Configuring OCaml version 4.06.0
Configuring for host x86_64-unknown-linux-gnu ...
Configuring for target x86_64-unknown-linux-gnu ...
Using compiler gcc.
Compiler family and version: gcc-8-3.
The C compiler is ISO C99 compliant.
Checking the sizes of integers and pointers...
Wow! A 64 bit architecture!
This is a little-endian architecture.
Doubles can be word-aligned.
64-bit integers can be word-aligned.
Adding -fno-tree-vrp option to work around PR#7452
ranlib found
#! appears to work in shell scripts.
POSIX signal handling found.
expm1(), log1p(), hypot(), copysign() found.
getrusage() found.
times() found.
secure_getenv() found.
termcap functions found (with libraries '-lcurses')
You have BSD sockets.
socklen_t is defined in <sys/socket.h>
inet_aton() found.
IPv6 is supported.
stdint.h found.
unistd.h found.
off_t is defined in <sys/types.h>
dirent.h found.
rewinddir() found.
lockf() found.
mkfifo() found.
getcwd() found.
getpriority() found.
utime() found.
utimes() found.
dup2() found.
fchmod() found.
truncate() found.
sys/select.h found.
select() found.
nanosleep() found.
symlink() found.
waitpid() found.
wait4() found.
getgroups() found.
setgroups() found.
initgroups() found.
POSIX termios found.
Asynchronous I/O are supported.
setitimer() found.
gethostname() found.
uname() found.
gettimeofday() found.
mktime() found.
setsid() found.
putenv() found.
setlocale() and <locale.h> found.
dlopen() found in -ldl.
Dynamic loading of shared libraries is supported.
mmap() found.
pwrite() found
stat() supports nanosecond precision.
gethostbyname_r() found (with 6 arguments).
gethostbyaddr_r() found (with 8 arguments).
mkstemp() found
nice() found
dup3() found
pipe2() found
accept4() found
getauxval() found.
sys/shm.h found.
execvpe() found.
Replay debugger supported.
System stack overflow can be detected.
POSIX threads library supported.
Options for linking with POSIX threads: -lpthread
sigwait() found
Bytecode threads library supported.
[WARNING] Cannot compile X11 program.
[WARNING] X11 not found, the "graph" library will not be supported.
[WARNING] BFD library not found, 'objinfo' will be unable to display info  on .cmxs files.
Assembler supports CFI
mmap supports huge pages

** Configuration summary **

Directories where OCaml will be installed:
        binaries.................. /usr/local/bin
        standard library.......... /usr/local/lib/ocaml
        manual pages.............. /usr/local/man (with extension .1)
Configuration for the bytecode compiler:
        C compiler used........... gcc
        options for compiling..... -O2 -fno-strict-aliasing -fwrapv
        options for linking.......  -Wl,-E  -lm  -ldl -lcurses -lpthread
        shared libraries are supported
        options for compiling..... -fPIC -O2 -fno-strict-aliasing -fwrapv
        command for building...... gcc -shared -o lib.so -Wl,-rpath,/a/path objs
Configuration for the native-code compiler:
        hardware architecture..... amd64
        OS variant................ linux
        C compiler used........... gcc
        options for compiling..... -O2 -fno-strict-aliasing -fwrapv
        options for linking.......  -lm
        assembler ................ as
        preprocessed assembler ... gcc -c
        assembler supports CFI ... yes
        with frame pointers....... no
        naked pointers forbidden.. no
        spacetime profiling....... no
        reserved bits in header... no
        C plugins................. no
        compile with -fPIC........ no
        native dynlink ........... true
        profiling with gprof ..... supported
        using flambda middle-end . no
        force safe strings ............. no
        (-safe-string is the default per-file option)
        flat float arrays ........ yes
        afl-fuzz always enabled .. no
Source-level replay debugger: supported
Additional libraries supported:
        unix str dynlink bigarray raw_spacetime_lib systhreads threads
The "graph" library: not supported

** OCaml configuration completed successfully **