULT in package_option takes an argument")
|
|
endif()
|
|
|
|
# If the default is not set, we set it.
|
|
if(NOT DEFINED default)
|
|
if(IS_DIST_BUILD)
|
|
# Accept things that don't have a configured license
|
|
if(license STREQUAL "")
|
|
set(default "${${found_as}_FOUND}")
|
|
|
|
else()
|
|
list(FIND PANDA_DIST_USE_LICENSES ${license} license_index)
|
|
# If the license isn't in the accept listed, don't use the package
|
|
if(${license_index} EQUAL "-1")
|
|
set(default OFF)
|
|
else()
|
|
set(default "${${found_as}_FOUND}")
|
|
endif()
|
|
endif()
|
|
|
|
elseif(IS_MINSIZE_BUILD)
|
|
set(default OFF)
|
|
|
|
else()
|
|
set(default "${${found_as}_FOUND}")
|
|
|
|
endif()
|
|
endif()
|
|
|
|
# If it was set by the user but not found, display an error.
|
|
if(HAVE_${name} AND NOT ${found_as}_FOUND)
|
|
message(SEND_ERROR "NOT FOUND: ${name}. Disable HAVE_${name} to continue.")
|
|
endif()
|
|
|
|
# Prevent the function from being called twice.
|
|
# This would indicate a cmake error.
|
|
if(PANDA_DID_SET_OPTION_${name})
|
|
message(SEND_ERROR "package_option(${name}) was called twice.
|
|
This is a bug in the cmake build scripts.")
|
|
else()
|
|
set(PANDA_DID_SET_OPTION_${name} TRUE PARENT_SCOPE)
|
|
endif()
|
|
|
|
set(PANDA_PACKAGE_DEFAULT_${name} "${default}" PARENT_SCOPE)
|
|
|
|
# Create the option.
|
|
option("HAVE_${name}" "${cache_string}" "${default}")
|
|
|
|
# Create the library if the package is available.
|
|
add_library(PKG::${name} INTERFACE IMPORTED GLOBAL)
|
|
|
|
if(HAVE_${name})
|
|
if(${found_as}_INCLUDE_DIRS)
|
|
set(includes ${${found_as}_INCLUDE_DIRS})
|
|
else()
|
|
set(includes "${${found_as}_INCLUDE_DIR}")
|
|
endif()
|
|
if(${found_as}_LIBRARIES)
|
|
set(libs ${${found_as}_LIBRARIES})
|
|
else()
|
|
set(libs "${${found_as}_LIBRARY}")
|
|
endif()
|
|
|
|
target_link_libraries(PKG::${name} INTERFACE ${libs})
|
|
|
|
# This is gross, but we actually want to hide package include directories
|
|
# from Interrogate to make sure it relies on parser-inc instead, so we'll
|
|
# use some generator expressions to do that.
|
|
set_target_properties(PKG::${name} PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
|
|
"$<$<NOT:$<BOOL:$<TARGET_PROPERTY:IS_INTERROGATE>>>:${includes}>")
|
|
endif()
|
|
endfunction(package_option)
|
|
|
|
set(_ALL_CONFIG_PACKAGES CACHE INTERNAL "Internal variable")
|
|
|
|
#
|
|
# config_package
|
|
#
|
|
function(config_package name desc)
|
|
set(note "")
|
|
foreach(arg ${ARGN})
|
|
set(note "${arg}")
|
|
endforeach()
|
|
|
|
if(NOT PANDA_DID_SET_OPTION_${name})
|
|
message(SEND_ERROR "config_package(${name}) was called before package_option(${name}).
|
|
This is a bug in the cmake build scripts.")
|
|
endif()
|
|
|
|
list(FIND _ALL_CONFIG_PACKAGES "${name}" called_twice)
|
|
if(called_twice GREATER -1)
|
|
message(SEND_ERROR "config_package(${name}) was called twice.
|
|
This is a bug in the cmake build scripts.")
|
|
else()
|
|
list(APPEND _ALL_CONFIG_PACKAGES "${name}")
|
|
set(_ALL_CONFIG_PACKAGES "${_ALL_CONFIG_PACKAGES}" CACHE INTERNAL "Internal variable")
|
|
endif()
|
|
|
|
set(PANDA_PACKAGE_DESC_${name} "${desc}" PARENT_SCOPE)
|
|
set(PANDA_PACKAGE_NOTE_${name} "${note}" PARENT_SCOPE)
|
|
endfunction()
|
|
|
|
#
|
|
# show_packages
|
|
#
|
|
function(show_packages)
|
|
message("")
|
|
message("Configuring support for the following optional third-party packages:")
|
|
|
|
foreach(package ${_ALL_CONFIG_PACKAGES})
|
|
set(desc "${PANDA_PACKAGE_DESC_${package}}")
|
|
set(note "${PANDA_PACKAGE_NOTE_${package}}")
|
|
if(HAVE_${package})
|
|
if(NOT note STREQUAL "")
|
|
message("+ ${desc} (${note})")
|
|
else()
|
|
message("+ ${desc}")
|
|
endif()
|
|
else()
|
|
if(NOT ${package}_FOUND)
|
|
set(reason "not found")
|
|
elseif(NOT PANDA_PACKAGE_DEFAULT_${package})
|
|
set(reason "not requested")
|
|
else()
|
|
set(reason "disabled")
|
|
endif()
|
|
message("- ${desc} (${reason})")
|
|
endif()
|
|
endforeach()
|
|
endfunction()
|