title: configure: error: C compiler cannot create executables
body: <p>I've checked a number of similar questions on stackoverflow but haven't found an answer yet.</p>
  
  <p>I'm trying to install memcached on Lion OSX as <a href="http://www.glenscott.co.uk/blog/2009/08/30/install-memcached-php-extension-on-os-x-snow-leopard/" rel="noreferrer">shown here</a>.</p>
  
  <p>Here's what I'm getting:</p>
  
  <pre><code>j-court-demones-macbook-pro:libevent-1.4.12-stable jcourtdemone$ ./configure; make
  checking for a BSD-compatible install... /usr/bin/install -c
  checking whether build environment is sane... yes
  checking for a thread-safe mkdir -p... ./install-sh -c -d
  checking for gawk... no
  checking for mawk... no
  checking for nawk... no
  checking for awk... awk
  checking whether make sets $(MAKE)... yes
  checking for gcc... gcc
  checking for C compiler default output file name... 
  configure: error: in `/tmp/libevent-1.4.12-stable':
  configure: error: C compiler cannot create executables
  See `config.log' for more details.
  make: *** No targets specified and no makefile found.  Stop.
  </code></pre>
  
  <p>I've reinstalled Xcode as was recommended in a couple places, but no dice.</p>
  
  <p>Here's my config.log:</p>
  
  <pre><code>This file contains any messages produced by compilers while
  running configure, to aid debugging if configure makes a mistake.
  
  It was created by configure, which was
  generated by GNU Autoconf 2.63.  Invocation command line was
  
    $ ./configure 
  
  ## --------- ##
  ## Platform. ##
  ## --------- ##
  
  hostname = j-court-demones-macbook-pro.local
  uname -m = x86_64
  uname -r = 11.3.0
  uname -s = Darwin
  uname -v = Darwin Kernel Version 11.3.0: Thu Jan 12 18:47:41 PST 2012; root:xnu-1699.24.23~1/RELEASE_X86_64
  
  /usr/bin/uname -p = i386
  /bin/uname -X     = unknown
  
  /bin/arch              = unknown
  /usr/bin/arch -k       = unknown
  /usr/convex/getsysinfo = unknown
  /usr/bin/hostinfo      = Mach kernel version:
       Darwin Kernel Version 11.3.0: Thu Jan 12 18:47:41 PST 2012; root:xnu-1699.24.23~1/RELEASE_X86_64
  Kernel configured for up to 8 processors.
  4 processors are physically available.
  8 processors are logically available.
  Processor type: i486 (Intel 80486)
  Processors active: 0 1 2 3 4 5 6 7
  Primary memory available: 4.00 gigabytes
  Default processor set: 109 tasks, 599 threads, 8 processors
  Load average: 0.98, Mach factor: 7.01
  /bin/machine           = unknown
  /usr/bin/oslevel       = unknown
  /bin/universe          = unknown
  
  PATH: /opt/local/bin
  PATH: /opt/local/sbin
  PATH: /opt/local/bin
  PATH: /opt/local/sbin
  PATH: /usr/bin
  PATH: /Developer/usr/bin
  PATH: /usr/bin
  PATH: /bin
  PATH: /usr/sbin
  PATH: /sbin
  PATH: /usr/local/bin
  PATH: /usr/X11/bin
  
