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20251015荣品的PRO-RK3566开发板在buildroot下解决驱动编译异常的问题

news 2025/10/16 6:53:49

20251015荣品的PRO-RK3566开发板在buildroot下解决驱动编译异常的问题
2025/10/15 17:43

缘起：在飞凌OK3588-C的Linux R4【Linux5.10.66+ Qt5.15.2】上使用订制版本的OV5645这颗摄像头。
由于屏蔽了众多的I2C读写，众多的变量ret就没有使用了！。
没有想到搬家到荣品的PRO-RK3566的Linux上编译不过！
【Buildroot的内核版本5.10.198】

解决方法：在kernel的Makefile文件中加入-Wno-error忽略这个错误！
【当然，你也可以一个一个的干掉没有使用的ret等变量了！】

Y:\PRO-BOX-rk3568source20250911\kernel\Makefile
KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \
       -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \
       -Werror=implicit-function-declaration -Werror=implicit-int \
       -Werror=return-type -Wno-format-security \
       -std=gnu89 \
       -Wno-error \
       -w

CC fs/utimes.o
CC drivers/input/touchscreen/atmel_mxt_ts.o
CC drivers/usb/gadget/function/storage_common.o
drivers/media/i2c/ov5645.c: In function 'ov5645_write_reg':
drivers/media/i2c/ov5645.c:652:6: error: unused variable 'ret' [-Werror=unused-variable]
652 | int ret;
| ^~~
drivers/media/i2c/ov5645.c:651:5: error: unused variable 'regbuf' [-Werror=unused-variable]
651 | u8 regbuf[3];
| ^~~~~~
drivers/media/i2c/ov5645.c: In function 'ov5645_read_reg':
drivers/media/i2c/ov5645.c:673:6: error: unused variable 'ret' [-Werror=unused-variable]
673 | int ret;
| ^~~
drivers/media/i2c/ov5645.c:672:5: error: unused variable 'regbuf' [-Werror=unused-variable]
672 | u8 regbuf[2];
| ^~~~~~
drivers/media/i2c/ov5645.c: In function 'ov5645_set_aec_mode':
drivers/media/i2c/ov5645.c:700:6: error: unused variable 'ret' [-Werror=unused-variable]
700 | int ret;
| ^~~
drivers/media/i2c/ov5645.c: In function 'ov5645_set_agc_mode':
drivers/media/i2c/ov5645.c:723:6: error: unused variable 'ret' [-Werror=unused-variable]
723 | int ret;
| ^~~
drivers/media/i2c/ov5645.c: In function 'ov5645_set_register_array':
drivers/media/i2c/ov5645.c:749:5: error: unused variable 'tmp' [-Werror=unused-variable]
749 | u8 tmp;
| ^~~
drivers/media/i2c/ov5645.c:748:6: error: unused variable 'ret' [-Werror=unused-variable]
748 | int ret;
| ^~~
drivers/media/i2c/ov5645.c:747:15: error: unused variable 'i' [-Werror=unused-variable]
747 | unsigned int i;
| ^
drivers/media/i2c/ov5645.c: In function 'ov5645_set_saturation':
drivers/media/i2c/ov5645.c:877:6: error: unused variable 'ret' [-Werror=unused-variable]
877 | int ret;
| ^~~
drivers/media/i2c/ov5645.c:876:6: error: unused variable 'reg_value' [-Werror=unused-variable]
876 | u32 reg_value = (value * 0x10) + 0x40;
| ^~~~~~~~~
drivers/media/i2c/ov5645.c: In function 'ov5645_set_hflip':
drivers/media/i2c/ov5645.c:893:6: error: unused variable 'ret' [-Werror=unused-variable]
893 | int ret;
| ^~~
drivers/media/i2c/ov5645.c:892:5: error: unused variable 'val' [-Werror=unused-variable]
892 | u8 val = ov5645->timing_tc_reg21;
| ^~~
drivers/media/i2c/ov5645.c: In function 'ov5645_set_vflip':
drivers/media/i2c/ov5645.c:914:6: error: unused variable 'ret' [-Werror=unused-variable]
914 | int ret;
| ^~~
drivers/media/i2c/ov5645.c:913:5: error: unused variable 'val' [-Werror=unused-variable]
913 | u8 val = ov5645->timing_tc_reg20;
| ^~~
drivers/media/i2c/ov5645.c: In function 'ov5645_set_test_pattern':
drivers/media/i2c/ov5645.c:934:5: error: unused variable 'val' [-Werror=unused-variable]
934 | u8 val = 0;
| ^~~
drivers/media/i2c/ov5645.c: In function 'ov5645_set_awb':
drivers/media/i2c/ov5645.c:958:5: error: unused variable 'val' [-Werror=unused-variable]
958 | u8 val = 0;
| ^~~
drivers/media/i2c/ov5645.c: In function 'ov5645_probe':
drivers/media/i2c/ov5645.c:1488:19: error: unused variable 'chip_id_low' [-Werror=unused-variable]
1488 | u8 chip_id_high, chip_id_low;
| ^~~~~~~~~~~
drivers/media/i2c/ov5645.c:1488:5: error: unused variable 'chip_id_high' [-Werror=unused-variable]
1488 | u8 chip_id_high, chip_id_low;
| ^~~~~~~~~~~~
At top level:
drivers/media/i2c/ov5645.c:805:13: error: 'ov5645_set_power_off' defined but not used [-Werror=unused-function]
805 | static void ov5645_set_power_off(struct ov5645 *ov5645)
| ^~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/ov5645.c:774:12: error: 'ov5645_set_power_on' defined but not used [-Werror=unused-function]
774 | static int ov5645_set_power_on(struct ov5645 *ov5645)
| ^~~~~~~~~~~~~~~~~~~
drivers/media/i2c/ov5645.c:743:12: error: 'ov5645_set_register_array' defined but not used [-Werror=unused-function]
743 | static int ov5645_set_register_array(struct ov5645 *ov5645,
| ^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/i2c/ov5645.c:670:12: error: 'ov5645_read_reg' defined but not used [-Werror=unused-function]
670 | static int ov5645_read_reg(struct ov5645 *ov5645, u16 reg, u8 *val)
| ^~~~~~~~~~~~~~~
drivers/media/i2c/ov5645.c:649:12: error: 'ov5645_write_reg' defined but not used [-Werror=unused-function]
649 | static int ov5645_write_reg(struct ov5645 *ov5645, u16 reg, u8 val)
| ^~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[4]: *** [scripts/Makefile.build:273：drivers/media/i2c/ov5645.o] 错误 1
make[3]: *** [scripts/Makefile.build:516：drivers/media/i2c] 错误 2
make[3]: *** 正在等待未完成的任务....
AR drivers/media/cec/i2c/built-in.a
CC drivers/input/touchscreen/ilitek/ilitek_report.o
CC drivers/gpu/arm/midgard/backend/gpu/mali_kbase_pm_ca_fixed.o
CC drivers/gpu/drm/drm_flip_work.o
CC drivers/net/usb/zaurus.o
CC drivers/net/Space.o
CC drivers/net/ethernet/stmicro/stmmac/stmmac_tc.o

