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mariadb/configure.cmake
Monty bddbef3573 MDEV-34533 asan error about stack overflow when writing record in Aria 
The problem was that when using clang + asan, we do not get a correct value
for the thread stack as some local variables are not allocated at the
normal stack.

It looks like that for example clang 18.1.3, when compiling with
-O2 -fsanitize=addressan it puts local variables and things allocated by
alloca() in other areas than on the stack.

The following code shows the issue

Thread 6 "mariadbd" hit Breakpoint 3, do_handle_one_connection
    (connect=0x5080000027b8,
    put_in_cache=<optimized out>) at sql/sql_connect.cc:1399

THD *thd;
1399      thd->thread_stack= (char*) &thd;
(gdb) p &thd
(THD **) 0x7fffedee7060
(gdb) p $sp
(void *) 0x7fffef4e7bc0

The address of thd is 24M away from the stack pointer

(gdb) info reg
...
rsp            0x7fffef4e7bc0      0x7fffef4e7bc0
...
r13            0x7fffedee7060      140737185214560

r13 is pointing to the address of the thd. Probably some kind of
"local stack" used by the sanitizer

I have verified this with gdb on a recursive call that calls alloca()
in a loop. In this case all objects was stored in a local heap,
not on the stack.

To solve this issue in a portable way, I have added two functions:

my_get_stack_pointer() returns the address of the current stack pointer.
The code is using asm instructions for intel 32/64 bit, powerpc,
arm 32/64 bit and sparc 32/64 bit.
Supported compilers are gcc, clang and MSVC.
For MSVC 64 bit we are using _AddressOfReturnAddress()

As a fallback for other compilers/arch we use the address of a local
variable.

my_get_stack_bounds() that will return the address of the base stack
and stack size using pthread_attr_getstack() or NtCurrentTed() with
fallback to using the address of a local variable and user provided
stack size.

Server changes are:

- Moving setting of thread_stack to THD::store_globals() using
  my_get_stack_bounds().
- Removing setting of thd->thread_stack, except in functions that
  allocates a lot on the stack before calling store_globals().  When
  using estimates for stack start, we reduce stack_size with
  MY_STACK_SAFE_MARGIN (8192) to take into account the stack used
  before calling store_globals().

I also added a unittest, stack_allocation-t, to verify the new code.

