Epson S5U1C17001C Manual page 71

-Werror-implicit-function-declaration
Error output for undeclared functions
Function:
Description: This outputs an error if an undeclared function is used in a C source file.
Default: An error is not output even if an undeclared function is used in a C source file.
-mno-sjis-filt (gcc3 only)
Disable the filter function for the Shift JIS code
Function:
Description: This option disables the filter function for the Shift JIS code.
For detailed information on this filter function, refer to Section 4.5, "Filter Function for Shift JIS Code."
Default: The preprocessor performs filtering for Shift JIS code.
-xassembler-with-cpp
Invoking C preprocessor
Function:
Description: When this option is specified, the cpp C preprocessor will be executed before the source is assembled. This
allows assembly sources to include preprocessor instructions (#define, #include, etc.).
Default: The C preprocessor is not invoked.
-Wa,<option>
Function: Specify an assembler option
Description: The specified option will be passed to the assembler. To specify two or more options, input as many instances of
-Wa,<option> as necessary.
Default: No option will be passed to the assembler.
When entering options in the command line, you need to place one or more spaces before and after the option.
Example: xgcc -c -gstabs test.c
Note: • Be aware that the compile processing will be unsteady if the same compiler option is specified twice or
more with different settings.
• Be sure to specify one of the -S, -E or -c options when invoking xgcc. If none is specified, xgcc
continues processing until the linkage stops. Thus, the necessary linker options must also be specified.
• With gcc3, generate all the objects to be linked using the same -mpointer16 and -mshort-offset
option combination in compiling and assembling. Objects that were generated with different option
specifications may not be linked normally.
Example of compiling:
xgcc -B$(TOOL_DIR)/ -c -O -gstabs -fno-builtin -I$(TOOL_DIR)/include -mpointer16
–mshort-offset main.c
When the -c option is specified, the -mpointer16 option will also be passed to the assembler.
Example of assembling:
xgcc -B$(TOOL_DIR)/ -c -xassembler-with-cpp -Wa,--gstabs
-Wa,-mpointer16 boot.s
After boot.s is processed in the preprocessor, it will be assembled with the -mpointer16 option
specified.
S5U1C17001C Manual
(Rev. 1.0)
Seiko Epson Corporation
4 C Compiler
4-7