title: Installation of OpenSMILE 2.3.0
body: <p>I am trying to configure OpenSMILE 2.3.0 on my Mac OS. Right now my only guess to why it's not working is that the Xcode syntax changed and OpenSMILE didn't catch up with it, so perhaps I need an older version of Xcode. Please let me know if it could be anything else. </p>
  
  <p>I tried the suggestions from the other question (<a href="https://stackoverflow.com/questions/42736091/macos-configure-error-c-compiler-cannot-create-executables">MacOS: configure: error: C compiler cannot create executables</a>) and so far it has failed to configure still. </p>
  
  <p>I tried downloading the latest Xcode command line tools to get the latest C compiler.</p>
  
  <p>Command run: </p>
  
  <p><code>bash buildStandalone.sh</code></p>
  
  <p>Result:</p>
  
  <pre><code>- aclocal.
  - autoconf.
  - autoheader.
  - automake.
  - glibtoolize
  - aclocal.
  - autoconf.
  - autoheader.
  - automake.
  - glibtoolize
  ./configure --without-portaudio --prefix=/Users/monica/music-emotion/opensmile-2.3.0/inst --enable-static --enable-shared=no
  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... gawk
  checking whether make sets $(MAKE)... yes
  checking whether make supports nested variables... yes
  checking for gcc... gcc
  checking whether the C compiler works... no
  configure: error: in `/Users/monica/music-emotion/opensmile-2.3.0':
  configure: error: C compiler cannot create executables
  See `config.log' for more details
  failed to configure openSMILE!
  </code></pre>
  
  <p>And config.log contains this:</p>
  
  <pre><code>## ----------- ##
  ## Core tests. ##
  ## ----------- ##
  
  configure:2496: checking for a BSD-compatible install
  configure:2564: result: /usr/bin/install -c
  configure:2575: checking whether build environment is sane
  configure:2630: result: yes
  configure:2781: checking for a thread-safe mkdir -p
  configure:2820: result: ./install-sh -c -d
  configure:2827: checking for gawk
  configure:2843: found /usr/local/bin/gawk
  configure:2854: result: gawk
  configure:2865: checking whether make sets $(MAKE)
  configure:2887: result: yes
  configure:2916: checking whether make supports nested variables
  configure:2933: result: yes
  configure:3110: checking for gcc
  configure:3126: found /usr/bin/gcc
  configure:3137: result: gcc
  configure:3366: checking for C compiler version
  configure:3375: gcc --version &gt;&amp;5
  Apple clang version 11.0.0 (clang-1100.0.33.5)
  Target: x86_64-apple-darwin18.7.0
  Thread model: posix
  InstalledDir: /Library/Developer/CommandLineTools/usr/bin
  Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
  configure:3386: $? = 0
  configure:3375: gcc -v &gt;&amp;5
  Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
  Apple clang version 11.0.0 (clang-1100.0.33.5)
  Target: x86_64-apple-darwin18.7.0
  Thread model: posix
  InstalledDir: /Library/Developer/CommandLineTools/usr/bin
  configure:3386: $? = 0
  configure:3375: gcc -V &gt;&amp;5
  clang: error: unsupported option '-V -Wno-framework-include-private-from-public'
  clang: error: no input files
  configure:3386: $? = 1
  configure:3375: gcc -qversion &gt;&amp;5
  clang: error: unknown argument '-qversion', did you mean '--version'?
  clang: error: no input files
  configure:3386: $? = 1
  configure:3406: checking whether the C compiler works
  configure:3428: gcc -O2 -mfpmath=sse -msse2 -D__STATIC_LINK -DOPENSMILE_BUILD -DBUILD_SVMSMO -DBUILD_SVMSMO -DBUILD_LIBSVM -DBUILD_RNN -DBUILD_WITHOUT_EXPERIMENTAL -lrt -lm -lpthread -lc conftest.c  &gt;&amp;5
  ld: library not found for -lrt
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  configure:3432: $? = 1
  configure:3470: result: no
  configure: failed program was:
  | /* confdefs.h */
  | #define PACKAGE_NAME "openSMILE"
  | #define PACKAGE_TARNAME "opensmile"
  | #define PACKAGE_VERSION "2.3.0"
  | #define PACKAGE_STRING "openSMILE 2.3.0"
  | #define PACKAGE_BUGREPORT ""
  | #define PACKAGE_URL ""
  | #define PACKAGE "opensmile"
  | #define VERSION "2.3.0"
  | /* end confdefs.h.  */
  |
  | int
  | main ()
  | {
  |
  |   ;
  |   return 0;
  | }
  configure:3475: error: in `/Users/monica/music-emotion/opensmile-2.3.0':
  configure:3477: error: C compiler cannot create executables
  See `config.log' for more details
  </code></pre>