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Add strlcpy() function and implementation, and use configure to detect
if strlcpy() is natively available on the system.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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OpenWatcom 1.8 has a C99 mode, which implements _Bool and
<stdbool.h>. Unfortunately the implementation is broken, and doesn't
let _Bool be implicitly converted to integer (as required by the C99
spec). Detect this case in autoconf.
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For PostScript to PDF conversion, use whichever of "acrodist",
"ps2pdf", or "pstopdf" which we can find on the system. I haven't
tried either acrodist or pstopdf myself, only going my the
documentation, but prefer acrodist since it is claimed to produce
smaller output files than ps2pdf.
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Littleendian = least signficant byte first
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Put the appropriate machinery in place to be able to use the "inline"
and "restrict" keywords with appropriate semantics.
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Use autoconf to detect littleendian word order, and use
WORDS_LITTLEENDIAN instead of X86_MEMORY when we don't require
unaligned memory accesses to be permitted.
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Some platforms apparently feel -std=c99, which defines
__STRICT_ANSI__, should also hide a bunch of function prototypes.
This rather sucks. At least try to deal with it.
MinGW and DJGPP both have this problem, in particular.
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If MinGW is detected, undefine __STRICT_ANSI__ in compiler.h instead.
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mingw makes a bunch of prototypes unavailable if __STRICT_ANSI__ is
defined. However, they are still detected by configure, which causes
us pain.
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AC_USE_SYSTEM_EXTENSIONS requires autoconf 2.61, which is still a
little too new, apparently. Unless we have a specific reason to
include it, don't.
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Both C and C++ have "bool", "true" and "false" in lower case; C
requires <stdbool.h> for this, in C++ it is an inherent type built
into the compiler. Use those instead of the old macros; emulate with
a simple typedef enum if unavailable.
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AC_USE_SYSTEM_EXTENSIONS is really, *really* useful, but apparently
requires autoconf 2.61...
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Concentrate compiler dependencies to compiler.h; make sure compiler.h
is included first in every .c file (since some prototypes may depend
on the presence of feature request macros.)
Actually use the conditional inclusion of various functions (totally
broken in previous releases.)
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AC_SUBST_FILE happened to work in autoconf 2.59, but is broken in
autoconf 2.61.
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To deal with fools^Wpeople trying to keep really old systems alive,
create a proper framework for substitution functions, and make it
possible to deal with the lack of snprintf/vsnprintf in particular.
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Some versions of MSVC have snprintf() and vsnprintf() only with a
leading underscore. Handle that a bit more cleanly.
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Remove CVS $Id$ tags, since git doesn't use them.
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We can actually test for the options being accepted, rather than try
to test for gcc; this handles differences between gcc versions as well
as compilers with a similar command line set.
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- Remove obsolete types like "uint32"; use "uint32_t" consistently.
- Make sure we include <inttypes.h> where needed.
- Header file guards should be FOO_H or SUBDIR_FOO_H; _FOO_H infringes
on the C implementation's namespace and should only be used when
writing libc!
- Change a few "int8_t" back to "char" where appropriate. There are
a lot more places where that should be done, though.
- Clean up the check for getuid/getgid in rdoff/rdlar.h.
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compile flag from -ansi to -std=c99
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the running of configure on the existence of config.h.in.
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actually *use* the resulting configuration file, but it keeps autoconf
from creating an insanely long compiler command line, which can cause
problems all by itself. Eventually we can do:
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
... to get the same information.
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"make cleaner" cleans up all that it needs to clean up
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