SmallC and sscanf

[Altera_Forum]

Hi folks- 

 In my NIOS2 project I started using sscanf() to parse text strings. The linker complains that sscanf is not found. Research tells me turn off the SmallC option on the nios2-elf-gcc command line (disable "-msmallc"). Looking at the properties of project, nios2-elf-gcc doesn't explicitly state the -msmallc option. So I conclude there must be another way to control the use of the SmallC library.   Can anyone tell me the right way to turn on link support for sscanf()?   Thanks, John.

[Altera_Forum]

Actually I would generally avoid using any of the scanf family of functions. They are very difficult to use properly - ie verifying all input and without leaving the code open to expliots. 

Use strtoul() and friends to parse numbers and str* (but not strtok) for stings.

[Altera_Forum]

It turns out exclusion or inclusion of the Small C library is controlled using a checkbox in the System Library Properties dialog box. 

 JJS