Reviewed-by: Sergei Golubchik <serg@mariadb.org>
2024-10-16 17:24:46 +03:00

994 lines
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# Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA
#
INCLUDE (CheckCSourceCompiles)
INCLUDE (CheckCXXSourceCompiles)
INCLUDE (CheckStructHasMember)
INCLUDE (CheckLibraryExists)
INCLUDE (CheckFunctionExists)
INCLUDE (CheckCCompilerFlag)
INCLUDE (CheckCSourceRuns)
INCLUDE (CheckSymbolExists)
# WITH_PIC options.Not of much use, PIC is taken care of on platforms
# where it makes sense anyway.
IF(UNIX)
IF(APPLE)
# OSX executable are always PIC
SET(WITH_PIC ON)
ELSE()
OPTION(WITH_PIC "Generate PIC objects" OFF)
IF(WITH_PIC)
SET(CMAKE_C_FLAGS
"${CMAKE_C_FLAGS} ${CMAKE_SHARED_LIBRARY_C_FLAGS}")
SET(CMAKE_CXX_FLAGS
"${CMAKE_CXX_FLAGS} ${CMAKE_SHARED_LIBRARY_CXX_FLAGS}")
ENDIF()
ENDIF()
ENDIF()
# System type affects version_compile_os variable
IF(NOT SYSTEM_TYPE)
IF(PLATFORM)
SET(SYSTEM_TYPE ${PLATFORM})
ELSE()
SET(SYSTEM_TYPE ${CMAKE_SYSTEM_NAME})
ENDIF()
ENDIF()
IF(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang" AND (NOT MSVC))
IF (CMAKE_EXE_LINKER_FLAGS MATCHES " -static "
OR CMAKE_EXE_LINKER_FLAGS MATCHES " -static$")
SET(HAVE_DLOPEN FALSE CACHE "Disable dlopen due to -static flag" FORCE)
SET(WITHOUT_DYNAMIC_PLUGINS TRUE)
ENDIF()
ENDIF()
# use runtime atomic-support detection in aarch64
IF(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64")
MY_CHECK_AND_SET_COMPILER_FLAG("-moutline-atomics")
ENDIF()
IF(WITHOUT_DYNAMIC_PLUGINS)
MESSAGE("Dynamic plugins are disabled.")
ENDIF(WITHOUT_DYNAMIC_PLUGINS)
# Large files, common flag
SET(_LARGEFILE_SOURCE 1)
# If finds the size of a type, set SIZEOF_<type> and HAVE_<type>
FUNCTION(MY_CHECK_TYPE_SIZE type defbase)
CHECK_TYPE_SIZE("${type}" SIZEOF_${defbase})
IF(SIZEOF_${defbase})
SET(HAVE_${defbase} 1 PARENT_SCOPE)
ENDIF()
ENDFUNCTION()
# Same for structs, setting HAVE_STRUCT_<name> instead
FUNCTION(MY_CHECK_STRUCT_SIZE type defbase)
CHECK_TYPE_SIZE("struct ${type}" SIZEOF_${defbase})
IF(SIZEOF_${defbase})
SET(HAVE_STRUCT_${defbase} 1 PARENT_SCOPE)
ENDIF()
ENDFUNCTION()
# Searches function in libraries
# if function is found, sets output parameter result to the name of the library
# if function is found in libc, result will be empty
FUNCTION(MY_SEARCH_LIBS func libs result)
IF(${${result}})
# Library is already found or was predefined
RETURN()
ENDIF()
CHECK_FUNCTION_EXISTS(${func} HAVE_${func}_IN_LIBC)
IF(HAVE_${func}_IN_LIBC)
SET(${result} "" PARENT_SCOPE)
RETURN()
ENDIF()
FOREACH(lib ${libs})
CHECK_LIBRARY_EXISTS(${lib} ${func} "" HAVE_${func}_IN_${lib})
IF(HAVE_${func}_IN_${lib})
SET(${result} ${lib} PARENT_SCOPE)
SET(HAVE_${result} 1 PARENT_SCOPE)
RETURN()
ENDIF()
ENDFOREACH()
ENDFUNCTION()
# Find out which libraries to use.
IF(UNIX)
MY_SEARCH_LIBS(floor m LIBM)
IF(NOT LIBM)
MY_SEARCH_LIBS(__infinity m LIBM)
ENDIF()
MY_SEARCH_LIBS(gethostbyname_r "nsl_r;nsl" LIBNSL)
MY_SEARCH_LIBS(bind "bind;socket" LIBBIND)
MY_SEARCH_LIBS(crypt crypt LIBCRYPT)
MY_SEARCH_LIBS(setsockopt socket LIBSOCKET)
MY_SEARCH_LIBS(sched_yield rt LIBRT)
IF(NOT LIBRT)
MY_SEARCH_LIBS(clock_gettime rt LIBRT)
ENDIF()
MY_SEARCH_LIBS(backtrace_symbols_fd execinfo LIBEXECINFO)
set(THREADS_PREFER_PTHREAD_FLAG ON)
FIND_PACKAGE(Threads)
SET(CMAKE_REQUIRED_LIBRARIES
${LIBM} ${LIBNSL} ${LIBBIND} ${LIBCRYPT} ${LIBSOCKET} ${CMAKE_DL_LIBS} ${CMAKE_THREAD_LIBS_INIT} ${LIBRT} ${LIBEXECINFO})
# Need explicit pthread for gcc -fsanitize=address
IF(CMAKE_USE_PTHREADS_INIT AND CMAKE_C_FLAGS MATCHES "-fsanitize=")
SET(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} pthread)
ENDIF()
IF(CMAKE_REQUIRED_LIBRARIES)
LIST(REMOVE_DUPLICATES CMAKE_REQUIRED_LIBRARIES)
ENDIF()
LINK_LIBRARIES(${CMAKE_THREAD_LIBS_INIT})
OPTION(WITH_LIBWRAP "Compile with tcp wrappers support" OFF)
IF(WITH_LIBWRAP)
SET(SAVE_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
SET(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} wrap)
CHECK_C_SOURCE_COMPILES(
"
#include <sys/types.h>
#include <tcpd.h>
int allow_severity = 0;
int deny_severity = 0;
int main()
{
hosts_access(0);
}"
HAVE_LIBWRAP)
