Arm Development Studio forum armds no link with c lib cfg failed( __use_no_semihosting)

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armds no link with c lib cfg failed( __use_no_semihosting)

WatterCutter over 1 year ago

with assembly declear:

#ifdef STANDALONE
#define USE_SERIAL_PORT 1
asm(".global __use_no_semihosting");
#endif

to exclude any c clib being linked to output file

but i get the error info as follows:

Error: L6915E: Library reports error: __use_no_semihosting was requested, but _sys_command_string was referenced.

the question is, target is aarch64 cortex-a53,

no choice for me to link micro lib

what should I do?

Top replies

Stephen Theobald over 1 year ago +1 verified

Hi My name is Stephen and I work at Arm. The error message Error: L6915E: Library reports error: __use_no_semihosting was requested, but _sys_command_string was referenced. is saying you requested no semihosting...

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0 WatterCutter 11 months ago in reply to WatterCutter

with the case you recommend,

i add some folder to extend its func,

and modified the makefile in the top folder,

before:

APP_C_SRC := $(wildcard $(SRC_DIR)/*.c) \ APP_S_SRC := $(wildcard $(ASM_DIR)/*.S) OBJ_FILES := $(APP_C_SRC:$(SRC_DIR)/%.c=$(OBJ_DIR)/%.o) \ $(APP_S_SRC:$(ASM_DIR)/%.S=$(OBJ_DIR)/%.o) DEP_FILES := $(OBJ_FILES:%=%.d)

after:

APP_C_SRC := $(wildcard $(SRC_DIR)/*.c) \

$(wildcard $(SRC_DIR)/dirx/*.c)
APP_S_SRC := $(wildcard $(ASM_DIR)/*.S)
OBJ_FILES := $(APP_C_SRC:$(SRC_DIR)/%.c=$(OBJ_DIR)/%.o) \

$(APP_C_SRC:$(SRC_DIR)/dirx/%.c=$(OBJ_DIR)/%.o)
$(APP_S_SRC:$(ASM_DIR)/%.S=$(OBJ_DIR)/%.o)
DEP_FILES := $(OBJ_FILES:%=%.d)

but it seemed to be not useful,

the compile output is the same:

12:25:54 **** Build of configuration Default for project startup_Armv8-Ax1_AC6_lab' ****
make all
mkdir obj
Compiling src/GICv3_gicd.c...
Compiling src/timer_interrupts.c...
Compiling src/sp804_timer.c...
Compiling src/main.c...
Compiling src/GICv3_gicr.c...
Compiling src/uart.c...
Compiling src/retarget.c...
Compiling asm/vectors.S...
Compiling asm/v8_aarch64.S...
Compiling asm/v8_utils.S...
Compiling asm/startup.S...
Linking startup_Armv8-Ax1_AC6.axf
Done.

12:25:56 Build Finished. 0 errors, 0 warnings. (took 2s.237ms)

no new fiels related information anyway

is there anything i missed?
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0 WatterCutter 11 months ago in reply to WatterCutter

with the case you recommend,

i add some folder to extend its func,

and modified the makefile in the top folder,

before:

APP_C_SRC := $(wildcard $(SRC_DIR)/*.c) \ APP_S_SRC := $(wildcard $(ASM_DIR)/*.S) OBJ_FILES := $(APP_C_SRC:$(SRC_DIR)/%.c=$(OBJ_DIR)/%.o) \ $(APP_S_SRC:$(ASM_DIR)/%.S=$(OBJ_DIR)/%.o) DEP_FILES := $(OBJ_FILES:%=%.d)

after:

APP_C_SRC := $(wildcard $(SRC_DIR)/*.c) \

$(wildcard $(SRC_DIR)/dirx/*.c)
APP_S_SRC := $(wildcard $(ASM_DIR)/*.S)
OBJ_FILES := $(APP_C_SRC:$(SRC_DIR)/%.c=$(OBJ_DIR)/%.o) \

$(APP_C_SRC:$(SRC_DIR)/dirx/%.c=$(OBJ_DIR)/%.o)
$(APP_S_SRC:$(ASM_DIR)/%.S=$(OBJ_DIR)/%.o)
DEP_FILES := $(OBJ_FILES:%=%.d)

but it seemed to be not useful,

the compile output is the same:

12:25:54 **** Build of configuration Default for project startup_Armv8-Ax1_AC6_lab' ****
make all
mkdir obj
Compiling src/GICv3_gicd.c...
Compiling src/timer_interrupts.c...
Compiling src/sp804_timer.c...
Compiling src/main.c...
Compiling src/GICv3_gicr.c...
Compiling src/uart.c...
Compiling src/retarget.c...
Compiling asm/vectors.S...
Compiling asm/v8_aarch64.S...
Compiling asm/v8_utils.S...
Compiling asm/startup.S...
Linking startup_Armv8-Ax1_AC6.axf
Done.

12:25:56 Build Finished. 0 errors, 0 warnings. (took 2s.237ms)

no new fiels related information anyway

is there anything i missed?
Cancel
Up 0 Down

Cancel

Children

0 Stephen Theobald 11 months ago in reply to WatterCutter

Hi again

Try this instead. Into both makefiles for startup_Armv8-Ax1_AC6 and startup_Cortex-A53x1_AC6 add:

APP_C_SRC := $(wildcard $(SRC_DIR)/*.c)
EXT_C_SRC := $(wildcard $(SRC_DIR)/dirx/*.c)
APP_S_SRC := $(wildcard $(ASM_DIR)/*.S)
OBJ_FILES := $(APP_C_SRC:$(SRC_DIR)/%.c=$(OBJ_DIR)/%.o) \
             $(EXT_C_SRC:$(SRC_DIR)/dirx/%.c=$(OBJ_DIR)/%.o) \
             $(APP_S_SRC:$(ASM_DIR)/%.S=$(OBJ_DIR)/%.o)
DEP_FILES := $(OBJ_FILES:%=%.d)

and later add a compilation rule for the new folder, for startup_Armv8-Ax1_AC6:

$(OBJ_DIR)/%.o : $(SRC_DIR)/dirx/%.c | $(OBJ_DIR)
    $(PROGRESS)
    $(QUIET) $(CC) -c $(TARGET_ARCH) $(CPPFLAGS) $(CFLAGS) -o $@ $<

and (slightly different) for startup_Cortex-A53x1_AC6:

$(OBJ_DIR)/%.o : $(SRC_DIR)/dirx/%.c | $(OBJ_DIR)
   $(PROGRESS)
   $(QUIET) $(CC) -c $(TARGET_CPU) $(CPPFLAGS) $(CFLAGS) -o $@ $<

Hope this helps

Stephen
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