=-=-= Installing core.109.42.00 =-=-=
The archive for core.109.42.00 is in the local cache.
Extracting /home/cesally/.opam/archives/core.109.42.00+opam.tar.gz.
Building core.109.42.00:
  make
  make install
ocamlopt.opt -o setup.exe setup.ml || ocamlopt -o setup.exe setup.ml || ocamlc -o setup.exe setup.ml
rm -f setup.cmx setup.cmi setup.o setup.obj setup.cmo
./setup.exe -configure
/tmp/ccdK70a8.o: In function `main':
test_recvmmsg.c:(.text+0x24): warning: recvmmsg is not implemented and will always fail

Configuration:
ocamlfind: ........................................... /home/cesally/.opam/4.01.0/bin/ocamlfind
ocamlc: .............................................. /home/cesally/.opam/4.01.0/bin/ocamlc.opt
ocamlopt: ............................................ /home/cesally/.opam/4.01.0/bin/ocamlopt.opt
ocamlbuild: .......................................... /home/cesally/.opam/4.01.0/bin/ocamlbuild
Package name: ........................................ core
Package version: ..................................... 109.42.00
os_type: ............................................. Unix
system: .............................................. linux
architecture: ........................................ amd64
ccomp_type: .......................................... cc
ocaml_version: ....................................... 4.01.0
standard_library_default: ............................ /home/cesally/.opam/4.01.0/lib/ocaml
standard_library: .................................... /home/cesally/.opam/4.01.0/lib/ocaml
standard_runtime: .................................... /home/cesally/.opam/4.01.0/bin/ocamlrun
bytecomp_c_compiler: ................................. gcc -fno-defer-pop -Wall -D_FILE_OFFSET_BITS=64 -D_REENTRANT -fPIC
native_c_compiler: ................................... gcc -Wall -D_FILE_OFFSET_BITS=64 -D_REENTRANT
model: ............................................... default
ext_obj: ............................................. .o
ext_asm: ............................................. .s
ext_lib: ............................................. .a
ext_dll: ............................................. .so
default_executable_name: ............................. a.out
systhread_supported: ................................. true
Install architecture-independent files dir: .......... /usr/local
Install architecture-dependent files in dir: ......... $prefix
User executables: .................................... $exec_prefix/bin
System admin executables: ............................ $exec_prefix/sbin
Program executables: ................................. $exec_prefix/libexec
Read-only single-machine data: ....................... $prefix/etc
Modifiable architecture-independent data: ............ $prefix/com
Modifiable single-machine data: ...................... $prefix/var
Object code libraries: ............................... $exec_prefix/lib
Read-only arch-independent data root: ................ $prefix/share
Read-only architecture-independent data: ............. $datarootdir
Info documentation: .................................. $datarootdir/info
Locale-dependent data: ............................... $datarootdir/locale
Man documentation: ................................... $datarootdir/man
Documentation root: .................................. $datarootdir/doc/$pkg_name
HTML documentation: .................................. $docdir
DVI documentation: ................................... $docdir
PDF documentation: ................................... $docdir
PS documentation: .................................... $docdir
findlib_version: ..................................... 1.4
is_native: ........................................... true
suffix_program: ......................................
Remove a file.: ...................................... rm -f
Remove a directory.: ................................. rm -rf
Turn ocaml debug flag on: ............................ true
Turn ocaml profile flag on: .......................... false
Compiler support generation of .cmxs.: ............... true
OCamlbuild additional flags: .........................
Enable linux specific extensions: .................... true
Enable POSIX timers: ................................. true
Linux RT Library: .................................... true
Create documentations: ............................... true
Compile tests executable and library and run them: ... false
camlp4o: ............................................. /home/cesally/.opam/4.01.0/bin/camlp4o
pkg_bigarray: ........................................ /home/cesally/.opam/4.01.0/lib/ocaml
pkg_bin_prot: ........................................ /home/cesally/.opam/4.01.0/lib/bin_prot
pkg_bin_prot_syntax: ................................. /home/cesally/.opam/4.01.0/lib/bin_prot
pkg_comparelib_syntax: ............................... /home/cesally/.opam/4.01.0/lib/comparelib
pkg_core_kernel: ..................................... /home/cesally/.opam/4.01.0/lib/core_kernel
pkg_fieldslib: ....................................... /home/cesally/.opam/4.01.0/lib/fieldslib
pkg_fieldslib_syntax: ................................ /home/cesally/.opam/4.01.0/lib/fieldslib
pkg_herelib: ......................................... /home/cesally/.opam/4.01.0/lib/herelib
pkg_herelib_syntax: .................................. /home/cesally/.opam/4.01.0/lib/herelib
pkg_pa_ounit: ........................................ /home/cesally/.opam/4.01.0/lib/pa_ounit
pkg_pa_ounit_syntax: ................................. /home/cesally/.opam/4.01.0/lib/pa_ounit
pkg_pa_pipebang: ..................................... /home/cesally/.opam/4.01.0/lib/pa_pipebang
pkg_res: ............................................. /home/cesally/.opam/4.01.0/lib/res
pkg_sexplib: ......................................... /home/cesally/.opam/4.01.0/lib/sexplib
pkg_sexplib_syntax: .................................. /home/cesally/.opam/4.01.0/lib/sexplib
pkg_unix: ............................................ /home/cesally/.opam/4.01.0/lib/ocaml
pkg_variantslib: ..................................... /home/cesally/.opam/4.01.0/lib/variantslib
pkg_variantslib_syntax: .............................. /home/cesally/.opam/4.01.0/lib/variantslib
pkg_threads: ......................................... /home/cesally/.opam/4.01.0/lib/ocaml
pkg_compiler_libs: ................................... /home/cesally/.opam/4.01.0/lib/ocaml/compiler-libs
ocamldoc: ............................................ /home/cesally/.opam/4.01.0/bin/ocamldoc

