fatal error #10192: Failed linktime optimization

Hi 

In this project i have ~30 source files, and would like to use "-O4". But changing -O3 to -O4 gives a (incorrect?) error message.

The compiler is called like this:

"C:/ti/ccsv5/tools/compiler/msp430_4.2.3/bin/cl430" -vmspx --abi=eabi --code_model=large --data_model=restricted --near_data=none -O4 --opt_for_speed=0 --include_path="C:/ti/ccsv5/ccs_base/msp430/include" --include_path="C:/ti/ccsv5/tools/compiler/msp430_4.2.3/include" --advice:power="all,-5.2,-5.3" -g --float_operations_allowed=all --define=__MSP430F6659__ --diag_warning=225 --display_error_number --diag_wrap=off --silicon_errata=CPU21 --silicon_errata=CPU22 --silicon_errata=CPU40 --large_memory_model --single_inline --remove_hooks_when_inlining --printf_support=full --preproc_with_compile --preproc_dependency="main.pp" "../main.c"

And gives this output:

error: symbol "MainInt" redeclared with incompatible type:
"MainInt_t[struct $$fake54 ]"
 in "../main.c" at line 30 and:
"MainInt_t[struct $$fake91 ]"
 in "..\main.h" at line 21)

Which I believe is wrong. Changing to to -O3, removes the error.

Finally this leads to:

fatal error #10192: Failed linktime optimization
gmake: *** [msp430Mockup_F6659.out] Error 1

In main.h the structure is declared:

#ifndef MAIN_H_
#define MAIN_H_

#include <stdint.h>

typedef struct
{

uint8_t CodeNumber[20];
 uint8_t SerialNumber[20];
 uint32_t FirmwareVersion; // Firmware version id

} MainInt_t;
extern MainInt_t MainInt;

#endif /* MAIN_H_ */

In main.c it is declared global, like this:

#include......

MainInt_t MainInt;

int main(void) 

{

....

Hope that You can help me to get "-O4" working in this project. 

Best Regards,

Henrik Bork Steffensen