SET(CMAKE_REQUIRED_LIBRARIES ${SAVE_CMAKE_REQUIRED_LIBRARIES})
IF(HAVE_LIBWRAP)
SET(MYSYS_LIBWRAP_SOURCE ${CMAKE_SOURCE_DIR}/mysys/my_libwrap.c)
SET(LIBWRAP "wrap")
ENDIF()
ENDIF()
ADD_FEATURE_INFO(LIBWRAP HAVE_LIBWRAP "Support for tcp wrappers")
ENDIF()
#
# Tests for header files
#
INCLUDE (CheckIncludeFiles)
INCLUDE (CheckIncludeFileCXX)
CHECK_INCLUDE_FILES ("stdlib.h;stdarg.h;string.h;float.h" STDC_HEADERS)
CHECK_INCLUDE_FILES (sys/types.h HAVE_SYS_TYPES_H)
CHECK_INCLUDE_FILES (alloca.h HAVE_ALLOCA_H)
CHECK_INCLUDE_FILES (arpa/inet.h HAVE_ARPA_INET_H)
CHECK_INCLUDE_FILES (crypt.h HAVE_CRYPT_H)
CHECK_INCLUDE_FILES (dirent.h HAVE_DIRENT_H)
CHECK_INCLUDE_FILES (dlfcn.h HAVE_DLFCN_H)
CHECK_INCLUDE_FILES (execinfo.h HAVE_EXECINFO_H)
CHECK_INCLUDE_FILES (fcntl.h HAVE_FCNTL_H)
CHECK_INCLUDE_FILES (fenv.h HAVE_FENV_H)
CHECK_INCLUDE_FILES (float.h HAVE_FLOAT_H)
CHECK_INCLUDE_FILES (fpu_control.h HAVE_FPU_CONTROL_H)
CHECK_INCLUDE_FILES (grp.h HAVE_GRP_H)
CHECK_INCLUDE_FILES (ieeefp.h HAVE_IEEEFP_H)
CHECK_INCLUDE_FILES (inttypes.h HAVE_INTTYPES_H)
CHECK_INCLUDE_FILES (langinfo.h HAVE_LANGINFO_H)
CHECK_INCLUDE_FILES (link.h HAVE_LINK_H)
CHECK_INCLUDE_FILES (linux/unistd.h HAVE_LINUX_UNISTD_H)
CHECK_INCLUDE_FILES (limits.h HAVE_LIMITS_H)
CHECK_INCLUDE_FILES (locale.h HAVE_LOCALE_H)
CHECK_INCLUDE_FILES (malloc.h HAVE_MALLOC_H)
CHECK_INCLUDE_FILES (memory.h HAVE_MEMORY_H)
CHECK_INCLUDE_FILES (ndir.h HAVE_NDIR_H)
CHECK_INCLUDE_FILES (netinet/in.h HAVE_NETINET_IN_H)
CHECK_INCLUDE_FILES (paths.h HAVE_PATHS_H)
CHECK_INCLUDE_FILES (poll.h HAVE_POLL_H)
CHECK_INCLUDE_FILES (sys/poll.h HAVE_SYS_POLL_H)
CHECK_INCLUDE_FILES (pwd.h HAVE_PWD_H)
CHECK_INCLUDE_FILES (sched.h HAVE_SCHED_H)
CHECK_INCLUDE_FILES (select.h HAVE_SELECT_H)
CHECK_INCLUDE_FILES ("sys/types.h;sys/dir.h" HAVE_SYS_DIR_H)
CHECK_INCLUDE_FILES ("sys/types.h;sys/event.h" HAVE_SYS_EVENT_H)
CHECK_INCLUDE_FILES (sys/ndir.h HAVE_SYS_NDIR_H)
CHECK_INCLUDE_FILES (sys/pte.h HAVE_SYS_PTE_H)
CHECK_INCLUDE_FILES (stddef.h HAVE_STDDEF_H)
CHECK_INCLUDE_FILES (stdint.h HAVE_STDINT_H)
CHECK_INCLUDE_FILES (stdlib.h HAVE_STDLIB_H)
CHECK_INCLUDE_FILES (strings.h HAVE_STRINGS_H)
CHECK_INCLUDE_FILES (string.h HAVE_STRING_H)
CHECK_INCLUDE_FILES (synch.h HAVE_SYNCH_H)
CHECK_INCLUDE_FILES (sysent.h HAVE_SYSENT_H)
CHECK_INCLUDE_FILES (sys/file.h HAVE_SYS_FILE_H)
CHECK_INCLUDE_FILES (sys/fpu.h HAVE_SYS_FPU_H)
CHECK_INCLUDE_FILES (sys/ioctl.h HAVE_SYS_IOCTL_H)
CHECK_INCLUDE_FILES ("sys/types.h;sys/malloc.h" HAVE_SYS_MALLOC_H)
CHECK_INCLUDE_FILES (sys/mman.h HAVE_SYS_MMAN_H)
CHECK_INCLUDE_FILES (linux/mman.h HAVE_LINUX_MMAN_H)
CHECK_INCLUDE_FILES (sys/prctl.h HAVE_SYS_PRCTL_H)
CHECK_INCLUDE_FILES (sys/resource.h HAVE_SYS_RESOURCE_H)
CHECK_INCLUDE_FILES (sys/select.h HAVE_SYS_SELECT_H)
CHECK_INCLUDE_FILES (sys/socket.h HAVE_SYS_SOCKET_H)
CHECK_INCLUDE_FILES (sys/stat.h HAVE_SYS_STAT_H)
CHECK_INCLUDE_FILES (sys/stream.h HAVE_SYS_STREAM_H)
CHECK_INCLUDE_FILES (sys/syscall.h HAVE_SYS_SYSCALL_H)
CHECK_INCLUDE_FILES (asm/termbits.h HAVE_ASM_TERMBITS_H)
CHECK_INCLUDE_FILES (termbits.h HAVE_TERMBITS_H)
CHECK_INCLUDE_FILES (termios.h HAVE_TERMIOS_H)
CHECK_INCLUDE_FILES (termio.h HAVE_TERMIO_H)
CHECK_INCLUDE_FILES (termcap.h HAVE_TERMCAP_H)
CHECK_INCLUDE_FILES (unistd.h HAVE_UNISTD_H)
CHECK_INCLUDE_FILES (utime.h HAVE_UTIME_H)
CHECK_INCLUDE_FILES (varargs.h HAVE_VARARGS_H)
CHECK_INCLUDE_FILES (sys/time.h HAVE_SYS_TIME_H)
CHECK_INCLUDE_FILES (sys/utime.h HAVE_SYS_UTIME_H)
CHECK_INCLUDE_FILES (sys/wait.h HAVE_SYS_WAIT_H)
CHECK_INCLUDE_FILES (sys/param.h HAVE_SYS_PARAM_H)
CHECK_INCLUDE_FILES (sys/vadvise.h HAVE_SYS_VADVISE_H)
CHECK_INCLUDE_FILES (fnmatch.h HAVE_FNMATCH_H)
CHECK_INCLUDE_FILES (stdarg.h HAVE_STDARG_H)
CHECK_INCLUDE_FILES ("stdlib.h;sys/un.h" HAVE_SYS_UN_H)
CHECK_INCLUDE_FILES (wchar.h HAVE_WCHAR_H)
CHECK_INCLUDE_FILES (wctype.h HAVE_WCTYPE_H)
CHECK_INCLUDE_FILES (sys/sockio.h HAVE_SYS_SOCKIO_H)
CHECK_INCLUDE_FILES (sys/utsname.h HAVE_SYS_UTSNAME_H)
CHECK_INCLUDE_FILES (sys/statvfs.h HAVE_SYS_STATVFS_H)
SET(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} -DPACKAGE=test) # bfd.h is picky
