Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

When I am trying to install a openvpn from a tarball , following error occurs

checking whether the C compiler works... no
configure: error: in `/home/shubhamd/Downloads/openvpn-2.3.2': configure: error: C compiler cannot create executables

See `config.log' for more details

and the config.log is as follows :

This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by OpenVPN configure 2.3.2, which was
generated by GNU Autoconf 2.69.  Invocation command line was

  $ ./configure 

## --------- ##
## Platform. ##
## --------- ##

hostname = shubhamd
uname -m = x86_64
uname -r = 3.11.0-12-generic
uname -s = Linux
uname -v = #19-Ubuntu SMP Wed Oct 9 16:20:46 UTC 2013

/usr/bin/uname -p = unknown
/bin/uname -X     = unknown

/bin/arch              = unknown
/usr/bin/arch -k       = unknown
/usr/convex/getsysinfo = unknown
/usr/bin/hostinfo      = unknown
/bin/machine           = unknown
/usr/bin/oslevel       = unknown
/bin/universe          = unknown

PATH: /usr/local/sbin
PATH: /usr/local/bin
PATH: /usr/sbin
PATH: /usr/bin
PATH: /sbin
PATH: /bin
PATH: /usr/games
PATH: /usr/local/games


## ----------- ##
## Core tests. ##
## ----------- ##

configure:2873: checking for a BSD-compatible install
configure:2941: result: /usr/bin/install -c
configure:2952: checking whether build environment is sane
configure:3002: result: yes
configure:3143: checking for a thread-safe mkdir -p
configure:3182: result: /bin/mkdir -p
configure:3195: checking for gawk
configure:3211: found /usr/bin/gawk
configure:3222: result: gawk
configure:3233: checking whether make sets $(MAKE)
configure:3255: result: yes
configure:3339: checking build system type
configure:3353: result: x86_64-unknown-linux-gnu
configure:3373: checking host system type
configure:3386: result: x86_64-unknown-linux-gnu
configure:3418: checking for style of include used by make
configure:3446: result: GNU
configure:3517: checking for gcc
configure:3533: found /usr/bin/gcc
configure:3544: result: gcc
configure:3773: checking for C compiler version
configure:3782: gcc --version >&5
gcc (Ubuntu/Linaro 4.8.1-10ubuntu8) 4.8.1
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

configure:3793: $? = 0
configure:3782: gcc -v >&5
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.8.1-10ubuntu8' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.8.1 (Ubuntu/Linaro 4.8.1-10ubuntu8) 
configure:3793: $? = 0
configure:3782: gcc -V >&5
gcc: error: unrecognized command line option '-V'
gcc: fatal error: no input files
compilation terminated.
configure:3793: $? = 4
configure:3782: gcc -qversion >&5
gcc: error: unrecognized command line option '-qversion'
gcc: fatal error: no input files
compilation terminated.
configure:3793: $? = 4
configure:3813: checking whether the C compiler works
configure:3835: gcc    conftest.c  >&5
/usr/bin/ld: cannot find crt1.o: No such file or directory
/usr/bin/ld: cannot find crti.o: No such file or directory
/usr/bin/ld: cannot find -lc
/usr/bin/ld: cannot find crtn.o: No such file or directory
collect2: error: ld returned 1 exit status
configure:3839: $? = 1
configure:3877: result: no
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME "OpenVPN"
| #define PACKAGE_TARNAME "openvpn"
| #define PACKAGE_VERSION "2.3.2"
| #define PACKAGE_STRING "OpenVPN 2.3.2"
| #define PACKAGE_BUGREPORT "openvpn-users@lists.sourceforge.net"
| #define PACKAGE_URL ""
| #define OPENVPN_VERSION_RESOURCE 2,3,2,0
| #define PACKAGE "openvpn"
| #define VERSION "2.3.2"
| /* end confdefs.h.  */
| 
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:3882: error: in `/home/shubhamd/Downloads/openvpn-2.3.2':
configure:3884: error: C compiler cannot create executables
See `config.log' for more details

How to fix the error ?

share|improve this question
    
What is the output from which gcc and from file $(which gcc) ? –  Hennes Jan 7 at 19:13
    
which gcc gives /usr/bin/gcc and file $(which gcc) gives /usr/bin/gcc: symbolic link to 'gcc-4.8' –  vertexion Jan 7 at 19:18
    
I asked because similar questions like this onen gave the same error when GCC was not the actual compuer or when there are some linker problems (roadmr already covered that part). –  Hennes Jan 7 at 19:20
add comment

1 Answer 1

up vote 2 down vote accepted

It's likely you need to install the libc6-dev package. The errors you see indicate the linker (ld) is unable to link against the C library (and the object files it mentions, crt1.o for example, are part of this package).

I suggest you do sudo apt-get install build-essential, it will install, well, the essential tools and packages for basic builds to work. build-essential is a meta-package, which doesn't install any files of its own but depends on the required packages, so it's a safe bet to install it.

share|improve this answer
    
should I install both libc6-dev and build-essential packages ? –  vertexion Jan 7 at 19:32
    
just install build-essential, it will cause libc6-dev to be installed. The advantage of installing build-essential is that it will also take care of installing any additional packages you may be missing. –  roadmr Jan 7 at 20:24
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.