configure.ac: some versions of linux/if.h require including sys/socket.h
Related: OS#3230 Change-Id: Iba869a75745cea01024fa3ce04917c02fa608a13
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@ -74,8 +74,12 @@ AC_HEADER_STDC
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AC_HEADER_SYS_WAIT
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AC_CHECK_HEADERS([arpa/inet.h fcntl.h netdb.h netinet/in.h stdint.h stdlib.h string.h sys/ioctl.h sys/socket.h sys/time.h unistd.h])
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# Check for if header
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AC_CHECK_HEADERS([linux/if.h net/if.h])
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# Check for if header. Some versions of linux/if.h fail without sys/socket.h included beforehand:
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# see https://algorithmicallyrandom.blogspot.com/2012/07/error-on-including-include.html
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AC_CHECK_HEADERS([linux/if.h net/if.h], [], [], [#ifdef HAVE_SYS_SOCKET_H
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# include <sys/socket.h>
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# endif
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])
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# Check for tun header
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AC_CHECK_HEADERS([linux/if_tun.h net/if_tun.h])
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