Elf fails but no errors?

What does it mean when the ELF fails to build but there are no errors?

under problems is says there are none.
under Terminal is says FAILED: usb2llapi.elf
under that I get I few errors saying already defined. for example

`cmd.exe /C "cd . && C:\Users\Administrator\.espressif\tools\xtensa-esp-elf\esp-13.2.0_20240530\xtensa-esp-elf\bin\xtensa-esp32s3-elf-g++.exe -mlongcalls  -fno-builtin-memcpy -fno-builtin-memset -fno-builtin-bzero -fno-builtin-stpcpy -fno-builtin-strncpy -Wl,--cref -Wl,--defsym=IDF_TARGET_ESP32S3=0 -Wl,--Map=C:/Users/Administrator/Desktop/usb2llapi/usb_host_lib/build/usb2llapi.map -Wl,--no-warn-rwx-segments -fno-rtti -fno-lto -Wl,--gc-sections -Wl,--warn-common -T esp32s3.peripherals.ld -T esp32s3.rom.ld -T esp32s3.rom.api.ld -T esp32s3.rom.libgcc.ld -T esp32s3.rom.wdt.ld -T esp32s3.rom.version.ld -T esp32s3.rom.newlib.ld -T memory.ld -T sections.ld @CMakeFiles\usb2llapi.elf.rsp -o usb2llapi.elf  && cd ."`

I’m pretty sure the issue is this h file. Because I was working in it when the issue popped up. but I have the ifdef in there?

#ifndef _USB2LLAPI_H_
#define _USB2LLAPI_H_

#include <stdbool.h> //bug fix I guess?
#define _delay_ms(t) vTaskDelay(t / portTICK_PERIOD_MS);

extern unsigned char psx_pressure_data[12];
extern unsigned char mapper[24];

struct ControlData
{
	unsigned char ButtonRow1;
	unsigned char ButtonRow2;
	unsigned char ButtonRow3;
	unsigned char MainStickX;
	unsigned char MainStickY;
	unsigned char Zaxis1;
	unsigned char SecondaryStickX;
	unsigned char SecondaryStickY;
	unsigned char Zaxis2;
	unsigned char Slider;
	unsigned char Dial;
	unsigned char POV;
	unsigned char BUTTON_LAYOUT;
	bool RumbleCapable;
	bool SmallRumbling;
	bool LargeRumbling;
	bool Busy;
	bool AutoPause;
	bool DoNotReport;
	bool PSX;
	bool DDREV;
	bool DPAD_ONLY;
	bool Sensitive;
	unsigned char Type;
} ; 
extern struct ControlData padData; 



struct ModesStates
{
//do not make bool or eeprom of a FF state will be lost. 
	unsigned char UDLR;
	unsigned char HOTSWAP_DISABLED;
	unsigned char AUTO_PAUSE_DIABLED;
	unsigned char DISABLE_COMBOS;
	unsigned char HOTKEY;
	unsigned int  TURBO_SPEED;
	unsigned int  TURBO_MASKED_BUTTONS_;
	unsigned char MAPPING_SELECTION; 
	unsigned char SWAP_BUTTONS1;
	unsigned char SWAP_BUTTONS2;
	unsigned char ROTATION_SHIFT;
	unsigned char RANGE_SELECTION;
	unsigned char LATENCY;
} ;
extern struct ModesStates modes; 



typedef struct 
{
	bool          ( *init)	    (void);
	unsigned char ( *getCommand)(void);

} LLAPIDevice; 

#endif

NOTE: I tried adding the extern keyword but that didnt help.

The command is not related to PlatformIO and the question is better suited to an Espressif forum.