split off the autogenerated file into nbtool_config_internal.h,
and let nbtool_config.h be a file with the proper wrappers.
This way you can just change configure.ac, run autoconf and autoheader,
verify the result, and commit, but don't have to edit nbtool_config*in
manually every time.
it's (more) consistent in the tree; this, along with changing tools/compat's
autoconf detection from AC_CHECK_FUNCS to AC_CHECK_DECLS makes the vast
majority of htobe16 and friends' redefinition errors bite the dust.
Tested with -current and FreeBSD.
this is not currently being used and should be replaced with
HAVE_STRUCT_STATVFS_F_IOSIZE, but that will be done separately.
This commit should be able to be safely pulled up to
the netbsd-2-0 branch to address PR toolchain/26415
_NETBSD_SOURCE as this makes cross building from older/newer versions of
NetBSD harder, not easier (and also makes the resulting tools 'different')
Wrap all required code with the inclusion of nbtool_config.h, attempt to
only use POSIX code in all places (or when reasonable test w. configure and
provide definitions: ala u_int, etc).
Reviewed by lukem. Tested on FreeBSD 4.9, Redhat Linux ES3, NetBSD 1.6.2 x86
NetBSD current (x86 and amd64) and Solaris 9.
Fixes PR's: PR#17762 PR#25944
* Rename "config.h" to "nbtool_config.h" and
HAVE_CONFIG_H to HAVE_NBTOOL_CONFIG_H.
This makes in more obvious in the source when we're using
tools/compat/config.h versus "standard autoconf" config.h
* Consistently move the inclusion of nbtool_config.h to before
<sys/cdefs.h> so that the former can provide __RCSID() (et al),
and there's no need to protect those macros any more.
These changes should make it easier to "tool-ify" a program by adding:
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
to the top of the source files (for the general case).
apb