seminaries/binrep/qtrvsim_binrep: add libgcc.a to the final executable link.

The libgcc provides helper functions as __mulsi3 which are necessary
for limited rv32i instruction set to allow complete C operators
and floats use.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>

seminaries/binrep/qtrvsim_binrep/Makefile

@@ -23,6 +23,8 @@ LDFLAGS += -nostdlib
 LDFLAGS += -static
 #LDFLAGS += -specs=/opt/musl/riscv64-linux-gnu/lib/musl-gcc.specs
 
+LOADLIBES += -lgcc
+
 CFLAGS  += $(ARCHFLAGS)
 CXXFLAGS+= $(ARCHFLAGS)
 AFLAGS  += $(ARCHFLAGS)
@@ -51,7 +53,7 @@ all : default
 default : $(TARGET_EXE)
 
 $(TARGET_EXE) : $(OBJECTS)
-	$(CC) $(LDFLAGS) $^ -o $@
+	$(CC) $(LDFLAGS) $^ $(LOADLIBES) -o $@
 
 dep: depend