CHECK_INCLUDE_FILES (bfd.h BFD_H_EXISTS)
IF(BFD_H_EXISTS)
IF(NOT_FOR_DISTRIBUTION)
SET(NON_DISTRIBUTABLE_WARNING "GPLv3" CACHE INTERNAL "")
SET(HAVE_BFD_H 1)
ENDIF()
ENDIF()
IF(HAVE_SYS_STREAM_H)
# Needs sys/stream.h on Solaris
CHECK_INCLUDE_FILES ("sys/stream.h;sys/ptem.h" HAVE_SYS_PTEM_H)
ELSE()
CHECK_INCLUDE_FILES (sys/ptem.h HAVE_SYS_PTEM_H)
ENDIF()
# Figure out threading library
#
FIND_PACKAGE (Threads)
FUNCTION(MY_CHECK_PTHREAD_ONCE_INIT)
MY_CHECK_C_COMPILER_FLAG("-Werror")
IF(NOT have_C__Werror)
RETURN()
ENDIF()
SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Werror")
CHECK_C_SOURCE_COMPILES("
#include <pthread.h>
void foo(void) {}
int main()
{
pthread_once_t once_control = PTHREAD_ONCE_INIT;
pthread_once(&once_control, foo);
return 0;
}"
HAVE_PTHREAD_ONCE_INIT
)
# http://bugs.opensolaris.org/bugdatabase/printableBug.do?bug_id=6611808
IF(NOT HAVE_PTHREAD_ONCE_INIT)
CHECK_C_SOURCE_COMPILES("
#include <pthread.h>
void foo(void) {}
int main()
{
pthread_once_t once_control = { PTHREAD_ONCE_INIT };
pthread_once(&once_control, foo);
return 0;
}"
HAVE_ARRAY_PTHREAD_ONCE_INIT
)
ENDIF()
IF(HAVE_PTHREAD_ONCE_INIT)
SET(PTHREAD_ONCE_INITIALIZER "PTHREAD_ONCE_INIT" PARENT_SCOPE)
ENDIF()
IF(HAVE_ARRAY_PTHREAD_ONCE_INIT)
SET(PTHREAD_ONCE_INITIALIZER "{ PTHREAD_ONCE_INIT }" PARENT_SCOPE)
ENDIF()
ENDFUNCTION()
IF(CMAKE_USE_PTHREADS_INIT)
MY_CHECK_PTHREAD_ONCE_INIT()
ENDIF()
#
# Tests for functions
#
CHECK_FUNCTION_EXISTS (accept4 HAVE_ACCEPT4)
CHECK_FUNCTION_EXISTS (access HAVE_ACCESS)
CHECK_FUNCTION_EXISTS (alarm HAVE_ALARM)
SET(HAVE_ALLOCA 1)
CHECK_FUNCTION_EXISTS (backtrace HAVE_BACKTRACE)
CHECK_FUNCTION_EXISTS (backtrace_symbols HAVE_BACKTRACE_SYMBOLS)
CHECK_FUNCTION_EXISTS (backtrace_symbols_fd HAVE_BACKTRACE_SYMBOLS_FD)
CHECK_FUNCTION_EXISTS (printstack HAVE_PRINTSTACK)
CHECK_FUNCTION_EXISTS (bfill HAVE_BFILL)
CHECK_FUNCTION_EXISTS (index HAVE_INDEX)
CHECK_FUNCTION_EXISTS (clock_gettime HAVE_CLOCK_GETTIME)
CHECK_FUNCTION_EXISTS (cuserid HAVE_CUSERID)
CHECK_FUNCTION_EXISTS (ftruncate HAVE_FTRUNCATE)
CHECK_FUNCTION_EXISTS (compress HAVE_COMPRESS)
CHECK_FUNCTION_EXISTS (crypt HAVE_CRYPT)
CHECK_FUNCTION_EXISTS (dladdr HAVE_DLADDR)
CHECK_FUNCTION_EXISTS (dlerror HAVE_DLERROR)
CHECK_FUNCTION_EXISTS (dlopen HAVE_DLOPEN)
CHECK_FUNCTION_EXISTS (fchmod HAVE_FCHMOD)
CHECK_FUNCTION_EXISTS (fcntl HAVE_FCNTL)
CHECK_FUNCTION_EXISTS (fdatasync HAVE_FDATASYNC)
CHECK_SYMBOL_EXISTS(fdatasync "unistd.h" HAVE_DECL_FDATASYNC)
CHECK_FUNCTION_EXISTS (fesetround HAVE_FESETROUND)
CHECK_FUNCTION_EXISTS (fedisableexcept HAVE_FEDISABLEEXCEPT)
CHECK_FUNCTION_EXISTS (fseeko HAVE_FSEEKO)
CHECK_FUNCTION_EXISTS (fsync HAVE_FSYNC)
CHECK_FUNCTION_EXISTS (getcwd HAVE_GETCWD)
CHECK_FUNCTION_EXISTS (gethostbyaddr_r HAVE_GETHOSTBYADDR_R)
CHECK_FUNCTION_EXISTS (gethrtime HAVE_GETHRTIME)
CHECK_FUNCTION_EXISTS (getpass HAVE_GETPASS)
CHECK_FUNCTION_EXISTS (getpassphrase HAVE_GETPASSPHRASE)
CHECK_FUNCTION_EXISTS (getpwnam HAVE_GETPWNAM)
CHECK_FUNCTION_EXISTS (getpwuid HAVE_GETPWUID)
CHECK_FUNCTION_EXISTS (getrlimit HAVE_GETRLIMIT)
CHECK_FUNCTION_EXISTS (getifaddrs HAVE_GETIFADDRS)
CHECK_FUNCTION_EXISTS (getrusage HAVE_GETRUSAGE)
CHECK_FUNCTION_EXISTS (getwd HAVE_GETWD)
CHECK_FUNCTION_EXISTS (gmtime_r HAVE_GMTIME_R)
CHECK_FUNCTION_EXISTS (initgroups HAVE_INITGROUPS)
CHECK_FUNCTION_EXISTS (ldiv HAVE_LDIV)
CHECK_FUNCTION_EXISTS (localtime_r HAVE_LOCALTIME_R)
CHECK_FUNCTION_EXISTS (lstat HAVE_LSTAT)
CHECK_FUNCTION_EXISTS (madvise HAVE_MADVISE)
CHECK_FUNCTION_EXISTS (mallinfo HAVE_MALLINFO)
CHECK_FUNCTION_EXISTS (mallinfo2 HAVE_MALLINFO2)
CHECK_FUNCTION_EXISTS (malloc_zone_statistics HAVE_MALLOC_ZONE)
CHECK_FUNCTION_EXISTS (memcpy HAVE_MEMCPY)
CHECK_FUNCTION_EXISTS (memmove HAVE_MEMMOVE)
CHECK_FUNCTION_EXISTS (mkstemp HAVE_MKSTEMP)
CHECK_FUNCTION_EXISTS (mkostemp HAVE_MKOSTEMP)
CHECK_FUNCTION_EXISTS (mlock HAVE_MLOCK)
CHECK_FUNCTION_EXISTS (mlockall HAVE_MLOCKALL)
CHECK_FUNCTION_EXISTS (mmap HAVE_MMAP)
CHECK_FUNCTION_EXISTS (mmap64 HAVE_MMAP64)
CHECK_FUNCTION_EXISTS (perror HAVE_PERROR)
CHECK_FUNCTION_EXISTS (poll HAVE_POLL)
CHECK_FUNCTION_EXISTS (posix_fallocate HAVE_POSIX_FALLOCATE)
