Mercurial > repos > rliterman > csp2
diff CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/lib/cmake/CapnProto/CapnProtoTargets.cmake @ 68:5028fdace37b
planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
author | jpayne |
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date | Tue, 18 Mar 2025 16:23:26 -0400 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/lib/cmake/CapnProto/CapnProtoTargets.cmake Tue Mar 18 16:23:26 2025 -0400 @@ -0,0 +1,221 @@ +# This CMake script adds imported targets for each shared library and executable distributed by +# Cap'n Proto's autotools build. +# +# This file IS NOT USED by the CMake build! The CMake build generates its own version of this script +# from its set of exported targets. I used such a generated script as a reference when writing this +# one. +# +# The set of library targets provided by this script is automatically generated from the list of .pc +# files maintained in configure.ac. The set of executable targets is hard-coded in this file. +# +# You can request that this script print debugging information by invoking cmake with: +# +# -DCapnProto_DEBUG=ON +# +# TODO(someday): Distinguish between debug and release builds. I.e., set IMPORTED_LOCATION_RELEASE +# rather than IMPORTED_LOCATION, etc., if this installation was configured as a release build. But +# how do we tell? grep for -g in CXXFLAGS? + +if(CMAKE_VERSION VERSION_LESS 3.1) + message(FATAL_ERROR "CMake >= 3.1 required") +endif() + +set(forwarded_config_flags) +if(CapnProto_FIND_QUIETLY) + list(APPEND forwarded_config_flags QUIET) +endif() +if(CapnProto_FIND_REQUIRED) + list(APPEND forwarded_config_flags REQUIRED) +endif() +# If the consuming project called find_package(CapnProto) with the QUIET or REQUIRED flags, forward +# them to calls to find_package(PkgConfig) and pkg_check_modules(). Note that find_dependency() +# would do this for us in the former case, but there is no such forwarding wrapper for +# pkg_check_modules(). + +find_package(PkgConfig ${forwarded_config_flags}) +if(NOT ${PkgConfig_FOUND}) + # If we're here, the REQUIRED flag must not have been passed, else we would have had a fatal + # error. Nevertheless, a diagnostic for this case is probably nice. + if(NOT CapnProto_FIND_QUIETLY) + message(WARNING "pkg-config cannot be found") + endif() + set(CapnProto_FOUND OFF) + return() +endif() + +function(_capnp_import_pkg_config_target target) + # Add an imported library target named CapnProto::${target}, using the output of various + # invocations of `pkg-config ${target}`. The generated imported library target tries to mimic the + # behavior of a real CMake-generated imported target as closely as possible. + # + # Usage: _capnp_import_pkg_config_target(target <all Cap'n Proto targets>) + + set(all_targets ${ARGN}) + + pkg_check_modules(${target} ${forwarded_config_flags} ${target}) + + if(NOT ${${target}_FOUND}) + if(NOT CapnProto_FIND_QUIETLY) + message(WARNING "CapnProtoConfig.cmake was configured to search for ${target}.pc, but pkg-config cannot find it. Ignoring this target.") + endif() + return() + endif() + + if(CapnProto_DEBUG) + # Dump the information pkg-config discovered. + foreach(var VERSION LIBRARY_DIRS LIBRARIES LDFLAGS_OTHER INCLUDE_DIRS CFLAGS_OTHER) + message(STATUS "${target}_${var} = ${${target}_${var}}") + endforeach() + endif() + + if(NOT ${${target}_VERSION} VERSION_EQUAL ${CapnProto_VERSION}) + if(NOT CapnProto_FIND_QUIETLY) + message(WARNING "CapnProtoConfig.cmake was configured to search for version ${CapnProto_VERSION}, but ${target} version ${${target}_VERSION} was found. Ignoring this target.") + endif() + return() + endif() + + # Make an educated guess as to what the target's .so and .a filenames must be. + set(target_name_shared + ${CMAKE_SHARED_LIBRARY_PREFIX}${target}-${CapnProto_VERSION}${CMAKE_SHARED_LIBRARY_SUFFIX}) + set(target_name_static + ${CMAKE_STATIC_LIBRARY_PREFIX}${target}${CMAKE_STATIC_LIBRARY_SUFFIX}) + + # Find the actual target's file. find_library() sets a cache variable, so I made the variable name + # unique-ish. + find_library(CapnProto_${target}_IMPORTED_LOCATION + NAMES ${target_name_shared} ${target_name_static} # prefer libfoo-version.so over libfoo.a + PATHS ${${target}_LIBRARY_DIRS} + NO_DEFAULT_PATH + ) + # If the installed version of Cap'n Proto is in a system location, pkg-config will not have filled + # in ${target}_LIBRARY_DIRS. To account for this, fall back to a regular search. + find_library(CapnProto_${target}_IMPORTED_LOCATION + NAMES ${target_name_shared} ${target_name_static} # prefer libfoo-version.so over libfoo.a + ) + + if(NOT CapnProto_${target}_IMPORTED_LOCATION) + # Not an error if the library doesn't exist -- we may have found a lite mode installation. + if(CapnProto_DEBUG) + message(STATUS "${target} library does not exist") + endif() + return() + endif() + + # Record