nios2-elf-gcc.exe: error: /mnt/c/1/synthesis/compilation/ed_fw/c3_function.c: No such file or directory - nios2-elf-gcc.exe: error: /mnt/c/1/synthesis/compilation/ed_fw/c3_function.c: No such file or directory Description Due to a problem in the O-RAN Intel® FPGA IP design example errors will occur when using the Intel® Quartus® Prime Edition Software version 20.3, 20.4, 21.1, and 21.2 on a Windows platform. [BSP build complete] Info: Compiling /mnt/c/1/synthesis/compilation/ed_fw/c3_function.c to obj/default//mnt/c/1/synthesis/compilation/ed_fw/c3_function.o nios2-elf-gcc.exe -xc -MP -MMD -c -Ic:/1/synthesis/ip_components/software/aaa/bsp/HAL/inc -Ic:/1/synthesis/ip_components/software/aaa/bsp -Ic:/1/synthesis/ip_components/software/aaa/bsp/drivers/inc -pipe -D__hal__ -DALT_NO_INSTRUCTION_EMULATION -DALT_SINGLE_THREADED -O0 -g -Wall -Wformat-security -mno-hw-div -mhw-mul -mno-hw-mulx -mgpopt=global -o obj/default//mnt/c/1/synthesis/compilation/ed_fw/c3_function.o /mnt/c/1/synthesis/compilation/ed_fw/c3_function.c nios2-elf-gcc.exe: error: /mnt/c/1/synthesis/compilation/ed_fw/c3_function.c: No such file or directory nios2-elf-gcc.exe: fatal error: no input files compilation terminated. Makefile:732: recipe for target 'obj/default//mnt/c/1/synthesis/compilation/ed_fw/c3_function.o' failed make: *** [obj/default//mnt/c/1/synthesis/compilation/ed_fw/c3_function.o] Error 1 make: Leaving directory '/mnt/c/1/synthesis/ip_components/software/aaa/app' Resolution To work around this problem, modify Makefile as below: Replace #------------------------------------------------------------------------------ # PATTERN RULES TO BUILD OBJECTS #------------------------------------------------------------------------------ define compile.c @$(ECHO) Info: Compiling $< to $@@ @$(MKDIR) $(@D) $(CC) -MP -MMD -c $(APP_CPPFLAGS) $(APP_CFLAGS) -o $@ $< $(CC_POST_PROCESS) endef with: #------------------------------------------------------------------------------ # PATTERN RULES TO BUILD OBJECTS #------------------------------------------------------------------------------ define compile.c @$(ECHO) Info: Compiling $< to $@@ @$(MKDIR) $(@D) $(CC) -MP -MMD -c $(APP_CPPFLAGS) $(APP_CFLAGS) -o "$(call adjust-path-mixed,$@)" "$(call adjust-path-mixed,$<)" $(CC_POST_PROCESS) endef This change will pass converted windows paths to the nios2-elf-gcc.exe command instead of wsl style paths. This problem is fixed starting with the Intel® Quartus® Prime Pro Edition Software version 21.4 and Intel® Quartus® Prime Standard Edition Software version 21.1. Custom Fields values: ['novalue'] Troubleshooting 1508819913 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 21.4 20.3 ['Arria® 10 FPGAs and SoCs', 'Stratix® 10 FPGAs and SoCs'] ['Nios® II Embedded Design Suite (EDS)'] ['novalue'] ['novalue']