./setup.exe -build
/home/cesally/.opam/4.01.0/bin/ocamlopt.opt unix.cmxa -I /home/cesally/.opam/4.01.0/lib/ocaml/ocamlbuild /home/cesally/.opam/4.01.0/lib/ocaml/ocamlbuild/ocamlbuildlib.cmxa myocamlbuild.ml /home/cesally/.opam/4.01.0/lib/ocaml/ocamlbuild/ocamlbuild.cmx -o myocamlbuild
ocamlfind ocamlc -I lib -package core_kernel -c lib/backtrace_stubs.c
mv backtrace_stubs.o lib/backtrace_stubs.o
ocamlfind ocamlc -I lib -package core_kernel -c lib/bigstring_stubs.c
+ ocamlfind ocamlc -I lib -package core_kernel -c lib/bigstring_stubs.c
lib/bigstring_stubs.c: In function ‘bigstring_recvmmsg_assume_fd_is_nonblocking_stub’:
lib/bigstring_stubs.c:592:18: error: array type has incomplete element type
lib/bigstring_stubs.c:639:7: warning: implicit declaration of function ‘recvmmsg’ [-Wimplicit-function-declaration]
lib/bigstring_stubs.c:592:18: warning: unused variable ‘hdrs’ [-Wunused-variable]
Command exited with code 2.
E: Failure("Command ''/home/cesally/.opam/4.01.0/bin/ocamlbuild' lib/libcore_stubs.a lib/dllcore_stubs.so lib/core.cma lib/core.cmxa lib/core.a lib/core.cmxs top/core_top.cma top/core_top.cmxa top/core_top.a top/core_top.cmxs -tag debug' terminated with error code 10")
make: *** [build] Error 1
The compilation of core.109.42.00 failed.
Uninstalling core.109.42.00:
  ocamlfind remove core
ocamlfind: [WARNING] No such directory: /home/cesally/.opam/4.01.0/lib/core


==== ERROR [while installing core.109.42.00] ====
# opam-version    1.0.0
# os              linux
# command         make
# path            /home/cesally/.opam/4.01.0/build/core.109.42.00
# exit-code       2
# env-file        /home/cesally/.opam/4.01.0/build/core.109.42.00/core-5f1023.env
# stdout-file     /home/cesally/.opam/4.01.0/build/core.109.42.00/core-5f1023.out
# stderr-file     /home/cesally/.opam/4.01.0/build/core.109.42.00/core-5f1023.err
### stdout ###
...[truncated]
/home/cesally/.opam/4.01.0/bin/ocamlopt.opt unix.cmxa -I /home/cesally/.opam/4.01.0/lib/ocaml/ocamlbuild /home/cesally/.opam/4.01.0/lib/ocaml/ocamlbuild/ocamlbuildlib.cmxa myocamlbuild.ml /home/cesally/.opam/4.01.0/lib/ocaml/ocamlbuild/ocamlbuild.cmx -o myocamlbuild
ocamlfind ocamlc -I lib -package core_kernel -c lib/backtrace_stubs.c
mv backtrace_stubs.o lib/backtrace_stubs.o
ocamlfind ocamlc -I lib -package core_kernel -c lib/bigstring_stubs.c
+ ocamlfind ocamlc -I lib -package core_kernel -c lib/bigstring_stubs.c
lib/bigstring_stubs.c: In function ‘bigstring_recvmmsg_assume_fd_is_nonblocking_stub’:
lib/bigstring_stubs.c:592:18: error: array type has incomplete element type
lib/bigstring_stubs.c:639:7: warning: implicit declaration of function ‘recvmmsg’ [-Wimplicit-function-declaration]
lib/bigstring_stubs.c:592:18: warning: unused variable ‘hdrs’ [-Wunused-variable]
Command exited with code 2.
### stderr ###
/tmp/ccdK70a8.o: In function `main':
test_recvmmsg.c:(.text+0x24): warning: recvmmsg is not implemented and will always fail
E: Failure("Command ''/home/cesally/.opam/4.01.0/bin/ocamlbuild' lib/libcore_stubs.a lib/dllcore_stubs.so lib/core.cma lib/core.cmxa lib/core.a lib/core.cmxs top/core_top.cma top/core_top.cmxa top/core_top.a top/core_top.cmxs -tag debug' terminated with error code 10")
make: *** [build] Error 1

'opam install -v core' failed.