some information about this target -- shared versus static, location and soname -- which + # we'll use to build our imported target later. + + set(target_location ${CapnProto_${target}_IMPORTED_LOCATION}) + get_filename_component(target_name "${target_location}" NAME) + + set(target_type STATIC) + set(imported_soname_property) + if(target_name STREQUAL ${target_name_shared}) + set(target_type SHARED) + set(imported_soname_property IMPORTED_SONAME ${target_name}) + endif() + + # Each library dependency of the target is either the target itself, a sibling Cap'n Proto + # library, or a system library. We ignore the first case by removing this target from the + # dependencies. The remaining dependencies are either passed through or, if they are a sibling + # Cap'n Proto library, prefixed with `CapnProto::`. + set(dependencies ${${target}_LIBRARIES}) + list(REMOVE_ITEM dependencies ${target}) + set(target_interface_libs) + foreach(dependency ${dependencies}) + list(FIND all_targets ${dependency} target_index) + # TODO(cleanup): CMake >= 3.3 lets us write: `if(NOT ${dependency} IN_LIST all_targets)` + if(target_index EQUAL -1) + list(APPEND target_interface_libs ${dependency}) + else() + list(APPEND target_interface_libs CapnProto::${dependency}) + endif() + endforeach() + + add_library(CapnProto::${target} ${target_type} IMPORTED) + set_target_properties(CapnProto::${target} PROPERTIES + ${imported_soname_property} + IMPORTED_LOCATION "${target_location}" + # TODO(cleanup): Use cxx_std_14 once it's safe to require cmake 3.8. + INTERFACE_COMPILE_FEATURES "cxx_generic_lambdas" + INTERFACE_COMPILE_OPTIONS "${${target}_CFLAGS_OTHER}" + INTERFACE_INCLUDE_DIRECTORIES "${${target}_INCLUDE_DIRS}" + + # I'm dumping LDFLAGS_OTHER in with the libraries because there exists no + # INTERFACE_LINK_OPTIONS. See https://gitlab.kitware.com/cmake/cmake/issues/16543. + INTERFACE_LINK_LIBRARIES "${target_interface_libs};${${target}_LDFLAGS_OTHER}" + ) + + if(CapnProto_DEBUG) + # Dump all the properties we generated for the imported target. + foreach(prop + IMPORTED_LOCATION + IMPORTED_SONAME + INTERFACE_COMPILE_FEATURES + INTERFACE_COMPILE_OPTIONS + INTERFACE_INCLUDE_DIRECTORIES + INTERFACE_LINK_LIBRARIES) + get_target_property(value CapnProto::${target} ${prop}) + message(STATUS "CapnProto::${target} ${prop} = ${value}") + endforeach() + endif() +endfunction() + +# ======================================================================================== +# Imported library targets + +# Build a list of targets to search for from the list of .pc files. +# I.e. [somewhere/foo.pc, somewhere/bar.pc] -> [foo, bar] +set(library_targets) +foreach(filename ${CAPNP_PKG_CONFIG_FILES}) + get_filename_component(target ${filename} NAME_WE) + list(APPEND library_targets ${target}) +endforeach() + +# Try to add an imported library target CapnProto::foo for each foo.pc distributed with Cap'n Proto. +foreach(target ${library_targets}) + _capnp_import_pkg_config_target(${target} ${library_targets}) +endforeach() + +# Handle lite-mode and no libraries found cases. It is tempting to set a CapnProto_LITE variable +# here, but the real CMake-generated implementation does no such thing -- we'd need to set it in +# CapnProtoConfig.cmake.in itself. +if(TARGET CapnProto::capnp AND TARGET CapnProto::kj) + if(NOT TARGET CapnProto::capnp-rpc) + if(NOT CapnProto_FIND_QUIETLY) + message(STATUS "Found an installation of Cap'n Proto lite. Executable and library targets beyond libkj and libcapnp will be unavailable.") + endif() + # Lite mode doesn't include the executables, so return here. + return() + endif() +else() + # If we didn't even find capnp or kj, then we didn't find anything usable. + set(CapnProto_FOUND OFF) + return() +endif() + +# ======================================================================================== +# Imported executable targets + +get_filename_component(_IMPORT_PREFIX "${CMAKE_CURRENT_LIST_FILE}" PATH) +get_filename_component(_IMPORT_PREFIX "${_IMPORT_PREFIX}" PATH) +get_filename_component(_IMPORT_PREFIX "${_IMPORT_PREFIX}" PATH) +get_filename_component(_IMPORT_PREFIX "${_IMPORT_PREFIX}" PATH) + +# Add executable targets for the capnp compiler and plugins. This list must be kept manually in sync +# with the rest of the project. + +add_executable(CapnProto::capnp_tool IMPORTED) +set_target_properties(CapnProto::capnp_tool PROPERTIES + IMPORTED_LOCATION "${_IMPORT_PREFIX}/bin/capnp${CMAKE_EXECUTABLE_SUFFIX}" +) + +add_executable(CapnProto::capnpc_cpp IMPORTED) +set_target_properties(CapnProto::capnpc_cpp PROPERTIES + IMPORTED_LOCATION "${_IMPORT_PREFIX}/bin/capnpc-c++${CMAKE_EXECUTABLE_SUFFIX}" +) + +add_executable(CapnProto::capnpc_capnp IMPORTED) +set_target_properties(CapnProto::capnpc_capnp PROPERTIES + IMPORTED_LOCATION "${_IMPORT_PREFIX}/bin/capnpc-capnp${CMAKE_EXECUTABLE_SUFFIX}" +)