How to use __func__ in 8051-CodePudding

I'm trying to print functions name with __func__ macro in a 8051 project. But when I build on Keil, It has an error like this:

main.c(50): error C202: '__func__': undefined identifier

have any macro others similary? Please help me solves it.

CodePudding user response：

As the documentation says, the Keil C51 compiler does not support this macro, and apparently no other of similar functionality:

The Cx51 Compiler provides the following predefined constants you may use in preprocessor directives and C code to create portable programs.

Constant Description

__C51__ Version number of the compiler (for example, 701 for version 7.01).

__CX51__ Version number of the compiler (for example, 701 for version 7.01).

__DATE__ Date when the compilation was started in ANSI format (month dd yyyy).

__DATE2__ Date when the compilation was started in short form (mm/dd/yy).

__FILE__ Name of the file being compiled.

__LINE__ Current line number in the file being compiled.

__MODEL__ Memory model selected:
0 for SMALL,
1 for COMPACT,
2 for LARGE.

__TIME__ Time when the compilation was started. (Format: hh:mm:ss)

__STDC__ Defined to 1 to indicate full conformance with the ANSI C Standard.

Constant	Description
`__C51__`	Version number of the compiler (for example, 701 for version 7.01).
`__CX51__`	Version number of the compiler (for example, 701 for version 7.01).
`__DATE__`	Date when the compilation was started in ANSI format (month dd yyyy).
`__DATE2__`	Date when the compilation was started in short form (mm/dd/yy).
`__FILE__`	Name of the file being compiled.
`__LINE__`	Current line number in the file being compiled.
`__MODEL__`	Memory model selected: 0 for SMALL, 1 for COMPACT, 2 for LARGE.
`__TIME__`	Time when the compilation was started. (Format: hh:mm:ss)
`__STDC__`	Defined to 1 to indicate full conformance with the ANSI C Standard.