diff options
Diffstat (limited to 'configure.cmake')
| -rw-r--r-- | configure.cmake | 987 |
1 files changed, 987 insertions, 0 deletions
diff --git a/configure.cmake b/configure.cmake new file mode 100644 index 00000000..dbd77a6e --- /dev/null +++ b/configure.cmake @@ -0,0 +1,987 @@ +# 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() + +# workaround for old gcc on x86, gcc atomic ops only work under -march=i686 +IF(CMAKE_SYSTEM_PROCESSOR STREQUAL "i686" AND CMAKE_COMPILER_IS_GNUCC AND + CMAKE_C_COMPILER_VERSION VERSION_LESS "4.4.0") + SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=i686") + SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=i686") + # query_response_time.cc causes "error: unable to find a register to spill" + SET(PLUGIN_QUERY_RESPONSE_TIME NO CACHE BOOL "Disabled, gcc is too old") +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 (mprotect HAVE_MPROTECT) +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_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_setconcurrency HAVE_THR_SETCONCURRENCY) +CHECK_FUNCTION_EXISTS (thr_yield HAVE_THR_YIELD) +CHECK_FUNCTION_EXISTS (vasprintf HAVE_VASPRINTF) +CHECK_FUNCTION_EXISTS (vsnprintf HAVE_VSNPRINTF) +CHECK_FUNCTION_EXISTS (nl_langinfo HAVE_NL_LANGINFO) + +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_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() |