Can't compile SysUtils.pas, Please Help

When I try to compile Sysutils.pas I get these messages:

[PascalFehler] sysutils.pas(1271): Unsatisfied forward or external
declaration: 'FloatToText'.
[PascalFehler] sysutils.pas(1390): Unsatisfied forward or external
declaration: 'FloatToTextFmt'.
[PascalFehler] sysutils.pas(1417): Unsatisfied forward or external
declaration: 'TextToFloat'.
[PascalFehler] sysutils.pas(1449): Unsatisfied forward or external
declaration: 'FloatToDecimal'.

Can anybody help?
PLEASE !!!!