[Lib] link static libcurl

Bonjour,
apres pas mal de recherche et de temps passé je solicite de l'aide.
J'ai fait un petit executable qui utilise libcurl. Je travail sous linux ( ubuntu ).
la commande : ldd libcurl.so

Code:

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	linux-gate.so.1 =>  (0xb7f2e000)
	libidn.so.11 => /usr/lib/libidn.so.11 (0xb7eb0000)
	libldap_r-2.4.so.2 => /usr/lib/libldap_r-2.4.so.2 (0xb7e70000)
	libgssapi_krb5.so.2 => /usr/lib/libgssapi_krb5.so.2 (0xb7e46000)
	libkrb5.so.3 => /usr/lib/libkrb5.so.3 (0xb7db9000)
	libk5crypto.so.3 => /usr/lib/libk5crypto.so.3 (0xb7d96000)
	libcom_err.so.2 => /lib/libcom_err.so.2 (0xb7d93000)
	libz.so.1 => /usr/lib/libz.so.1 (0xb7d7e000)
	libgnutls.so.13 => /usr/lib/libgnutls.so.13 (0xb7d08000)
	libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7bb8000)
	liblber-2.4.so.2 => /usr/lib/liblber-2.4.so.2 (0xb7bab000)
	libresolv.so.2 => /lib/tls/i686/cmov/libresolv.so.2 (0xb7b98000)
	libsasl2.so.2 => /usr/lib/libsasl2.so.2 (0xb7b81000)
	libpthread.so.0 => /lib/tls/i686/cmov/libpthread.so.0 (0xb7b69000)
	libkrb5support.so.0 => /usr/lib/libkrb5support.so.0 (0xb7b60000)
	libdl.so.2 => /lib/tls/i686/cmov/libdl.so.2 (0xb7b5c000)
	libkeyutils.so.1 => /lib/libkeyutils.so.1 (0xb7b59000)
	/lib/ld-linux.so.2 (0xb7f2f000)
	libtasn1.so.3 => /usr/lib/libtasn1.so.3 (0xb7b49000)
	libgcrypt.so.11 => /lib/libgcrypt.so.11 (0xb7afc000)
	libgpg-error.so.0 => /lib/libgpg-error.so.0 (0xb7af7000)

j'ai localisé les .a correspondant a ces libs. J'inclus celles que j'ai trouvé dans mon makefile.

Code:

-L/usr/lib -L/usr/lib  /usr/lib/libldap_r.a /lib/libgcrypt.a /usr/lib/libcom_err.a /usr/lib/libresolv.a /usr/lib/libidn.a /usr/lib/libssl.a /usr/lib/libcrypto.a /usr/lib/libcurl.a  /usr/lib/libQtCore.a -lpthread -lQtCore

resultat

Code:

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g++ -Wl,--no-undefined -o ../bin/kdungeon main.o conf_component.o configuration.o dg_file.o dg_params.o dungeongate.o path.o    -L/usr/lib -L/usr/lib  /usr/lib/libldap_r.a /lib/libgcrypt.a /usr/lib/libcom_err.a /usr/lib/libresolv.a /usr/lib/libidn.a /usr/lib/libssl.a /usr/lib/libcrypto.a /usr/lib/libcurl.a  /usr/lib/libQtCore.a -lpthread -lQtCore 
/usr/lib/libcurl.a(url.o): In function `fix_hostname':
(.text+0x7ea): undefined reference to `stringprep_check_version'
/usr/lib/libcurl.a(url.o): In function `fix_hostname':

Question ?
- est ce que je procede de la bonne facon ?
- ... ?