net_if: new module 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>

Description:
A <stdnoreturn.h> that nearly conforms to ISO C11.

Files:
lib/stdnoreturn.in.h
m4/stdnoreturn.m4

Depends-on:
snippet/_Noreturn

configure.ac:
gl_STDNORETURN_H

Makefile.am:
BUILT_SOURCES += $(STDNORETURN_H)

# We need the following in order to create <stdnoreturn.h> when the system
# doesn't have one that works.
if GL_GENERATE_STDNORETURN_H
stdnoreturn.h: stdnoreturn.in.h $(top_builddir)/config.status $(_NORETURN_H)
	$(AM_V_GEN)rm -f $@-t $@ && \
	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
	  sed -e '/definition of _Noreturn/r $(_NORETURN_H)' \
              < $(srcdir)/stdnoreturn.in.h; \
	} > $@-t && \
	mv $@-t $@
else
stdnoreturn.h: $(top_builddir)/config.status
	rm -f $@
endif
MOSTLYCLEANFILES += stdnoreturn.h stdnoreturn.h-t

Include:
<stdnoreturn.h>

License:
LGPLv2+

Maintainer:
Paul Eggert