coh@gcm (Craig Hilsenrath) (05/15/91)
Version 4.1 of SunOS claims to be making strides towards SVR4 compatibility.
Under previous releases of SunOS the definitions od to{upper,lower} were
found in /usr/include/ctype.h. However under SunOS 4.1.1 these definitions
are found in /usr/include/pcfs/pc_dir.h. Is this compatible with SVR4? I
don't think so, however I may be wrong.guy@auspex.auspex.com (Guy Harris) (05/20/91)
>Version 4.1 of SunOS claims to be making strides towards SVR4 compatibility. >Under previous releases of SunOS the definitions od to{upper,lower} were >found in /usr/include/ctype.h. However under SunOS 4.1.1 these definitions >are found in /usr/include/pcfs/pc_dir.h. In SunOS 4.1[.x], they apparently decided to make "toupper()" and "tolower()" be subroutines even in the BSD environment; they were always subroutines in the S5 environment, because they're subroutines in S5 (because the S5 versions actually check whether what's being "toupper"ed is a lower-case letter, and leave it alone if it isn't, and *vice versa*). Dunno if this was done to support character sets such as ISO Latin #1 or not. So the definitions are found in "/usr/lib/libc.{a,so.X.Y}" in the BSD environment, and in "/usr/5lib/libc.{a,so.X.Y}" in the S5 environment (for appropriate values of X and Y). The versions in "/usr/include/pcfs/pc_dir.h" are there only for the benefit of the kernel code in the PCFS file system (DOS file system); they are *N*O*T* intended to be used by ordinary programs. >Is this compatible with SVR4? Yes. S5R4, like other S5 systems, has "toupper()" and "tolower()" as subroutines in the C library, not as macros.