buildroot

#!/bin/sh

# vi: set sw=4 ts=4:

​

export LC_ALL=C

​

# Verify that grep works

echo "WORKS" | grep "WORKS" >/dev/null 2>&1

if test $? != 0 ; then

    echo

    echo "grep doesn't work"

    exit 1

fi

​

# sanity check for CWD in LD_LIBRARY_PATH

# try not to rely on egrep..

if test -n "$LD_LIBRARY_PATH" ; then

    echo TRiGGER_start"$LD_LIBRARY_PATH"TRiGGER_end | grep '::' >/dev/null 2>&1 ||

    echo TRiGGER_start"$LD_LIBRARY_PATH"TRiGGER_end | grep ':\.:' >/dev/null 2>&1 ||

    echo TRiGGER_start"$LD_LIBRARY_PATH"TRiGGER_end | grep 'TRiGGER_start:' >/dev/null 2>&1 ||

    echo TRiGGER_start"$LD_LIBRARY_PATH"TRiGGER_end | grep 'TRiGGER_start\.:' >/dev/null 2>&1 ||

    echo TRiGGER_start"$LD_LIBRARY_PATH"TRiGGER_end | grep ':TRiGGER_end' >/dev/null 2>&1 ||

    echo TRiGGER_start"$LD_LIBRARY_PATH"TRiGGER_end | grep ':\.TRiGGER_end' >/dev/null 2>&1 ||

    echo TRiGGER_start"$LD_LIBRARY_PATH"TRiGGER_end | grep 'TRiGGER_start\.TRiGGER_end' >/dev/null 2>&1

    if test $? = 0; then

        echo

        echo "You seem to have the current working directory in your"

        echo "LD_LIBRARY_PATH environment variable. This doesn't work."

        exit 1;

    fi

fi;

​

# sanity check for CWD in PATH. Having the current working directory

# in the PATH makes the toolchain build process break.

# try not to rely on egrep..

if test -n "$PATH" ; then

    echo TRiGGER_start"$PATH"TRiGGER_end | grep ':\.:' >/dev/null 2>&1 ||

    echo TRiGGER_start"$PATH"TRiGGER_end | grep 'TRiGGER_start\.:' >/dev/null 2>&1 ||

    echo TRiGGER_start"$PATH"TRiGGER_end | grep ':\.TRiGGER_end' >/dev/null 2>&1 ||

    echo TRiGGER_start"$PATH"TRiGGER_end | grep 'TRiGGER_start\.TRiGGER_end' >/dev/null 2>&1

    if test $? = 0; then

        echo

        echo "You seem to have the current working directory in your"

        echo "PATH environment variable. This doesn't work."

        exit 1;

    fi

fi;

​

if test -n "$PERL_MM_OPT" ; then

    echo

    echo "You have PERL_MM_OPT defined because Perl local::lib"

    echo "is installed on your system. Please unset this variable"

    echo "before starting Buildroot, otherwise the compilation of"

    echo "Perl related packages will fail"

    exit 1

fi

​

check_prog_host()

{

    prog="$1"

    if ! which $prog > /dev/null ; then

        echo >&2

        echo "You must install '$prog' on your build machine" >&2

        exit 1