<?xml version="1.0"?>
<tool_dependency>
    <package name="tiff" version="4.0.3">
        <install version="1.0">
            <actions>
                <action type="download_by_url">ftp://ftp.remotesensing.org/pub/libtiff/tiff-4.0.3.tar.gz</action>
                <action type="autoconf" />
                <action type="set_environment">
                    <environment_variable action="prepend_to" name="PKG_CONFIG_PATH">$INSTALL_DIR/lib/pkgconfig</environment_variable>
                    <environment_variable action="set_to" name="TIFF_ROOT">$INSTALL_DIR</environment_variable>
                </action>
            </actions>
        </install>
        <readme>
        </readme>
    </package>
</tool_dependency>

<?xml version="1.0"?>
<tool_dependency>
    <package name="tiff" version="4.0.3">
        <install version="1.0">
            <actions>
                <action type="download_by_url">ftp://ftp.remotesensing.org/pub/libtiff/tiff-4.0.3.tar.gz</action>
                <action type="autoconf" />
                <action type="set_environment">
                    <environment_variable action="prepend_to" name="PKG_CONFIG_PATH">$INSTALL_DIR/lib/pkgconfig</environment_variable>
                    <environment_variable action="set_to" name="TIFF_ROOT">$INSTALL_DIR</environment_variable>
                    <environment_variable action="prepend_to" name="LD_LIBRARY_PATH">$INSTALL_DIR/lib</environment_variable>
                </action>
            </actions>
        </install>
        <readme>
        </readme>
    </package>
</tool_dependency>

Add LD_LIBRARY_PATH as export ENV
Add LD_LIBRARY_PATH as export ENV