User guide

C-52

Compile-Time Options

arguments:

%vcs top.v test.c -CFLAGS "-I$VCS_HOME/include"

%setenv CWD ‘pwd‘

%vcs top.v test.c -CFLAGS "-I$CWD/include"

%vcs top.v test.c -CFLAGS "-I../include"

Note:

The reason to enter "../include" is because VCS creates a default

csrc directory where it runs gcc commands. The csrc directory is

under your current working directory. Therefore, you need to

specify the relative path of the include directory to the csrc

directory for gcc C compiler. Further, you cannot edit files in the

csrc because VCS automatically creates this directory.

-cpp

Specifies the C++ compiler.

Note:

If you are entering a C++ file, or an object file compiled from a

C++ file, on the vcs command line, you must tell VCS to use

the standard C++ library for linking. To do this enter the

-lstdc++ linker flag with the -LDFLAGS compile-time option.

For example:

vcs source.v source.cpp -P my.tab \

-cpp /net/local/bin/c++ -LDFLAGS -lstdc++

-jnumber_of_processes

Specifies the number of processes that VCS forks for parallel

compilation. There is no space between the "j" character and the

number. You can use this option in any compilation mode: directly

generating object files from the parallel compilation of your Verilog

source files (-gen_obj, default on the HP, Solaris, and Linux