ESP32 Forum

Hello, all. When I'm trying to Make a project I get many errors which look like the following:

xtensa-esp32-elf-gcc.exe: error: /cygdrive/c/espIDF/components/lwip/port/netif/wlanif.c: No such file or directory
xtensa-esp32-elf-gcc.exe: fatal error: no input files
compilation terminated.
make[1]: *** [/cygdrive/c/espIDF/make/component_wrapper.mk:211: port/netif/wlanif.o] Error 1

This is untrue as The path to component_Wrapper is "C:\espIDF\make", which is the windows 10 equivalent of that cygwin style address..

What could be going wrong in this?

ESP-IDF build system is not compatible with Cygwin, please have a look at this post:
https://esp32.com/viewtopic.php?f=2&t=2 ... win#p10320

You see, I try to use make with cross GCC, but when I do that it gives me the error:

C:\espIDF/make/project.mk:46: "esp-idf build system only supports GNU Make versions 3.81 or newer. You may see unexpected results with other Makes."
C:\espIDF/make/project.mk:77: *** IDF_PATH cannot contain colons. If overriding IDF_PATH on Windows, use Cygwin-style /c/dir instead of C:/dir. Stop.

Okay. I change my IDF_PATH from "C:\espIDF" to "/c/espIDF". I now get the error:

Makefile:8: /c/espIDF/make/project.mk: No such file or directory
make: *** No rule to make target '/c/espIDF/make/project.mk'. Stop.

now I know for a fact that this exists, in cygwin notation. However, when CygWin refers to a drive, you prepend the address with /cygdrive/. So C:\ in cygwin is actually /cygdrive/c/. Thus I change my IDF_PATH once again, to "/cygdrive/c/espIDF". This once again gives me the error:

Makefile:8: /cygdrive/c/espIDF/make/project.mk: No such file or directory
make: *** No rule to make target '/cygdrive/c/espIDF/make/project.mk'. Stop.

Making me think that cygwin itself would probably work best with such addresses. Maybe I'll use cygwin's GCC instead... But then I get the first error.

Hi tuskiomi,

As per the link ESP_Igrr posted, the mismatch here is that you're using a Cygwin "make" but the toolchains (xtensa-esp32-elf-*) are MINGW32-based. There's no way around this without recompiling the cross-toolchains to be Cygwin-based instead of MINGW32-based. Because otherwise you have:

Cygwin IDF_PATH + Cygwin make + MINGW32 toolchain = Cygwin make generates Cygwin /cygpath paths that the toolchain doesn't recognize.

C:/xyz IDF_PATH + Cygwin make + MINGW32 toolchain = ESP-IDF makefile converts C:/xyz to /c/xyz and then Cygwin make doesn't recognise that path. Even if you take out that early conversion, at some later point Cygwin make would canonicalize that path to a Cygwin path and the toolchain would fail to recognize it.

I spent a significant amount of time last year trying to come up with a make system that supported both Cygwin & MINGW32 "make" with a MINGW32 toolchain, and couldn't find any easy way (at least without shipping two toolchains). We chose to support a MINGW32-based cross-toolchain mostly for performance reasons.

Is there a reason you need to use a Cygwin-based make instead of a MINGW32-based make? What environment are you running in?

Hi, ESP Angus.

My first intuition was to use cygwin make when the makefile spit out an error saying to use cygwin style file paths for IDF_PATH. There is no restriction. I am using Windows 10 with eclipse oxygen for an IDE.

tuskiomi wrote: My first intuition was to use cygwin make when the makefile spit out an error saying to use cygwin style file paths for IDF_PATH. There is no restriction. I am using Windows 10 with eclipse oxygen for an IDE.

Sorry, that's my mistake when writing that warning message I used the wrong terminology. If you can launch mingw32 make (ideally you can use the MSYS2 environment we ship) then it should all work.

(The lack of traditional C:\blah paths is because make also uses colons as a delimiter so it's hard to reconcile the two.)

Hi guys, I got this

eclipse_make.sh has been replaced with eclipse_make.py. Check the Windows Eclipse docs for the new command.
This shell script will continue to work until the next major release.
C:\msys32\home\user\esp\esp-idf/make/project.mk:101: *** IDF_PATH cannot contain colons. If overriding IDF_PATH on Windows, use MSYS Unix-style /c/dir instead of C:/dir. Stop.
Running make in 'C:/msys32/home/user/esp/esp-idf-template'


how do you fix this?, I installed Msys32....