[CMake] Implement absl_cc_library as Bazel's cc_library
cc_library
This commit is contained in:
Loo Rong Jie
parent
48cd2c3f35
commit
ac533e18db
3 changed files with 179 additions and 95 deletions
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@ -62,7 +62,114 @@ function(absl_library)
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endif()
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endfunction()
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#
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# CMake function to imitate Bazel's cc_library rule.
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#
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# Parameters:
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# NAME: name of target (see Note)
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# HDRS: List of public header files for the library
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# SRCS: List of source files for the library
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# DEPS: List of other libraries to be linked in to the binary targets
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# COPTS: List of private compile options
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# DEFINES: List of public defines
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# LINKOPTS: List of link options
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# VISIBILITY_PUBLIC: Add this so that this library will be exported under absl:: (see Note).
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# TESTONLY: When added, this target will only be built if user passes -DBUILD_TESTING=ON to CMake.
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#
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# Note:
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#
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# By default, absl_cc_library will always create a library named absl_${NAME},
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# which means other targets can only depend this library as absl_${NAME}, not ${NAME}.
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# This is to reduce namespace pollution.
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#
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# absl_cc_library(
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# NAME
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# awesome_lib
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# HDRS
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# "a.h"
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# SRCS
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# "a.cc"
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# )
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# absl_cc_library(
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# NAME
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# fantastic_lib
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# SRCS
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# "b.cc"
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# DEPS
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# absl_awesome_lib # not "awesome_lib"!
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# )
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#
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# If VISIBILITY_PUBLIC is set, absl_cc_library will also create an alias absl::${NAME}
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# for public use.
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#
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# absl_cc_library(
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# NAME
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# main_lib
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# ...
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# VISIBILITY_PUBLIC
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# )
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#
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# User can then use the library as absl::main_lib (although absl_main_lib is defined too).
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#
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# TODO: Implement "ALWAYSLINK"
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function(absl_cc_library)
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cmake_parse_arguments(ABSL_CC_LIB
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"DISABLE_INSTALL;VISIBILITY_PUBLIC;TESTONLY"
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"NAME"
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"HDRS;SRCS;COPTS;DEFINES;LINKOPTS;DEPS"
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${ARGN}
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)
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if (NOT ABSL_CC_LIB_TESTONLY OR BUILD_TESTING)
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set(_NAME "absl_${ABSL_CC_LIB_NAME}")
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string(TOUPPER ${_NAME} _UPPER_NAME)
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# Check if this is a header-only library
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if (ABSL_CC_LIB_SRCS)
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set(_SRCS ${ABSL_CC_LIB_SRCS})
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list(FILTER _SRCS INCLUDE REGEX "\.cc$")
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list(LENGTH _SRCS ABSL_CC_LIB_SRCS_LEN)
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else()
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set(ABSL_CC_LIB_SRCS_LEN 0)
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endif()
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if(ABSL_CC_LIB_SRCS_LEN)
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add_library(${_NAME} STATIC ${ABSL_CC_LIB_SRCS} ${ABSL_CC_LIB_HDRS})
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else()
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set(__dummy_header_only_lib_file "${CMAKE_CURRENT_BINARY_DIR}/${_NAME}_header_only_dummy.cc")
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if(NOT EXISTS ${__dummy_header_only_lib_file})
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file(WRITE ${__dummy_header_only_lib_file}
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"/* generated file for header-only cmake target */
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namespace absl {
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// single meaningless symbol
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void ${_NAME}__header_fakesym() {}
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} // namespace absl")
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endif()
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add_library(${_NAME} ${__dummy_header_only_lib_file} ${ABSL_CC_LIB_HDRS})
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endif()
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target_compile_options(${_NAME} PRIVATE ${ABSL_COMPILE_CXXFLAGS} ${ABSL_CC_LIB_COPTS})
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target_link_libraries(${_NAME}
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PUBLIC ${ABSL_CC_LIB_DEPS}
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PRIVATE ${ABSL_CC_LIB_LINKOPTS}
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)
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target_compile_definitions(${_NAME} PUBLIC ${ABSL_CC_LIB_DEFINES})
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target_include_directories(${_NAME}
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PUBLIC ${ABSL_COMMON_INCLUDE_DIRS}
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)
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# Add all Abseil targets to a a folder in the IDE for organization.
