CH32V307 使用以太网库libwchnet.a不能开启FPU吗 ？
riscv-none-embed-gcc -march=rv32imafc -mabi=ilp32f -msmall-data-limit=8 -mno-save-restore -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -Wunused -Wuninitialized  -g -T "D:\work\V307VC\EXAM\ETH\UdpServer\Ld\Link.ld" -nostartfiles -Xlinker --gc-sections -L"D:\work\V307VC\EXAM\ETH\NetLib" -Wl,-Map,"UdpServer.map" --specs=nano.specs --specs=nosys.specs -o "UdpServer.elf"  ./User/cJSON.o ./User/ch32v30x_it.o ./User/main.o ./User/system_ch32v30x.o  ./Startup/startup_ch32v30x_D8C.o  ./Peripheral/src/ch32v30x_adc.o ./Peripheral/src/ch32v30x_bkp.o ./Peripheral/src/ch32v30x_can.o ./Peripheral/src/ch32v30x_crc.o ./Peripheral/src/ch32v30x_dac.o ./Peripheral/src/ch32v30x_dbgmcu.o ./Peripheral/src/ch32v30x_dma.o ./Peripheral/src/ch32v30x_dvp.o ./Peripheral/src/ch32v30x_eth.o ./Peripheral/src/ch32v30x_exti.o ./Peripheral/src/ch32v30x_flash.o ./Peripheral/src/ch32v30x_fsmc.o ./Peripheral/src/ch32v30x_gpio.o ./Peripheral/src/ch32v30x_i2c.o ./Peripheral/src/ch32v30x_iwdg.o ./Peripheral/src/ch32v30x_misc.o ./Peripheral/src/ch32v30x_opa.o ./Peripheral/src/ch32v30x_pwr.o ./Peripheral/src/ch32v30x_rcc.o ./Peripheral/src/ch32v30x_rng.o ./Peripheral/src/ch32v30x_rtc.o ./Peripheral/src/ch32v30x_sdio.o ./Peripheral/src/ch32v30x_spi.o ./Peripheral/src/ch32v30x_tim.o ./Peripheral/src/ch32v30x_usart.o ./Peripheral/src/ch32v30x_wwdg.o  ./NetLib/eth_driver.o  ./Debug/board.o ./Debug/debug.o  ./Core/core_riscv.o   -lwchnet -lprintf
d:/mounriver/mounriver_studio/toolchain/risc-v embedded gcc/bin/../lib/gcc/riscv-none-embed/8.2.0/../../../../riscv-none-embed/bin/ld.exe: D:\work\V307VC\EXAM\ETH\NetLib\libwchnet.a(eth_api.o): can't link soft-float modules with single-float modules
d:/mounriver/mounriver_studio/toolchain/risc-v embedded gcc/bin/../lib/gcc/riscv-none-embed/8.2.0/../../../../riscv-none-embed/bin/ld.exe: failed to merge target specific data of file D:\work\V307VC\EXAM\ETH\NetLib\libwchnet.a(eth_api.o)
d:/mounriver/mounriver_studio/toolchain/risc-v embedded gcc/bin/../lib/gcc/riscv-none-embed/8.2.0/../../../../riscv-none-embed/bin/ld.exe: D:\work\V307VC\EXAM\ETH\NetLib\libwchnet.a(ipcheck.o): can't link soft-float modules with single-float modules
d:/mounriver/mounriver_studio/toolchain/risc-v embedded gcc/bin/../lib/gcc/riscv-none-embed/8.2.0/../../../../riscv-none-embed/bin/ld.exe: failed to merge target specific data of file D:\work\V307VC\EXAM\ETH\NetLib\libwchnet.a(ipcheck.o)
d:/mounriver/mounriver_studio/toolchain/risc-v embedded gcc/bin/../lib/gcc/riscv-none-embed/8.2.0/../../../../riscv-none-embed/bin/ld.exe: D:\work\V307VC\EXAM\ETH\NetLib\libwchnet.a(net_dhcp.o): can't link soft-float modules with single-float modules
d:/mounriver/mounriver_studio/toolchain/risc-v embedded gcc/bin/../lib/gcc/riscv-none-embed/8.2.0/../../../../riscv-none-embed/bin/ld.exe: failed to merge target specific data of file D:\work\V307VC\EXAM\ETH\NetLib\libwchnet.a(net_dhcp.o)
d:/mounriver/mounriver_studio/toolchain/risc-v embedded gcc/bin/../lib/gcc/riscv-none-embed/8.2.0/../../../../riscv-none-embed/bin/ld.exe: D:\work\V307VC\EXAM\ETH\NetLib\libwchnet.a(net_dns.o): can't link soft-float modules with single-float modules
d:/mounriver/mounriver_studio/toolchain/risc-v embedded gcc/bin/../lib/gcc/riscv-none-embed/8.2.0/../../../../riscv-none-embed/bin/ld.exe: failed to merge target specific data of file D:\work\V307VC\EXAM\ETH\NetLib\libwchnet.a(net_dns.o)
d:/mounriver/mounriver_studio/toolchain/risc-v embedded gcc/bin/../lib/gcc/riscv-none-embed/8.2.0/../../../../riscv-none-embed/bin/ld.exe: D:\work\V307VC\EXAM\ETH\NetLib\libwchnet.a(socket.o): can't link soft-float modules with single-float modules

我已经重新编译整个工程了

还有使用cjson  提示没有这个函数pow

已经include math.h 了

pow 搞定了

感谢21ic论坛版主 这是开了fpu的lib

lib.zip