GENERAL: CHECK USAGE OF SPECIFIC COMPILER VERSIONS

Information in this article applies to:

• C51 All Versions
• C166 All Versions
• C251 All Versions
• CARM All Versions
• µVision Version 3

QUESTION

I know that I can setup a specific path to the toolchain which basically allows me to switch the tool chain version. This path setup is even stored in the *.UV2 project file. However, I would like to ensure that a specific toolset version is used for my project.

Can I check the version number in my source code?

ANSWER

You may use the predefined macro constant _ _ C51 _ _, _ _ CX51 _ _, _ _ C166 _ _, _ _ C251 _ _, or _ _ CA _ _ compiler

which returns the version number of the compiler. This version number can be verified using preprocessor directives as shown below:

#if (__C51__ < 700) || (__C51__ > 799)
 #error "Requires C51 Compiler V7.xx"
#endif

It is enough when just one C source module contains this version number check, since µVision is using the same compiler version for all compilation runs.

MORE INFORMATION

• Refer to Predefined Macros in the Cx51 User's Guide.
• Refer to Predefined Macros in the C166 User's Guide.
• Refer to Predefined Macros in the C251 User's Guide, available on request from Technical Support (C251.pdf).
• Refer to Predefined Macros in the CARM User's Guide.

SEE ALSO

• µVision: USING MULTIPLE COMPILER VERSIONS
• GENERAL: ARCHIVE TOOL VERSIONS
• C51: USING VERSION 6.12 WITH A VERSION 8 INSTALLATION

Last Reviewed: Thursday, January 11, 2007