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build: add a cmake based build system
This is far from complete, but is sufficient to build a Linux version of libdispatch. It shows what a potential cmake based build system could look like, and if desired can be completed to build all the various flavours with cmake.
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‎CMakeLists.txt

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cmake_minimum_required(VERSION 3.4.3)
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list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules")
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project(dispatch C)
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set(CMAKE_C_VISIBILITY_PRESET hidden)
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include(GNUInstallDirs)
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set(WITH_KQUEUE "" CACHE PATH "Path to kqueue headers")
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set(WITH_BLOCKS_RUNTIME "" CACHE PATH "Path to blocks runtime")
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set(WITH_PTHREAD_WORKQUEUES "" CACHE PATH "Path to pthread-workqueues")
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include(DispatchAppleOptions)
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option(ENABLE_DISPATCH_INIT_CONSTRUCTOR "enable libdispatch_init as a constructor" OFF)
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option(ENABLE_THREAD_LOCAL_STORAGE "enable usage of thread local storage via __thread" OFF)
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if(ENABLE_DISPATCH_INIT_CONSTRUCTOR)
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add_definitions(-DUSE_LIBDISPATCH_INIT_CONSTRUCTOR=1)
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endif()
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if(ENABLE_THREAD_LOCAL_STORAGE)
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add_definitions(-DDISPATCH_USE_THREAD_LOCAL_STORAGE=1)
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endif()
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include(CheckCSourceCompiles)
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include(CheckFunctionExists)
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include(CheckIncludeFiles)
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include(CheckLibraryExists)
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include(CheckSymbolExists)
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check_c_source_compiles(
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"
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#include <features.h>
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#if defined(__GNU_LIBRARY__)
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int main() { return 0; }
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#endif
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"
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_GNU_SOURCE)
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if(_GNU_SOURCE)
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set(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} -D_GNU_SOURCE)
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add_definitions(-D_GNU_SOURCE)
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endif()
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find_library(HAVE_LIBRT NAMES rt)
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if(HAVE_LIBRT)
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set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} rt)
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endif()
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check_function_exists(_pthread_workqueue_init HAVE__PTHREAD_WORKQUEUE_INIT)
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check_function_exists(getprogname HAVE_GETPROGNAME)
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check_function_exists(mach_absolute_time HAVE_MACH_ABSOLUTE_TIME)
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check_function_exists(mach_port_construct HAVE_MACH_PORT_CONSTRUCT)
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check_function_exists(malloc_create_zone HAVE_MALLOC_CREATE_ZONE)
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check_function_exists(pthread_key_init_np HAVE_PTHREAD_KEY_INIT_NP)
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check_function_exists(pthread_main_np HAVE_PTHREAD_MAIN_NP)
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check_function_exists(pthread_workqueue_setdispatch_np HAVE_PTHREAD_WORKQUEUE_SETDISPATCH_NP)
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check_function_exists(strlcpy HAVE_STRLCPY)
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check_function_exists(sysconf HAVE_SYSCONF)
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if(NOT HAVE_STRLCPY AND NOT HAVE_GETPROGNAME)
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include(FindPkgConfig)
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pkg_check_modules(BSD_OVERLAY libbsd-overlay)
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if(BSD_OVERLAY_FOUND)
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set(HAVE_STRLCPY 1)
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set(HAVE_GETPROGNAME 1)
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endif()
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endif()
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check_include_files("TargetConditionals.h" HAVE_TARGETCONDITIONALS_H)
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check_include_files("dlfcn.h" HAVE_DLFCN_H)
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check_include_files("fcntl.h" HAVE_FCNTL_H)
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check_include_files("inttypes.h" HAVE_INTTYPES_H)
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check_include_files("libkern/OSAtomic.h" HAVE_LIBKERN_OSATOMIC_H)
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check_include_files("libkern/OSCrossEndian.h" HAVE_LIBKERN_OSCROSSENDIAN_H)
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check_include_files("libproc_internal.h" HAVE_LIBPROC_INTERNAL_H)
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check_include_files("mach/mach.h" HAVE_MACH)
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if(HAVE_MACH)
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set(__DARWIN_NON_CANCELABLE 1)
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set(USE_MACH_SEM 1)
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else()
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set(__DARWIN_NON_CANCELABLE 0)
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set(USE_MACH_SEM 0)
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endif()
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check_include_files("malloc/malloc.h" HAVE_MALLOC_MALLOC_H)
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check_include_files("memory.h" HAVE_MEMORY_H)
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check_include_files("pthread/qos.h" HAVE_PTHREAD_QOS_H)
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check_include_files("pthread/workqueue_private.h" HAVE_PTHREAD_WORKQUEUE_PRIVATE_H)
