sdcclib ?

[0wwafa]

I don't have sdcclib command.
I installed it using apt install sdcc

$ sdcc --version
SDCC : mcs51/z80/z180/r2k/r3ka/gbz80/tlcs90/ez80_z80/ds390/TININative/ds400/hc08/s08/stm8/pdk13/pdk14/pdk15 4.0.0 #11528 (Linux)
published under GNU General Public License (GPL)

[0wwafa]

change the lib makefile to:

SHELL := /bin/bash

AS8051?=sdas8051
SDAR?=sdar
SOURCES = serial.c i2c.c delay.c setupdat.c gpif.c eputils.c $(wildcard interrupts/*.c)
FX2_OBJS = $(patsubst %.c,%.rel, $(SOURCES)) usbav.rel
INCLUDES = -I../include
SDCC = sdcc -mmcs51 $(SDCCFLAGS)
LIBS = fx2.lib

all: $(LIBS)

$(LIBS): $(FX2_OBJS)
        $(SDAR) -rc fx2.lib $?

usbav.rel: usbav.a51
        $(AS8051) -logs usbav.a51

%.rel: %.c
        $(SDCC) $(INCLUDES) -c $< -o $@

clean:
        rm -f *.{asm,ihx,lnk,lst,map,mem,rel,rst,sym,adb,cdb,lib}
        rm -f interrupts/*.{asm,ihx,lnk,lst,map,mem,rel,rst,sym,adb,dcb,lib}

it compiles the lib but not your examples:

make[2]: Entering directory '/home/0wwafa/fx2xum/test/fx2lib/examples/bulkloop'
mkdir -p build
for a in dscr.a51; do \
 cp $a build/; \
 cd build && sdas8051 -logs `basename $a` && cd ..; done
for s in bulkloop.c; do \
 THISREL=$(basename `echo "$s" | sed -e 's/\.c$/\.rel/'`); \
 sdcc -mmcs51  --code-size 0x3c00 --xram-size 0x0200 --xram-loc 0x3c00 -Wl"-b DSCR_AREA=0x3e00" -Wl"-b INT2JT=0x3f00" -c -I ../..//include -I "" $s -o build/$THISREL ; done
../..//include/serial.h:54: error 91: extern definition for 'putchar' mismatches with declaration.
/usr/bin/../share/sdcc/include/stdio.h:86: error 177: previously defined here
../..//include/serial.h:55: error 91: extern definition for 'getchar' mismatches with declaration.
/usr/bin/../share/sdcc/include/stdio.h:85: error 177: previously defined here
make[2]: *** [../../lib/fx2.mk:86: build/bulkloop.ihx] Error 1