I followed all the instructions for setting up gmp with cygwin,
./configure make make install and make check.
The libgmp.a is in the path C:/C++/gmp-6.1.2/.libs
I'm using this command to compile with g++
g++ -L/C:/C++/gmp-6.1.2/.libs -I/C:/C++/gmp-6.1.2 C:/foo/foo.cpp -lgmp
I get an error message that says : could not find -lgmp
What am i missing?
Why not install the gmp from the cygwin distribution?
Related
g++ -c -I"C:/Users\hp/Documents/Projects/arb" test_arb.cpp
it is generating test_arb.o file but no .exe
./a.out is not working either.
How do I run it then?
PS: I am on windows 10. I have msys2 installed followed by g++ installed via pacman on msys2.
I am trying to build Apache Server v 2.4.38 on RHEL 7.3 and I am using apr 1.6.5, apr-util 1.6.1, and pcre 8.42.
I am running following commands
./configure --with-included-apr --with-pcre=/data/abc/installed/pcre_installed --prefix=/data/abc/installed/httpd_installed
make
While running 'make' I am receiving error
/bin/sh /data/abc/installed/httpd-2.4.38/srclib/apr/libtool --silent --mode=compile gcc -g -O2 -pthread -DHAVE_CONFIG_H -DLINUX -D_REENTRANT -D_GNU_SOURCE -I/data/abc/installed/httpd-2.4.38/srclib/apr-util/include -I/data/abc/installed/httpd-2.4.38/srclib/apr-util/include/private -I/data/abc/installed/httpd-2.4.38/srclib/apr/include -o xml/apr_xml.lo -c xml/apr_xml.c && touch xml/apr_xml.lo
xml/apr_xml.c:35:19: fatal error: expat.h: No such file or directory
#include <expat.h>
Download expat-2.2.6.tar.bz2 from https://libexpat.github.io/.
Extract expat using following command
tar xvjf expat-2.2.6.tar.bz2 -C /path-to-dir
Change to the extracted expat directory.
Build expat using following commands
./configure --prefix=/path-to-expat-installation-dir
make
make install
While building Apache Httpd from source specify --with-expat
./configure --with-included-apr --prefix=/path-to-apache-installation --with-expat=/path-to-expat-installation-dir
For anyone else coming across this:
OP had to do this because they didn't have sudo access. If you do, usually you don't need to download the source of expat manually; installing via package manager is way easier. Unless the software you are compiling requires a newer version of expat than your RPM repos provide.
So for the RHEL family of OSes you can just do sudo <dnf|yum> install expat expat-devel, then proceed with what you were compiling.
Do you have the expat library installed? (Because that's where the expat.h comes from.)
https://libexpat.github.io/
If you cannot install it globally to the system, I'm sure Apache's ./configure script must have an option to support a custom location for the library as well.
Tried In Ubuntu
apt install libexpat1-dev
For RHEL, I would suggest #cyqsimon's answer
I have installed mingw64-x86_64-gcc-g++ package in Cygwin. However, which g++ does not show any installed g++. Where is the installed compiler?
/bin/g++ is part of the gcc-g++ package.
/bin/x86_64-w64-mingw32-g++ is part of the mingw64-x86_64-gcc-g++ package.
Example
The following is the error which I am getting. Please help me to fix it.
apple:mlpy-3.5.0 apple$ python setup.py install
running install
running build
running build_py
running build_ext
building 'mlpy.gsl' extension
cc -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -Qunused-arguments -Qunused-arguments -arch x86_64 -arch i386 -pipe -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -I/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/numpy/core/include -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c mlpy/gsl/gsl.c -o build/temp.macosx-10.9-intel-2.7/mlpy/gsl/gsl.o
mlpy/gsl/gsl.c:223:10: fatal error: 'gsl/gsl_sf.h' file not found
#include "gsl/gsl_sf.h"
^
1 error generated.
MLPy depends on GNU Scientific Library (GSL), which you need to install first.
You can install it either with brew install gsl or manually from source.
For manual installation, instructions can be found here. The relevant steps are as follows:
go to: http://www.gnu.org/prep/ftp.html
click on an ftp link close to your location
find the gsl/ directory and click on it
find the gsl-VERSION.tar.gz file, where version is 1.14 or greater. Click on that file to download it.
In a terminal window extract the tar.gz file using tar -xzf gsl-VERSION.tar.gz and then cd to the ./gsl-VERSION directory
Look at the INSTALL file. It will probably tell you to run ./configure, then make, and then make install (and you might have to
login as the superuser (sudo)
I am actually getting the same issue today while installing mlpy. Based on the mlpy documentation. Here is the method to solve this issue.
According to the installation section in the mlpy documentation:
If the GSL header files or shared library are in non-standard locations on your system, use the --include-dirs
and --rpath options to build_ext:
$ python setup.py build_ext --include-dirs=/path/to/header --rpath=/path/to/lib
$ python setup.py install
We have to assign the header and lib. Based on How to obtain and install GSL,
Under Search Paths/Header Search Paths type /opt/local/include
Under Search Paths/Library Search Paths type /opt/local/lib
The quick answer is running the below command:
sudo python setup.py build_ext --include-dirs=/opt/local/include --rpath=/opt/local/lib
sudo python setup.py install
Hope this will be helpful.
I am trying to compile my c++ project (working with g++ with boost) with clang. I have successfully compile boost-libraries (1.53) with clang tool-chain. I am using CMake to compile my project, compilation is failing with following error.
In file included from /home/dilawar/Works/hpc21/bliff/BlifParserAndPartitioner/src/expression_graph.h:21:
/usr/local/include/boost/graph/graph_traits.hpp:14:10: fatal error: 'iterator' file not found
#include <iterator>
^
1 error generated.
I am passing -stdlib=libc++ to compiler. I am not sure which package I should install (ubuntu) to install libc++. I have clang and llvm installed on my machine.
Do I have to download and compile libc++ or it is installed automatically when one install clang?
When you pass -stdlib=libc++ the clang driver looks for header files in a different
directory w.r.t. when you don't pass the flag. You have to install libc++ separately. The libc++ webpage (http://libcxx.llvm.org/) has some details on how to install libc++ using CMake.
This webpage might also be useful:
http://marshall.calepin.co/llvmclang-and-standard-libraries-on-mac-os-x.html