Dropping unused functions out of linked file
Ian Lance Taylor
Thu May 26 00:24:00 GMT 2005
"Brian Smith" <firstname.lastname@example.org> writes:
> Is there any way during the link or compile processes to drop out
> functions and variables that are not used? Part of my source code
> includes generic modules provided by another vendor and I only need
> about 30% of the code that is in those source files. The optimisation
> -Os does not drop them out and I can see no options in the link
> process to do this. I am using the MSP430 port of gcc though this
> seems to be a GCC thing rather than specific to the MSP430 port.
Compile with -ffunction-sections -fdata-sections. Link with
-Wl,--gc-sections. This only works if you are using the GNU linker.
More information about the Gcc-help