Re: ESP32

[Greg Stewart <gregstewart90@xxxxxxxxx>]

Thanks for the quick response. I can run CMake from my mac, but I don't
think that is what you mean. The ESP32 does have and OpenSSL
implementation. Right now I'm just telling the compiler to compile all of
the c files in the src directory. What should be my approach?

Ultimately I want to use scp to update a config file on a remote and then
send two commands to that remote server to reboot.

Thanks,
Greg

On Wed, Mar 29, 2017 at 11:48 AM, Aris Adamantiadis <aris@xxxxxxxxxxxx>
wrote:

> Hi Greg,
>
> This is not an easy task. Compilers for embedded architectures have
> strong limitations, and the OS (are you using RTOS?) is quite limited
> and not strict POSIX. A majority of errors you pasted can be linked to
> the lack of OpenSSL headers in your include path. Did you manage to run
> CMake on the source tree? If not, you will have to manually write the
> config.h file.
> Some parts of libssh may be stripped out, like the agent, but some parts
> cannot be removed.
>
> Aris
>
> On 29/03/17 19:19, Greg Stewart wrote:
> > Hello. I am trying to get libssh to work on an ESP32. This is a new
> > ble+wifi modules with MCU from Espressif. It is gaining popularity,
> > and I would love to use libssh from the esp32. When I begin, I get
> > this error:
> >
> >     libssh/include/libssh/libssh.h:67:44: fatal error: sys/select.h
> >
> > If I comment out that line, the header files are fine. I then try to
> > compile all of the c files and I get lots of errors. They are found at
> > the end of the email.
> >
> > Is there something I need to do to make this work? I've worked with
> > Espressif too, and they said they have done all they can to help.
> >
> > Thanks,
> > Greg
> >
> >
> >
> >
> > In file included from
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/src/agent.c:53:0:
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/priv.h:42:4:
> > error: #error "no strtoull function found"
> >
> >  #  error "no strtoull function found"
> >
> >     ^
> >
> > In file included from
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/src/agent.c:53:0:
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/priv.h:165:4:
> > error: #error "Your system must provide a __func__ macro"
> >
> >  #  error "Your system must provide a __func__ macro"
> >
> >     ^
> >
> > In file included from
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/packet.h:24:0,
> >
> >                  from
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/session.h:25,
> >
> >                  from
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/src/agent.c:56:
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:55:1:
> > error: unknown type name 'MD5CTX'
> >
> >  MD5CTX md5_init(void);
> >
> >  ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:56:17:
> > error: unknown type name 'MD5CTX'
> >
> >  void md5_update(MD5CTX c, const void *data, unsigned long len);
> >
> >                  ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:57:34:
> > error: unknown type name 'MD5CTX'
> >
> >  void md5_final(unsigned char *md,MD5CTX c);
> >
> >                                   ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:59:1:
> > error: unknown type name 'SHACTX'
> >
> >  SHACTX sha1_init(void);
> >
> >  ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:60:18:
> > error: unknown type name 'SHACTX'
> >
> >  void sha1_update(SHACTX c, const void *data, unsigned long len);
> >
> >                   ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:61:35:
> > error: unknown type name 'SHACTX'
> >
> >  void sha1_final(unsigned char *md,SHACTX c);
> >
> >                                    ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:64:1:
> > error: unknown type name 'SHA256CTX'
> >
> >  SHA256CTX sha256_init(void);
> >
> >  ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:65:20:
> > error: unknown type name 'SHA256CTX'
> >
> >  void sha256_update(SHA256CTX c, const void *data, unsigned long len);
> >
> >                     ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:66:37:
> > error: unknown type name 'SHA256CTX'
> >
> >  void sha256_final(unsigned char *md,SHA256CTX c);
> >
> >                                      ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:69:1:
> > error: unknown type name 'SHA384CTX'
> >
> >  SHA384CTX sha384_init(void);
> >
> >  ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:70:20:
> > error: unknown type name 'SHA384CTX'
> >
> >  void sha384_update(SHA384CTX c, const void *data, unsigned long len);
> >
> >                     ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:71:37:
> > error: unknown type name 'SHA384CTX'
> >
> >  void sha384_final(unsigned char *md,SHA384CTX c);
> >
> >                                      ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:74:1:
> > error: unknown type name 'SHA512CTX'
> >
> >  SHA512CTX sha512_init(void);
> >
> >  ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:75:20:
> > error: unknown type name 'SHA512CTX'
> >
> >  void sha512_update(SHA512CTX c, const void *data, unsigned long len);
> >
> >                     ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:76:37:
> > error: unknown type name 'SHA512CTX'
> >
> >  void sha512_final(unsigned char *md,SHA512CTX c);
> >
> >                                      ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:80:1:
> > error: unknown type name 'EVPCTX'
> >
> >  EVPCTX evp_init(int nid);
> >
> >  ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:81:17:
> > error: unknown type name 'EVPCTX'
> >
> >  void evp_update(EVPCTX ctx, const void *data, unsigned long len);
> >
> >                  ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:82:16:
> > error: unknown type name 'EVPCTX'
> >
> >  void evp_final(EVPCTX ctx, unsigned char *md, unsigned int *mdlen);
> >
> >                 ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:88:1:
> > error: unknown type name 'HMACCTX'
> >
> >  HMACCTX hmac_init(const void *key,int len, enum ssh_hmac_e type);
> >
> >  ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:89:18:
> > error: unknown type name 'HMACCTX'
> >
> >  void hmac_update(HMACCTX c, const void *data, unsigned long len);
> >
> >                   ^
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/wrapper.h:90:17:
> > error: unknown type name 'HMACCTX'
> >
> >  void hmac_final(HMACCTX ctx,unsigned char *hashmacbuf,unsigned int
> *len);
> >
> >                  ^
> >
> > In file included from
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/pki.h:32:0,
> >
> >                  from
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/src/agent.c:58:
> >
> > /Users/Greg/Documents/StewartTech/esp32/workspace/
> cp25g1/components/libssh/include/libssh/crypto.h:77:5:
> > error: unknown type name 'bignum'
> >
> >      bignum e,f,x,k,y;
> >
> >      ^
> >
> > make[1]: *** [src/agent.o] Error 1
> >
> >     make: *** [libssh-build] Error 2
> >
>
>
>
>