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# This is a helper function and not a build rule. It is to be used by the
# various test rules to generate the full list of object files
# recursively produced by "add_entrypoint_object" and "add_object_library"
# targets.
# Usage:
# get_object_files_for_test(<result var>
# <skipped_entrypoints_var>
# <target0> [<target1> ...])
#
# The list of object files is collected in <result_var>.
# If skipped entrypoints were found, then <skipped_entrypoints_var> is
# set to a true value.
# targetN is either an "add_entrypoint_target" target or an
# "add_object_library" target.
function(get_object_files_for_test result skipped_entrypoints_list)
set(object_files "")
set(skipped_list "")
foreach(dep IN LISTS ARGN)
get_target_property(dep_type ${dep} "TARGET_TYPE")
if(NOT dep_type)
# Target for which TARGET_TYPE property is not set do not
# provide any object files.
continue()
endif()
if(${dep_type} STREQUAL ${OBJECT_LIBRARY_TARGET_TYPE})
get_target_property(dep_object_files ${dep} "OBJECT_FILES")
if(dep_object_files)
list(APPEND object_files ${dep_object_files})
endif()
elseif(${dep_type} STREQUAL ${ENTRYPOINT_OBJ_TARGET_TYPE})
get_target_property(is_skipped ${dep} "SKIPPED")
if(is_skipped)
list(APPEND skipped_list ${dep})
continue()
endif()
get_target_property(object_file_raw ${dep} "OBJECT_FILE_RAW")
if(object_file_raw)
list(APPEND object_files ${object_file_raw})
endif()
endif()
get_target_property(indirect_deps ${dep} "DEPS")
get_object_files_for_test(
indirect_objfiles indirect_skipped_list ${indirect_deps})
list(APPEND object_files ${indirect_objfiles})
if(indirect_skipped_list)
list(APPEND skipped_list ${indirect_skipped_list})
endif()
endforeach(dep)
list(REMOVE_DUPLICATES object_files)
set(${result} ${object_files} PARENT_SCOPE)
list(REMOVE_DUPLICATES skipped_list)
set(${skipped_entrypoints_list} ${skipped_list} PARENT_SCOPE)
endfunction(get_object_files_for_test)
# Rule to add a libc unittest.
# Usage
# add_libc_unittest(
# <target name>
# SUITE <name of the suite this test belongs to>
# SRCS <list of .cpp files for the test>
# HDRS <list of .h files for the test>
# DEPENDS <list of dependencies>
# COMPILE_OPTIONS <list of special compile options for this target>
# )
function(add_libc_unittest target_name)
if(NOT LLVM_INCLUDE_TESTS)
return()
endif()
cmake_parse_arguments(
"LIBC_UNITTEST"
"" # No optional arguments
"SUITE" # Single value arguments
"SRCS;HDRS;DEPENDS;COMPILE_OPTIONS" # Multi-value arguments
${ARGN}
)
if(NOT LIBC_UNITTEST_SRCS)
message(FATAL_ERROR "'add_libc_unittest' target requires a SRCS list of .cpp "
"files.")
endif()
if(NOT LIBC_UNITTEST_DEPENDS)
message(FATAL_ERROR "'add_libc_unittest' target requires a DEPENDS list of "
"'add_entrypoint_object' targets.")
endif()
get_fq_target_name(${target_name} fq_target_name)
get_fq_deps_list(fq_deps_list ${LIBC_UNITTEST_DEPENDS})
get_object_files_for_test(
link_object_files skipped_entrypoints_list ${fq_deps_list})
if(skipped_entrypoints_list)
# If a test is OS/target machine independent, it has to be skipped if the
# OS/target machine combination does not provide any dependent entrypoints.
# If a test is OS/target machine specific, then such a test will live is a
# OS/target machine specific directory and will be skipped at the directory
# level if required.
#
# There can potentially be a setup like this: A unittest is setup for a
# OS/target machine independent object library, which in turn depends on a
# machine specific object library. Such a test would be testing internals of
# the libc and it is assumed that they will be rare in practice. So, they
# can be skipped in the corresponding CMake files using platform specific
# logic. This pattern is followed in the loader tests for example.
#
# Another pattern that is present currently is to detect machine
# capabilities and add entrypoints and tests accordingly. That approach is
# much lower level approach and is independent of the kind of skipping that
# is happening here at the entrypoint level.
set(msg "Skipping unittest ${fq_target_name} as it has missing deps: "
"${skipped_entrypoints_list}.")
