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AN3350

Using build tools

Doc ID 018512 Rev 2

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Using build tools

The eTPU build tools may be invoked from the command-line. These command-line tools

operate almost identically to their counterparts in an Integrated Development Environment

(IDE). Command-line compilers and assemblers translate source code files into object code

files. Command-line linkers then combine one or more object code files to produce an

executable image file, ready to load and execute on the target platform. Each command-line

tool has options that you configure when you invoke the tool.

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Configuring command-line tools

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Invoking command-line tools

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Getting help

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File name extensions

2.1

Configuring command-line tools

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Setting environment variables

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Setting the PATH environment variable

2.1.1

Setting environment variables

Use environment variables on the host system to specify to the command line tools where to

find files for compiling and linking. Table 1 describes these environment variables.

A system header file is a header file that is enclosed with the “<“ and “>” characters in

include directives. For example

#include <stdlib.h> /* stdlib.h system header. */

Typically, you define the MWCIncludes and MWLibraries environment variables to refer

to the header files and libraries in the subdirectories of your software.

To specify more than one directory for the MWCIncludes and MWLibraries variables, use

the conventional separator for your host operating system command-line shell.

Example 1 Setting environment variables in Microsoft® Windows® operating systems

rem Use ; to separate directory paths

set CWFolder=C:\Program Files\STMicroelectronics\eTPU Build Tools

v1.2

set MWCIncludes="%CWFolder%\include"

set set MWLibraries="%CWFolder%\lib"

Table 1.

Environment variables for command-line tools

This environment variable...

specifies this information

MWCIncludes

Directories on the host system for system header

files for the compiler.

MWLibraries

Directories on the host system for system libraries

for the linker.

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