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Eric Blake
440a1dbe52
OpenBSD's <net/if.h> is not self-contained; this should compile:
| #define _POSIX_C_SOURCE 200809L
| #include <net/if.h>
| struct if_nameindex i;
but fails with:
In file included from foo.c:2:
/usr/include/net/if.h:112: error: expected specifier-qualifier-list before 'u_int'
...
/usr/include/net/if.h:674: error: field 'dstaddr' has incomplete type
In file included from /usr/include/net/if.h:691,
from foo.c:2:
/usr/include/net/if_arp.h:79: error: field 'arp_pa' has incomplete type
/usr/include/net/if_arp.h:80: error: field 'arp_ha' has incomplete type
*** Error code 1
We already had a test program for systems with the if_* functions
(including OpenBSD); but in adding this module, I had to enhance
that test to also work on platforms like mingw where we are now
providing a new header.
* modules/net_if: New module, borrowing ideas from netinet_in.
* m4/net_if_h.m4: New file.
* lib/net_if.in.h: Likewise.
* doc/posix-headers/net_if.texi (net/if.h): Document it.
* MODULES.html.sh (lacking POSIX:2008): Likewise.
* tests/test-net_if.c: Make function checks conditional.
Reported by Jasper Lievisse Adriaanse <jasper@humppa.nl>.
Signed-off-by: Eric Blake <eblake@redhat.com>
50 lines
1.1 KiB
Plaintext
50 lines
1.1 KiB
Plaintext
Description:
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A <net/if.h> for systems lacking it.
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Files:
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lib/net_if.in.h
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m4/net_if_h.m4
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Depends-on:
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include_next
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sys_socket
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configure.ac:
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gl_HEADER_NET_IF
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AC_PROG_MKDIR_P
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Makefile.am:
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BUILT_SOURCES += $(NET_IF_H)
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# We need the following in order to create <net/if.h> when the system
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# doesn't have one.
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if GL_GENERATE_NET_IF_H
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net/if.h: net_if.in.h $(top_builddir)/config.status
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$(AM_V_at)$(MKDIR_P) net
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$(AM_V_GEN)rm -f $@-t $@ && \
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{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
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sed -e 's|@''GUARD_PREFIX''@|${gl_include_guard_prefix}|g' \
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-e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
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-e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
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-e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
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-e 's|@''NEXT_NET_IF_H''@|$(NEXT_NET_IF_H)|g' \
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-e 's|@''HAVE_NET_IF_H''@|$(HAVE_NET_IF_H)|g' \
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< $(srcdir)/net_if.in.h; \
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} > $@-t && \
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mv $@-t $@
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else
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net/if.h: $(top_builddir)/config.status
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rm -f $@
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endif
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MOSTLYCLEANFILES += net/if.h net/if.h-t
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MOSTLYCLEANDIRS += net
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Include:
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<net/if.h>
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License:
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LGPLv2+
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Maintainer:
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Eric Blake
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