root@raspberrypi:~/flashrom# make
Replacing all version templates with v1.2-642-g4bee256.
C compiler found: cc (Raspbian 10.2.1-6+rpi1) 10.2.1 20210110
Target arch: arm
Target OS: Linux
Target endian: little
Dependency libpci found: yes
  Checking for old "pci_get_dev()": no
  CFLAGS: -I/usr/include/arm-linux-gnueabihf
  LDFLAGS: -lpci -lz -lresolv -ludev
Dependency libusb1 found: no
Dependency libjaylink found: no
Dependency NI-845x found: no
Dependency libftdi1 found: no
Checking for header "mtd/mtd-user.h": yes
Checking for header "linux/spi/spidev.h": yes
Checking for header "linux/i2c-dev.h": yes
Checking for header "linux/i2c.h": yes
Checking for header "sys/utsname.h": yes
Checking for function "clock_gettime": yes
Checking for external "librt": yes
cc -MMD -Os -Wall -Wextra -Wno-unused-parameter -Wshadow -Wmissing-prototypes -Wwrite-strings -Werror -I/usr/include/arm-linux-gnueabihf   -D'IS_WINDOWS=0' -D'__FLASHROM_LITTLE_ENDIAN__=1' -D'USE_IOPL=1' -D'USE_DEV_IO=0' -D'USE_IOPERM=0' -D'CONFIG_DEFAULT_PROGRAMMER_NAME=NULL' -D'CONFIG_DEFAULT_PROGRAMMER_ARGS=""' -D'CONFIG_INTERNAL=1' -D'CONFIG_INTERNAL_DMI=1' -D'CONFIG_SERPROG=1' -D'CONFIG_PONY_SPI=1' -D'CONFIG_BITBANG_SPI=1' -D'CONFIG_GFXNVIDIA=1' -D'CONFIG_SATASII=1' -D'CONFIG_ATAVIA=1' -D'CONFIG_IT8212=1' -D'CONFIG_DUMMY=1' -D'CONFIG_DRKAISER=1' -D'CONFIG_NICINTEL=1' -D'CONFIG_NICINTEL_SPI=1' -D'CONFIG_NICINTEL_EEPROM=1' -D'CONFIG_OGP_SPI=1' -D'CONFIG_BUSPIRATE_SPI=1' -D'CONFIG_LINUX_MTD=1' -D'CONFIG_LINUX_SPI=1' -D'NEED_PCI=1' -D'HAVE_UTSNAME=1' -D'HAVE_CLOCK_GETTIME=1' -D'FLASHROM_VERSION="v1.2-642-g4bee256"' -o cli_classic.o -c cli_classic.c
cli_classic.c: In function 'main':
cli_classic.c:718:13: error: format '%ld' expects argument of type 'long int', but argument 2 has type 'size_t' {aka 'unsigned int'} [-Werror=format=]
  718 |   printf("%ld\n", flashrom_flash_getsize(fill_flash));
      |           ~~^     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |             |     |
      |             |     size_t {aka unsigned int}
      |             long int
      |           %d
cc1: all warnings being treated as errors
make: *** [Makefile:968: cli_classic.o] Fehler 1