CHECK_FUNCTION_EXISTS (pread HAVE_PREAD)
CHECK_FUNCTION_EXISTS (pthread_attr_create HAVE_PTHREAD_ATTR_CREATE)
CHECK_FUNCTION_EXISTS (pthread_attr_getstacksize HAVE_PTHREAD_ATTR_GETSTACKSIZE)
CHECK_FUNCTION_EXISTS (pthread_attr_setscope HAVE_PTHREAD_ATTR_SETSCOPE)
CHECK_FUNCTION_EXISTS (pthread_attr_getguardsize HAVE_PTHREAD_ATTR_GETGUARDSIZE)
CHECK_FUNCTION_EXISTS (pthread_attr_setstacksize HAVE_PTHREAD_ATTR_SETSTACKSIZE)
CHECK_FUNCTION_EXISTS (pthread_condattr_create HAVE_PTHREAD_CONDATTR_CREATE)
CHECK_FUNCTION_EXISTS (pthread_getaffinity_np HAVE_PTHREAD_GETAFFINITY_NP)
CHECK_FUNCTION_EXISTS (pthread_getattr_np HAVE_PTHREAD_GETATTR_NP)
CHECK_FUNCTION_EXISTS (pthread_key_delete HAVE_PTHREAD_KEY_DELETE)
CHECK_FUNCTION_EXISTS (pthread_rwlock_rdlock HAVE_PTHREAD_RWLOCK_RDLOCK)
CHECK_FUNCTION_EXISTS (pthread_sigmask HAVE_PTHREAD_SIGMASK)
CHECK_FUNCTION_EXISTS (pthread_yield_np HAVE_PTHREAD_YIELD_NP)
CHECK_FUNCTION_EXISTS (putenv HAVE_PUTENV)
CHECK_FUNCTION_EXISTS (readlink HAVE_READLINK)
CHECK_FUNCTION_EXISTS (realpath HAVE_REALPATH)
CHECK_FUNCTION_EXISTS (rename HAVE_RENAME)
CHECK_FUNCTION_EXISTS (rwlock_init HAVE_RWLOCK_INIT)
CHECK_FUNCTION_EXISTS (sched_yield HAVE_SCHED_YIELD)
CHECK_FUNCTION_EXISTS (setenv HAVE_SETENV)
CHECK_FUNCTION_EXISTS (setlocale HAVE_SETLOCALE)
CHECK_FUNCTION_EXISTS (sigaction HAVE_SIGACTION)
CHECK_FUNCTION_EXISTS (sigthreadmask HAVE_SIGTHREADMASK)
CHECK_FUNCTION_EXISTS (sigwait HAVE_SIGWAIT)
CHECK_FUNCTION_EXISTS (sigwaitinfo HAVE_SIGWAITINFO)
CHECK_FUNCTION_EXISTS (sigset HAVE_SIGSET)
CHECK_FUNCTION_EXISTS (sleep HAVE_SLEEP)
CHECK_FUNCTION_EXISTS (stpcpy HAVE_STPCPY)
CHECK_FUNCTION_EXISTS (strcoll HAVE_STRCOLL)
CHECK_FUNCTION_EXISTS (strerror HAVE_STRERROR)
CHECK_FUNCTION_EXISTS (strnlen HAVE_STRNLEN)
CHECK_FUNCTION_EXISTS (strpbrk HAVE_STRPBRK)
CHECK_FUNCTION_EXISTS (strtok_r HAVE_STRTOK_R)
CHECK_FUNCTION_EXISTS (strtoll HAVE_STRTOLL)
CHECK_FUNCTION_EXISTS (strtoul HAVE_STRTOUL)
CHECK_FUNCTION_EXISTS (strtoull HAVE_STRTOULL)
CHECK_FUNCTION_EXISTS (strcasecmp HAVE_STRCASECMP)
CHECK_FUNCTION_EXISTS (tell HAVE_TELL)
CHECK_FUNCTION_EXISTS (thr_yield HAVE_THR_YIELD)
CHECK_FUNCTION_EXISTS (vasprintf HAVE_VASPRINTF)
CHECK_FUNCTION_EXISTS (vsnprintf HAVE_VSNPRINTF)
CHECK_FUNCTION_EXISTS (memalign HAVE_MEMALIGN)
CHECK_FUNCTION_EXISTS (nl_langinfo HAVE_NL_LANGINFO)
IF(NOT HAVE_PTHREAD_RWLOCK_RDLOCK AND NOT HAVE_RWLOCK_INIT AND NOT WIN32)
MESSAGE(FATAL_ERROR "No usable rwlock implementation found")
ENDIF()
IF(HAVE_SYS_EVENT_H)
CHECK_FUNCTION_EXISTS (kqueue HAVE_KQUEUE)
ENDIF()
# readdir_r might exist, but be marked deprecated
SET(CMAKE_REQUIRED_FLAGS -Werror)
CHECK_CXX_SOURCE_COMPILES(
"#include <dirent.h>
int main() {
readdir_r(0,0,0);
return 0;
}" HAVE_READDIR_R)
SET(CMAKE_REQUIRED_FLAGS)
#--------------------------------------------------------------------
# Support for WL#2373 (Use cycle counter for timing)
#--------------------------------------------------------------------
CHECK_INCLUDE_FILES(time.h HAVE_TIME_H)
CHECK_INCLUDE_FILES(sys/time.h HAVE_SYS_TIME_H)
CHECK_INCLUDE_FILES(sys/times.h HAVE_SYS_TIMES_H)
CHECK_INCLUDE_FILES(ia64intrin.h HAVE_IA64INTRIN_H)
CHECK_FUNCTION_EXISTS(times HAVE_TIMES)
CHECK_FUNCTION_EXISTS(gettimeofday HAVE_GETTIMEOFDAY)
CHECK_FUNCTION_EXISTS(read_real_time HAVE_READ_REAL_TIME)
# This should work on AIX.
CHECK_FUNCTION_EXISTS(ftime HAVE_FTIME)
# This is still a normal call for milliseconds.
CHECK_FUNCTION_EXISTS(time HAVE_TIME)
# We can use time() on Macintosh if there is no ftime().
#
# Tests for symbols
#
#CHECK_SYMBOL_EXISTS(sys_errlist "stdio.h" HAVE_SYS_ERRLIST)
CHECK_SYMBOL_EXISTS(madvise "sys/mman.h" HAVE_DECL_MADVISE)
CHECK_SYMBOL_EXISTS(getpagesizes "sys/mman.h" HAVE_GETPAGESIZES)
CHECK_SYMBOL_EXISTS(tzname "time.h" HAVE_TZNAME)
CHECK_SYMBOL_EXISTS(lrand48 "stdlib.h" HAVE_LRAND48)
CHECK_SYMBOL_EXISTS(getpagesize "unistd.h" HAVE_GETPAGESIZE)
CHECK_SYMBOL_EXISTS(TIOCGWINSZ "sys/ioctl.h" GWINSZ_IN_SYS_IOCTL)
CHECK_SYMBOL_EXISTS(FIONREAD "sys/ioctl.h" FIONREAD_IN_SYS_IOCTL)
CHECK_SYMBOL_EXISTS(TIOCSTAT "sys/ioctl.h" TIOCSTAT_IN_SYS_IOCTL)
