Re: [gpsd-users] Garmin 18X LVC and upcoming week rollover

[Greg Troxel]

Rich Wales <address@hidden> writes:

> I'm trying to build gpsd from the Git code, and I'm having problems.
> (This is an Ubuntu 18.04 system.)
>
> See below for the output from when I run scons.
>
> I'm particularly perplexed, right off the bat, with the error claiming
> CC doesn't work -- I do have gcc 7.4.0 installed.

I have seen C compilation failures when /tmp is not writable, or other
such things.

However, it is marked "cached".  So get rid of all files that are not in
git, and in particular scons caches.

Failing that:


  actually compile, link and run a trivial foo.c that just includes
  stdio and does a printf, by hand

  find and read the scons debug/trace output, or figure out how to turn
  it on.  It seems that scons is trying to build something to test if cc
  works and failing and that output is probably illuminating.

> And in an earlier build attempt (before I installed a bunch of missing
> things), which actually made it further than this, I got errors while
> linking gpsd, complaining about numerous missing math functions.
>
> Suggestions, anyone?  Am I perhaps missing some prerequisite packages?

maybe, but until the c compiler issue is resolved, that doesn't matter much.

>
> ========================================================================
>
> scons: Reading SConscript files ...
> This system is: linux2
> Checking whether the C compiler works... (cached) no
> ERROR: CC doesn't work
> Checking if compiler accepts -pthread... (cached) no
> Checking whether the C++ compiler works... (cached) no
> C++ doesn't work, suppressing libgpsmm build.
> Checking for C header file curses.h... (cached) no
> Turning off ncurses support, curses.h not found.
> Checking pkg-config for libusb-1.0... (cached) no
> Checking for C library librt... (cached) no
> Checking for C library libm... (cached) no
> Checking for C library libthr... (cached) no
> Checking pkg-config for dbus-1... (cached) no
> Turning off dbus-export support, library not found.
> Checking pkg-config for bluez... (cached) no
> Turning off Bluetooth support, library not found.
> Checking for C type in_port_t... (cached) no
> Did not find in_port_t typedef, assuming unsigned short int
> Checking whether SUN_LEN is declared... (cached) no
> Checking whether SUN_LEN is declared... (cached) no
> SUN_LEN is not system-defined, using local definition
> Checking for C header file linux/can.h... (cached) no
> You do not have kernel CANbus available.
> Checking if compiler is C11... (cached) no
> Checking for C header file libkern/OSAtomic.h... (cached) no
> No memory barriers - SHM export and time hinting may not be reliable.
> Checking if compiler supplies __ORDER_BIG_ENDIAN__... (cached) no
> Checking for C header file endian.h... (cached) no
> Checking for C header file sys/endian.h... no
> Checking for C header file machine/endian.h... no
> You do not have the endian.h header file. RTCM V2 support disabled.
> Checking for C header file arpa/inet.h... no
> Checking for C header file netdb.h... no
> Checking for C header file netinet/in.h... no
> Checking for C header file netinet/ip.h... no
> Checking for C header file sys/sysmacros.h... no
> Checking for C header file sys/socket.h... no
> Checking for C header file sys/un.h... no
> Checking for C header file syslog.h... no
> Checking for C header file termios.h... no
> Checking for C header file winsock2.h... no
> Checking for C function cfmakeraw()... no
> Checking for C function clock_gettime()... no
> Checking for C function daemon()... no
> Checking for C function fcntl()... no
> Checking for C function fork()... no
> Checking for C function gmtime_r()... no
> Checking for C function inet_ntop()... no
> Checking for C function strlcat()... no
> Checking for C function strlcpy()... no