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set_property(TARGET ${_NAME} PROPERTY FOLDER ${ABSL_IDE_FOLDER})
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if(ABSL_CC_LIB_VISIBILITY_PUBLIC)
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add_library(absl::${ABSL_CC_LIB_NAME} ALIAS ${_NAME})
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endif()
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endif()
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endfunction()
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#
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# header only virtual target creation
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@ -99,34 +99,27 @@ absl_library(
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throw_delegate
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)
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if(BUILD_TESTING)
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# exception-safety testing library
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set(EXCEPTION_SAFETY_TESTING_SRC
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absl_cc_library(
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NAME
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exception_safety_testing
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HDRS
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"internal/exception_safety_testing.h"
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SRCS
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"internal/exception_safety_testing.cc"
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)
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set(EXCEPTION_SAFETY_TESTING_PUBLIC_LIBRARIES
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${ABSL_TEST_COMMON_LIBRARIES}
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COPTS
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${ABSL_EXCEPTIONS_FLAG}
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DEPS
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absl::base
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absl::memory
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absl::meta
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absl::strings
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absl::optional
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gtest
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TESTONLY
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)
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absl_library(
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TARGET
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absl_base_internal_exception_safety_testing
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SOURCES
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${EXCEPTION_SAFETY_TESTING_SRC}
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PUBLIC_LIBRARIES
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${EXCEPTION_SAFETY_TESTING_PUBLIC_LIBRARIES}
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PRIVATE_COMPILE_FLAGS
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${ABSL_EXCEPTIONS_FLAG}
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)
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endif()
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# dynamic_annotations library
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set(DYNAMIC_ANNOTATIONS_SRC "dynamic_annotations.cc")
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@ -368,7 +361,7 @@ absl_test(
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set(EXCEPTION_SAFETY_TESTING_TEST_SRC "exception_safety_testing_test.cc")
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set(EXCEPTION_SAFETY_TESTING_TEST_PUBLIC_LIBRARIES
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absl::base
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absl_base_internal_exception_safety_testing
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absl_exception_safety_testing
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absl::memory
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absl::meta
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absl::strings
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@ -14,8 +14,10 @@
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# limitations under the License.
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#
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list(APPEND STRINGS_PUBLIC_HEADERS
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absl_cc_library(
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NAME
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strings
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HDRS
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"ascii.h"
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"charconv.h"
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"escaping.h"
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@ -28,35 +30,26 @@ list(APPEND STRINGS_PUBLIC_HEADERS
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"str_replace.h"
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"str_split.h"
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"substitute.h"
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)
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list(APPEND STRINGS_INTERNAL_HEADERS
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SRCS
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"ascii.cc"
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"charconv.cc"
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"escaping.cc"
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"internal/bits.h"
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"internal/char_map.h"
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"internal/charconv_bigint.cc"
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"internal/charconv_bigint.h"
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"internal/charconv_parse.cc"
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"internal/charconv_parse.h"
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"internal/memutil.cc"
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"internal/memutil.h"
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"internal/ostringstream.cc"
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"internal/ostringstream.h"
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"internal/resize_uninitialized.h"
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"internal/stl_type_traits.h"
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"internal/str_join_internal.h"
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"internal/str_split_internal.h"
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"internal/utf8.h"
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)
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# add string library
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list(APPEND STRINGS_SRC
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"ascii.cc"
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"charconv.cc"
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"escaping.cc"
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"internal/charconv_bigint.cc"
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"internal/charconv_parse.cc"
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"internal/memutil.cc"
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"internal/memutil.h"
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"internal/utf8.cc"
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"internal/ostringstream.cc"
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"internal/utf8.h"
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"match.cc"
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"numbers.cc"
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"str_cat.cc"
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@ -64,37 +57,28 @@ list(APPEND STRINGS_SRC
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"str_split.cc"
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"string_view.cc"
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"substitute.cc"
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${STRINGS_PUBLIC_HEADERS}
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${STRINGS_INTERNAL_HEADERS}
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)
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set(STRINGS_PUBLIC_LIBRARIES absl::base absl_throw_delegate)
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absl_library(
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TARGET
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absl_strings
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SOURCES
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${STRINGS_SRC}
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PUBLIC_LIBRARIES
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${STRINGS_PUBLIC_LIBRARIES}
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EXPORT_NAME
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strings
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DEPS
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absl::base
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absl_throw_delegate
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VISIBILITY_PUBLIC
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)
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# add str_format library
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absl_header_library(
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TARGET
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absl_str_format
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PUBLIC_LIBRARIES
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str_format_internal
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EXPORT_NAME
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absl_cc_library(
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NAME
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str_format
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HDRS
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"str_format.h"
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DEPS
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absl_str_format_internal
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VISIBILITY_PUBLIC
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)
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# str_format_internal
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absl_library(
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TARGET
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absl_cc_library(
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NAME
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str_format_internal
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SOURCES
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SRCS
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"internal/str_format/arg.cc"
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"internal/str_format/bind.cc"
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"internal/str_format/extension.cc"
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@ -108,7 +92,7 @@ absl_library(
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"internal/str_format/float_conversion.h"
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"internal/str_format/output.h"
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"internal/str_format/parser.h"
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PUBLIC_LIBRARIES
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DEPS
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str_format_extension_internal
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absl::strings
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absl::base
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@ -415,7 +399,7 @@ absl_test(
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SOURCES
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"internal/str_format/bind_test.cc"
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PUBLIC_LIBRARIES
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str_format_internal
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absl_str_format_internal
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)
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# test str_format_checker_test
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@ -435,7 +419,7 @@ absl_test(
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SOURCES
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"internal/str_format/convert_test.cc"
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PUBLIC_LIBRARIES
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str_format_internal
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absl_str_format_internal
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absl::numeric
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)
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@ -456,7 +440,7 @@ absl_test(
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SOURCES
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"internal/str_format/parser_test.cc"
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PUBLIC_LIBRARIES
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str_format_internal
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absl_str_format_internal
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absl::base
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)
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