Installation problems

Hi all,
        I have downloaded the w3c-libwww-5.4.0.tar.gz for linux Redhat 7.2, after extracting the package in a folder and do the ./configure, make and make install commands when I try to compile a program in the libwww directory by using "gcc -o test `libwww-config --cflags` Library/Examples/libapp_1.c `libwww-config --libs` command I get as error that the header files such as WWWInit.h are not present. If someone can help me please don't hesitate, your suggestions are much welcome.

                                                 Thanks in advance,
                                                   Arnaud.