  
  ## ----------- ##
  ## Core tests. ##
  ## ----------- ##
  
  configure:2077: checking for a BSD-compatible install
  configure:2145: result: /usr/bin/install -c
  configure:2156: checking whether build environment is sane
  configure:2199: result: yes
  configure:2224: checking for a thread-safe mkdir -p
  configure:2263: result: ./install-sh -c -d
  configure:2276: checking for gawk
  configure:2306: result: no
  configure:2276: checking for mawk
  configure:2306: result: no
  configure:2276: checking for nawk
  configure:2306: result: no
  configure:2276: checking for awk
  configure:2292: found /usr/bin/awk
  configure:2303: result: awk
  configure:2314: checking whether make sets $(MAKE)
  configure:2336: result: yes
  configure:2575: checking for gcc
  configure:2591: found /Developer/usr/bin/gcc
  configure:2602: result: gcc
  configure:2834: checking for C compiler version
  configure:2842: gcc --version &gt;&amp;5
  i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5484)
  Copyright (C) 2005 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:2846: $? = 0
  configure:2853: gcc -v &gt;&amp;5
  Using built-in specs.
  Target: i686-apple-darwin9
  Configured with: /var/tmp/gcc/gcc-5484~1/src/configure --disable-checking -enable-werror --prefix=/usr --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-transform-name=/^[cg][^.-]*$/s/$/-4.0/ --with-gxx-include-dir=/include/c++/4.0.0 --with-slibdir=/usr/lib --build=i686-apple-darwin9 --with-arch=apple --with-tune=generic --host=i686-apple-darwin9 --target=i686-apple-darwin9
  Thread model: posix
  gcc version 4.0.1 (Apple Inc. build 5484)
  configure:2857: $? = 0
  configure:2864: gcc -V &gt;&amp;5
  gcc-4.0: argument to `-V' is missing
  configure:2868: $? = 1
  configure:2891: checking for C compiler default output file name
  configure:2913: gcc    conftest.c  &gt;&amp;5
  ld: library not found for -lcrt1.10.5.o
  collect2: ld returned 1 exit status
  configure:2917: $? = 1
  configure:2955: result: 
  configure: failed program was:
  | /* confdefs.h.  */
  | #define PACKAGE_NAME ""
  | #define PACKAGE_TARNAME ""
  | #define PACKAGE_VERSION ""
  | #define PACKAGE_STRING ""
  | #define PACKAGE_BUGREPORT ""
  | #define PACKAGE "libevent"
  | #define VERSION "1.4.12-stable"
  | /* end confdefs.h.  */
  | 
  | int
  | main ()
  | {
  | 
  |   ;
  |   return 0;
  | }
  configure:2961: error: in `/tmp/libevent-1.4.12-stable':
  configure:2964: error: C compiler cannot create executables
  See `config.log' for more details.
  
  ## ---------------- ##
  ## Cache variables. ##
  ## ---------------- ##
  
  ac_cv_env_CCC_set=
  ac_cv_env_CCC_value=
  ac_cv_env_CC_set=
  ac_cv_env_CC_value=
  ac_cv_env_CFLAGS_set=
  ac_cv_env_CFLAGS_value=
  ac_cv_env_CPPFLAGS_set=
  ac_cv_env_CPPFLAGS_value=
  ac_cv_env_CPP_set=
  ac_cv_env_CPP_value=
  ac_cv_env_CXXCPP_set=
  ac_cv_env_CXXCPP_value=
  ac_cv_env_CXXFLAGS_set=
  ac_cv_env_CXXFLAGS_value=
  ac_cv_env_CXX_set=
  ac_cv_env_CXX_value=
  ac_cv_env_F77_set=
  ac_cv_env_F77_value=
  ac_cv_env_FFLAGS_set=
  ac_cv_env_FFLAGS_value=
  ac_cv_env_LDFLAGS_set=
  ac_cv_env_LDFLAGS_value=
  ac_cv_env_LIBS_set=
  ac_cv_env_LIBS_value=
  ac_cv_env_build_alias_set=
  ac_cv_env_build_alias_value=
  ac_cv_env_host_alias_set=
  ac_cv_env_host_alias_value=
  ac_cv_env_target_alias_set=
  ac_cv_env_target_alias_value=
  ac_cv_path_install='/usr/bin/install -c'
  ac_cv_prog_AWK=awk
  ac_cv_prog_ac_ct_CC=gcc
  ac_cv_prog_make_make_set=yes
  