> Checking for C function strptime()... no
> Checking for C function sincos()... no
> Checking for C function __sincos()... no
> Checking for C header file sys/timepps.h... no
> Forcing magic_hat=no since RFC2783 API is unavailable
> Checking if sys/ioctl.h supplies TIOCMIWAIT... (cached) no
> Neither TIOCMIWAIT nor RFC2783 API is available)
> Checking that xsltproc can make man pages... (cached) no
> Checking pkg-config for QtNetwork... (cached) no
> Turning off Qt support, library not found.
> Checking if compiler accepts -Wall... (cached) no
> Checking if compiler accepts -Wcast-align... (cached) no
> Checking if compiler accepts -Wextra... (cached) no
> Checking if compiler accepts -Wimplicit-fallthrough... (cached) no
> Checking if compiler accepts -Wmissing-declarations... (cached) no
> Checking if compiler accepts -Wmissing-prototypes... (cached) no
> Checking if compiler accepts -Wno-missing-field-initializers... (cached) no
> Checking if compiler accepts -Wno-uninitialized... (cached) no
> Checking if compiler accepts -Wpointer-arith... (cached) no
> Checking if compiler accepts -Wreturn-type... (cached) no
> Checking if compiler accepts -Wstrict-prototypes... (cached) no
> Checking if compiler accepts -Wvla... (cached) no
> Checking whether python program exists.../usr/bin/python
> Obtaining Python exe path... /usr/bin/python
> Obtaining Python lib dir... /usr/lib/python2.7/dist-packages
> Obtaining Python config vars... ok
> {'OPT': '-DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes',
> 'BASECFLAGS': '-fno-strict-aliasing', 'CC': 'x86_64-linux-gnu-gcc
> -pthread', 'CXX': 'x86_64-linux-gnu-g++ -pthread', 'SO': '.so',
> 'LDFLAGS': '-Wl,-Bsymbolic-functions -Wl,-z,relro', 'LDSHARED':
> 'x86_64-linux-gnu-gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions
> -Wl,-Bsymbolic-functions -Wl,-z,relro -fno-strict-aliasing -DNDEBUG -g
> -fwrapv -O2 -Wall -Wstrict-prototypes -Wdate-time -D_FORTIFY_SOURCE=2 -g
> -fdebug-prefix-map=/build/python2.7-PPrPZj/python2.7-2.7.15=.
> -fstack-protector-strong -Wformat -Werror=format-security  ',
> 'CCSHARED': '-fPIC', 'INCLUDEPY': '/usr/include/python2.7'}
> Altered configuration variables:
> nmea2000 = False (default True): NMEA2000/CAN support
> rtcm104v2 = False (default True): rtcm104v2 support
> dbus_export = False (default True): enable DBUS export support
> bluez = False (default True): BlueZ support for Bluetooth devices
> libgpsmm = False (default True): build C++ bindings
> ncurses = False (default True): build with ncurses
> qt = False (default True): build Qt bindings
> magic_hat = False (default True): special Linux PPS hack for Raspberry
> Pi et al
> WARNING: not building cgps or gpsmon
> WARNING: Python too old: gps/aiogps.py will not be installed
>
> RTCM2 regression tests suppressed because rtcm104v2 is off.
> Part of the website build requires asciidoc, not installed.
> scons: done reading SConscript files.
> scons: Building targets ...
> Creating 'gpsd_config.h'
> gcc -o ais_json.os -c -O2 -fPIC ais_json.c
> gcc -o bits.os -c -O2 -fPIC bits.c
> gcc -o gpsdclient.os -c -O2 -fPIC gpsdclient.c
> rm -f gps_maskdump.c && /usr/bin/python maskaudit.py -c
> /secure/home/richw/src/gpsd > gps_maskdump.c && chmod a-w gps_maskdump.c
> gcc -o gps_maskdump.os -c -O2 -fPIC gps_maskdump.c
> In file included from gps_maskdump.c:13:0:
> gpsd.h:297:5: error: unknown type name 'speed_t'
>      speed_t fixed_port_speed;           // Fixed port speed, if non-zero
>      ^~~~~~~
> gpsd.h:1062:23: warning: 'struct termios' declared inside parameter list
> will not be visible outside of this definition or declaration
>  void cfmakeraw(struct termios *);
>                        ^~~~~~~
> scons: *** [gps_maskdump.os] Error 1
> scons: building terminated because of errors.
>
> ========================================================================