GCC garbage collection enabled, not tested

Makefile

@@ -67,13 +67,16 @@ CFLAGS=-I. $(INC) -g -mmcu=$(MCU) -O$(OPTLEVEL) \
     -fno-inline-functions                       \
     -fno-inline-small-functions                 \
     -fno-split-wide-types                       \
-	-fpack-struct -fshort-enums                 \
-	-funsigned-bitfields -funsigned-char        \
+	-fpack-struct                               \
+    -fshort-enums                               \
+	-funsigned-bitfields                        \
+    -funsigned-char                             \
 	-Wall -Wstrict-prototypes                   \
+    -Wl,--gc-sections                           \
+    -Wl,--print-gc-sections                     \
+    -ffunction-sections -fdata-sections         \
 	-Wa,-ahlms=$(firstword                      \
-    --gc-sections                               \
-    --print-gc-sections                         \
-	$(filter %.lst, $(<:.c=.lst)))
+	    $(filter %.lst, $(<:.c=.lst)))
 ASMFLAGS =-I. $(INC) -mmcu=$(MCU)               \
 	-x assembler-with-cpp                       \
 	-DF_CPU=16500000	                        \

sha1.c

@@ -103,7 +103,7 @@ void sha1_fill(int32_t len){
 	}
 }
 
-/*void sha1(char* msg, int32_t len){
+void sha1(char* msg, int32_t len){
 	int32_t i;
 	uint8_t j;
 	sha1_init();
@@ -120,7 +120,7 @@ void sha1_fill(int32_t len){
 			sha1_addbyte(msg[i+j]);
 		}
 	}
-}*/
+}
 
 void sha1_init(void){
     chunk_cnt=0;

test.c

@@ -62,7 +62,5 @@ int main(){
     hmac(MSG2,8,sec,20);
     SHA1STR();
     printf("HMAC: %s\n",sha1sum);
-    //assert(strcmp("b617318655057264e28bc0b6fb378c8ef146be00",sha1sum)==0);   
-
-    
+    //assert(strcmp("b617318655057264e28bc0b6fb378c8ef146be00",sha1sum)==0);      
 }