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check_include_files("pthread_machdep.h" HAVE_PTHREAD_MACHDEP_H)
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check_include_files("pthread_np.h" HAVE_PTHREAD_NP_H)
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check_include_files("pthread_workqueue.h" HAVE_PTHREAD_WORKQUEUE_H)
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check_include_files("stdint.h" HAVE_STDINT_H)
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check_include_files("stdlib.h" HAVE_STDLIB_H)
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check_include_files("string.h" HAVE_STRING_H)
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check_include_files("strings.h" HAVE_STRINGS_H)
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check_include_files("sys/cdefs.h" HAVE_SYS_CDEFS_H)
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check_include_files("sys/guarded.h" HAVE_SYS_GUARDED_H)
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check_include_files("sys/stat.h" HAVE_SYS_STAT_H)
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check_include_files("sys/types.h" HAVE_SYS_TYPES_H)
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check_include_files("unistd.h" HAVE_UNISTD_H)
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check_library_exists(pthread sem_init "" USE_POSIX_SEM)
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check_symbol_exists(CLOCK_UPTIME "time.h" HAVE_DECL_CLOCK_UPTIME)
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check_symbol_exists(CLOCK_MONOTONIC "time.h" HAVE_DECL_CLOCK_MONOTONIC)
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check_symbol_exists(FD_COPY "sys/select.h" HAVE_DECL_FD_COPY)
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check_symbol_exists(NOTE_NONE "sys/event.h" HAVE_DECL_NOTE_NONE)
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check_symbol_exists(NOTE_REAP "sys/event.h" HAVE_DECL_NOTE_REAP)
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check_symbol_exists(NOTE_REVOKE "sys/event.h" HAVE_DECL_NOTE_REVOKE)
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check_symbol_exists(NOTE_SIGNAL "sys/event.h" HAVE_DECL_NOTE_SIGNAL)
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check_symbol_exists(SIGEMT "signal.h" HAVE_DECL_SIGEMT)
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check_symbol_exists(VQ_QUOTA "sys/mount.h" HAVE_DECL_VQ_QUOTA)
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check_symbol_exists(VQ_UPDATE "sys/mount.h" HAVE_DECL_VQ_UPDATE)
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check_symbol_exists(VQ_VERYLOWDISK "sys/mount.h" HAVE_DECL_VQ_VERYLOWDISK)
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check_symbol_exists(program_invocation_name "errno.h" HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME)
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if(APPLE)
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add_definitions(-DDISPATCH_USE_DTRACE=1)
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else()
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add_definitions(-DDISPATCH_USE_DTRACE=0)
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endif()
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# TODO(compnerd) unify the config.h naming across Darwin and others and rename
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# to config.h
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configure_file("${CMAKE_SOURCE_DIR}/cmake/config.h.in"
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"${CMAKE_BINARY_DIR}/config/config_ac.h")
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add_subdirectory(dispatch)
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add_subdirectory(man)
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add_subdirectory(os)
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add_subdirectory(private)
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add_subdirectory(src)
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if(ENABLE_TESTING)
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add_subdirectory(tests)
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endif()
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‎cmake/config.h.in

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/* config/config.h.in. Generated from configure.ac by autoheader. */
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/* Define if building pthread work queues from source */
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#undef BUILD_OWN_PTHREAD_WORKQUEUES
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/* Define to 1 if you have the declaration of `CLOCK_MONOTONIC', and to 0 if
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you don't. */
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#cmakedefine01 HAVE_DECL_CLOCK_MONOTONIC
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/* Define to 1 if you have the declaration of `CLOCK_UPTIME', and to 0 if you
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don't. */
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#cmakedefine01 HAVE_DECL_CLOCK_UPTIME
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/* Define to 1 if you have the declaration of `FD_COPY', and to 0 if you
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don't. */
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#cmakedefine01 HAVE_DECL_FD_COPY
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/* Define to 1 if you have the declaration of `NOTE_NONE', and to 0 if you
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don't. */
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#cmakedefine01 HAVE_DECL_NOTE_NONE
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/* Define to 1 if you have the declaration of `NOTE_REAP', and to 0 if you
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don't. */
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#cmakedefine01 HAVE_DECL_NOTE_REAP
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/* Define to 1 if you have the declaration of `NOTE_REVOKE', and to 0 if you
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don't. */
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#cmakedefine01 HAVE_DECL_NOTE_REVOKE
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/* Define to 1 if you have the declaration of `NOTE_SIGNAL', and to 0 if you
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don't. */
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#cmakedefine01 HAVE_DECL_NOTE_SIGNAL
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/* Define to 1 if you have the declaration of `POSIX_SPAWN_START_SUSPENDED',
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and to 0 if you don't. */
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#undef HAVE_DECL_POSIX_SPAWN_START_SUSPENDED
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/* Define to 1 if you have the declaration of `program_invocation_short_name',
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and to 0 if you don't. */
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#cmakedefine01 HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME
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/* Define to 1 if you have the declaration of `SIGEMT', and to 0 if you don't.
