build on esp32 about vedis

[symisc]

While compiler warning about unused variables are harmless, the last one about vedisExportBuiltinVfs() does mean that no suitable VFS layer were found for the architecture you are targeting; In which case, Vedis cannot save anything to disk, nor create files, only in-memory operations are allowed. If the architecture you are targeting is a POSIX-Like, then define UNIXES as a global compile directive to build the library with the UNIX VFS.

[Yardie-]

Ok well what I am writting to is a simple SPI Flash FAT file system on an Espresif System on a chip ESP32-PICO in Espressif's on build system. Not really unix not really an OS at all.
https://www.espressif.com/en/products/socs/esp32
If I compile the library as is I get
../main/vedis.c:3076:73: error: parameter 'pUserData' set but not used [-Werror=unused-but-set-parameter]
static sxi32 vedisTokenizeInput(SyStream *pStream,SyToken *pToken,void *pUserData,void *pCtxData)
~~~~~~^~~~~~~~~
../main/vedis.c:3076:89: error: parameter 'pCtxData' set but not used [-Werror=unused-but-set-parameter]
static sxi32 vedisTokenizeInput(SyStream *pStream,SyToken *pToken,void *pUserData,void *pCtxData)
~~~~~~^~~~~~~~
In file included from ../main/vedis.c:7298:
/home/g/esp/esp-idf/components/newlib/platform_include/sys/uio.h: At top level:
/home/g/esp/esp-idf/components/newlib/platform_include/sys/uio.h:17:32: warning: 'struct iovec' declared inside parameter list will not be visible outside of this definition or declaration
int writev(int s, const struct iovec *iov, int iovcnt);
^~~~~
/home/g/esp/esp-idf/components/newlib/platform_include/sys/uio.h:19:36: warning: 'struct iovec' declared inside parameter list will not be visible outside of this definition or declaration
ssize_t readv(int fd, const struct iovec *iov, int iovcnt);
^~~~~
../main/vedis.c:7300:10: fatal error: sys/mman.h: No such file or directory
#include <sys/mman.h>
^~~~~~~~~~~~
cc1: some warnings being treated as errors
compilation terminated.
I am fairly new to this environment but people have had sqlite running on it and also the nodemcu system uses Redis going on the same chip.

I will eventually find the right way to implement the mmap functions It must be in there somewhere but my personal requirements can be satisfied with a simple csv. So maybe personally I will just stick with that for now.
I think there is a good place for a small lightweight database for these SOC chips though they are growing in size and popularity.
I am just not the man for that job.
Thanks heaps for your reply.

:) Greg