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Introduction - Getting Started
Each component of the compiler creates a file that the next component
uses as input (for example, the preprocessor creates an input file for the
parser). Each component names its output file by using the source fi-
lename with special extensions that indicate which component created
the file.
This example uses and creates the following files:
a)
The source file function. c is input for the preprocessor; the pre-
processor creates a modified C source file called function. cpp.
b)
function. cpp is input for the parser; the parser creates an inter-
mediate file called function. if.
c)
function. if is input for the code generator; the code generator
creates an assembly language file called function. asm.
d)
function. asrn is input for the assembler; the assembler creates
an object file called function. obj.
3)
The final output of the batch file is an object file. This example creates
an object file called function. obj.
To create an executable object
module, link the object file created by the batch file with the runtime-
support library rts .1ib:
gsp1nk
-c
function
-0
function. out
-1 rts.1ib
This examples uses the -c linker option because the code came from a
C program. The -I option tells the linker that the input file rts .1ib is
an object library.
The
-0
option names the output module, func-
tion. out; if you don't use the
-0
option, the linker names the output
module a.out.
You can find more information about invoking the compiler, the assembly
language tools, and the batch files in the following sections:
Page
3.1 Preprocessor (gspcpp) Description ........................................................ 3-2
3.2 Parser (gspcc) Description ....................................................................... 3-6
3.3 Code Generator (gspcg) Description ...................................................... 3-8
3.4 Compiling and Assembling a Program ................................................. 3-11
3.5 Linking a C Program ............................................................................... 3-13
1-7
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