Sun Microsystems SunSoft Pascal 4.0, Руководство пользователя

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90 Pascal 4.0 User’s Guide
6
The
-c
option produces an unlinked object file. The
-calign
option causes
pc
to use C-like data formats for aggregate objects.
When you compile a Pascal main routine that calls C, you don’t have to use
any special options, but the
-calign
option is again useful. The C object
library,
libc
, is automatically brought in for every Pascal compilation.
For example:
hostname% cc -c my_c.c
hostname% pc -calign my_c.o my_pascal.p
Compatibility of Types for C and Pascal
Table 6-1 and Table 6-2 list the default sizes and alignments of compatible
types for C and Pascal.
Table 6-1 C and Pascal Size and Alignment of Compatible Types
Pascal Type C Type Size (bytes) Alignment (bytes)
double double
8 8
longreal double
8 8
real double
8 8
single float
4 4
shortreal float
4 4
integer16 short int
2 2
integer32 int
4 4
integer int
4 4
-128..127 char
1 1
boolean char
1 1
alfa char a
[10
]
10 1
char char
1 1
string char a
[80] 80 1
varying[n] of
char struct
{
int
,
char
[n]} - 4
record struct/union
- Same as element type