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*/
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#cmakedefine01 HAVE_DECL_SIGEMT
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/* Define to 1 if you have the declaration of `VQ_QUOTA', and to 0 if you
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don't. */
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#cmakedefine01 HAVE_DECL_VQ_QUOTA
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/* Define to 1 if you have the declaration of `VQ_UPDATE', and to 0 if you
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don't. */
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#cmakedefine01 HAVE_DECL_VQ_UPDATE
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/* Define to 1 if you have the declaration of `VQ_VERYLOWDISK', and to 0 if
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you don't. */
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#cmakedefine01 HAVE_DECL_VQ_VERYLOWDISK
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/* Define to 1 if you have the <dlfcn.h> header file. */
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#cmakedefine01 HAVE_DLFCN_H
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/* Define to 1 if you have the <fcntl.h> header file. */
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#cmakedefine01 HAVE_FCNTL_H
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/* Define to 1 if you have the `getprogname' function. */
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#cmakedefine01 HAVE_GETPROGNAME
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/* Define to 1 if you have the <inttypes.h> header file. */
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#cmakedefine01 HAVE_INTTYPES_H
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/* Define if Apple leaks program is present */
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#undef HAVE_LEAKS
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/* Define to 1 if you have the <libkern/OSAtomic.h> header file. */
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#cmakedefine01 HAVE_LIBKERN_OSATOMIC_H
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/* Define to 1 if you have the <libkern/OSCrossEndian.h> header file. */
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#cmakedefine01 HAVE_LIBKERN_OSCROSSENDIAN_H
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/* Define to 1 if you have the <libproc_internal.h> header file. */
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#cmakedefine01 HAVE_LIBPROC_INTERNAL_H
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/* Define if mach is present */
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#cmakedefine01 HAVE_MACH
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/* Define to 1 if you have the `mach_absolute_time' function. */
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#cmakedefine01 HAVE_MACH_ABSOLUTE_TIME
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/* Define to 1 if you have the `mach_port_construct' function. */
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#cmakedefine01 HAVE_MACH_PORT_CONSTRUCT
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/* Define to 1 if you have the `malloc_create_zone' function. */
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#cmakedefine01 HAVE_MALLOC_CREATE_ZONE
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/* Define to 1 if you have the <malloc/malloc.h> header file. */
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#cmakedefine01 HAVE_MALLOC_MALLOC_H
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/* Define to 1 if you have the <memory.h> header file. */
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#cmakedefine01 HAVE_MEMORY_H
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/* Define if __builtin_trap marked noreturn */
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#undef HAVE_NORETURN_BUILTIN_TRAP
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/* Define if you have the Objective-C runtime */
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#undef HAVE_OBJC
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/* Define to 1 if you have the `pthread_key_init_np' function. */
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#cmakedefine01 HAVE_PTHREAD_KEY_INIT_NP
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/* Define to 1 if you have the <pthread_machdep.h> header file. */
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#cmakedefine01 HAVE_PTHREAD_MACHDEP_H
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/* Define to 1 if you have the `pthread_main_np' function. */
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#cmakedefine01 HAVE_PTHREAD_MAIN_NP
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/* Define to 1 if you have the <pthread_np.h> header file. */
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#cmakedefine01 HAVE_PTHREAD_NP_H
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/* Define to 1 if you have the <pthread/qos.h> header file. */
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#cmakedefine01 HAVE_PTHREAD_QOS_H
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/* Define if pthread work queues are present */
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#undef HAVE_PTHREAD_WORKQUEUES
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/* Define to 1 if you have the <pthread_workqueue.h> header file. */
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#cmakedefine01 HAVE_PTHREAD_WORKQUEUE_H
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/* Define to 1 if you have the <pthread/workqueue_private.h> header file. */
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#cmakedefine01 HAVE_PTHREAD_WORKQUEUE_PRIVATE_H
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/* Define to 1 if you have the `pthread_workqueue_setdispatch_np' function. */
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#cmakedefine01 HAVE_PTHREAD_WORKQUEUE_SETDISPATCH_NP
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/* Define to 1 if you have the <stdint.h> header file. */
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#cmakedefine HAVE_STDINT_H
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/* Define to 1 if you have the <stdlib.h> header file. */
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#cmakedefine01 HAVE_STDLIB_H
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/* Define to 1 if you have the <strings.h> header file. */
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#cmakedefine01 HAVE_STRINGS_H
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/* Define to 1 if you have the <string.h> header file. */
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#cmakedefine01 HAVE_STRING_H
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/* Define to 1 if you have the `strlcpy' function. */
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#cmakedefine01 HAVE_STRLCPY