  ## ----------------- ##
  ## Output variables. ##
  ## ----------------- ##
  
  ACLOCAL='${SHELL} /tmp/libevent-1.4.12-stable/missing --run aclocal-1.10'
  AMDEPBACKSLASH=''
  AMDEP_FALSE=''
  AMDEP_TRUE=''
  AMTAR='${SHELL} /tmp/libevent-1.4.12-stable/missing --run tar'
  AR=''
  AUTOCONF='${SHELL} /tmp/libevent-1.4.12-stable/missing --run autoconf'
  AUTOHEADER='${SHELL} /tmp/libevent-1.4.12-stable/missing --run autoheader'
  AUTOMAKE='${SHELL} /tmp/libevent-1.4.12-stable/missing --run automake-1.10'
  AWK='awk'
  BUILD_WIN32_FALSE=''
  BUILD_WIN32_TRUE=''
  CC='gcc'
  CCDEPMODE=''
  CFLAGS=''
  CPP=''
  CPPFLAGS=''
  CXX=''
  CXXCPP=''
  CXXDEPMODE=''
  CXXFLAGS=''
  CYGPATH_W='echo'
  DEFS=''
  DEPDIR=''
  DSYMUTIL=''
  ECHO='/bin/echo'
  ECHO_C='\c'
  ECHO_N=''
  ECHO_T=''
  EGREP=''
  EXEEXT=''
  F77=''
  FFLAGS=''
  GREP=''
  INSTALL_DATA='${INSTALL} -m 644'
  INSTALL_PROGRAM='${INSTALL}'
  INSTALL_SCRIPT='${INSTALL}'
  INSTALL_STRIP_PROGRAM='$(install_sh) -c -s'
  LDFLAGS=''
  LIBOBJS=''
  LIBS=''
  LIBTOOL=''
  LIBTOOL_DEPS=''
  LN_S=''
  LTLIBOBJS=''
  MAKEINFO='${SHELL} /tmp/libevent-1.4.12-stable/missing --run makeinfo'
  MKDIR_P='./install-sh -c -d'
  NMEDIT=''
  OBJEXT=''
  PACKAGE='libevent'
  PACKAGE_BUGREPORT=''
  PACKAGE_NAME=''
  PACKAGE_STRING=''
  PACKAGE_TARNAME=''
  PACKAGE_VERSION=''
  PATH_SEPARATOR=':'
  RANLIB=''
  SED=''
  SET_MAKE=''
  SHELL='/bin/sh'
  STRIP=''
  VERSION='1.4.12-stable'
  ac_ct_CC='gcc'
  ac_ct_CXX=''
  ac_ct_F77=''
  am__fastdepCC_FALSE=''
  am__fastdepCC_TRUE=''
  am__fastdepCXX_FALSE=''
  am__fastdepCXX_TRUE=''
  am__include=''
  am__isrc=''
  am__leading_dot='.'
  am__quote=''
  am__tar='${AMTAR} chof - "$$tardir"'
  am__untar='${AMTAR} xf -'
  bindir='${exec_prefix}/bin'
  build=''
  build_alias=''
  build_cpu=''
  build_os=''
  build_vendor=''
  datadir='${datarootdir}'
  datarootdir='${prefix}/share'
  docdir='${datarootdir}/doc/${PACKAGE}'
  dvidir='${docdir}'
  exec_prefix='NONE'
  host=''
  host_alias=''
  host_cpu=''
  host_os=''
  host_vendor=''
  htmldir='${docdir}'
  includedir='${prefix}/include'
  infodir='${datarootdir}/info'
  install_sh='$(SHELL) /tmp/libevent-1.4.12-stable/install-sh'
  libdir='${exec_prefix}/lib'
  libexecdir='${exec_prefix}/libexec'
  localedir='${datarootdir}/locale'
  localstatedir='${prefix}/var'
  mandir='${datarootdir}/man'
  mkdir_p='$(top_builddir)/./install-sh -c -d'
  oldincludedir='/usr/include'
  pdfdir='${docdir}'
  prefix='/usr/local'
  program_transform_name='s,x,x,'
  psdir='${docdir}'
  sbindir='${exec_prefix}/sbin'
  sharedstatedir='${prefix}/com'
  sysconfdir='${prefix}/etc'
  target_alias=''
  
  ## ----------- ##
  ## confdefs.h. ##
  ## ----------- ##
  
  #define PACKAGE_NAME ""
  #define PACKAGE_TARNAME ""
  #define PACKAGE_VERSION ""
  #define PACKAGE_STRING ""
  #define PACKAGE_BUGREPORT ""
  #define PACKAGE "libevent"
  #define VERSION "1.4.12-stable"
  
  configure: exit 77
  </code></pre>