./configure --prefix=/usr/local/php-4.3.8 --with-apxs2=/usr/local/apache2/bin/apxs --with-mysql --with-xml –with-curl=/usr/include

checking for CURL support... yes
checking for cURL 7.9.8 or greater... libcurl 7.12.1
checking for curl_easy_perform in -lcurl... no
configure: error: There is something wrong. Please check config.log for more information.

configure:21290: checking for CURL support
configure:21357: checking for cURL 7.9.8 or greater
configure:21657: checking for curl_easy_perform in -lcurl
configure:21676: gcc -o conftest -g -O2  -Wl,-rpath,/usr/kerberos/lib -L/usr/kerberos/lib -Wl,-rpath,/usr/kerberos/lib -L/usr/kerberos/lib  -Wl,-rpath,/usr/kerberos/lib -L/usr/kerberos/lib -lcurl -lssl -lcrypto -lgssapi_krb5 -lkrb5 -lcom_err -lk5crypto -lresolv -ldl -lz -lgssapi_krb5 -lkrb5 -lk5crypto -lcom_err -lresolv -lidn -lssl -lcrypto -lssl -lcrypto -lgssapi_krb5 -lkrb5 -lcom_err -lk5crypto -lresolv -ldl -lz -lz conftest.c -lcurl  -lcurl -lresolv -lm -ldl -lnsl  -lcurl -lssl -lcrypto -lgssapi_krb5 -lkrb5 -lcom_err -lk5crypto -lresolv -ldl -lz -lgssapi_krb5 -lkrb5 -lk5crypto -lcom_err -lresolv -lidn -lssl -lcrypto -lssl -lcrypto -lgssapi_krb5 -lkrb5 -lcom_err -lk5crypto -lresolv -ldl -lz -lz 1>&5
/usr/bin/ld: cannot find -lidn
collect2: ld returned 1 exit status
configure: failed program was:
#line 21665 "configure"
#include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error.  */
/* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
char curl_easy_perform();
 
int main() {
curl_easy_perform()
; return 0; }