[CMake] Implement absl_cc_library as Bazel's cc_library

cc_library
This commit is contained in:
Loo Rong Jie 2018-06-29 08:45:27 +08:00
parent 48cd2c3f35
commit ac533e18db
3 changed files with 179 additions and 95 deletions

View file

@ -62,7 +62,114 @@ function(absl_library)
endif()
endfunction()
#
# CMake function to imitate Bazel's cc_library rule.
#
# Parameters:
# NAME: name of target (see Note)
# HDRS: List of public header files for the library
# SRCS: List of source files for the library
# DEPS: List of other libraries to be linked in to the binary targets
# COPTS: List of private compile options
# DEFINES: List of public defines
# LINKOPTS: List of link options
# VISIBILITY_PUBLIC: Add this so that this library will be exported under absl:: (see Note).
# TESTONLY: When added, this target will only be built if user passes -DBUILD_TESTING=ON to CMake.
#
# Note:
#
# By default, absl_cc_library will always create a library named absl_${NAME},
# which means other targets can only depend this library as absl_${NAME}, not ${NAME}.
# This is to reduce namespace pollution.
#
# absl_cc_library(
# NAME
# awesome_lib
# HDRS
# "a.h"
# SRCS
# "a.cc"
# )
# absl_cc_library(
# NAME
# fantastic_lib
# SRCS
# "b.cc"
# DEPS
# absl_awesome_lib # not "awesome_lib"!
# )
#
# If VISIBILITY_PUBLIC is set, absl_cc_library will also create an alias absl::${NAME}
# for public use.
#
# absl_cc_library(
# NAME
# main_lib
# ...
# VISIBILITY_PUBLIC
# )
#
# User can then use the library as absl::main_lib (although absl_main_lib is defined too).
#
# TODO: Implement "ALWAYSLINK"
function(absl_cc_library)
cmake_parse_arguments(ABSL_CC_LIB
"DISABLE_INSTALL;VISIBILITY_PUBLIC;TESTONLY"
"NAME"
"HDRS;SRCS;COPTS;DEFINES;LINKOPTS;DEPS"
${ARGN}
)
if (NOT ABSL_CC_LIB_TESTONLY OR BUILD_TESTING)
set(_NAME "absl_${ABSL_CC_LIB_NAME}")
string(TOUPPER ${_NAME} _UPPER_NAME)
# Check if this is a header-only library
if (ABSL_CC_LIB_SRCS)
set(_SRCS ${ABSL_CC_LIB_SRCS})
list(FILTER _SRCS INCLUDE REGEX "\.cc$")
list(LENGTH _SRCS ABSL_CC_LIB_SRCS_LEN)
else()
set(ABSL_CC_LIB_SRCS_LEN 0)
endif()
if(ABSL_CC_LIB_SRCS_LEN)
add_library(${_NAME} STATIC ${ABSL_CC_LIB_SRCS} ${ABSL_CC_LIB_HDRS})
else()
set(__dummy_header_only_lib_file "${CMAKE_CURRENT_BINARY_DIR}/${_NAME}_header_only_dummy.cc")
if(NOT EXISTS ${__dummy_header_only_lib_file})
file(WRITE ${__dummy_header_only_lib_file}
"/* generated file for header-only cmake target */
namespace absl {
// single meaningless symbol
void ${_NAME}__header_fakesym() {}
} // namespace absl")
endif()
add_library(${_NAME} ${__dummy_header_only_lib_file} ${ABSL_CC_LIB_HDRS})
endif()
target_compile_options(${_NAME} PRIVATE ${ABSL_COMPILE_CXXFLAGS} ${ABSL_CC_LIB_COPTS})
target_link_libraries(${_NAME}
PUBLIC ${ABSL_CC_LIB_DEPS}
PRIVATE ${ABSL_CC_LIB_LINKOPTS}
)
target_compile_definitions(${_NAME} PUBLIC ${ABSL_CC_LIB_DEFINES})
target_include_directories(${_NAME}
PUBLIC ${ABSL_COMMON_INCLUDE_DIRS}
)
# Add all Abseil targets to a a folder in the IDE for organization.
set_property(TARGET ${_NAME} PROPERTY FOLDER ${ABSL_IDE_FOLDER})
if(ABSL_CC_LIB_VISIBILITY_PUBLIC)
add_library(absl::${ABSL_CC_LIB_NAME} ALIAS ${_NAME})
endif()
endif()
endfunction()
#
# header only virtual target creation

