National Instruments 320685D-01 ユーザーズマニュアル

Chapter 5

UNIX Compiler/Linker Issues

LabWindows/CVI Programmer Reference Manual

5-6

©

 National Instruments Corporation

In general, you can load objects compiled with the Sun compilers and the GNU 

gcc

 compiler 

into LabWindows/CVI, with a few restrictions.

You can use externally compiled modules with the following restrictions:

•

The objects must not use any data types that are incompatible with the LabWindows/CVI 
compiler or libraries. Incompatible data types include the following:

–

long

 

double

 with any Sun compilers. A Sun compiler implements 

long

 

double

 

as a 16-byte object, but LabWindows/CVI implements it as an 8-byte object.

–

long

 

long

 with the Solaris 2 Sun compiler. LabWindows/CVI does not support this 

non-ANSI type.

–

Any enumeration type. Many compilers implement enumeration types with different 
sizes and values.

•

You cannot load a Solaris 2 object file when you run LabWindows/CVI under Solaris 1. 
However, you can load Solaris 1 objects when you run under Solaris 2. 

You can compile external modules using LabWindows/CVI header files instead of the headers 
the compiler supplies. To compile this way, you must define the preprocessor macro 

_NI_sparc_ 

to the value 

1

 for Solaris 1 or to the value 

2

 for Solaris 2.

When using the Sun ANSI C compiler, use the 

-I

 flag to add the LabWindows/CVI include 

directory to the search list, as shown in the following command lines:

Solaris 1: acc -Xc -I/home/cvi/include -D_NI_sparc_=1 -c mysource.c

Solaris 2: cc -Xc -I/home/cvi/include -D_NI_sparc_=2 -c mysource.c

When using the GNU compiler, use the 

-nostdinc

 flag to disable the standard include files 

and the 

-I

 flag to add the LabWindows/CVI include directory to the search list. Also, you 

must use the 

-ansi

 flag. For example, to compile the file 

mysource.c

 using 

LabWindows/CVI headers under Solaris 1, use the following command line.

gcc -ansi -nostdinc -I/home/cvi/include -D_NI_sparc_=1 -c mysource.c

You might see warnings about conflicting types for the built-in functions 

memcmp

 and 

memcpy

, but you can ignore them.

/home/cvi/include

00ProRef.book : 06chap05.fm  Page 6  Monday, March 9, 1998  3:23 PM