CC [M] drivers/media/dvb-frontends/ascot2e.o
CC [M] drivers/media/dvb-frontends/helene.o
CC [M] drivers/media/dvb-frontends/zd1301_demod.o
CC [M] drivers/media/dvb-frontends/cxd2099.o
LD [M] drivers/media/dvb-frontends/stb0899.o
LD [M] drivers/media/dvb-frontends/drxd.o
LD [M] drivers/media/dvb-frontends/stv0900.o
LD [M] drivers/media/dvb-frontends/cxd2820r.o
LD [M] drivers/media/dvb-frontends/drxk.o
make[2]: *** [scripts/Makefile.build:516：drivers/media] 错误 2
make[1]: *** [Makefile:1929：drivers] 错误 2
make: *** [arch/arm64/Makefile:214: rk356x/pro-rk3566.img] Error 2
make: Leaving directory '/home/jinhualong/PRO-BOX-rk3568source20250911/kernel'
ERROR: Running /home/jinhualong/PRO-BOX-rk3568source20250911/device/rockchip/common/scripts/mk-kernel.sh - run_command failed!
ERROR: exit code 2 from line 36:
$@
ERROR: call stack:
build-helper: run_command(36)
mk-kernel.sh: do_build(61)
mk-kernel.sh: build_hook(259)
mk-kernel.sh: main(340)
ERROR: Running /home/jinhualong/PRO-BOX-rk3568source20250911/device/rockchip/common/build-hooks/99-all.sh - build_all failed!
ERROR: exit code 2 from line 20:
"$RK_SCRIPTS_DIR/mk-kernel.sh"
ERROR: call stack:
99-all.sh: build_all(20)
99-all.sh: build_hook(127)
build-helper: try_func(63)
build-helper: try_hook(95)
build-helper: source(175)
99-all.sh: main(138)
ERROR: Running /home/jinhualong/PRO-BOX-rk3568source20250911/device/rockchip/common/build-hooks/99-all.sh - try_func build_hook all failed!
ERROR: exit code 2 from line 67:
build_hook
ERROR: call stack:
build-helper: try_func(67)
build-helper: try_hook(95)
build-helper: source(175)
99-all.sh: main(138)
ERROR: Running ./build.sh - run_hooks build all failed!
ERROR: exit code 2 from line 256:
/home/jinhualong/PRO-BOX-rk3568source20250911/device/rockchip/common/build-hooks/99-all.sh build all
ERROR: call stack:
build.sh: run_hooks(256)
build.sh: run_build_hooks(275)
build.sh: main(649)
build.sh: main(660)
ERROR: Running ./build.sh - run_build_hooks build all failed!
ERROR: exit code 2 from line 278:
build
ERROR: call stack:
build.sh: run_build_hooks(278)
build.sh: main(649)
build.sh: main(660)
jinhualong@jinhualong-LEGION-REN7000K-26IRX:~/PRO-BOX-rk3568source20250911$

Y:\PRO-BOX-rk3568source20250911\kernel\Makefile

KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE
KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \
       -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \
       -Werror=implicit-function-declaration -Werror=implicit-int \
       -Werror=return-type -Wno-format-security \
       -std=gnu89
KBUILD_CPPFLAGS := -D__KERNEL__
KBUILD_AFLAGS_KERNEL :=
KBUILD_CFLAGS_KERNEL :=
KBUILD_AFLAGS_MODULE := -DMODULE
KBUILD_CFLAGS_MODULE := -DMODULE
KBUILD_LDFLAGS_MODULE :=
KBUILD_LDFLAGS :=
CLANG_FLAGS :=

修改为：

KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE
KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \
       -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \
       -Werror=implicit-function-declaration -Werror=implicit-int \
       -Werror=return-type -Wno-format-security \
       -std=gnu89 \
       -Wno-error \
       -w
KBUILD_CPPFLAGS := -D__KERNEL__
KBUILD_AFLAGS_KERNEL :=
KBUILD_CFLAGS_KERNEL :=
KBUILD_AFLAGS_MODULE := -DMODULE
KBUILD_CFLAGS_MODULE := -DMODULE
KBUILD_LDFLAGS_MODULE :=
KBUILD_LDFLAGS :=
CLANG_FLAGS :=