[OHOS ERROR] riscv32-unknown-elf-ld: ohos\libs\libwifi_test_demo.a(libwifi_test_demo.wifi_test_demo.o): in function .L2':[OHOS ERROR] wifi_test_demo.c:(.text.Task1+0xa2): undefined reference tostdin'
[OHOS ERROR] riscv32-unknown-elf-ld: wifi_test_demo.c:(.text.Task1+0xa6): undefined reference to stdin' [OHOS ERROR] riscv32-unknown-elf-ld: ohos\libs\libwifi_test_demo.a(libwifi_test_demo.wifi_test_demo.o): in function.L3':[OHOS ERROR] wifi_test_demo.c:(.text.Task1+0xd2): undefined reference to `fgets'
[OHOS ERROR] scons: *** [output\bin\Hi3861_wifiiot_app.out] Error 1
[OHOS ERROR] BUILD FAILED!!!!
[OHOS ERROR] Failed building output\bin\Hi3861_wifiiot_app.out: Error 1
[OHOS ERROR] you can check build log in D:\hi3861_hdu_iot_application\src\out\hispark_pegasus\wifiiot_hispark_pegasus\build.log
[OHOS ERROR] command: "D:\HarMonyOS\DevTools_Hi3861V100_v1.0\thirdparty\python38\scripts\ninja.exe -w dupbuild=warn -C D:\hi3861_hdu_iot_application\src\out\hispark_pegasus\wifiiot_hispark_pegasus" failed
[OHOS ERROR] return code: 1
[OHOS ERROR] execution path: D:\hi3861_hdu_iot_application\src
scons: *** [src\out\hispark_pegasus\wifiiot_hispark_pegasus\target.elf] Failed to build!
检查代码和库文件，确保它们与目标平台兼容，并且没有缺失任何必需的库文件或头文件。
检查的编译器和构建工具的设置，确保它们与目标平台兼容，并正确配置。
检查你的代码，确保所有引用和函数调用都是正确的，并且没有错误。