extended sys::pipe() to accept the third argument, flags, in awk
changed sys::read() and sys::write to return -2 and -3 upon EAGAIN and EINTR respectively
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@ -118,8 +118,8 @@ dnl check functions
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AC_CHECK_FUNCS([uselocale])
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AC_CHECK_FUNCS([mbrlen mbrtowc wcrtomb])
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AC_CHECK_FUNCS([mbsnrtowcs mbsrtowcs wcsnrtombs wcsrtombs])
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AC_CHECK_FUNCS([wctype iswctype wctrans towctrans])
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AC_CHECK_FUNCS([isblank iswblank])
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AC_CHECK_FUNCS([wctype iswctype wctrans towctrans isblank iswblank])
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AC_CHECK_FUNCS([snprintf _vsnprintf _vsnwprintf])
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AC_CHECK_FUNCS([lseek64 ftruncate64 readdir64 dirfd])
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AC_CHECK_FUNCS([stat64 fstat64 lstat64 fstatat64])
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AC_CHECK_FUNCS([fstat fstatat])
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@ -130,8 +130,7 @@ AC_CHECK_FUNCS([sysconf prctl fdopendir setrlimit getrlimit getpgid getpgrp])
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AC_CHECK_FUNCS([backtrace backtrace_symbols])
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AC_CHECK_FUNCS([fork vfork posix_spawn gettid nanosleep select])
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AC_CHECK_FUNCS([makecontext swapcontext getcontext setcontext])
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AC_CHECK_FUNCS([snprintf _vsnprintf _vsnwprintf])
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AC_CHECK_FUNCS([accept4 sendmsg recvmsg writev readv])
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AC_CHECK_FUNCS([pipe2 accept4 sendmsg recvmsg writev readv])
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OLDLIBS="$LIBS"
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LIBS="$LIBM $LIBS"
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