CHECK_SYMBOL_EXISTS(FIONREAD "sys/filio.h" FIONREAD_IN_SYS_FILIO)
CHECK_SYMBOL_EXISTS(gettimeofday "sys/time.h" HAVE_GETTIMEOFDAY)
#
# Test for endianness
#
INCLUDE(TestBigEndian)
IF(APPLE)
# Cannot run endian test on universal PPC/Intel binaries
# would return inconsistent result.
# config.h.cmake includes a special #ifdef for Darwin
ELSE()
TEST_BIG_ENDIAN(WORDS_BIGENDIAN)
ENDIF()
#
# Tests for type sizes (and presence)
#
INCLUDE (CheckTypeSize)
set(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
-D_LARGEFILE_SOURCE -D_LARGE_FILES -D_FILE_OFFSET_BITS=64
-D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS)
SET(CMAKE_EXTRA_INCLUDE_FILES signal.h)
MY_CHECK_TYPE_SIZE(sigset_t SIGSET_T)
IF(NOT SIZEOF_SIGSET_T)
SET(sigset_t int)
ENDIF()
MY_CHECK_TYPE_SIZE(mode_t MODE_T)
IF(NOT SIZEOF_MODE_T)
SET(mode_t int)
ENDIF()
MY_CHECK_TYPE_SIZE(sighandler_t SIGHANDLER_T)
IF(HAVE_NETINET_IN_H)
SET(CMAKE_EXTRA_INCLUDE_FILES netinet/in.h)
MY_CHECK_TYPE_SIZE(in_addr_t IN_ADDR_T)
ENDIF(HAVE_NETINET_IN_H)
IF(HAVE_STDINT_H)
SET(CMAKE_EXTRA_INCLUDE_FILES stdint.h)
ENDIF(HAVE_STDINT_H)
SET(HAVE_VOIDP 1)
SET(HAVE_CHARP 1)
SET(HAVE_LONG 1)
IF(NOT APPLE)
MY_CHECK_TYPE_SIZE("void *" VOIDP)
MY_CHECK_TYPE_SIZE("char *" CHARP)
MY_CHECK_TYPE_SIZE(long LONG)
MY_CHECK_TYPE_SIZE(size_t SIZE_T)
ENDIF()
MY_CHECK_TYPE_SIZE(short SHORT)
MY_CHECK_TYPE_SIZE(int INT)
MY_CHECK_TYPE_SIZE("long long" LONG_LONG)
SET(CMAKE_EXTRA_INCLUDE_FILES stdio.h sys/types.h)
MY_CHECK_TYPE_SIZE(off_t OFF_T)
MY_CHECK_TYPE_SIZE(uchar UCHAR)
MY_CHECK_TYPE_SIZE(uint UINT)
MY_CHECK_TYPE_SIZE(ulong ULONG)
MY_CHECK_TYPE_SIZE(int8 INT8)
MY_CHECK_TYPE_SIZE(uint8 UINT8)
MY_CHECK_TYPE_SIZE(int16 INT16)
MY_CHECK_TYPE_SIZE(uint16 UINT16)
MY_CHECK_TYPE_SIZE(int32 INT32)
MY_CHECK_TYPE_SIZE(uint32 UINT32)
MY_CHECK_TYPE_SIZE(int64 INT64)
MY_CHECK_TYPE_SIZE(uint64 UINT64)
MY_CHECK_TYPE_SIZE(time_t TIME_T)
SET (CMAKE_EXTRA_INCLUDE_FILES sys/types.h)
SET(CMAKE_EXTRA_INCLUDE_FILES)
IF(HAVE_SYS_SOCKET_H)
SET(CMAKE_EXTRA_INCLUDE_FILES sys/socket.h)
ENDIF(HAVE_SYS_SOCKET_H)
SET(CMAKE_EXTRA_INCLUDE_FILES)
IF(HAVE_IEEEFP_H)
SET(CMAKE_EXTRA_INCLUDE_FILES ieeefp.h)
MY_CHECK_TYPE_SIZE(fp_except FP_EXCEPT)
ENDIF()
#
# Code tests
#
# check whether time_t is unsigned
CHECK_C_SOURCE_COMPILES("
#include <time.h>
int main()
{
int array[(((time_t)-1) > 0) ? 1 : -1];
return 0;
}"
TIME_T_UNSIGNED)
CHECK_C_SOURCE_COMPILES("
#ifdef _WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#endif
int main()
{
select(0,0,0,0,0);
return 0;
}"
HAVE_SELECT)
#
# Check if timespec has ts_sec and ts_nsec fields
#
CHECK_C_SOURCE_COMPILES("
#include <pthread.h>
int main(int ac, char **av)
{
struct timespec abstime;
abstime.ts_sec = time(NULL)+1;
abstime.ts_nsec = 0;
}
" HAVE_TIMESPEC_TS_SEC)
#
# Check return type of qsort()
#
CHECK_C_SOURCE_COMPILES("
#include <stdlib.h>
#ifdef __cplusplus
extern \"C\"
#endif
void qsort(void *base, size_t nel, size_t width,
int (*compar) (const void *, const void *));
int main(int ac, char **av) {}
" QSORT_TYPE_IS_VOID)
IF(QSORT_TYPE_IS_VOID)
SET(RETQSORTTYPE "void")
ELSE(QSORT_TYPE_IS_VOID)
SET(RETQSORTTYPE "int")
ENDIF(QSORT_TYPE_IS_VOID)
IF(WIN32)
SET(SOCKET_SIZE_TYPE int)
ELSE()
CHECK_CXX_SOURCE_COMPILES("
#include <sys/socket.h>
int main(int argc, char **argv)
{
getsockname(0,0,(socklen_t *) 0);
return 0;
}"
HAVE_SOCKET_SIZE_T_AS_socklen_t)
IF(HAVE_SOCKET_SIZE_T_AS_socklen_t)
SET(SOCKET_SIZE_TYPE socklen_t)
ELSE()
CHECK_CXX_SOURCE_COMPILES("
#include <sys/socket.h>
int main(int argc, char **argv)
{
getsockname(0,0,(int *) 0);
return 0;
}"
HAVE_SOCKET_SIZE_T_AS_int)
IF(HAVE_SOCKET_SIZE_T_AS_int)
SET(SOCKET_SIZE_TYPE int)
ELSE()
CHECK_CXX_SOURCE_COMPILES("
#include <sys/socket.h>
int main(int argc, char **argv)
{
getsockname(0,0,(size_t *) 0);
return 0;
}"
HAVE_SOCKET_SIZE_T_AS_size_t)
IF(HAVE_SOCKET_SIZE_T_AS_size_t)
SET(SOCKET_SIZE_TYPE size_t)
ELSE()
SET(SOCKET_SIZE_TYPE int)
ENDIF()
ENDIF()
ENDIF()
ENDIF()
CHECK_CXX_SOURCE_COMPILES("
#include <pthread.h>
int main()
{
pthread_yield();
return 0;
}
" HAVE_PTHREAD_YIELD_ZERO_ARG)
IF(STACK_DIRECTION)
ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES "^(parisc|hppa)")
