Add a redundant cast in watcom_switch_hack() to quiet a Watcom
warning, and remove open-coded implementation of the Watcom switch
hack.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
HAVE_DECL_* are 0/1 not ifdef; use HAVE_DECL_STRNLEN to see if we need
to declare this, lest stdlib/strnlen.c fails to compile.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Avoid type promotion due to ?:, and put in a comment to explain what
the heck the purpose is of wrapping default in a macro.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Use sizeof() to prevent the compiler from invoking
watcom_switch_hack() unnecessarily. Hopefully the optimizer would be
smart enough to recognize this inherently, but this is an old compiler
we are dealing with, so make life a little easier for it.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
OpenWatcom still doesn't have proper support for 64-bit switch
statements. Hack around it in a truly vile way.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Instead of using hacks or compiler-specific features, if we have
standard features as defined in ISO C11, use them.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Use autoconf to detect function attributes; some compilers like Sun CC
do support some gcc-style attributes, but don't define __GNUC__. Also
-U__STRICT_ANSI__ already in configure.ac so our tests match what we
might eventually encounter.
Add const_func and pure_func attributes.
Decorate functions in nasmlib.h with const_func and pure_func.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Move the canned OpenWatcom configuration file to config/watcom.h.
Also exclude config/config.h from being a dependency for MSVC.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Apparently, at least on some OS/2 compilers, <sys/types.h> needs to be
included for off_t to be defined. This seems like a generically good
idea to include this header whenever it is available.
Remove reference to <types.h>. This was supposedly for MSVC, but
there is no actual evidence that it is useful beyond <sys/types.h>.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
For newer gcc attributes, we can use __has_attribute() to test for
attribute presence. This improves compatibility both with older gcc
and with clang, at least with -Werror enabled.
Reported-by: Daniel Lundqvist <daniel@malarhojden.nu>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Instead of trying to do hacks in the Makefiles, define header files
for specific compilers if they can't use autoconf. Currently defined
for Microsoft Visual Studio, based on MSDN documentation. It is
currently untested.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Make the source code easier to understand and keep track of by
organizing it into subdirectories depending on the function.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
