The cURL package contains an utility and a library used for transferring files with URL syntax to any of the following protocols: DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTSP, SMB, SMBS, SMTP, SMPTS, TELNET, and TFTP. Its ability to both download and upload files can be incorporated into other programs to support functions like streaming media.
![[Note]](../images/note.png)
Development versions of BLFS may not build or run some packages properly if dependencies have been updated since the most recent stable versions of the book.
Download (HTTP): https://curl.se/download/curl-8.0.1.tar.xz
Download MD5 sum: f6c2fdeb30ad30234378a56c28350845
Download size: 2.5 MB
Estimated disk space required: 45 MB (add 19 MB for tests)
Estimated build time: 0.3 SBU (with parallelism=4; add 16 SBU for tests (without valgrind, add 35 SBU with valgrind)
make-ca-1.12 (runtime)
Brotli-1.0.9, c-ares-1.19.0, GnuTLS-3.8.0, libidn2-2.3.4, libpsl-0.21.2, libssh2-1.10.0, MIT Kerberos V5-1.20.1, nghttp2-1.53.0, OpenLDAP-2.6.4, Samba-4.18.2 (runtime, for NTLM authentication), gsasl, impacket, libmetalink, librtmp, ngtcp2, quiche, and SPNEGO
Apache-2.4.57 and stunnel-5.69 (for the HTTPS and FTPS tests), and Valgrind-3.21.0 (this will slow the tests down and may cause failures.)
User Notes: https://wiki.linuxfromscratch.org/blfs/wiki/curl
Install cURL by running the following commands:
./configure --prefix=/usr \
--disable-static \
--with-openssl \
--enable-threaded-resolver \
--with-ca-path=/etc/ssl/certs &&
make
To run the test suite, issue: make test. The tests related to the SMB protocol will output a message duplicated many times complaining the Python module impacket (not a part of BLFS) is missing and be skipped.
Now, as the root user:
make install &&
rm -rf docs/examples/.deps &&
find docs \( -name Makefile\* -o -name \*.1 -o -name \*.3 \) -exec rm {} \; &&
install -v -d -m755 /usr/share/doc/curl-8.0.1 &&
cp -v -R docs/* /usr/share/doc/curl-8.0.1
To run some simple verification tests on the newly installed
curl, issue the
following commands: curl
--trace-ascii debugdump.txt
https://www.example.com/ and curl --trace-ascii d.txt --trace-time
https://example.com/. Inspect the locally created
trace files debugdump.txt and
d.txt, which contains version
information, downloaded files information, etc. One file has the
time for each action logged.
--disable-static: This
switch prevents installation of static versions of the libraries.
--enable-threaded-resolver:
This switch enables cURL's builtin
threaded DNS resolver.
--with-ca-path=/etc/ssl/certs: This
switch sets the location of the BLFS Certificate Authority store.
--with-openssl: This
parameter chooses OpenSSL as
SSL/TLS implementation. This seems mandatory now.
--with-gssapi: This parameter adds
Kerberos 5 support to libcurl.
--without-ssl --with-gnutls: Use to
build with GnuTLS support instead
of OpenSSL for SSL/TLS.
--with-ca-bundle=/etc/pki/tls/certs/ca-bundle.crt:
Use this switch instead of --with-ca-path if building with
GnuTLS support instead of
OpenSSL for SSL/TLS.
--with-libssh2: This parameter adds
SSH support to cURL. This is
disabled by default.
--enable-ares: This parameter adds
support for DNS resolution through the c-ares library. It overrides
--enable-threaded-resolver
and is not widely tested by the editors.
find docs ... -exec rm {}
\;: This command removes Makefiles and man files from the documentation
directory that would otherwise be installed by the commands that
follow.