View file

@ -99,34 +99,27 @@ absl_library(
throw_delegate
)
if(BUILD_TESTING)
# exception-safety testing library
set(EXCEPTION_SAFETY_TESTING_SRC
absl_cc_library(
NAME
exception_safety_testing
HDRS
"internal/exception_safety_testing.h"
SRCS
"internal/exception_safety_testing.cc"
)
set(EXCEPTION_SAFETY_TESTING_PUBLIC_LIBRARIES
${ABSL_TEST_COMMON_LIBRARIES}
COPTS
${ABSL_EXCEPTIONS_FLAG}
DEPS
absl::base
absl::memory
absl::meta
absl::strings
absl::optional
gtest
TESTONLY
)
absl_library(
TARGET
absl_base_internal_exception_safety_testing
SOURCES
${EXCEPTION_SAFETY_TESTING_SRC}
PUBLIC_LIBRARIES
${EXCEPTION_SAFETY_TESTING_PUBLIC_LIBRARIES}
PRIVATE_COMPILE_FLAGS
${ABSL_EXCEPTIONS_FLAG}
)
endif()
# dynamic_annotations library
set(DYNAMIC_ANNOTATIONS_SRC "dynamic_annotations.cc")
@ -368,7 +361,7 @@ absl_test(
set(EXCEPTION_SAFETY_TESTING_TEST_SRC "exception_safety_testing_test.cc")
set(EXCEPTION_SAFETY_TESTING_TEST_PUBLIC_LIBRARIES
absl::base
absl_base_internal_exception_safety_testing
absl_exception_safety_testing
absl::memory
absl::meta
absl::strings

View file

@ -14,8 +14,10 @@
# limitations under the License.
#
list(APPEND STRINGS_PUBLIC_HEADERS
absl_cc_library(
NAME
strings
HDRS
"ascii.h"
"charconv.h"
"escaping.h"
@ -28,35 +30,26 @@ list(APPEND STRINGS_PUBLIC_HEADERS
"str_replace.h"
"str_split.h"
"substitute.h"
)
list(APPEND STRINGS_INTERNAL_HEADERS
SRCS
"ascii.cc"
"charconv.cc"
"escaping.cc"
"internal/bits.h"
"internal/char_map.h"
"internal/charconv_bigint.cc"
"internal/charconv_bigint.h"
"internal/charconv_parse.cc"
"internal/charconv_parse.h"
"internal/memutil.cc"
"internal/memutil.h"
"internal/ostringstream.cc"
"internal/ostringstream.h"
"internal/resize_uninitialized.h"
"internal/stl_type_traits.h"
"internal/str_join_internal.h"
"internal/str_split_internal.h"
"internal/utf8.h"
)
# add string library
list(APPEND STRINGS_SRC
"ascii.cc"
"charconv.cc"
"escaping.cc"
"internal/charconv_bigint.cc"
"internal/charconv_parse.cc"
"internal/memutil.cc"
"internal/memutil.h"
"internal/utf8.cc"
"internal/ostringstream.cc"
"internal/utf8.h"
"match.cc"
"numbers.cc"
"str_cat.cc"
@ -64,37 +57,28 @@ list(APPEND STRINGS_SRC
"str_split.cc"
"string_view.cc"
"substitute.cc"
${STRINGS_PUBLIC_HEADERS}
${STRINGS_INTERNAL_HEADERS}
)
set(STRINGS_PUBLIC_LIBRARIES absl::base absl_throw_delegate)
absl_library(
TARGET
absl_strings
SOURCES
${STRINGS_SRC}
PUBLIC_LIBRARIES
${STRINGS_PUBLIC_LIBRARIES}
EXPORT_NAME
strings
DEPS
absl::base
absl_throw_delegate
VISIBILITY_PUBLIC
)
# add str_format library
absl_header_library(
TARGET
absl_str_format
PUBLIC_LIBRARIES
str_format_internal
EXPORT_NAME
absl_cc_library(
NAME
str_format
HDRS
"str_format.h"
DEPS
absl_str_format_internal
VISIBILITY_PUBLIC
)
# str_format_internal
absl_library(
TARGET
absl_cc_library(
NAME
str_format_internal
SOURCES
SRCS
"internal/str_format/arg.cc"
"internal/str_format/bind.cc"
"internal/str_format/extension.cc"
@ -108,7 +92,7 @@ absl_library(
"internal/str_format/float_conversion.h"
"internal/str_format/output.h"
"internal/str_format/parser.h"
PUBLIC_LIBRARIES
DEPS
str_format_extension_internal
absl::strings
absl::base
@ -415,7 +399,7 @@ absl_test(
SOURCES
"internal/str_format/bind_test.cc"
PUBLIC_LIBRARIES
str_format_internal
absl_str_format_internal
)
# test str_format_checker_test
@ -435,7 +419,7 @@ absl_test(
SOURCES
"internal/str_format/convert_test.cc"
PUBLIC_LIBRARIES
str_format_internal
absl_str_format_internal
absl::numeric
)
@ -456,7 +440,7 @@ absl_test(
SOURCES
"internal/str_format/parser_test.cc"
PUBLIC_LIBRARIES
str_format_internal
absl_str_format_internal
absl::base
)