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Every once in a while I need to compile a program with GCC, instead of the default FreeBSD compiler Clang. To accomplish this I install the latest GCC and set it over Clang with environment variables.

• Install GCC:
  

  pkg install gcc49
  

  • (Optional) Install GCC from the ports tree:
    

    cd /usr/port/lang/gcc49
    make install clean
    

• Set the CC, CXX, and CPP environment variables to use GCC:
  

  setenv CC gcc49
  setenv CXX g++49
  setenv CPP cpp49
  

  • (Optional) Environment variables can be set at build time:
    

    env CC="gcc49" CXX="g++49" CPP="cpp49" CFLAGS="-std=c++11" make
    

Resources¶

• http://unix.stackexchange.com/questions/130639/how-do-i-install-the-latest-gcc-on-freebsd