message(STATUS ${msg})
add_custom_target(${fq_target_name})
# A post build custom command is used to avoid running the command always.
add_custom_command(
TARGET ${fq_target_name}
POST_BUILD
COMMAND ${CMAKE_COMMAND} -E echo ${msg}
)
return()
endif()
add_executable(
${fq_target_name}
EXCLUDE_FROM_ALL
${LIBC_UNITTEST_SRCS}
${LIBC_UNITTEST_HDRS}
)
target_include_directories(
${fq_target_name}
PRIVATE
${LIBC_SOURCE_DIR}
${LIBC_BUILD_DIR}
${LIBC_BUILD_DIR}/include
)
if(LIBC_UNITTEST_COMPILE_OPTIONS)
target_compile_options(
${target_name}
PRIVATE ${LIBC_UNITTEST_COMPILE_OPTIONS}
)
endif()
target_link_libraries(${fq_target_name} PRIVATE ${link_object_files})
set_target_properties(${fq_target_name}
PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
add_dependencies(
${fq_target_name}
${fq_deps_list}
)
target_link_libraries(${fq_target_name} PRIVATE LibcUnitTest libc_test_utils)
add_custom_command(
TARGET ${fq_target_name}
POST_BUILD
COMMAND $<TARGET_FILE:${fq_target_name}>
)
if(LIBC_UNITTEST_SUITE)
add_dependencies(
${LIBC_UNITTEST_SUITE}
${fq_target_name}
)
endif()
endfunction(add_libc_unittest)
function(add_libc_testsuite suite_name)
add_custom_target(${suite_name})
add_dependencies(check-libc ${suite_name})
endfunction(add_libc_testsuite)
# Rule to add a fuzzer test.
# Usage
# add_libc_fuzzer(
# <target name>
# SRCS <list of .cpp files for the test>
# HDRS <list of .h files for the test>
# DEPENDS <list of dependencies>
# )
function(add_libc_fuzzer target_name)
cmake_parse_arguments(
"LIBC_FUZZER"
"" # No optional arguments
"" # Single value arguments
"SRCS;HDRS;DEPENDS" # Multi-value arguments
${ARGN}
)
if(NOT LIBC_FUZZER_SRCS)
message(FATAL_ERROR "'add_libc_fuzzer' target requires a SRCS list of .cpp "
"files.")
endif()
if(NOT LIBC_FUZZER_DEPENDS)
message(FATAL_ERROR "'add_libc_fuzzer' target requires a DEPENDS list of "
"'add_entrypoint_object' targets.")
endif()
get_fq_target_name(${target_name} fq_target_name)
get_fq_deps_list(fq_deps_list ${LIBC_FUZZER_DEPENDS})
get_object_files_for_test(
link_object_files skipped_entrypoints_list ${fq_deps_list})
if(skipped_entrypoints_list)
set(msg "Skipping fuzzer target ${fq_target_name} as it has missing deps: "
"${skipped_entrypoints_list}.")
message(STATUS ${msg})
add_custom_target(${fq_target_name})
# A post build custom command is used to avoid running the command always.
add_custom_command(
TARGET ${fq_target_name}
POST_BUILD
COMMAND ${CMAKE_COMMAND} -E echo ${msg}
)
return()
endif()
add_executable(
${fq_target_name}
EXCLUDE_FROM_ALL
${LIBC_FUZZER_SRCS}
${LIBC_FUZZER_HDRS}
)
target_include_directories(
${fq_target_name}
PRIVATE
${LIBC_SOURCE_DIR}
${LIBC_BUILD_DIR}
${LIBC_BUILD_DIR}/include
)
target_link_libraries(${fq_target_name} PRIVATE ${link_object_files})
set_target_properties(${fq_target_name}
PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
add_dependencies(
${fq_target_name}
${fq_deps_list}
)
add_dependencies(libc-fuzzer ${fq_target_name})
endfunction(add_libc_fuzzer)
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