to :, so they can be used e.g. with <bsd.prog.mk>. Standardize variable
names used to configure kernel libraries.
Variables used by these Makefile.inc's are:
S must be set to the top of the 'sys' tree.
${LIB}DST may be set to the location of the directory where library
objects are to be built. Defaults to ${.OBJDIR}/lib/${lib}.
${LIB}_AS may be set to 'obj' to build a object from the library's
object files. (Otherwise, a library will be built.)
Defaults to 'library'.
${LIB}MISCMAKEFLAGS
Miscellaneous flags to be passed to the library's Makefile when
building. See library's Makefile for more details about
supported flags and their default values.
(where LIB is KERN, SA, or Z, and lib is kern, sa, or z, depending on which
library's Makefile.inc is being discussed.)
rename 'NO_NET' variable to SA_INCLUDE_NET, which defaults to 'yes' but can
be set differently. kill EXTRACFLAGS, add SACPPFLAGS (generated from
CPPFLAGS by Makefile.inc) to CFLAGS. Add support for including gzipped-file
read support, enabled by setting SA_USE_CREAD to yes (defaults to no).
best-fit, rather than first-fit, algorithm.
ability to handle free()s with zero size (needed for gzip read
support).
ability to start the heap someplace else (defined by HEAP_START).
ability to limit growth of the heap (via HEAP_LIMIT).
debugging sanity checks (ifdef DEBUG).
allocation tracing support, to help debugging (ifdef ALLOC_TRACE).
and from me:
ability to pick a (smaller) first-fit algorithm (via ALLOC_FIRST_FIT).
lots of comments.
If heap limits and all of the debugging features are disabled (the default),
and ALLOC_FIRST_FIT is defined (not the default), compiled with -O on the
alpha the new version is the same (object) size as the old version.
F_NODEV isn't set in the file flags for the file being opened.
Pointed out by Matthias Drochner in PR 3122. (fix equivalent to
the one he included, but stylistically different.)
boot blocks to load compressed images. Sources and headers are copied
from src/lib (src/lib/libz, in particular) by making the 'update-sources'
target in this directory. This library builds in a manner similar to
libkern; much of the Makefile hackery was taken from there.
these are hacks (s/long/int/, etc.), but this code really needs a heavy
cleaning (including fixed-size typing) and I don't have time to give it one
now.
assert() which always does assertion checking
unless "NDEBUG" is defined.
KASSERT() which does assertion checking if DIAGNOSTIC
is defined.
KDASSERT() which does assertion checking if DEBUG is
define. This macro exists for compatibility
with existing ports' assertion checking macros.
(Assertion checking is not typically an
"expensive" operation, and DIAGNOSTIC should be
used for inexpensive consistency checks.)
>use p->hashfraction when doing non-time-critical calculations, rather than
>using HASHFRACTION directly. in time-critical calculations, if HASHFRACTION
>is a power of two, check that p->hashfraction == HASHFRACTION and if so do
>the calculation with the compiled-in value so that the compiler can optimize
>out (potentially) expensive divisions. if p->hashfraction != HASHFRACTION,
>actually do the division. This has the result that on machines with slow
>division, the division can be optimized out of the common case, but that
>if HASHFRACTION changes from the compiled-in value (for whatever reason),
>profiling will still work. Changes suggested by Chris Torek.
Add some casts so that we're not bitten by type promotions on 64-bit
systems. Not a great concern since the only 64-bit system currently
supported by NetBSD (Alpha) uses assembly versions of these routines.
source file to libkern, it should be added to _ALL_ ports makefiles if
it is machine-independent and used by machine-independent code (in
this case adosfs). (There are several arguments that say that
strncasecmp should not be in libkern at all, and i think they're
good ones, but as long as ADOSFS needs it to link, it has to be here
for all architectures.)
cgd