FreeBSD/Linux Kernel Cross Reference
sys/contrib/libsodium/autogen.sh

     #! /bin/sh
     
     if glibtoolize --version > /dev/null 2>&1; then
       LIBTOOLIZE='glibtoolize'
     else
       LIBTOOLIZE='libtoolize'
     fi
     
     command -v command >/dev/null 2>&1 || {
      echo "command is required, but wasn't found on this system"
      exit 1
    }
    
    command -v $LIBTOOLIZE >/dev/null 2>&1 || {
      echo "libtool is required, but wasn't found on this system"
      exit 1
    }
    
    command -v autoconf >/dev/null 2>&1 || {
      echo "autoconf is required, but wasn't found on this system"
      exit 1
    }
    
    command -v automake >/dev/null 2>&1 || {
      echo "automake is required, but wasn't found on this system"
      exit 1
    }
    
    if autoreconf --version > /dev/null 2>&1 ; then
      exec autoreconf -ivf
    fi
    
    $LIBTOOLIZE && \
    aclocal && \
    automake --add-missing --force-missing --include-deps && \
    autoconf

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