numpy not found when run ./configure

when I run ./configure this is the output I get:

checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking target system type... x86_64-pc-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a race-free mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking how to create a pax tar archive... gnutar
checking whether make supports nested variables... (cached) yes
checking whether make supports the include directive... yes (GNU style)
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether the compiler supports GNU C... yes
checking whether gcc accepts -g... yes
checking for gcc option to enable C11 features... none needed
checking whether gcc understands -c and -o together... yes
checking dependency style of gcc... gcc3
checking for library containing strerror... none required
checking for stdio.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for strings.h... yes
checking for sys/stat.h... yes
checking for sys/types.h... yes
checking for unistd.h... yes
checking for wchar.h... yes
checking for minix/config.h... no
checking whether it is safe to define __EXTENSIONS__... yes
checking whether _XOPEN_SOURCE should be defined... no
checking for g++... g++
checking whether the compiler supports GNU C++... yes
checking whether g++ accepts -g... yes
checking for g++ option to enable C++11 features... none needed
checking dependency style of g++... gcc3
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking how to print strings... printf
checking for a sed that does not truncate output... /bin/sed
checking for fgrep... /bin/grep -F
checking for ld used by gcc... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 1572864
checking how to convert x86_64-pc-linux-gnu file names to
x86_64-pc-linux-gnu format... func_convert_file_noop
checking how to convert x86_64-pc-linux-gnu file names to toolchain
format... func_convert_file_noop
checking for /usr/bin/ld option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for dlltool... no
checking how to associate runtime and link libraries... printf %s\n
checking for ar... ar
checking for archiver @FILE support... @
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for a working dd... /bin/dd
checking how to truncate binary pipes... /bin/dd bs=4096 count=1
checking for mt... mt
checking if mt is a manifest tool... no
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -fPIC -DPIC
checking if gcc PIC flag -fPIC -DPIC works... yes
checking if gcc static flag -static works... yes
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/usr/bin/ld -m elf_x86_64) supports shared
libraries... yes
checking whether -lc should be explicitly linked in... no
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... no
checking how to run the C++ preprocessor... g++ -E
checking for ld used by g++... /usr/bin/ld -m elf_x86_64
checking if the linker (/usr/bin/ld -m elf_x86_64) is GNU ld... yes
checking whether the g++ linker (/usr/bin/ld -m elf_x86_64) supports shared
libraries... yes
checking for g++ option to produce PIC... -fPIC -DPIC
checking if g++ PIC flag -fPIC -DPIC works... yes
checking if g++ static flag -static works... yes
checking if g++ supports -c -o file.o... yes
checking if g++ supports -c -o file.o... (cached) yes
checking whether the g++ linker (/usr/bin/ld -m elf_x86_64) supports shared
libraries... yes
checking dynamic linker characteristics... (cached) GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking whether g++ supports C++17 features by default... no
checking whether g++ supports C++17 features with -std=gnu++17... yes
configure: WARNING: C++17 is not yet standardized, so the checks may change
in incompatible ways anytime
checking whether to enable debug info... no
checking whether to enable parallel algorithms with openmp... checking for
OpenMP flag of C++ compiler... -fopenmp
checking whether to enable cairo drawing... yes
checking for EXPAT... yes
checking for a Python interpreter with version >= 2.7... python
checking for python... /usr/bin/python
checking for python version... 2.7
checking for python platform... linux2
checking for python script directory...
${prefix}/lib/python2.7/dist-packages
checking for python extension module directory...
${exec_prefix}/lib/python2.7/dist-packages
checking for python2.7... (cached) /usr/bin/python
checking for a version of Python >= '2.1.0'... yes
checking for a version of Python == '2.7.17'... yes
checking for the distutils Python package... yes
checking for Python include path... -I/usr/include/python2.7
checking for Python library path... -L/usr/lib -lpython2.7
checking for Python site-packages path... /usr/lib/python2.7/dist-packages
checking python extra libraries... -lpthread -ldl -lutil -lm
checking python extra linking flags... -Xlinker -export-dynamic -Wl,-O1
-Wl,-Bsymbolic-functions
checking consistency of all components of python development environment...
yes
checking for boostlib >= 1.55.0 (105500)... yes
checking whether the Boost::Python library is available... yes
checking whether boost_python27 is the correct library... no
checking whether boost_python-py27 is the correct library... yes
checking whether the Boost::IOStreams library is available... yes
checking for exit in -lboost_iostreams... yes
checking whether the Boost::Regex library is available... yes
checking for exit in -lboost_regex... yes
checking whether the Boost::Context library is available... yes
checking for exit in -lboost_context... yes
checking whether the Boost::Coroutine library is available... yes
checking for exit in -lboost_coroutine... yes
checking whether the Boost::Graph library is available... yes
checking for exit in -lboost_graph... yes
checking whether the Boost::Thread library is available... yes
checking for exit in -lboost_thread... yes
checking for __gmpz_init in -lgmp... yes
checking for __gmpz_init in -lgmp... (cached) yes
checking whether CGAL is available in /usr... yes
checking whether to enable debbuging with valgrind... no
checking python module: numpy... no
configure: error: failed to find required module numpy

I have numpy istalled in the right place (Ibelieve)
To check this I've run : pip install numpy
and got:
numpy in /home/kaspersegers/.local/lib/python3.6/site-packages (1.17.3)

What can I do to remedy this?

Ni!

Your check says you've got numpy installed for python3.6 ... and yet your
configure output tells us you're compiling for python-2.7.

Which version of graph-tool are you even compiling ? Recent versions
require python 3. Old versions are not supported and not recommended. Also,
make sure you have a very good reason to be compiling it instead of using
one of the many prepackaged options
<https://git.skewed.de/count0/graph-tool/-/wikis/installation-instructions&gt;\.

Cheers,

.~´

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Thanks for your reply I'm trying to install graph-tool-2.37 is that an older
version ? I thougth it was a newer one so python3 should be all right no?

Thanks for your reply!

I'm trying to install graph-tool-2.37 which I believed to be a newer
version, so Python3 should be all right or am I wrong?

cheers Kasper

Ni! Hi,

That is the good version. It seems the configure script wasn't updated to
require python3 until later.

I'm going to stress this again: please, first try using a prepackaged build.

Only in case none of the prepackaged options serve you, then:

0. Make sure you've read and understood the the Manual compilation
instructions
<https://git.skewed.de/count0/graph-tool/-/wikis/installation-instructions#manual-compilation&gt;
.

1. You must tell configure to use the right version of python by calling it
with `PYTHON=python3 ./configure`. In this way it will hopefully detect the
right python version.

2. If that doesn't help, try checking out and compiling the `master` branch
from git. Configure should make all the right checks in that (when using
git branches you'll have to first generate `configure` yourself by running
`./autogen.sh`). If you don't know git and still want to try this, there
are plenty of tutorials online.

If you need to ask more questions, describe in detail the system you're
compiling in (distribution, version, how was python3 installed etc), and
dump the whole of config.log into some pastebin-like URL. Otherwise we
won't be able to help.

Best,
.~´

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