SET(STACK_DIRECTION 1 CACHE INTERNAL "Stack grows direction")
ELSE()
SET(STACK_DIRECTION -1 CACHE INTERNAL "Stack grows direction")
ENDIF()
#
# Check return type of signal handlers
#
CHECK_C_SOURCE_COMPILES("
#include <signal.h>
#ifdef signal
# undef signal
#endif
#ifdef __cplusplus
extern \"C\" void (*signal (int, void (*)(int)))(int);
#else
void (*signal ()) ();
#endif
int main(int ac, char **av) {}
" SIGNAL_RETURN_TYPE_IS_VOID)
IF(SIGNAL_RETURN_TYPE_IS_VOID)
SET(RETSIGTYPE void)
SET(VOID_SIGHANDLER 1)
ELSE(SIGNAL_RETURN_TYPE_IS_VOID)
SET(RETSIGTYPE int)
ENDIF(SIGNAL_RETURN_TYPE_IS_VOID)
CHECK_INCLUDE_FILES("time.h;sys/time.h" TIME_WITH_SYS_TIME)
CHECK_SYMBOL_EXISTS(O_NONBLOCK "unistd.h;fcntl.h" HAVE_FCNTL_NONBLOCK)
IF(NOT HAVE_FCNTL_NONBLOCK)
SET(NO_FCNTL_NONBLOCK 1)
ENDIF()
#
# Test for how the C compiler does inline, if at all
#
# SunPro is weird, apparently it only supports inline at -xO3 or -xO4.
# And if CMAKE_C_FLAGS has -xO4 but CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE} has -xO2
# then CHECK_C_SOURCE_COMPILES will succeed but the built will fail.
# We must test all flags here.
# XXX actually, we can do this for all compilers, not only SunPro
IF (CMAKE_CXX_COMPILER_ID MATCHES "SunPro" AND
CMAKE_GENERATOR MATCHES "Makefiles")
STRING(TOUPPER "CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE}" flags)
SET(CMAKE_REQUIRED_FLAGS "${${flags}}")
ENDIF()
CHECK_C_SOURCE_COMPILES("
extern int bar(int x);
static inline int foo(){return bar(1);}
int main(int argc, char *argv[]){return 0;}"
C_HAS_inline)
IF(NOT C_HAS_inline)
CHECK_C_SOURCE_COMPILES("
extern int bar(int x);
static __inline int foo(){return bar(1);}
int main(int argc, char *argv[]){return 0;}"
C_HAS___inline)
IF(C_HAS___inline)
SET(C_INLINE __inline)
ElSE()
SET(C_INLINE)
MESSAGE(WARNING "C compiler does not support funcion inlining")
IF(NOT NOINLINE)
MESSAGE(FATAL_ERROR "Use -DNOINLINE=TRUE to allow compilation without inlining")
ENDIF()
ENDIF()
ENDIF()
CHECK_SYMBOL_EXISTS(tcgetattr "termios.h" HAVE_TCGETATTR 1)
#
# Check type of signal routines (posix, 4.2bsd, 4.1bsd or v7)
#
CHECK_C_SOURCE_COMPILES("
#include <signal.h>
int main(int ac, char **av)
{
sigset_t ss;
struct sigaction sa;
sigemptyset(&ss); sigsuspend(&ss);
sigaction(SIGINT, &sa, (struct sigaction *) 0);
sigprocmask(SIG_BLOCK, &ss, (sigset_t *) 0);
}"
HAVE_POSIX_SIGNALS)
IF(NOT HAVE_POSIX_SIGNALS)
CHECK_C_SOURCE_COMPILES("
#include <signal.h>
int main(int ac, char **av)
{
int mask = sigmask(SIGINT);
sigsetmask(mask); sigblock(mask); sigpause(mask);
}"
HAVE_BSD_SIGNALS)
ENDIF(NOT HAVE_POSIX_SIGNALS)
# Assume regular sprintf
SET(SPRINTFS_RETURNS_INT 1)
IF(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
CHECK_CXX_SOURCE_COMPILES("
#include <cxxabi.h>
int main(int argc, char **argv)
{
char *foo= 0; int bar= 0;
foo= abi::__cxa_demangle(foo, foo, 0, &bar);
return 0;
}"
HAVE_ABI_CXA_DEMANGLE)
ENDIF()
CHECK_C_SOURCE_COMPILES("
int main()
{
extern void __attribute__((weak)) foo(void);
return 0;
}"
HAVE_WEAK_SYMBOL
)
CHECK_C_SOURCE_COMPILES("
void foo(int *x) { }
int main() {
int a __attribute__((cleanup(foo)));
return 0;
}"
HAVE_ATTRIBUTE_CLEANUP
)
CHECK_CXX_SOURCE_COMPILES("
#include <new>
int main()
{
char *c = new char;
return 0;
}"
HAVE_CXX_NEW
)
CHECK_CXX_SOURCE_COMPILES("
#undef inline
#if !defined(SCO) && !defined(__osf__) && !defined(_REENTRANT)
#define _REENTRANT
#endif
#include <pthread.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
int main()
{
struct hostent *foo =
gethostbyaddr_r((const char *) 0,
0, 0, (struct hostent *) 0, (char *) NULL, 0, (int *)0);
return 0;
}
"
HAVE_SOLARIS_STYLE_GETHOST)
SET(NO_ALARM 1 CACHE BOOL "No need to use alarm to implement timeout")
# As a consequence of ALARMs no longer being used, thread
# notification for KILL must close the socket to wake up
# other threads.
SET(SIGNAL_WITH_VIO_CLOSE 1)
MARK_AS_ADVANCED(NO_ALARM)
CHECK_CXX_SOURCE_COMPILES("
int main()
{
char x=1;
short y=1;
int z=1;
long w = 1;
long long s = 1;
x = __atomic_add_fetch(&x, 1, __ATOMIC_SEQ_CST);
y = __atomic_add_fetch(&y, 1, __ATOMIC_SEQ_CST);