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/* Define if building for Swift */
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#undef HAVE_SWIFT
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/* Define to 1 if you have the `sysconf' function. */
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#cmakedefine01 HAVE_SYSCONF
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/* Define to 1 if you have the <sys/cdefs.h> header file. */
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#cmakedefine01 HAVE_SYS_CDEFS_H
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/* Define to 1 if you have the <sys/guarded.h> header file. */
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#cmakedefine01 HAVE_SYS_GUARDED_H
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/* Define to 1 if you have the <sys/stat.h> header file. */
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#cmakedefine01 HAVE_SYS_STAT_H
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/* Define to 1 if you have the <sys/types.h> header file. */
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#cmakedefine01 HAVE_SYS_TYPES_H
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/* Define to 1 if you have the <TargetConditionals.h> header file. */
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#cmakedefine01 HAVE_TARGETCONDITIONALS_H
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/* Define to 1 if you have the <unistd.h> header file. */
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#cmakedefine01 HAVE_UNISTD_H
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/* Define to 1 if you have the `_pthread_workqueue_init' function. */
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#cmakedefine01 HAVE__PTHREAD_WORKQUEUE_INIT
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/* Define to the sub-directory where libtool stores uninstalled libraries. */
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#undef LT_OBJDIR
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/* Name of package */
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#undef PACKAGE
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/* Define to the address where bug reports for this package should be sent. */
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#undef PACKAGE_BUGREPORT
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/* Define to the full name of this package. */
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#cmakedefine PACKAGE_NAME
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/* Define to the full name and version of this package. */
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#define PACKAGE_STRING #PACKAGE_NAME
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/* Define to the one symbol short name of this package. */
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#undef PACKAGE_TARNAME
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/* Define to the home page for this package. */
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#undef PACKAGE_URL
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/* Define to the version of this package. */
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#cmakedefine PACKAGE_VERSION
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/* Define to 1 if you have the ANSI C header files. */
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#undef STDC_HEADERS
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/* Define to use non-portable pthread TSD optimizations for Mac OS X) */
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#cmakedefine01 USE_APPLE_TSD_OPTIMIZATIONS
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/* Define to use Futex semaphores */
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#undef USE_FUTEX_SEM
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/* Define to tag libdispatch_init as a constructor */
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#undef USE_LIBDISPATCH_INIT_CONSTRUCTOR
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/* Define to use Mach semaphores */
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#cmakedefine01 USE_MACH_SEM
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/* Define to use POSIX semaphores */
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#cmakedefine01 USE_POSIX_SEM
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/* Enable extensions on AIX 3, Interix. */
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#ifndef _ALL_SOURCE
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# undef _ALL_SOURCE
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#endif
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/* Enable GNU extensions on systems that have them. */
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#ifndef _GNU_SOURCE
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#cmakedefine _GNU_SOURCE
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#endif
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/* Enable threading extensions on Solaris. */
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#ifndef _POSIX_PTHREAD_SEMANTICS
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# undef _POSIX_PTHREAD_SEMANTICS
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#endif
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/* Enable extensions on HP NonStop. */
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#ifndef _TANDEM_SOURCE
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# undef _TANDEM_SOURCE
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#endif
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/* Enable general extensions on Solaris. */
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#ifndef __EXTENSIONS__
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# undef __EXTENSIONS__
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#endif
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/* Version number of package */
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#undef VERSION
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/* Define to 1 if on MINIX. */
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#undef _MINIX
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/* Define to 2 if the system does not provide POSIX.1 features except with
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this defined. */
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#undef _POSIX_1_SOURCE
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/* Define to 1 if you need to in order for `stat' and other things to work. */
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#undef _POSIX_SOURCE
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/* Define if using Darwin $NOCANCEL */
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#cmakedefine01 __DARWIN_NON_CANCELABLE

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