Can't compile http-server with mingw64 for the armv3l

[KGB1st]

Compile successfully:
arm-none-eabi-gcc -D MG_ARCH=MG_ARCH_NEWLIB -c main.c mongoose.c

$ file main.o mongoose.o
main.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped
mongoose.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped

And then got errors while trying to call:
arm-none-eabi-ld -o main mongoose.o main.o

C:\msys64\mingw64\bin\arm-none-eabi-ld.exe: warning: cannot find entry symbol _start; defaulting to 00008000
...
C:\msys64\mingw64\bin\arm-none-eabi-ld.exe: mongoose.o: in function `mg_dns_free':
mongoose.c:(.text+0x938): undefined reference to `free'
C:\msys64\mingw64\bin\arm-none-eabi-ld.exe: mongoose.o: in function `mg_dns_parse_name_depth':
mongoose.c:(.text+0xbd4): undefined reference to `memcpy'
C:\msys64\mingw64\bin\arm-none-eabi-ld.exe: mongoose.o: in function `mg_dns_parse_rr':
mongoose.c:(.text+0xd18): undefined reference to `memset'
C:\msys64\mingw64\bin\arm-none-eabi-ld.exe: mongoose.o: in function `mg_dns_parse':
mongoose.c:(.text+0xf74): undefined reference to `memset'
C:\msys64\mingw64\bin\arm-none-eabi-ld.exe: mongoose.c:(.text+0x116c): undefined reference to `memcpy'
...
C:\msys64\mingw64\bin\arm-none-eabi-ld.exe: mongoose.o: in function `mg_dtoa':
mongoose.c:(.text+0x2024): undefined reference to `__aeabi_dcmpeq'
C:\msys64\mingw64\bin\arm-none-eabi-ld.exe: mongoose.c:(.text+0x2078): undefined reference to `__aeabi_dcmpgt'
...
C:\msys64\mingw64\bin\arm-none-eabi-ld.exe: mongoose.c:(.text+0x220c): undefined reference to `__aeabi_dcmple'
...

$ pacman -Q
..
mingw-w64-x86_64-arm-none-eabi-binutils 2.41-2
mingw-w64-x86_64-arm-none-eabi-gcc 12.2.0-1
mingw-w64-x86_64-arm-none-eabi-newlib 4.4.0.20231231-1
mingw-w64-x86_64-gcc-libs 14.1.0-2
....

[scaprile]

There are tons of examples for arm with gcc. You are missing basic stdlib functions, you are not providing a proper standard library like newlib or equivalent to the linker, something the likes of --specs . Please learn your tools, know your system, learn how to build code for your system. We are not currently building for that architecture and compiler and Windows.

That example (all of them, btw) has a Makefile for a reason. Once you solve your current problem, you'll be missing Windows networking functions

mongoose/tutorials/http/http-server/Makefile

Line 14 in 3ae1a0f

CFLAGS += -lws2_32 # Link against Winsock library

You'll quite likely need to indicate the cpu, like

mongoose/test/Makefile

Lines 137 to 139 in 3ae1a0f

	arm: DEFS += -DMG_ENABLE_POSIX_FS=0 -DMG_ENABLE_TCPIP=1 -DMG_ENABLE_TCPIP_DRIVER_INIT=0 -DMG_ARCH=MG_ARCH_NEWLIB
	arm: mongoose.h $(SRCS)
	$(DOCKER) mdashnet/armgcc arm-none-eabi-gcc -mcpu=cortex-m3 -mthumb $(SRCS) $(OPTS) $(WARN) $(INCS) $(DEFS) $(TFLAGS) -o unit_test -nostartfiles --specs nosys.specs -e 0