z = __atomic_add_fetch(&z, 1, __ATOMIC_SEQ_CST);
w = __atomic_add_fetch(&w, 1, __ATOMIC_SEQ_CST);
return (int)__atomic_load_n(&s, __ATOMIC_SEQ_CST);
}"
HAVE_GCC_C11_ATOMICS_WITHOUT_LIBATOMIC)
IF (HAVE_GCC_C11_ATOMICS_WITHOUT_LIBATOMIC)
SET(HAVE_GCC_C11_ATOMICS True)
ELSE()
SET(OLD_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
LIST(APPEND CMAKE_REQUIRED_LIBRARIES "atomic")
CHECK_CXX_SOURCE_COMPILES("
int main()
{
char x=1;
short y=1;
int z=1;
long w = 1;
long long s = 1;
x = __atomic_add_fetch(&x, 1, __ATOMIC_SEQ_CST);
y = __atomic_add_fetch(&y, 1, __ATOMIC_SEQ_CST);
z = __atomic_add_fetch(&z, 1, __ATOMIC_SEQ_CST);
w = __atomic_add_fetch(&w, 1, __ATOMIC_SEQ_CST);
return (int)__atomic_load_n(&s, __ATOMIC_SEQ_CST);
}"
HAVE_GCC_C11_ATOMICS_WITH_LIBATOMIC)
IF(HAVE_GCC_C11_ATOMICS_WITH_LIBATOMIC)
SET(HAVE_GCC_C11_ATOMICS True)
ENDIF()
SET(CMAKE_REQUIRED_LIBRARIES ${OLD_CMAKE_REQUIRED_LIBRARIES})
ENDIF()
IF(WITH_VALGRIND)
SET(HAVE_valgrind 1)
ENDIF()
CHECK_INCLUDE_FILES("valgrind/memcheck.h;valgrind/valgrind.h"
HAVE_VALGRIND_MEMCHECK_H)
#--------------------------------------------------------------------
# Check for IPv6 support
#--------------------------------------------------------------------
CHECK_INCLUDE_FILE(netinet/in6.h HAVE_NETINET_IN6_H)
IF(UNIX)
SET(CMAKE_EXTRA_INCLUDE_FILES sys/types.h netinet/in.h sys/socket.h)
IF(HAVE_NETINET_IN6_H)
SET(CMAKE_EXTRA_INCLUDE_FILES ${CMAKE_EXTRA_INCLUDE_FILES} netinet/in6.h)
ENDIF()
ELSEIF(WIN32)
SET(CMAKE_EXTRA_INCLUDE_FILES ${CMAKE_EXTRA_INCLUDE_FILES} winsock2.h ws2ipdef.h)
ENDIF()
MY_CHECK_STRUCT_SIZE("sockaddr_in6" SOCKADDR_IN6)
MY_CHECK_STRUCT_SIZE("in6_addr" IN6_ADDR)
IF(HAVE_STRUCT_SOCKADDR_IN6 OR HAVE_STRUCT_IN6_ADDR)
SET(HAVE_IPV6 TRUE CACHE INTERNAL "")
ENDIF()
# Check for sockaddr_storage.ss_family
# It is called differently under OS400 and older AIX
CHECK_STRUCT_HAS_MEMBER("struct sockaddr_storage"
ss_family "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SOCKADDR_STORAGE_SS_FAMILY)
IF(NOT HAVE_SOCKADDR_STORAGE_SS_FAMILY)
CHECK_STRUCT_HAS_MEMBER("struct sockaddr_storage"
__ss_family "${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SOCKADDR_STORAGE___SS_FAMILY)
IF(HAVE_SOCKADDR_STORAGE___SS_FAMILY)
SET(ss_family __ss_family)
ENDIF()
ENDIF()
#
# Check if struct sockaddr_in::sin_len is available.
#
CHECK_STRUCT_HAS_MEMBER("struct sockaddr_in" sin_len
"${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SOCKADDR_IN_SIN_LEN)
#
# Check if struct sockaddr_in6::sin6_len is available.
#
CHECK_STRUCT_HAS_MEMBER("struct sockaddr_in6" sin6_len
"${CMAKE_EXTRA_INCLUDE_FILES}" HAVE_SOCKADDR_IN6_SIN6_LEN)
SET(CMAKE_EXTRA_INCLUDE_FILES)
CHECK_STRUCT_HAS_MEMBER("struct dirent" d_ino "dirent.h" STRUCT_DIRENT_HAS_D_INO)
CHECK_STRUCT_HAS_MEMBER("struct dirent" d_namlen "dirent.h" STRUCT_DIRENT_HAS_D_NAMLEN)
SET(SPRINTF_RETURNS_INT 1)
CHECK_INCLUDE_FILE(ucontext.h HAVE_FILE_UCONTEXT_H)
IF(NOT HAVE_FILE_UCONTEXT_H)
CHECK_INCLUDE_FILE(sys/ucontext.h HAVE_FILE_UCONTEXT_H)
ENDIF()
IF(HAVE_FILE_UCONTEXT_H)
CHECK_FUNCTION_EXISTS(makecontext HAVE_UCONTEXT_H)
ENDIF()
CHECK_STRUCT_HAS_MEMBER("struct timespec" tv_sec "time.h" STRUCT_TIMESPEC_HAS_TV_SEC)
CHECK_STRUCT_HAS_MEMBER("struct timespec" tv_nsec "time.h" STRUCT_TIMESPEC_HAS_TV_NSEC)
IF(NOT MSVC)
CHECK_C_SOURCE_COMPILES(
"
#define _GNU_SOURCE
#include <fcntl.h>
#include <linux/falloc.h>
int main()
{
/* Ignore the return value for now. Check if the flags exist.
The return value is checked at runtime. */
fallocate(0, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE, 0, 0);
return(0);
}"
HAVE_FALLOC_PUNCH_HOLE_AND_KEEP_SIZE
)
ENDIF()
MY_CHECK_C_COMPILER_FLAG("-Werror")
IF(have_C__Werror)
SET(SAVE_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Werror")
CHECK_C_SOURCE_COMPILES("
#include <unistd.h>
int main()
{
pid_t pid=vfork();
return (int)pid;
}"
HAVE_VFORK
)
SET(CMAKE_REQUIRED_FLAGS ${SAVE_CMAKE_REQUIRED_FLAGS})
ENDIF()
IF(CMAKE_C_COMPILER_ID MATCHES "Intel")
MY_CHECK_AND_SET_COMPILER_FLAG("-no-ansi-alias")
MY_CHECK_AND_SET_COMPILER_FLAG("-fp-model precise")
ENDIF()
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